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Initial Number of Shares

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2019 Note Hedges

2023 Note Hedges

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Document and Entity Information Document - shares	9 Months Ended
Document and Entity Information Document - shares	Apr. 30, 2019	May 16, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	Palo Alto Networks Inc
Entity Central Index Key	0001327567
Document Type	10-Q
Document Period End Date	Apr. 30, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Document Fiscal Year End Date	--07-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		95,974,993
Emerging Growth Company	false
Small Business	false

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Apr. 30, 2019	Jul. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,314.9	$ 2,506.9
Short-term investments	1,733.2	896.5
Accounts receivable, net of allowance for doubtful accounts of $0.8 and $1.2 at April 30, 2019 and July 31, 2018, respectively	407.5	467.0
Prepaid expenses and other current assets	261.9	268.1
Total current assets	3,717.5	4,138.5
Property and equipment, net	275.0	273.1
Long-term investments	669.9	547.5
Goodwill	1,027.3	522.8
Intangible assets, net	234.2	140.8
Other assets	337.9	326.2
Total assets	6,261.8	5,948.9
Current liabilities:
Accounts payable	68.6	49.4
Accrued compensation	144.0	163.7
Accrued and other liabilities	178.5	124.6
Deferred revenue	1,449.6	1,213.6
Convertible senior notes, net	158.1	550.4
Total current liabilities	1,998.8	2,101.7
Convertible senior notes, net	1,414.7	1,369.7
Long-term deferred revenue	1,182.6	1,065.7
Other long-term liabilities	211.1	229.6
Commitments and contingencies (Note 10)
Temporary equity	1.1	21.9
Stockholders’ equity:
Preferred stock; $0.0001 par value; 100.0 shares authorized; none issued and outstanding at April 30, 2019 and July 31, 2018	0.0	0.0
Common stock and additional paid-in capital; $0.0001 par value; 1,000.0 shares authorized; 95.9 and 93.6 shares issued and outstanding at April 30, 2019 and July 31, 2018, respectively	2,340.8	1,967.4
Accumulated other comprehensive loss	(7.2)	(16.4)
Accumulated deficit	(880.1)	(790.7)
Total stockholders’ equity	1,453.5	1,160.3
Total liabilities, temporary equity, and stockholders’ equity	$ 6,261.8	$ 5,948.9

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Millions, $ in Millions	Apr. 30, 2019	Jul. 31, 2018
Current assets:
Allowance for doubtful accounts	$ 0.8	$ 1.2
Stockholders’ equity:
Preferred stock, par value (in usd per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	100.0	100.0
Preferred stock, shares issued (in shares)	0.0	0.0
Preferred stock, shares outstanding (in shares)	0.0	0.0
Common stock, par value (in usd per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	1,000.0	1,000.0
Common stock, shares issued (in shares)	95.9	93.6
Common stock, shares outstanding (in shares)	95.9	93.6

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Revenue:
Revenue	$ 726.6	$ 567.7	$ 2,093.8	$ 1,615.1
Cost of revenue:
Cost of revenue	204.9	159.9	591.0	460.6
Total gross profit	521.7	407.8	1,502.8	1,154.5
Operating expenses:
Research and development	139.1	99.6	380.8	290.4
Sales and marketing	339.0	271.4	973.6	784.3
General and administrative	62.3	82.1	192.6	201.1
Total operating expenses	540.4	453.1	1,547.0	1,275.8
Operating loss	(18.7)	(45.3)	(44.2)	(121.3)
Interest expense	(20.6)	(6.5)	(63.9)	(19.2)
Other income, net	18.2	8.6	47.2	18.3
Loss before income taxes	(21.1)	(43.2)	(60.9)	(122.2)
Provision for (benefit from) income taxes	(0.9)	(2.8)	0.2	7.0
Net loss	$ (20.2)	$ (40.4)	$ (61.1)	$ (129.2)
Net loss per share, basic and diluted	$ (0.21)	$ (0.44)	$ (0.65)	$ (1.42)
Weighted-average shares used to compute net loss per share, basic and diluted	94.4	91.9	94.1	91.3
Product
Revenue:
Revenue	$ 278.4	$ 218.1	$ 790.5	$ 607.7
Cost of revenue:
Cost of revenue	78.0	68.9	233.7	190.4
Subscription and support
Revenue:
Revenue	448.2	349.6	1,303.3	1,007.4
Cost of revenue:
Cost of revenue	$ 126.9	$ 91.0	$ 357.3	$ 270.2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (20.2)	$ (40.4)	$ (61.1)	$ (129.2)
Other comprehensive income (loss), net of tax:
Change in unrealized gains (losses) on investments	2.4	(1.9)	8.1	(9.1)
Change in unrealized gains (losses) on cash flow hedges	0.2	(4.1)	1.1	(0.7)
Other comprehensive income (loss)	2.6	(6.0)	9.2	(9.8)
Comprehensive loss	$ (17.6)	$ (46.4)	$ (51.9)	$ (139.0)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Statement - USD ($) shares in Millions, $ in Millions	Total	Common stock	Common Stock and Additional Paid in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Common stock, beginning balance (in shares) at Jul. 31, 2017		91.5
Beginning balance at Jul. 31, 2017	$ 927.8		$ 1,599.7	$ (3.4)	$ (668.5)
Increase (Decrease) in Stockholders' Equity
Net loss	(129.2)				(129.2)
Other comprehensive income (loss)	(9.8)			(9.8)
Issuance of common stock in connection with employee equity incentive plans (in shares)		3.1
Issuance of common stock in connection with employee equity incentive plans	53.0		53.0
Taxes paid related to net share settlement of equity awards	(34.3)		(34.3)
Share-based compensation for equity-based awards	376.9		376.9
Repurchase and retirement of common stock (in shares)		(1.7)
Repurchase and retirement of common stock	(250.0)		(250.0)
Temporary equity reclassification	(27.7)		(27.7)
Common stock, ending balance (in shares) at Apr. 30, 2018		92.9
Ending balance at Apr. 30, 2018	906.7		1,717.6	(13.2)	(797.7)
Common stock, beginning balance (in shares) at Jan. 31, 2018		91.8
Beginning balance at Jan. 31, 2018	811.4		1,575.9	(7.2)	(757.3)
Increase (Decrease) in Stockholders' Equity
Net loss	(40.4)				(40.4)
Other comprehensive income (loss)	(6.0)			(6.0)
Issuance of common stock in connection with employee equity incentive plans (in shares)		1.1
Issuance of common stock in connection with employee equity incentive plans	29.4		29.4
Taxes paid related to net share settlement of equity awards	(11.4)		(11.4)
Share-based compensation for equity-based awards	117.9		117.9
Temporary equity reclassification	5.8		5.8
Common stock, ending balance (in shares) at Apr. 30, 2018		92.9
Ending balance at Apr. 30, 2018	$ 906.7		1,717.6	(13.2)	(797.7)
Common stock, beginning balance (in shares) at Jul. 31, 2018	93.6	93.6
Beginning balance at Jul. 31, 2018	$ 1,160.3		1,967.4	(16.4)	(790.7)
Increase (Decrease) in Stockholders' Equity
Net loss	(61.1)				(61.1)
Other comprehensive income (loss)	9.2			9.2
Issuance of common stock in connection with employee equity incentive plans (in shares)		3.0
Issuance of common stock in connection with employee equity incentive plans	70.5		70.5
Taxes paid related to net share settlement of equity awards	(24.6)		(24.6)
Share-based compensation for equity-based awards	423.0		423.0
Repurchase and retirement of common stock (in shares)		(1.9)
Repurchase and retirement of common stock	(330.0)		(330.0)
Settlement of convertible notes (in shares)		1.7
Settlement of convertible notes	(12.2)		(12.2)
Common stock received from exercise of note hedges (in shares)		(1.7)
Issuance of common and restricted common stock in connection with acquisition (in shares)		1.2
Issuance of common and restricted common stock in connection with acquisition	225.9		225.9
Temporary equity reclassification	$ 20.8		20.8
Common stock, ending balance (in shares) at Apr. 30, 2019	95.9	95.9
Ending balance at Apr. 30, 2019	$ 1,453.5		2,340.8	(7.2)	(880.1)
Common stock, beginning balance (in shares) at Jan. 31, 2019		93.7
Beginning balance at Jan. 31, 2019	1,071.8		1,941.5	(9.8)	(859.9)
Increase (Decrease) in Stockholders' Equity
Net loss	(20.2)				(20.2)
Other comprehensive income (loss)	2.6			2.6
Issuance of common stock in connection with employee equity incentive plans (in shares)		1.0
Issuance of common stock in connection with employee equity incentive plans	36.6		36.6
Taxes paid related to net share settlement of equity awards	(3.6)		(3.6)
Share-based compensation for equity-based awards	140.4		140.4
Issuance of common and restricted common stock in connection with acquisition (in shares)		1.2
Issuance of common and restricted common stock in connection with acquisition	224.2		224.2
Temporary equity reclassification	$ 1.7		1.7
Common stock, ending balance (in shares) at Apr. 30, 2019	95.9	95.9
Ending balance at Apr. 30, 2019	$ 1,453.5		$ 2,340.8	$ (7.2)	$ (880.1)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Cash flows from operating activities
Net loss	$ (61.1)	$ (129.2)
Adjustments to reconcile net loss to net cash provided by operating activities:
Share-based compensation for equity-based awards	417.5	373.1
Depreciation and amortization	111.6	68.0
Cease-use loss related to facility exit	4.1	41.1
Amortization of deferred contract costs	147.6	101.9
Amortization of debt discount and debt issuance costs	53.6	19.2
Amortization of investment premiums, net of accretion of purchase discounts	(13.0)	0.6
Loss on conversions of convertible senior notes	2.6	0.0
Repayments of convertible senior notes attributable to debt discount	(67.1)	0.0
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable, net	63.8	71.8
Prepaid expenses and other assets	(164.4)	(177.1)
Accounts payable	23.2	(4.6)
Accrued compensation	(22.7)	(24.4)
Accrued and other liabilities	(10.7)	41.9
Deferred revenue	339.1	378.2
Net cash provided by operating activities	824.1	760.5
Cash flows from investing activities
Purchases of investments	(2,426.6)	(387.9)
Proceeds from sales of investments	3.5	0.0
Proceeds from maturities of investments	1,506.8	531.0
Business acquisitions, net of cash acquired	(382.8)	(370.1)
Purchases of property, equipment, and other assets	(78.1)	(86.6)
Net cash used in investing activities	(1,377.2)	(313.6)
Cash flows from financing activities
Repayments of convertible senior notes attributable to principal and equity component	(348.5)	0.0
Payments for debt issuance costs	(3.7)	0.0
Repurchases of common stock	(330.0)	(259.1)
Proceeds from sales of shares through employee equity incentive plans	70.3	52.6
Payments for taxes related to net share settlement of equity awards	(24.6)	(34.3)
Payment of deferred consideration related to prior year business acquisition	(1.3)	0.0
Net cash used in financing activities	(637.8)	(240.8)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(1,190.9)	206.1
Cash, cash equivalents, and restricted cash—beginning of period	2,509.2	745.5
Cash, cash equivalents, and restricted cash—end of period	1,318.3	951.6
Non-cash investing and financing activities
Equity consideration for business acquisitions	(225.9)	0.0
Property and equipment acquired through lease incentives	$ 0.0	$ 37.8

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets - USD ($) $ in Millions	Apr. 30, 2019	Apr. 30, 2018
Reconciliation of cash, cash equivalents, and restricted cash
Cash and cash equivalents	$ 1,314.9	$ 949.0
Total cash, cash equivalents, and restricted cash	1,318.3	951.6
Prepaid expenses and other current assets
Reconciliation of cash, cash equivalents, and restricted cash
Restricted cash	2.2	1.3
Other assets
Reconciliation of cash, cash equivalents, and restricted cash
Restricted cash	$ 1.2	$ 1.3

Description of Business, Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies (Notes)

9 Months Ended

Apr. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business, Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies

Description of Business and Summary of Significant Accounting Policies

Description of Business

Palo Alto Networks, Inc. (the “Company,” “we,” “us,” or “our”), located in Santa Clara, California, was incorporated in March 2005 under the laws of the State of Delaware and commenced operations in April 2005. We offer a security operating platform that empowers enterprises, service providers, and government entities to secure their organizations by safely enabling applications and data running in their networks, on their endpoints, and in the cloud, and by preventing breaches that stem from targeted cyberattacks.

Basis of Presentation and Principles of Consolidation

The accompanying condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”), consistent in all material respects with those applied in our Annual Report on Form 10-K for the fiscal year ended July 31, 2018, filed with the Securities and Exchange Commission (“SEC”) on September 13, 2018. Our condensed consolidated financial statements include our accounts and our wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.

Our condensed consolidated financial statements are unaudited, but include all adjustments of a normal recurring nature necessary for a fair presentation of our quarterly results. We have made estimates and judgments affecting the amounts reported in our condensed consolidated financial statements and the accompanying notes. The actual results that we experience may differ materially from our estimates.

Certain prior period amounts have been reclassified to conform to our current period presentation. In addition, certain prior period amounts have been adjusted due to our retrospective adoption of new accounting guidance related to revenue from contracts with customers and new accounting guidance related to the presentation of restricted cash and cash equivalents in the statement of cash flows. Refer to “Recently Adopted Accounting Pronouncements” below for more information.

Our condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes in our Annual Report on Form 10-K for the fiscal year ended July 31, 2018.

Summary of Significant Accounting Policies

There have been no material changes to our significant accounting policies as of and for the nine months ended April 30, 2019, as compared to the significant accounting policies described in our Annual Report on Form 10-K for the fiscal year ended July 31, 2018, except for the change in our accounting policies for revenue recognition and deferred contract costs due to our adoption of new accounting guidance related to revenue from contracts with customers. Refer to “Recently Adopted Accounting Pronouncements” below, Note 2. Revenue, and Note 8. Deferred Contract Costs for more information.

Recently Adopted Accounting Pronouncements

Implementation Costs Incurred in a Cloud Computing Arrangement

In August 2018, the Financial Accounting Standards Board (“FASB”) issued authoritative guidance on customers’ accounting for implementation costs incurred in a cloud computing arrangement that is a service contract, which requires customers to apply internal-use software guidance to determine the implementation costs that are able to be capitalized. Under the new standard, capitalized implementation costs are generally amortized over the term of the arrangement, beginning when the module or component of the hosting arrangement is ready for its intended use. We early adopted this standard in our second quarter of fiscal 2019 on a prospective basis. The adoption of the standard did not have a material impact on our condensed consolidated financial statements.

Business Combinations - Definition of a Business

In January 2017, the FASB issued authoritative guidance clarifying the definition of a business to assist companies with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. We adopted this standard in our first quarter of fiscal 2019 on a prospective basis. The adoption of the standard did not have an impact on our condensed consolidated financial statements.

Statement of Cash Flows - Restricted Cash

In November 2016, the FASB issued authoritative guidance on the presentation of restricted cash or restricted cash equivalents in the statement of cash flows. Under the new standard, restricted cash or restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. We adopted this standard in our first quarter of fiscal 2019 on a retrospective basis. The adoption of the standard did not have a material impact on our condensed consolidated financial statements because our restricted cash balance has not been material.

Income Taxes - Intra-Entity Asset Transfers

In October 2016, the FASB issued authoritative guidance requiring the recognition of income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. We adopted the standard in our first quarter of fiscal 2019 on a modified retrospective basis. As a result, we recorded the cumulative effect of the change as an increase to accumulated deficit of $28.3 million, with a corresponding decrease to prepaid expenses and other current assets and other assets in our condensed consolidated balance sheets as of August 1, 2018, the date of adoption. The cumulative effect adjustment represents the reclassification of unrecognized income tax effects from intra-entity transfers of assets other than inventory that occurred prior to the date of adoption.

Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments

In August 2016, the FASB issued new authoritative guidance addressing eight specific cash flow issues with the objective of reducing the existing diversity in practice in how certain transactions are presented and classified in the statement of cash flows. We adopted this standard in our first quarter of fiscal 2019 on a retrospective basis. The adoption of the standard did not have an impact on our condensed consolidated financial statements.

Financial Instruments - Recognition and Measurement

In January 2016, the FASB issued authoritative guidance requiring equity instruments to be measured at fair value with changes in fair value recognized through net income. We adopted this standard in our first quarter of fiscal 2019 on a prospective basis for non-marketable equity securities and a modified retrospective basis for marketable equity investments. The adoption of the standard did not have an impact on our condensed consolidated financial statements.

Revenue Recognition

In May 2014, the FASB issued new authoritative guidance on revenue from contracts with customers. The new standard provides principles for recognizing revenue when control of promised goods or services is transferred to customers with the expected consideration in exchange for those goods or services, as well as guidance on the recognition of costs related to obtaining and fulfilling customer contracts. The standard also requires expanded disclosures about the nature, amount, timing, and uncertainty of revenues and cash flows arising from customer contracts, including significant judgments and changes in judgments, and assets recognized from costs incurred to obtain or fulfill a contract. We adopted the standard in our first quarter of fiscal 2019 using the full retrospective method.

The adoption of the new standard did not have a material impact on our condensed consolidated financial statements for the fiscal years ended July 31, 2018 and 2017, with the exception of the accounting for incremental costs to obtain customer contracts, which primarily consist of sales commissions, due to the longer period of amortization. Under the previous accounting guidance, we deferred and amortized these costs over the term of the related contract. Under the new standard, we defer and amortize these costs for initial contracts that are not commensurate with renewal commissions over a benefit period of five years, which is typically longer than the initial contract term.

The adoption of the standard using the full retrospective method required us to restate the prior periods presented in this Quarterly Report on Form 10-Q, with the cumulative effect of the change of $168.2 million reflected in accumulated deficit as of July 31, 2017. In adopting the new standard, we have also applied a transition practical expedient and have not disclosed revenue expected to be recognized from remaining performance obligations for periods prior to August 1, 2018.

The following tables present the impact of the adoption of the standard on our previously reported results (in millions, except per share data):



	Three Months Ended April 30, 2018									Nine Months Ended April 30, 2018
	As Previously Reported			Impact of Adoption			As Adjusted			As Previously Reported			Impact of Adoption			As Adjusted
Condensed Consolidated Statements of Operations
Product revenue	$	215.2		$	2.9		$	218.1		$	603.9		$	3.8		$	607.7
Subscription and support revenue	351.9			(2.3		)	349.6			1,011.1			(3.7		)	1,007.4
Total revenue	567.1			0.6			567.7			1,615.0			0.1			1,615.1
Total cost of revenue	159.9			—			159.9			460.6			—			460.6
Total operating expenses	458.8			(5.7		)	453.1			1,292.1			(16.3		)	1,275.8
Operating loss	(51.6		)	6.3			(45.3		)	(137.7		)	16.4			(121.3		)
Net loss	(46.7		)	6.3			(40.4		)	(145.6		)	16.4			(129.2		)
Net loss per share, basic and diluted	$	(0.51	)	$	0.07		$	(0.44	)	$	(1.59	)	$	0.17		$	(1.42	)



	July 31, 2018
	As Previously Reported			Impact of Adoption			As Adjusted
Condensed Consolidated Balance Sheet
Accounts receivable, net	$	467.3		$	(0.3	)	$	467.0
Prepaid expenses and other current assets	261.3			6.8			268.1
Other assets	206.8			119.4			326.2
Accrued and other liabilities	107.0			17.6			124.6
Deferred revenue	1,268.9			(55.3		)	1,213.6
Long-term deferred revenue	1,096.0			(30.3		)	1,065.7
Accumulated deficit	$	(984.6	)	$	193.9		$	(790.7	)

The adoption of the standard did not impact net cash flows from operating, investing, or financing activities in our condensed consolidated statements of cash flows.

Recently Issued Accounting Pronouncements

Financial Instruments - Credit Losses

In June 2016, the FASB issued new authoritative guidance on the accounting for credit losses on most financial assets and certain financial instruments. The standard replaces the existing incurred loss model with an expected credit loss model for financial assets measured at amortized cost, including trade receivables, and requires that credit losses on available-for-sale debt securities be presented as an allowance rather than as a write-down. The standard is effective for us in our first quarter of fiscal 2021 and will be applied on a modified retrospective basis. Early adoption is permitted beginning our first quarter of fiscal 2020. We are currently evaluating adoption timing and whether this standard will have a material impact on our condensed consolidated financial statements.

Leases

In February 2016, the FASB issued new authoritative guidance on lease accounting. Among its provisions, the standard requires lessees to recognize right-of-use assets and lease liabilities on the balance sheet for operating leases and also requires additional qualitative and quantitative disclosures about lease arrangements. The standard is effective for us in our first quarter of fiscal 2020 and will be applied on a modified retrospective basis, with the option to elect certain practical expedients. Early adoption is permitted; however, we plan to adopt the new standard in our first quarter of fiscal 2020. We expect to recognize right-of-use assets and operating lease liabilities on our consolidated balance sheets upon adoption for our operating leases disclosed in Note 10. Commitments and Contingencies, which will materially increase our total assets and liabilities. We do not expect the adoption of this standard to have a material impact to our consolidated statements of operations and consolidated statements of cash flows. We continue to evaluate the accounting, transition, and disclosure requirements of this standard, including its impact on our systems, accounting policies, and processes.

Revenue (Notes)

9 Months Ended

Apr. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenue

Revenue Recognition

Our revenue consists of product revenue and subscription and support revenue. Revenue is recognized when control of promised products, subscriptions and support services are transferred to customers with the expected consideration in exchange for those products and services. Depending on who the contract is with, our customers are either our channel partners or our end-customers.

We determine revenue recognition through the following steps:


•	Identification of the contract, or contracts, with a customer.


•	Identification of the performance obligations in the contract.


•	Determination of the transaction price.


•	Allocation of the transaction price to the performance obligations in the contract.


•	Recognition of revenue when, or as, we satisfy a performance obligation.

Revenues are reported net of sales taxes. Shipping charges billed to channel partners are included in revenues and related costs are included in cost of revenue.

Product Revenue

Product revenue is derived primarily from sales of our appliances. Product revenue also includes revenue derived from software licenses of Panorama and the VM-Series. We recognize product revenue at the time of hardware shipment or delivery of software license.

Subscription and Support Revenue

Subscription and support revenue is derived primarily from sales of our subscription and support offerings. We recognize subscription and support revenue over time as the services are performed. Our contractual subscription and support contracts are typically one to five years.

Contracts with Multiple Performance Obligations

The majority of our contracts with our customers include various combinations of our products and subscriptions and support which are distinct and accounted for as separate performance obligations. We account for multiple agreements with a single customer as a single contract if the contractual terms and/or substance of those agreements indicate that they may be so closely related that they are, in effect, parts of a single contract. The amount of consideration we expect to receive in exchange for delivering on the contract is allocated to each performance obligation based on its relative standalone selling price. If a contract contains a single performance obligation, no allocation is required.

We establish standalone selling price using the prices charged for a deliverable when sold separately. If the standalone selling price is not observable through past transactions, we estimate the standalone selling price based on our pricing model and our go-to-market strategy, which include factors such as type of sales channel (reseller, distributor, or end-customer), the geographies in which our offerings were sold (domestic or international), and offering type (products, subscriptions, or support).

Deferred Revenue

We record deferred revenue when cash payments are received or due in advance of our performance. Our payment terms typically require payment within 30 to 45 days of the date we issue an invoice. The current portion of deferred revenue represents the amounts that are expected to be recognized as revenue within one year of the condensed consolidated balance sheet date. During the nine months ended April 30, 2019, we recognized approximately $955.0 million of revenue pertaining to amounts that were deferred as of July 31, 2018.

Remaining Performance Obligations

Revenue expected to be recognized from remaining performance obligations was $2.7 billion as of April 30, 2019, of which we expect to recognize approximately $1.5 billion over the next 12 months and the remainder thereafter.

Disaggregation of Revenue

The following table presents revenue by geographic theater (in millions):



	Three Months Ended April 30,				Nine Months Ended April 30,
	2019		2018		2019		2018
			(As Adjusted)				(As Adjusted)
Revenue:
Americas
United States	$	464.3	$	358.0	$	1,314.8	$	1,030.0
Other Americas	33.5		29.7		108.2		80.3
Total Americas	497.8		387.7		1,423.0		1,110.3
Europe, the Middle East, and Africa (“EMEA”)	138.7		110.1		414.7		312.0
Asia Pacific and Japan (“APAC”)	90.1		69.9		256.1		192.8
Total revenue	$	726.6	$	567.7	$	2,093.8	$	1,615.1

The following table presents revenue for groups of similar products and services (in millions):



	Three Months Ended April 30,				Nine Months Ended April 30,
	2019		2018		2019		2018
			(As Adjusted)				(As Adjusted)
Revenue:
Product	$	278.4	$	218.1	$	790.5	$	607.7
Subscription and support
Subscription	258.8		192.0		739.8		544.3
Support	189.4		157.6		563.5		463.1
Total subscription and support	448.2		349.6		1,303.3		1,007.4
Total revenue	$	726.6	$	567.7	$	2,093.8	$	1,615.1

Deferred Contract Costs

We defer contract costs that are recoverable and incremental to obtaining customer sales contracts. Contract costs, which primarily consist of sales commissions, are amortized on a systematic basis that is consistent with the transfer to the customer of the goods or services to which the asset relates. Sales commissions paid for initial contracts are generally not commensurate with the commissions paid for renewal contracts, given the substantive difference in commission rates in proportion to their respective contract values. Sales commissions for initial contracts that are not commensurate are amortized over a benefit period of five years, consistent with the revenue recognition pattern of the performance obligations in the related contracts including expected renewals. The benefit period is determined by taking into consideration contract length, technology life, and other quantitative and qualitative factors. The expected renewals are estimated based on historical renewal trends. Sales commissions for initial contracts that are commensurate and sales commissions for renewal contracts are amortized over the related contractual period in proportion to the revenue recognized.

We classify deferred contract costs as short-term or long-term based on when we expect to recognize the expense. Short-term deferred contract costs are included in prepaid expenses and other current assets and long-term deferred contract costs are included in other assets in our condensed consolidated balance sheets. Deferred contract costs are periodically reviewed for impairment. The amortization of deferred contract costs is included in sales and marketing expense in our condensed consolidated statements of operations.

The following table presents details of our short-term and long-term deferred contract costs as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019		July 31, 2018
Short-term deferred contract costs	$	125.8	$	113.2
Long-term deferred contract costs	251.8		224.8
Total deferred contract costs	$	377.6	$	338.0

We recognized amortization expense for our deferred contract costs of $57.2 million and $147.6 million during the three and nine months ended April 30, 2019, respectively, and $37.7 million and $101.9 million during the three and nine months ended April 30, 2018, respectively. We did not recognize any impairment losses on our deferred contract costs during the three and nine months ended April 30, 2019 or 2018.

Fair Value Measurements (Notes)

9 Months Ended

Apr. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

We categorize assets and liabilities recorded or disclosed at fair value on our condensed consolidated balance sheets based upon the level of judgment associated with inputs used to measure their fair value. The categories are as follows:


•	Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities.


•	Level 2—Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the assets or liabilities, either directly or indirectly through market corroboration, for substantially the full term of the financial instruments.


•	Level 3—Inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value. The inputs require significant management judgment or estimation.

The following table presents the fair value of our financial assets and liabilities measured at fair value on a recurring basis using the above input categories as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019								July 31, 2018
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	155.0	$	—	$	—	$	155.0	$	1,512.3	$	—	$	—	$	1,512.3
Commercial paper	—		27.0		—		27.0		—		52.0		—		52.0
Corporate debt securities	—		15.0		—		15.0		—		—		—		—
U.S. government and agency securities	—		340.0		—		340.0		—		397.3		—		397.3
Total cash equivalents	155.0		382.0		—		537.0		1,512.3		449.3		—		1,961.6
Short-term investments:
Certificates of deposit	—		—		—		—		—		5.4		—		5.4
Non-U.S. government securities	—		—		—		—		—		20.0		—		20.0
Commercial paper	—		19.5		—		19.5		—		22.3		—		22.3
Corporate debt securities	—		269.8		—		269.8		—		139.8		—		139.8
U.S. government and agency securities	—		1,443.9		—		1,443.9		—		709.0		—		709.0
Total short-term investments	—		1,733.2		—		1,733.2		—		896.5		—		896.5
Long-term investments:
Corporate debt securities	—		271.3		—		271.3		—		153.6		—		153.6
U.S. government and agency securities	—		398.6		—		398.6		—		393.9		—		393.9
Total long-term investments	—		669.9		—		669.9		—		547.5		—		547.5
Prepaid expenses and other current assets:
Foreign currency forward contracts	—		0.1		—		0.1		—		—		—		—
Total prepaid expenses and other current assets	—		0.1		—		0.1		—		—		—		—
Total assets measured at fair value	$	155.0	$	2,785.2	$	—	$	2,940.2	$	1,512.3	$	1,893.3	$	—	$	3,405.6

Accrued and other liabilities:
Foreign currency forward contracts	$	—	$	5.3	$	—	$	5.3	$	—	$	6.9	$	—	$	6.9
Total accrued and other liabilities	—		5.3		—		5.3		—		6.9		—		6.9
Total liabilities measured at fair value	$	—	$	5.3	$	—	$	5.3	$	—	$	6.9	$	—	$	6.9

Refer to Note 9. Debt for the carrying amount and estimated fair value of our convertible senior notes as of April 30, 2019 and July 31, 2018.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Cash Equivalents and Investments (Notes)

9 Months Ended

Apr. 30, 2019

Investments, Debt and Equity Securities [Abstract]

Cash Equivalents and Investments

Available-for-sale Securities

The following tables summarize the amortized cost, unrealized gains and losses, and fair value of our available-for-sale securities as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Cash equivalents:
Commercial paper	$	27.0	$	—	$	—		$	27.0
Corporate debt securities	15.0		—		—			15.0
U.S. government and agency securities	340.0		—		—			340.0
Total available-for-sale cash equivalents	$	382.0	$	—	$	—		$	382.0
Investments:
Commercial paper	$	19.5	$	—	$	—		$	19.5
Corporate debt securities	540.5		1.3		(0.7		)	541.1
U.S. government and agency securities	1,843.2		1.6		(2.3		)	1,842.5
Total available-for-sale investments	$	2,403.2	$	2.9	$	(3.0	)	$	2,403.1



	July 31, 2018
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Cash equivalents:
Commercial paper	$	52.0	$	—	$	—		$	52.0
U.S. government and agency securities	397.3		—		—			397.3
Total available-for-sale cash equivalents	$	449.3	$	—	$	—		$	449.3
Investments:
Certificates of deposit	$	5.4	$	—	$	—		$	5.4
Non-U.S. government securities	20.0		—		—			20.0
Commercial paper	22.3		—		—			22.3
Corporate debt securities	295.9		—		(2.5		)	293.4
U.S. government and agency securities	1,110.6		—		(7.7		)	1,102.9
Total available-for-sale investments	$	1,454.2	$	—	$	(10.2	)	$	1,444.0

Unrealized losses related to these securities are due to interest rate fluctuations as opposed to credit quality. In addition, we do not intend to sell and it is not likely that we would be required to sell these securities before recovery of their amortized cost basis, which may be at maturity. As a result, there were no other-than-temporary impairments for these securities at April 30, 2019 and July 31, 2018.

The following table summarizes the amortized cost and fair value of our available-for-sale securities as of April 30, 2019, by contractual years-to-maturity (in millions):



	Amortized Cost		Fair Value
Due within one year	$	2,116.0	$	2,115.2
Due between one and three years	669.2		669.9
Total	$	2,785.2	$	2,785.1

Marketable Equity Securities

Marketable equity securities consist of money market funds and are included in cash and cash equivalents in our condensed consolidated balance sheets. As of April 30, 2019 and July 31, 2018, the carrying value of our marketable equity securities were $155.0 million and $1.5 billion, respectively. There were no unrealized gains or losses recognized for these securities during the three and nine months ended April 30, 2019 and 2018.

Derivative Instruments (Notes)	9 Months Ended
Derivative Instruments (Notes)	Apr. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments As a global business, we are exposed to currency exchange rate risk. Substantially all of our revenue is transacted in U.S. dollars, however, a portion of our operating expenditures are incurred outside of the United States and are denominated in foreign currencies, making them subject to fluctuations in foreign currency exchange rates. We enter into foreign currency derivative contracts with maturities of 12 months or less which we designate as cash flow hedges to manage the foreign currency exchange rate risk associated with these expenditures. These derivative contracts expose us to credit risk to the extent that the counterparties may be unable to meet the terms of the arrangement. We mitigate this credit risk by transacting with major financial institutions with high credit ratings and also enter into master netting arrangements, which permit net settlement of transactions with the same counterparty. We are not required to pledge, and are not entitled to receive, cash collateral related to these derivative instruments. We do not enter into derivative contracts for trading or speculative purposes. Our derivative financial instruments are recorded at fair value, on a gross basis, as either assets or liabilities in our condensed consolidated balance sheets. Gains or losses related to our cash flow hedges are recorded as a component of accumulated other comprehensive income (loss) (“AOCI”) in our condensed consolidated balance sheets and are reclassified into the financial statement line item associated with the underlying hedged transaction in our condensed consolidated statements of operations when the underlying hedged transaction is recognized in earnings. If it becomes probable that the hedged transaction will not occur, the cumulative unrealized gain or loss is reclassified immediately from AOCI into the financial statement line item associated with the underlying hedged transaction in our condensed consolidated statements of operations. Gains or losses related to non-designated derivative instruments are recognized in other income (expense), net in our condensed consolidated statements of operations for each period until the instrument matures, is terminated, is re-designated as a qualified cash flow hedge, or is sold. Derivatives designated as cash flow hedges are classified in our condensed consolidated statements of cash flows in the same manner as the underlying hedged transaction, primarily within cash flows from operating activities. As of April 30, 2019 and July 31, 2018, the total notional amount of our outstanding foreign currency forward contracts was $142.8 million and $288.5 million, respectively. Refer to Note 3. Fair Value Measurements for the fair value of our derivative instruments as reported in our condensed consolidated balance sheets as of April 30, 2019. During the three and nine months ended April 30, 2019 and 2018, both unrealized gains and losses recognized in AOCI related to our cash flow hedges and amounts reclassified into earnings were not material. Unrealized losses in AOCI related to our cash flow hedges as of April 30, 2019 and 2018 were not material.

Acquisitions (Notes)

9 Months Ended

Apr. 30, 2019

Business Combinations [Abstract]

Acquisitions

Demisto, Inc.

On March 28, 2019, we completed our acquisition of 100% of the voting equity interest of Demisto, Inc. (“Demisto”), a privately-held security company specializing in security orchestration, automation and response (“SOAR”). The acquisition expands the functionality of our platform with the addition of Demisto’s SOAR product. The total purchase consideration for the acquisition of Demisto was $474.2 million, which consisted of the following (in millions):



	Amount
Cash	$	250.0
Common stock (0.9 million shares)	214.7
Fair value of replacement equity awards	9.5
Total purchase consideration	$	474.2

As part of the acquisition, we issued replacement equity awards, which included 0.3 million shares of our restricted common stock. The total fair value of the replacement equity awards was $105.2 million, of which the portion attributable to services performed prior to the acquisition date was allocated to the purchase consideration. The remaining fair value was allocated to future services and will be expensed over the remaining service periods as share-based compensation.

We have accounted for this transaction as a business combination and allocated the purchase consideration to assets acquired and liabilities assumed based on preliminary estimated fair values, as presented in the following table (in millions):



	Amount
Goodwill	$	387.8
Identified intangible assets	76.3
Cash	25.9
Net liabilities assumed	(15.8		)
Total	$	474.2

Goodwill generated from this business combination is primarily attributable to the assembled workforce and expected post-acquisition synergies from integrating Demisto’s product into our platform. The goodwill is not deductible for income tax purposes.

The following table presents details of the identified intangible assets acquired (in millions, except years):



	Fair Value		Estimated Useful Life
Developed technology	$	56.6	6 years
Customer relationships	19.7		6 years
Total	$	76.3

RedLock Inc.

On October 12, 2018, we completed our acquisition of 100% of the voting equity interest of RedLock, Inc. (“RedLock”), a privately-held cloud security company. The acquisition expands our security capabilities for the public cloud with the addition of RedLock’s cloud security analytics technology. The total purchase consideration for the acquisition of RedLock was $158.2 million, which consisted of $155.0 million in cash paid upon closing and $3.2 million in fair value of unvested equity awards attributable to services performed prior to the acquisition date.

As part of the acquisition, we assumed RedLock equity awards with a total fair value of $57.4 million. Of the total fair value, a portion was allocated to the purchase consideration and the remainder was allocated to future services and will be expensed over the remaining service periods as share-based compensation.



	Amount
Goodwill	$	113.6
Identified intangible assets	54.8
Net liabilities assumed	(10.2		)
Total	$	158.2

Goodwill generated from this business combination is primarily attributable to the assembled workforce and expected post-acquisition synergies from integrating RedLock’s technology into our platform. The goodwill is not deductible for income tax purposes.

The following table presents details of the identified intangible assets acquired (in millions, except years):



	Fair Value		Estimated Useful Life
Developed technology	$	48.6	4 years
Customer relationships	5.3		8 years
Trade name and trademarks	0.9		6 months
Total	$	54.8

Additional Acquisition-Related Information

The operating results of the acquired companies are included in our condensed consolidated statements of operations from the dates of acquisition. Pro forma results of operations have not been presented because the effects of the acquisitions were not material to our condensed consolidated statements of operations.

Additional information related to the acquired companies, such as that related to income tax and other contingencies, existing as of the acquisition date but unknown to us may become known during the remainder of the measurement period, not to exceed 12 months from the respective acquisition date, which may result in changes to the amounts and allocations recorded.

Goodwill and Intangible Assets (Notes)

9 Months Ended

Apr. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill

The following table presents details of our goodwill during the nine months ended April 30, 2019 (in millions):



	Amount
Balance as of July 31, 2018	$	522.8
Goodwill acquired	504.5
Balance as of April 30, 2019	$	1,027.3

Purchased Intangible Assets

The following table presents details of our purchased intangible assets as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019							July 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Intangible assets subject to amortization:
Developed technology	$	259.9	$	(65.2	)	$	194.7	$	154.7	$	(38.2	)	$	116.5
Customer relationships	37.2		(3.2		)	34.0		12.2		(1.2		)	11.0
Acquired intellectual property	8.9		(5.0		)	3.9		8.9		(4.5		)	4.4
Trade name and trademarks	9.4		(9.4		)	—		8.5		(0.4		)	8.1
Other	2.2		(2.2		)	—		2.2		(2.2		)	—
Total intangible assets subject to amortization	317.6		(85.0		)	232.6		186.5		(46.5		)	140.0
Intangible assets not subject to amortization:
In-process research and development	1.6		—			1.6		0.8		—			0.8
Total purchased intangible assets	$	319.2	$	(85.0	)	$	234.2	$	187.3	$	(46.5	)	$	140.8

We recognized amortization expense of $14.7 million and $38.5 million for the three and nine months ended April 30, 2019, respectively, and $3.8 million and $9.2 million for the three and nine months ended April 30, 2018, respectively.

The following table summarizes estimated future amortization expense of our intangible assets as of April 30, 2019 (in millions):



	Amount
Fiscal years ending July 31:
Remaining 2019	$	14.3
2020	56.9
2021	54.9
2022	50.4
2023	24.5
2024 and thereafter	31.6
Total future amortization expense	$	232.6

Deferred Contract Costs (Notes)

9 Months Ended

Apr. 30, 2019

Revenue from Contract with Customer [Abstract]

Deferred Contract Costs

Revenue

Revenue Recognition

We determine revenue recognition through the following steps:


•	Identification of the contract, or contracts, with a customer.


•	Identification of the performance obligations in the contract.


•	Determination of the transaction price.


•	Allocation of the transaction price to the performance obligations in the contract.


•	Recognition of revenue when, or as, we satisfy a performance obligation.

Revenues are reported net of sales taxes. Shipping charges billed to channel partners are included in revenues and related costs are included in cost of revenue.

Product Revenue

Subscription and Support Revenue

Contracts with Multiple Performance Obligations

Deferred Revenue

Remaining Performance Obligations

Disaggregation of Revenue

The following table presents revenue by geographic theater (in millions):



	Three Months Ended April 30,				Nine Months Ended April 30,
	2019		2018		2019		2018
			(As Adjusted)				(As Adjusted)
Revenue:
Americas
United States	$	464.3	$	358.0	$	1,314.8	$	1,030.0
Other Americas	33.5		29.7		108.2		80.3
Total Americas	497.8		387.7		1,423.0		1,110.3
Europe, the Middle East, and Africa (“EMEA”)	138.7		110.1		414.7		312.0
Asia Pacific and Japan (“APAC”)	90.1		69.9		256.1		192.8
Total revenue	$	726.6	$	567.7	$	2,093.8	$	1,615.1

The following table presents revenue for groups of similar products and services (in millions):



	Three Months Ended April 30,				Nine Months Ended April 30,
	2019		2018		2019		2018
			(As Adjusted)				(As Adjusted)
Revenue:
Product	$	278.4	$	218.1	$	790.5	$	607.7
Subscription and support
Subscription	258.8		192.0		739.8		544.3
Support	189.4		157.6		563.5		463.1
Total subscription and support	448.2		349.6		1,303.3		1,007.4
Total revenue	$	726.6	$	567.7	$	2,093.8	$	1,615.1

Deferred Contract Costs

The following table presents details of our short-term and long-term deferred contract costs as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019		July 31, 2018
Short-term deferred contract costs	$	125.8	$	113.2
Long-term deferred contract costs	251.8		224.8
Total deferred contract costs	$	377.6	$	338.0

Debt (Notes)

9 Months Ended

Apr. 30, 2019

Debt Disclosure [Abstract]

Debt

Convertible Senior Notes

In June 2014, we issued $575.0 million aggregate principal amount of 0.0% Convertible Senior Notes due 2019 (the “2019 Notes”) and in July 2018, we issued $1.7 billion aggregate principal amount of 0.75% Convertible Senior Notes due 2023 (the “2023 Notes” and, together with the 2019 Notes, the “Notes”). The 2023 Notes bear interest at a fixed rate of 0.75% per year, payable semi-annually in arrears on January 1 and July 1 of each year, beginning on January 1, 2019. Each series of Notes is governed by an indenture between us, as the issuer, and U.S. Bank National Association, as Trustee (individually, each an “Indenture,” and together, the “Indentures”). The Notes of each series are unsecured, unsubordinated obligations and the applicable Indenture governing each series of Notes does not contain any financial covenants or restrictions on the payments of dividends, the incurrence of indebtedness, or the issuance or repurchase of securities by us or any of our subsidiaries. The 2019 Notes and 2023 Notes mature on July 1, 2019 and July 1, 2023, respectively. We cannot redeem either series of Notes prior to the applicable maturity date.

The following table presents details of the Notes (number of shares in millions):



	Conversion Rate per $1,000 Principal	Initial Conversion Price		Convertible Date	Initial Number of Shares
2019 Notes	9.0680	$	110.28	January 1, 2019	5.2
2023 Notes	3.7545	$	266.35	April 1, 2023	6.4

Holders of the Notes may surrender their Notes for conversion at their option at any time prior to the close of business on the business day immediately preceding their respective convertible dates only under the following circumstances:

•

during any fiscal quarter commencing after the fiscal quarters ending on October 31, 2014 and October 31, 2018, for the 2019 Notes and 2023 Notes, respectively (and only during such fiscal quarter), if the last reported sale price of our common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the applicable conversion price for the respective Notes on each applicable trading day (the “sale price condition”);

•

during the five business day period after any five consecutive trading day period (the “measurement period”) in which the trading price per $1,000 principal amount of the applicable series of Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of our common stock and the applicable conversion rate for the respective Notes on each such trading day; or


•	upon the occurrence of specified corporate events.

On or after the respective convertible date, holders may surrender all or any portion of their Notes for conversion at any time prior to the close of business on the second scheduled trading day immediately preceding the applicable maturity date regardless of the foregoing conditions, and such conversions will be settled upon the applicable maturity date. Upon conversion, holders of the Notes of a series will receive cash equal to the aggregate principal amount of the Notes of such series to be converted, and, at our election, cash and/or shares of our common stock for any amounts in excess of the aggregate principal amount of the Notes of such series being converted.

The conversion price will be subject to adjustment in some events. Holders of the Notes of a series who convert their Notes of such series in connection with certain corporate events that constitute a “make-whole fundamental change” under the applicable Indenture are, under certain circumstances, entitled to an increase in the conversion rate for such series of Notes. Additionally, upon the occurrence of a corporate event that constitutes a “fundamental change” under the applicable Indenture, holders of the Notes of such series may require us to repurchase for cash all or a portion of the Notes of such series at a repurchase price equal to 100% of the principal amount of the Notes of such series plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date.

The sale price condition was met for the 2019 Notes during the fiscal quarters ended July 31, 2018 and October 31, 2018. As a result, holders were able to convert their 2019 Notes at any time during the fiscal quarter ended October 31, 2018 and up to January 1, 2019. On or after January 1, 2019, holders may surrender their 2019 Notes for conversion at any time prior to maturity, in accordance with the terms described above. Such conversion requests will settle upon maturity of the 2019 Notes in the fourth quarter of fiscal 2019. Accordingly, the net carrying amount of the 2019 Notes was classified as a current liability and the portion of the equity component representing the conversion option was classified as temporary equity in our condensed consolidated balance sheets as of April 30, 2019. As of April 30, 2019, $159.4 million in aggregate principal amount of the 2019 Notes remained outstanding.

There were no conversions of the 2019 Notes during the three months ended April 30, 2019. The following table presents details of conversions of the 2019 Notes during the nine months ended April 30, 2019 (in millions):



	Nine Months Ended
	April 30, 2019
2019 Notes principal converted and repaid in cash:
Allocated to liability component⁽¹⁾	$	403.4
Allocated to equity component⁽²⁾	12.2
Total principal converted and repaid in cash	$	415.6
Loss on conversions of convertible senior notes⁽³⁾	$	2.6
Shares of common stock issued in connection with conversion of convertible senior notes⁽⁴⁾	1.7

______________


(1)	Recorded as a reduction to convertible senior notes, net in our condensed consolidated balance sheets and calculated by measuring the fair value of a similar liability that did not have an associated convertible feature.


(2)	Recorded as a reduction to additional paid-in capital in our condensed consolidated balance sheets.


(3)	Represents the difference between the cash consideration allocated to the liability component and the net carrying amount of the liability component on the respective settlement dates. The amount is included in other income, net in our condensed consolidated statement of operations.


(4)	Shares of common stock issued to the holders for the conversion value in excess of the principal amount. These shares were fully offset by shares received from the corresponding exercise of the associated note hedges.

The sale price condition was not met for the 2023 Notes during the fiscal quarters ended April 30, 2019 or July 31, 2018. Since the 2023 Notes were not convertible, the net carrying amount of the 2023 Notes was classified as a long-term liability and the equity component was included in additional paid-in capital in our condensed consolidated balance sheets as of April 30, 2019 and July 31, 2018. As of April 30, 2019, all of the 2023 Notes remained outstanding.

The following table sets forth the components of the Notes as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019						July 31, 2018
	2019 Notes		2023 Notes		Total		2019 Notes		2023 Notes		Total
Liability component:
Principal	$	159.4	$	1,693.0	$	1,852.4	$	575.0	$	1,693.0	$	2,268.0
Less: debt discount and debt issuance costs, net of amortization	1.3		278.3		279.6		24.6		323.3		347.9
Net carrying amount	$	158.1	$	1,414.7	$	1,572.8	$	550.4	$	1,369.7	$	1,920.1

Equity component (including amounts classified as temporary equity)	$	30.4	$	315.0	$	345.4	$	109.8	$	315.0	$	424.8

The total estimated fair value of the Notes was $2.3 billion and $2.7 billion at April 30, 2019 and July 31, 2018, respectively. The fair value was determined based on the closing trading price per $100 of the Notes as of the last day of trading for the period. We consider the fair value of the Notes at April 30, 2019 and July 31, 2018 to be a Level 2 measurement. The fair value of the Notes is primarily affected by the trading price of our common stock and market interest rates. As of April 30, 2019, the if-converted value of the 2019 Notes exceeded its principal amount by $191.1 million. Based on the closing price of our common stock on April 30, 2019, the if-converted value of the 2023 Notes was less than its principal amount.

The following table sets forth interest expense recognized related to the Notes (dollars in millions):



	Three Months Ended April 30,																Nine Months Ended April 30,
	2019								2018								2019								2018
	2019 Notes			2023 Notes			Total		2019 Notes			2023 Notes			Total		2019 Notes			2023 Notes			Total		2019 Notes			2023 Notes			Total
Contractual interest expense	$	—		$	3.3		$	3.3	$	—		$	—		$	—	$	—		$	9.6		$	9.6	$	—		$	—		$	—
Amortization of debt discount	1.6			14.7			16.3		5.7			—			5.7		7.6			43.6			51.2		17.1			—			17.1
Amortization of debt issuance costs	0.3			0.5			0.8		0.8			—			0.8		1.0			1.4			2.4		2.1			—			2.1
Total interest expense recognized	$	1.9		$	18.5		$	20.4	$	6.5		$	—		$	6.5	$	8.6		$	54.6		$	63.2	$	19.2		$	—		$	19.2

Effective interest rate of the liability component	4.8		%	5.2		%			4.8		%	—		%			4.8		%	5.2		%			4.8		%	—		%

Note Hedges

To minimize the impact of potential economic dilution upon conversion of the Notes, we entered into separate convertible note hedge transactions (the “2019 Note Hedges,” with respect to the 2019 Notes, and the “2023 Note Hedges,” with respect to the 2023 Notes, and collectively, the “Note Hedges”) with respect to our common stock concurrent with the issuance of each series of Notes.

The following table presents details of the Note Hedges (in millions):

The Note Hedges cover shares of our common stock at a strike price per share that corresponds to the initial applicable conversion price of the applicable series of Notes, which are also subject to adjustment, and are exercisable upon conversion of the applicable series of Notes. The Note Hedges will expire upon maturity of the applicable series of Notes. The Note Hedges are separate transactions and are not part of the terms of the applicable series of the Notes. Holders of the Notes of either series will not have any rights with respect to the Note Hedges. Any shares of our common stock receivable by us under the Note Hedges are excluded from the calculation of diluted earnings per share as they are antidilutive. The aggregate amounts paid for the Note Hedges are included in additional paid-in capital in our consolidated balance sheets.

As a result of the conversions of the 2019 Notes settled during the nine months ended April 30, 2019, we exercised the corresponding portion of our 2019 Note Hedges and received 1.7 million shares of common stock during the period.

Warrants

Separately, but concurrently with the issuance of each series of Notes, we entered into transactions whereby we sold warrants (the “2019 Warrants,” with respect to the 2019 Notes, and the “2023 Warrants,” with respect to the 2023 Notes, and collectively, the “Warrants”) to acquire shares of our common stock, subject to anti-dilution adjustments. The 2019 Warrants and 2023 Warrants are exercisable beginning October 2019 and October 2023, respectively.

The following table presents details of the Warrants (in millions, except per share data):



	Initial Number of Shares	Strike Price per Share		Aggregate Proceeds
2019 Warrants	5.2	$	137.85	$	78.3
2023 Warrants	6.4	$	417.80	$	145.4

The shares issuable under the Warrants will be included in the calculation of diluted earnings per share when the average market value per share of our common stock for the reporting period exceeds the applicable strike price for such series of Warrants. The Warrants are separate transactions and are not part of either series of Notes or Note Hedges and are not remeasured through earnings each reporting period. Holders of the Notes of either series will not have any rights with respect to the Warrants. The aggregate proceeds received from the sale of the Warrants are included in additional paid-in capital in our consolidated balance sheets.

Revolving Credit Facility

On September 4, 2018, we entered into a credit agreement (the “Credit Agreement”) with certain institutional lenders that provides for a $400.0 million unsecured revolving credit facility (the “Credit Facility”), with an option to increase the amount of the Credit Facility by up to an additional $350.0 million, subject to certain conditions. The Credit Facility matures on the earlier of (i) September 4, 2023 and (ii) the date that is 91 days prior to the stated maturity of our 2023 Notes if (a) any of the 2023 Notes are still outstanding and (b) our unrestricted cash and cash equivalents are less than the then outstanding principal amount of our 2023 Notes plus $400.0 million.

The borrowings under the Credit Facility bear interest, at our option, at a base rate plus a spread of 0.00% to 0.75%, or an adjusted LIBO rate plus a spread of 1.00% to 1.75%, in each case with such spread being determined based on our leverage ratio. We are obligated to pay an ongoing commitment fee on undrawn amounts at a rate of 0.125% to 0.250%, depending on our leverage ratio. As of April 30, 2019, there were no amounts outstanding and we were in compliance with all covenants under the Credit Agreement.

Commitments and Contingencies (Notes)

9 Months Ended

Apr. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Leases

We lease our facilities under various non-cancelable operating leases, which expire through the year ending July 31, 2028.

In May 2015 and October 2015, we entered into a total of three lease agreements for approximately 941,000 square feet of corporate office space in Santa Clara, California, which serves as our new corporate headquarters. The leases contain rent holiday periods, scheduled rent increases, lease incentives, and renewal options which allow the lease terms to be extended beyond their expiration dates of July 2028 through July 2046. In September 2017, per the terms of the lease agreements, the landlords exercised their option to amend our lease payment schedules and eliminate our rent holiday periods, which increased our rental payments by $24.4 million, $11.8 million, and $2.0 million for fiscal 2018, 2019, and 2020, respectively. In exchange, we received an upfront cash reimbursement of $38.2 million during the three months ended October 31, 2017, which we have applied and will apply against the future additional rental payments when due. As amended, rental payments under the three lease agreements are approximately $412.0 million over the lease term.

In May 2015, we also entered into a lease agreement for approximately 122,000 square feet of space in Santa Clara, California, to serve as an extension of our previous corporate headquarters. The lease contains scheduled rent increases, lease incentives, and renewal options which allow the lease term to be extended beyond the expiration date of April 2021 through July 2046. Rental payments under the lease agreement are approximately $23.1 million over the lease term. In December 2017, we entered into an agreement to sublease this office space for the remaining lease term. Proceeds from this sublease will be approximately $16.3 million over the sublease term.

In September 2012, we entered into two lease agreements for a total of approximately 300,000 square feet of space in Santa Clara, California, which served as our previous corporate headquarters through August 2017, when we relocated to our new corporate campus. The leases contain rent holiday periods and two separate five-year options to extend the lease term beyond their expiration dates of July 2023. Rental payments under these lease agreements are approximately $94.3 million over the lease term. In August 2017, we exited our previous corporate headquarter facilities and relocated to our new corporate campus, which resulted in the recognition of a cease-use loss of $39.2 million during the year ended July 31, 2018. Due to changes in market conditions in recent months, and the resulting changes to the amount and timing of estimated cash flows from sublease rentals that could be reasonably obtained, we recognized an additional cease-use loss of $4.1 million as general and administrative expense in our condensed consolidated statements of operations during the three and nine months ended April 30, 2019, and a corresponding liability in our condensed consolidated balance sheets. During the three and nine months ended April 30, 2019, we released $2.6 million and $7.6 million, respectively, of the cease-use liability through rental payments. As of April 30, 2019 and July 31, 2018, the remaining balance of the cease-use liability was $25.6 million and $29.1 million, respectively, which is expected to be paid through the end of the lease term in July 2023.

The following table presents details of the aggregate future non-cancelable minimum rental payments under our operating leases as of April 30, 2019 (in millions):



	Amount
Fiscal years ending July 31:
Remaining 2019	$	17.8
2020	73.2



2021	67.2
2022	63.0
2023	60.1
2024 and thereafter	227.7
Committed gross lease payments	509.0
Less: proceeds from sublease rentals	11.2
Net operating lease obligation	$	497.8

Purchase Commitments

Manufacturing Purchase Commitments

Our electronics manufacturing service provider (“EMS provider”) procures components and assembles our products based on our forecasts. These forecasts are based on estimates of demand for our products primarily for the next 12 months, which are in turn based on historical trends and an analysis from our sales and product management organizations, adjusted for overall market conditions. In order to reduce manufacturing lead times and plan for adequate supply, we may issue non-cancelable orders for products and components to our manufacturing partners or component suppliers. As of April 30, 2019, our purchase commitments under such orders were $129.3 million, excluding obligations under contracts that we can cancel without a significant penalty.

Other Purchase Commitments

We have entered into various non-cancelable agreements with third-party providers for our use of certain cloud services, under which we are committed to minimum purchases through the year ending July 31, 2026. The following table presents details of the aggregate future non-cancelable purchase commitments under these agreements as of April 30, 2019 (in millions):



	Amount
Fiscal years ending July 31:
Remaining 2019	$	—
2020	8.0
2021	27.3
2022	47.5
2023	57.5
2024 and thereafter	165.0
Total other purchase commitments	$	305.3

Litigation

We are subject to legal proceedings, claims, and litigation arising in the ordinary course of business, including intellectual property litigation. Such matters are subject to many uncertainties and outcomes are not predictable with assurance. We accrue for contingencies when we believe that a loss is probable and that we can reasonably estimate the amount of any such loss.

To the extent there is a reasonable possibility that a loss exceeding amounts already recognized may be incurred and the amount of such additional loss would be material, we will either disclose the estimated additional loss or state that such an estimate cannot be made. As of April 30, 2019, we have not recorded any significant accruals for loss contingencies associated with such legal proceedings, determined that an unfavorable outcome is probable or reasonably possible, or determined that the amount or range of any possible loss is reasonably estimable.

Stockholders' Equity (Notes)	9 Months Ended
Stockholders' Equity (Notes)	Apr. 30, 2019
Equity [Abstract]
Stockholders’ Equity	Stockholders’ Equity Share Repurchase Program In August 2016, our board of directors authorized a $500.0 million share repurchase program to be funded from available working capital. In February 2017, our board of directors authorized a $500.0 million increase to our repurchase program, bringing the total authorization to $1.0 billion (our “original authorization”). Repurchases could be made at management’s discretion from time to time on the open market, through privately negotiated transactions, transactions structured through investment banking institutions, block purchase techniques, 10b5-1 trading plans, or a combination of the foregoing. This repurchase program expired on December 31, 2018. In February 2019, our board of directors authorized a new $1.0 billion share repurchase program which will be funded from available working capital. Repurchases may be made at management’s discretion from time to time on the open market, through privately negotiated transactions, transactions structured through investment banking institutions, block purchase techniques, 10b5-1 trading plans, or a combination of the foregoing. This repurchase authorization will expire on December 31, 2020, and may be suspended or discontinued at any time. During the nine months ended April 30, 2019, we repurchased and retired 1.9 million shares of our common stock under our original authorization for an aggregate purchase price of $330.0 million, including transaction costs. The total price of the shares repurchased and related transaction costs are reflected as a reduction to common stock and additional paid-in capital on our condensed consolidated balance sheets. As of April 30, 2019, $1.0 billion remained available for future share repurchases under our current repurchase authorization.

Equity Award Plans (Notes)

9 Months Ended

Apr. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Equity Award Plans

Share-Based Compensation Plans

RedLock Inc. 2015 Stock Plan

In connection with our acquisition of RedLock on October 12, 2018, we assumed RedLock’s 2015 Stock Plan, as amended (the “RedLock Plan”), under which the assumed RedLock equity awards were granted. The assumed equity awards will be settled in shares of our common stock and will retain the terms and conditions under which they were originally granted; forfeited awards will not be returned to the RedLock Plan. No additional equity awards will be granted under the RedLock Plan. Refer to Note 6. Acquisitions for more information on the RedLock acquisition and the related equity awards assumed.

Demisto, Inc. 2015 Stock Option Plan

In connection with our acquisition of Demisto on March 28, 2019, we assumed Demisto’s 2015 Stock Option Plan, as amended (the “Demisto Plan”), under which the assumed Demisto equity awards were granted. The assumed equity awards will be settled in shares of our common stock and will retain the terms and conditions under which they were originally granted; forfeited awards will not be returned to the Demisto Plan. No additional equity awards will be granted under the Demisto Plan. Refer to Note 6. Acquisitions for more information on the Demisto acquisition and the related equity awards assumed.

Stock Option Activities

The following table summarizes the stock option and performance stock option (“PSO”) activity under our stock plans during the reporting period (in millions, except per share amounts):



	Stock Options Outstanding							PSOs Outstanding
	Number of Shares		Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value		Number of Shares	Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Balance—July 31, 2018	1.0		$	13.29	3.1	$	199.8	1.2	$	198.50	7.0	$	—
Granted	—		$	—				2.6	$	191.97
Exercised	(0.6	)	$	13.07				—	$	—
Forfeited	—		$	—				—	$	—
Balance—April 30, 2019	0.4		$	13.54	2.5	$	122.7	3.8	$	193.98	6.5	$	206.9
Exercisable—April 30, 2019	0.4		$	13.54	2.5	$	122.7	3.8	$	193.98	6.5	$	206.9

During the nine months ended April 30, 2019, we granted 2.6 million PSOs with both a market condition and a service condition to certain executives. The market condition requires the price of our common stock to equal or exceed $297.75, $397.00, $496.25, and $595.50 (the “stock price targets”) during the four-, five-, six-, and seven-year periods following the date of grant, respectively. To the extent that the stock price targets have been met, one-fourth of the PSOs will vest on the anniversary date of the grant date for such PSOs, subject to continued service. All outstanding PSOs may be exercised prior to vesting (“early exercised”). Shares of common stock issued upon early exercise of the PSOs will be restricted and, at our option, subject to repurchase if the option holder ceases to be a service provider.

The aggregate fair value of the PSOs granted during the nine months ended April 30, 2019 was $154.5 million, which was estimated on the grant date using a Monte Carlo simulation model. The following table summarizes the assumptions used and the resulting grant-date fair values of our PSOs:



	Nine Months Ended
	April 30, 2019
Volatility	35.6% - 36.5%
Dividend yield	—	%
Risk-free interest rate	3.1% - 3.2%
Weighted-average grant-date fair value per share	$56.44 - $59.64

The expected volatility is based on a combination of implied volatility from traded options on our common stock and the historical volatility of our common stock. The dividend yield assumption is based on our current expectations about our anticipated dividend policy. The risk-free interest rate is based on the implied yield available on U.S. Treasury zero-coupon issues with terms equal to the contractual terms of each tranche. The expected term assumption takes into consideration the vesting term and the contractual term of the PSOs. We recognize share-based compensation expense for our PSOs on a straight-line basis over the requisite service period for each separately vesting portion of the award.

Restricted Stock Award (“RSA”), Performance-Based Stock Award (“PSA”), Restricted Stock Unit (“RSU”), and Performance-Based Stock Unit (“PSU”) Activities

The following table summarizes the RSA, PSA, RSU, and PSU activity under our stock plans during the reporting period (in millions, except per share amounts):



	RSAs and PSAs Outstanding				RSUs and PSUs Outstanding
	Number of Shares		Weighted-Average Grant-Date Fair Value Per Share		Number of Shares		Weighted-Average Grant-Date Fair Value Per Share		Weighted-Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Balance—July 31, 2018	0.3		$	160.85	6.7		$	160.20	1.6	$	1,335.2
Granted⁽¹⁾⁽²⁾	—		$	—	3.0		$	206.85
Vested	(0.2	)	$	166.07	(2.1	)	$	156.83
Forfeited	—		$	—	(0.6	)	$	159.19
Balance—April 30, 2019	0.1		$	148.54	7.0		$	181.14	1.5	$	1,738.8

______________


(1)	For PSAs and PSUs, shares granted represents the aggregate maximum number of shares that may be earned and issued with respect to these awards over their full terms.


(2)	Includes 0.3 million RSUs granted under the assumed RedLock Plan and Demisto Plan with a weighted-average grant-date fair value of $219.25 per share.

Our PSAs and PSUs vest over a period of four years from the date of grant. The actual number of PSAs and PSUs earned and eligible to vest are determined based on level of achievement against a pre-established billings target for the fiscal year in which the awards are granted. We recognize share-based compensation expense for our PSAs and PSUs on a straight-line basis over the requisite service period for each separately vesting portion of the award when it is probable that the performance condition will be achieved.

Share-Based Compensation

The following table summarizes share-based compensation included in costs and expenses (in millions):



	Three Months Ended				Nine Months Ended
	April 30,				April 30,
	2019		2018		2019		2018
Cost of product revenue	$	1.3	$	1.7	$	4.3	$	5.5
Cost of subscription and support revenue	17.2		15.1		52.9		50.9
Research and development	45.1		35.4		129.6		108.4
Sales and marketing	54.5		50.7		169.2		155.2
General and administrative	20.1		20.8		75.7		60.2
Total share-based compensation	$	138.2	$	123.7	$	431.7	$	380.2

In connection with our acquisition of RedLock, we accelerated the vesting of certain equity awards and as a result, we recorded $14.2 million of share-based compensation within general and administrative expense during the three months ended October 31, 2018.

As of April 30, 2019, total compensation cost related to unvested share-based awards not yet recognized was $1.4 billion. This cost is expected to be amortized over a weighted-average period of approximately 2.8 years. Future grants will increase the amount of compensation expense to be recorded in these periods.

Income Taxes (Notes)	9 Months Ended
Income Taxes (Notes)	Apr. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our provision for (benefit from) income taxes for the three and nine months ended April 30, 2019 reflects an effective tax rate of 4.3% and (0.3)%, respectively. Our effective tax rate for the nine months ended April 30, 2019 was negative as we recorded a provision for income taxes on year to date losses. The key components of our income tax provision, excluding one-time items, primarily consist of foreign and U.S. state income taxes and withholding taxes. During the nine months ended April 30, 2019, the effect of these key components was primarily offset by one-time tax benefits of $9.4 million and $4.9 million from partial releases of our valuation allowance related to the acquisitions of RedLock and Demisto recorded during the three months ended October 31, 2018 and April 30, 2019, respectively. Our effective tax rates differ from the U.S. statutory tax rate primarily due to deductibility of our share-based compensation, foreign income at other than U.S. tax rates, and changes in our valuation allowance. Our provision for (benefit from) income taxes for the three and nine months ended April 30, 2018 reflects an effective tax rate of 6.5% and (5.7)%. Our effective tax rate for the nine months ended April 30, 2018 was negative as we recorded a provision for income taxes on year to date losses. The key components of our income tax provision primarily consisted of foreign income taxes, withholding taxes, and amortization of our deferred tax charges. In addition, we recorded the following one-time tax benefits during the nine months ended April 30, 2018: $5.8 million due to new tax legislation enacted during the fiscal quarter ended January 31, 2018; $4.6 million due to a partial release of our valuation allowance related to our acquisition of Evident.io, Inc. during the fiscal quarter ended April 30, 2018; and $3.5 million due to an Israeli judicial ruling related to share-based compensation during the fiscal quarter ended April 30, 2018. Our effective tax rates differed from the U.S. statutory tax rate primarily due to deductibility of our share-based compensation, foreign income at other than U.S. tax rates, and changes in our valuation allowance. In December 2017, the Tax Cuts and Jobs Act (“TCJA”) was enacted into law. The SEC staff and FASB previously issued guidance that allowed companies to record provisional amounts for the effects of the TCJA during a measurement period not to extend beyond one year from the enactment date. The measurement period ended in December 2018 and we completed our accounting for the income tax effects of the TCJA during the three months ended January 31, 2019. During the three and nine months ended April 30, 2019, we did not have any significant adjustments to provisional estimates recorded in previous periods. The recorded impact for the effects of the TCJA is based on our current knowledge, assumptions, and interpretations of available guidance. We will continue to monitor the issuance of further guidance and record the necessary adjustments in the period additional guidance is issued.

Net Loss Per Share (Notes)

9 Months Ended

Apr. 30, 2019

Earnings Per Share [Abstract]

Net Loss Per Share

Basic net loss per share is computed by dividing net loss by basic weighted-average shares outstanding during the period. Diluted net loss per share is computed by dividing net loss by diluted weighted-average shares outstanding, including potentially dilutive securities.

The following table presents the computation of basic and diluted net loss per share of common stock (in millions, except per share data):



	Three Months Ended						Nine Months Ended
	April 30,						April 30,
	2019			2018			2019			2018
				(As Adjusted)						(As Adjusted)
Net loss	$	(20.2	)	$	(40.4	)	$	(61.1	)	$	(129.2	)
Weighted-average shares used to compute net loss per share, basic and diluted	94.4			91.9			94.1			91.3
Net loss per share, basic and diluted	$	(0.21	)	$	(0.44	)	$	(0.65	)	$	(1.42	)

The following securities were excluded from the computation of diluted net loss per share of common stock for the periods presented as their effect would have been antidilutive (in millions):



	Three and Nine Months Ended
	April 30,
	2019	2018
Convertible senior notes	7.8	5.2
Warrants related to the issuance of convertible senior notes	11.6	5.2
RSUs and PSUs	7.0	6.1
Options to purchase common stock, including PSOs	4.2	1.2
RSAs and PSAs	0.1	0.4
ESPP shares	0.1	0.1
Total	30.8	18.2

Other Income, Net (Notes)

9 Months Ended

Apr. 30, 2019

Other Income and Expenses [Abstract]

Other Income, Net

The following table sets forth the components of other income, net (in millions):



	Three Months Ended						Nine Months Ended
	April 30,						April 30,
	2019			2018			2019			2018
Interest income	$	18.3		$	6.7		$	51.7		$	17.7
Foreign currency exchange gains (losses), net	(0.1		)	2.7			(1.3		)	0.9
Other	—			(0.8		)	(3.2		)	(0.3		)
Total other income, net	$	18.2		$	8.6		$	47.2		$	18.3

Related Party Transactions (Notes)	9 Months Ended
Related Party Transactions (Notes)	Apr. 30, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Certain members of our board of directors are affiliated with Greylock Partners, a venture capital firm. Entities affiliated with Greylock Partners owned a portion of the outstanding shares of Demisto immediately prior to completion of our acquisition of Demisto on March 28, 2019 and, as a result, received purchase consideration valued at $85.6 million during the three months ended April 30, 2019. Refer to Note 6. Acquisitions for more information on our acquisition of Demisto.

Subsequent Events (Notes)	9 Months Ended
Subsequent Events (Notes)	Apr. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Business Combination In May 2019, we entered into a definitive agreement to acquire Twistlock Ltd. (“Twistlock”), a privately-held container security company, for total consideration of approximately $410.0 million in cash, subject to adjustment. In May 2019, we also entered into a definitive agreement to acquire PureSec Ltd. (“PureSec”), a privately-held serverless security company, for total consideration of approximately $47.0 million in cash, subject to adjustment. We expect the acquisitions will extend our cloud security strategy with the additions of Twistlock and PureSec to our Prisma cloud security offerings. The acquisitions are expected to close during our fourth quarter of fiscal 2019.

Description of Business, Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies (Policies)

9 Months Ended

Apr. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of business, basis of presentation, principles of consolidation, and summary of significant accounting policies

Description of Business

Basis of Presentation and Principles of Consolidation

Summary of Significant Accounting Policies

Recent accounting pronouncements

Recently Adopted Accounting Pronouncements

Implementation Costs Incurred in a Cloud Computing Arrangement

Business Combinations - Definition of a Business

Statement of Cash Flows - Restricted Cash

Income Taxes - Intra-Entity Asset Transfers

Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments

Financial Instruments - Recognition and Measurement

Revenue Recognition

The following tables present the impact of the adoption of the standard on our previously reported results (in millions, except per share data):



	Three Months Ended April 30, 2018									Nine Months Ended April 30, 2018
	As Previously Reported			Impact of Adoption			As Adjusted			As Previously Reported			Impact of Adoption			As Adjusted
Condensed Consolidated Statements of Operations
Product revenue	$	215.2		$	2.9		$	218.1		$	603.9		$	3.8		$	607.7
Subscription and support revenue	351.9			(2.3		)	349.6			1,011.1			(3.7		)	1,007.4
Total revenue	567.1			0.6			567.7			1,615.0			0.1			1,615.1
Total cost of revenue	159.9			—			159.9			460.6			—			460.6
Total operating expenses	458.8			(5.7		)	453.1			1,292.1			(16.3		)	1,275.8
Operating loss	(51.6		)	6.3			(45.3		)	(137.7		)	16.4			(121.3		)
Net loss	(46.7		)	6.3			(40.4		)	(145.6		)	16.4			(129.2		)
Net loss per share, basic and diluted	$	(0.51	)	$	0.07		$	(0.44	)	$	(1.59	)	$	0.17		$	(1.42	)



	July 31, 2018
	As Previously Reported			Impact of Adoption			As Adjusted
Condensed Consolidated Balance Sheet
Accounts receivable, net	$	467.3		$	(0.3	)	$	467.0
Prepaid expenses and other current assets	261.3			6.8			268.1
Other assets	206.8			119.4			326.2
Accrued and other liabilities	107.0			17.6			124.6
Deferred revenue	1,268.9			(55.3		)	1,213.6
Long-term deferred revenue	1,096.0			(30.3		)	1,065.7
Accumulated deficit	$	(984.6	)	$	193.9		$	(790.7	)

The adoption of the standard did not impact net cash flows from operating, investing, or financing activities in our condensed consolidated statements of cash flows.

Recently Issued Accounting Pronouncements

Financial Instruments - Credit Losses

Leases

Revenue recognition

Revenue Recognition

We determine revenue recognition through the following steps:


•	Identification of the contract, or contracts, with a customer.


•	Identification of the performance obligations in the contract.


•	Determination of the transaction price.


•	Allocation of the transaction price to the performance obligations in the contract.


•	Recognition of revenue when, or as, we satisfy a performance obligation.

Revenues are reported net of sales taxes. Shipping charges billed to channel partners are included in revenues and related costs are included in cost of revenue.

Product Revenue

Subscription and Support Revenue

Contracts with Multiple Performance Obligations

Deferred Revenue

Fair value measurements

Fair Value Measurements


•	Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities.


•	Level 2—Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the assets or liabilities, either directly or indirectly through market corroboration, for substantially the full term of the financial instruments.


•	Level 3—Inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value. The inputs require significant management judgment or estimation.

Derivative instruments

Our derivative financial instruments are recorded at fair value, on a gross basis, as either assets or liabilities in our condensed consolidated balance sheets. Gains or losses related to our cash flow hedges are recorded as a component of accumulated other comprehensive income (loss) (“AOCI”) in our condensed consolidated balance sheets and are reclassified into the financial statement line item associated with the underlying hedged transaction in our condensed consolidated statements of operations when the underlying hedged transaction is recognized in earnings. If it becomes probable that the hedged transaction will not occur, the cumulative unrealized gain or loss is reclassified immediately from AOCI into the financial statement line item associated with the underlying hedged transaction in our condensed consolidated statements of operations. Gains or losses related to non-designated derivative instruments are recognized in other income (expense), net in our condensed consolidated statements of operations for each period until the instrument matures, is terminated, is re-designated as a qualified cash flow hedge, or is sold. Derivatives designated as cash flow hedges are classified in our condensed consolidated statements of cash flows in the same manner as the underlying hedged transaction, primarily within cash flows from operating activities.

Deferred contract costs

Deferred Contract Costs

Share-based compensation, PSAs and PSUs

Description of Business, Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Apr. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of impact from adoption of new accounting pronouncement - accounting for revenue contracts with customers

The following tables present the impact of the adoption of the standard on our previously reported results (in millions, except per share data):



	Three Months Ended April 30, 2018									Nine Months Ended April 30, 2018
	As Previously Reported			Impact of Adoption			As Adjusted			As Previously Reported			Impact of Adoption			As Adjusted
Condensed Consolidated Statements of Operations
Product revenue	$	215.2		$	2.9		$	218.1		$	603.9		$	3.8		$	607.7
Subscription and support revenue	351.9			(2.3		)	349.6			1,011.1			(3.7		)	1,007.4
Total revenue	567.1			0.6			567.7			1,615.0			0.1			1,615.1
Total cost of revenue	159.9			—			159.9			460.6			—			460.6
Total operating expenses	458.8			(5.7		)	453.1			1,292.1			(16.3		)	1,275.8
Operating loss	(51.6		)	6.3			(45.3		)	(137.7		)	16.4			(121.3		)
Net loss	(46.7		)	6.3			(40.4		)	(145.6		)	16.4			(129.2		)
Net loss per share, basic and diluted	$	(0.51	)	$	0.07		$	(0.44	)	$	(1.59	)	$	0.17		$	(1.42	)



	July 31, 2018
	As Previously Reported			Impact of Adoption			As Adjusted
Condensed Consolidated Balance Sheet
Accounts receivable, net	$	467.3		$	(0.3	)	$	467.0
Prepaid expenses and other current assets	261.3			6.8			268.1
Other assets	206.8			119.4			326.2
Accrued and other liabilities	107.0			17.6			124.6
Deferred revenue	1,268.9			(55.3		)	1,213.6
Long-term deferred revenue	1,096.0			(30.3		)	1,065.7
Accumulated deficit	$	(984.6	)	$	193.9		$	(790.7	)

Revenue (Tables)

9 Months Ended

Apr. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenue from external customers by geographic areas

The following table presents revenue by geographic theater (in millions):



	Three Months Ended April 30,				Nine Months Ended April 30,
	2019		2018		2019		2018
			(As Adjusted)				(As Adjusted)
Revenue:
Americas
United States	$	464.3	$	358.0	$	1,314.8	$	1,030.0
Other Americas	33.5		29.7		108.2		80.3
Total Americas	497.8		387.7		1,423.0		1,110.3
Europe, the Middle East, and Africa (“EMEA”)	138.7		110.1		414.7		312.0
Asia Pacific and Japan (“APAC”)	90.1		69.9		256.1		192.8
Total revenue	$	726.6	$	567.7	$	2,093.8	$	1,615.1

Revenue from external customers by products and services

The following table presents revenue for groups of similar products and services (in millions):



	Three Months Ended April 30,				Nine Months Ended April 30,
	2019		2018		2019		2018
			(As Adjusted)				(As Adjusted)
Revenue:
Product	$	278.4	$	218.1	$	790.5	$	607.7
Subscription and support
Subscription	258.8		192.0		739.8		544.3
Support	189.4		157.6		563.5		463.1
Total subscription and support	448.2		349.6		1,303.3		1,007.4
Total revenue	$	726.6	$	567.7	$	2,093.8	$	1,615.1

Fair Value Measurements (Tables)

9 Months Ended

Apr. 30, 2019

Fair Value Disclosures [Abstract]

Schedule of fair value of financial assets and liabilities



	April 30, 2019								July 31, 2018
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	155.0	$	—	$	—	$	155.0	$	1,512.3	$	—	$	—	$	1,512.3
Commercial paper	—		27.0		—		27.0		—		52.0		—		52.0
Corporate debt securities	—		15.0		—		15.0		—		—		—		—
U.S. government and agency securities	—		340.0		—		340.0		—		397.3		—		397.3
Total cash equivalents	155.0		382.0		—		537.0		1,512.3		449.3		—		1,961.6
Short-term investments:
Certificates of deposit	—		—		—		—		—		5.4		—		5.4
Non-U.S. government securities	—		—		—		—		—		20.0		—		20.0
Commercial paper	—		19.5		—		19.5		—		22.3		—		22.3
Corporate debt securities	—		269.8		—		269.8		—		139.8		—		139.8
U.S. government and agency securities	—		1,443.9		—		1,443.9		—		709.0		—		709.0
Total short-term investments	—		1,733.2		—		1,733.2		—		896.5		—		896.5
Long-term investments:
Corporate debt securities	—		271.3		—		271.3		—		153.6		—		153.6
U.S. government and agency securities	—		398.6		—		398.6		—		393.9		—		393.9
Total long-term investments	—		669.9		—		669.9		—		547.5		—		547.5
Prepaid expenses and other current assets:
Foreign currency forward contracts	—		0.1		—		0.1		—		—		—		—
Total prepaid expenses and other current assets	—		0.1		—		0.1		—		—		—		—
Total assets measured at fair value	$	155.0	$	2,785.2	$	—	$	2,940.2	$	1,512.3	$	1,893.3	$	—	$	3,405.6

Accrued and other liabilities:
Foreign currency forward contracts	$	—	$	5.3	$	—	$	5.3	$	—	$	6.9	$	—	$	6.9
Total accrued and other liabilities	—		5.3		—		5.3		—		6.9		—		6.9
Total liabilities measured at fair value	$	—	$	5.3	$	—	$	5.3	$	—	$	6.9	$	—	$	6.9

Cash Equivalents and Investments (Tables)

9 Months Ended

Apr. 30, 2019

Investments, Debt and Equity Securities [Abstract]

Schedule of available-for-sale securities

The following tables summarize the amortized cost, unrealized gains and losses, and fair value of our available-for-sale securities as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Cash equivalents:
Commercial paper	$	27.0	$	—	$	—		$	27.0
Corporate debt securities	15.0		—		—			15.0
U.S. government and agency securities	340.0		—		—			340.0
Total available-for-sale cash equivalents	$	382.0	$	—	$	—		$	382.0
Investments:
Commercial paper	$	19.5	$	—	$	—		$	19.5
Corporate debt securities	540.5		1.3		(0.7		)	541.1
U.S. government and agency securities	1,843.2		1.6		(2.3		)	1,842.5
Total available-for-sale investments	$	2,403.2	$	2.9	$	(3.0	)	$	2,403.1



	July 31, 2018
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Cash equivalents:
Commercial paper	$	52.0	$	—	$	—		$	52.0
U.S. government and agency securities	397.3		—		—			397.3
Total available-for-sale cash equivalents	$	449.3	$	—	$	—		$	449.3
Investments:
Certificates of deposit	$	5.4	$	—	$	—		$	5.4
Non-U.S. government securities	20.0		—		—			20.0
Commercial paper	22.3		—		—			22.3
Corporate debt securities	295.9		—		(2.5		)	293.4
U.S. government and agency securities	1,110.6		—		(7.7		)	1,102.9
Total available-for-sale investments	$	1,454.2	$	—	$	(10.2	)	$	1,444.0

Schedule of contractual maturities of available-for-sale securities

The following table summarizes the amortized cost and fair value of our available-for-sale securities as of April 30, 2019, by contractual years-to-maturity (in millions):



	Amortized Cost		Fair Value
Due within one year	$	2,116.0	$	2,115.2
Due between one and three years	669.2		669.9
Total	$	2,785.2	$	2,785.1

Acquisitions (Tables)

9 Months Ended

Apr. 30, 2019

Demisto, Inc.

Business Acquisition

Schedule of purchase consideration

The total purchase consideration for the acquisition of Demisto was $474.2 million, which consisted of the following (in millions):



	Amount
Cash	$	250.0
Common stock (0.9 million shares)	214.7
Fair value of replacement equity awards	9.5
Total purchase consideration	$	474.2

Schedule of recognized identified assets acquired and liabilities assumed



	Amount
Goodwill	$	387.8
Identified intangible assets	76.3
Cash	25.9
Net liabilities assumed	(15.8		)
Total	$	474.2

Schedule of finite-lived intangible assets acquired as part of business combination

The following table presents details of the identified intangible assets acquired (in millions, except years):



	Fair Value		Estimated Useful Life
Developed technology	$	56.6	6 years
Customer relationships	19.7		6 years
Total	$	76.3

RedLock, Inc.

Business Acquisition

Schedule of recognized identified assets acquired and liabilities assumed



	Amount
Goodwill	$	113.6
Identified intangible assets	54.8
Net liabilities assumed	(10.2		)
Total	$	158.2

Schedule of finite-lived intangible assets acquired as part of business combination

The following table presents details of the identified intangible assets acquired (in millions, except years):



	Fair Value		Estimated Useful Life
Developed technology	$	48.6	4 years
Customer relationships	5.3		8 years
Trade name and trademarks	0.9		6 months
Total	$	54.8

Goodwill and Intangible Assets (Tables)

9 Months Ended

Apr. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill

The following table presents details of our goodwill during the nine months ended April 30, 2019 (in millions):



	Amount
Balance as of July 31, 2018	$	522.8
Goodwill acquired	504.5
Balance as of April 30, 2019	$	1,027.3

Schedule of purchased finite-lived intangible assets by major class

The following table presents details of our purchased intangible assets as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019							July 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Intangible assets subject to amortization:
Developed technology	$	259.9	$	(65.2	)	$	194.7	$	154.7	$	(38.2	)	$	116.5
Customer relationships	37.2		(3.2		)	34.0		12.2		(1.2		)	11.0
Acquired intellectual property	8.9		(5.0		)	3.9		8.9		(4.5		)	4.4
Trade name and trademarks	9.4		(9.4		)	—		8.5		(0.4		)	8.1
Other	2.2		(2.2		)	—		2.2		(2.2		)	—
Total intangible assets subject to amortization	317.6		(85.0		)	232.6		186.5		(46.5		)	140.0
Intangible assets not subject to amortization:
In-process research and development	1.6		—			1.6		0.8		—			0.8
Total purchased intangible assets	$	319.2	$	(85.0	)	$	234.2	$	187.3	$	(46.5	)	$	140.8

Schedule of purchased indefinite-lived intangible assets by major class

The following table presents details of our purchased intangible assets as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019							July 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Intangible assets subject to amortization:
Developed technology	$	259.9	$	(65.2	)	$	194.7	$	154.7	$	(38.2	)	$	116.5
Customer relationships	37.2		(3.2		)	34.0		12.2		(1.2		)	11.0
Acquired intellectual property	8.9		(5.0		)	3.9		8.9		(4.5		)	4.4
Trade name and trademarks	9.4		(9.4		)	—		8.5		(0.4		)	8.1
Other	2.2		(2.2		)	—		2.2		(2.2		)	—
Total intangible assets subject to amortization	317.6		(85.0		)	232.6		186.5		(46.5		)	140.0
Intangible assets not subject to amortization:
In-process research and development	1.6		—			1.6		0.8		—			0.8
Total purchased intangible assets	$	319.2	$	(85.0	)	$	234.2	$	187.3	$	(46.5	)	$	140.8

Future amortization expense of intangible assets

The following table summarizes estimated future amortization expense of our intangible assets as of April 30, 2019 (in millions):



	Amount
Fiscal years ending July 31:
Remaining 2019	$	14.3
2020	56.9
2021	54.9
2022	50.4
2023	24.5
2024 and thereafter	31.6
Total future amortization expense	$	232.6

Deferred Contract Costs (Tables)

9 Months Ended

Apr. 30, 2019

Revenue from Contract with Customer [Abstract]

Schedule of deferred contract costs

The following table presents details of our short-term and long-term deferred contract costs as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019		July 31, 2018
Short-term deferred contract costs	$	125.8	$	113.2
Long-term deferred contract costs	251.8		224.8
Total deferred contract costs	$	377.6	$	338.0

Debt (Tables)

9 Months Ended

Apr. 30, 2019

Debt Disclosure [Abstract]

Convertible senior notes details

The following table presents details of the Notes (number of shares in millions):



	Conversion Rate per $1,000 Principal	Initial Conversion Price		Convertible Date	Initial Number of Shares
2019 Notes	9.0680	$	110.28	January 1, 2019	5.2
2023 Notes	3.7545	$	266.35	April 1, 2023	6.4

2019 Notes conversions details

The following table presents details of conversions of the 2019 Notes during the nine months ended April 30, 2019 (in millions):



	Nine Months Ended
	April 30, 2019
2019 Notes principal converted and repaid in cash:
Allocated to liability component⁽¹⁾	$	403.4
Allocated to equity component⁽²⁾	12.2
Total principal converted and repaid in cash	$	415.6
Loss on conversions of convertible senior notes⁽³⁾	$	2.6
Shares of common stock issued in connection with conversion of convertible senior notes⁽⁴⁾	1.7

______________


(1)	Recorded as a reduction to convertible senior notes, net in our condensed consolidated balance sheets and calculated by measuring the fair value of a similar liability that did not have an associated convertible feature.


(2)	Recorded as a reduction to additional paid-in capital in our condensed consolidated balance sheets.


(3)	Represents the difference between the cash consideration allocated to the liability component and the net carrying amount of the liability component on the respective settlement dates. The amount is included in other income, net in our condensed consolidated statement of operations.


(4)	Shares of common stock issued to the holders for the conversion value in excess of the principal amount. These shares were fully offset by shares received from the corresponding exercise of the associated note hedges.

Components of convertible senior notes

The following table sets forth the components of the Notes as of April 30, 2019 and July 31, 2018 (in millions):



	April 30, 2019						July 31, 2018
	2019 Notes		2023 Notes		Total		2019 Notes		2023 Notes		Total
Liability component:
Principal	$	159.4	$	1,693.0	$	1,852.4	$	575.0	$	1,693.0	$	2,268.0
Less: debt discount and debt issuance costs, net of amortization	1.3		278.3		279.6		24.6		323.3		347.9
Net carrying amount	$	158.1	$	1,414.7	$	1,572.8	$	550.4	$	1,369.7	$	1,920.1

Equity component (including amounts classified as temporary equity)	$	30.4	$	315.0	$	345.4	$	109.8	$	315.0	$	424.8

Interest expense recognized related to the convertible senior notes

The following table sets forth interest expense recognized related to the Notes (dollars in millions):



	Three Months Ended April 30,																Nine Months Ended April 30,
	2019								2018								2019								2018
	2019 Notes			2023 Notes			Total		2019 Notes			2023 Notes			Total		2019 Notes			2023 Notes			Total		2019 Notes			2023 Notes			Total
Contractual interest expense	$	—		$	3.3		$	3.3	$	—		$	—		$	—	$	—		$	9.6		$	9.6	$	—		$	—		$	—
Amortization of debt discount	1.6			14.7			16.3		5.7			—			5.7		7.6			43.6			51.2		17.1			—			17.1
Amortization of debt issuance costs	0.3			0.5			0.8		0.8			—			0.8		1.0			1.4			2.4		2.1			—			2.1
Total interest expense recognized	$	1.9		$	18.5		$	20.4	$	6.5		$	—		$	6.5	$	8.6		$	54.6		$	63.2	$	19.2		$	—		$	19.2

Effective interest rate of the liability component	4.8		%	5.2		%			4.8		%	—		%			4.8		%	5.2		%			4.8		%	—		%

Note hedges details

The following table presents details of the Note Hedges (in millions):

Warrants details

The following table presents details of the Warrants (in millions, except per share data):



	Initial Number of Shares	Strike Price per Share		Aggregate Proceeds
2019 Warrants	5.2	$	137.85	$	78.3
2023 Warrants	6.4	$	417.80	$	145.4

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

+ References + Details

Commitments and Contingencies (Tables)

9 Months Ended

Apr. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Schedule of future non-cancelable minimum rental payments for operating leases

The following table presents details of the aggregate future non-cancelable minimum rental payments under our operating leases as of April 30, 2019 (in millions):



	Amount
Fiscal years ending July 31:
Remaining 2019	$	17.8
2020	73.2



2021	67.2
2022	63.0
2023	60.1
2024 and thereafter	227.7
Committed gross lease payments	509.0
Less: proceeds from sublease rentals	11.2
Net operating lease obligation	$	497.8

Cloud services

Unrecorded Unconditional Purchase Obligation

Schedule of future non-cancelable purchase commitments for cloud services



	Amount
Fiscal years ending July 31:
Remaining 2019	$	—
2020	8.0
2021	27.3
2022	47.5
2023	57.5
2024 and thereafter	165.0
Total other purchase commitments	$	305.3

Equity Award Plans (Tables)

9 Months Ended

Apr. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of stock option and performance stock option (PSO) activity

The following table summarizes the stock option and performance stock option (“PSO”) activity under our stock plans during the reporting period (in millions, except per share amounts):



	Stock Options Outstanding							PSOs Outstanding
	Number of Shares		Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value		Number of Shares	Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Balance—July 31, 2018	1.0		$	13.29	3.1	$	199.8	1.2	$	198.50	7.0	$	—
Granted	—		$	—				2.6	$	191.97
Exercised	(0.6	)	$	13.07				—	$	—
Forfeited	—		$	—				—	$	—
Balance—April 30, 2019	0.4		$	13.54	2.5	$	122.7	3.8	$	193.98	6.5	$	206.9
Exercisable—April 30, 2019	0.4		$	13.54	2.5	$	122.7	3.8	$	193.98	6.5	$	206.9

Schedule of assumptions used and resulting grant-date fair values of our PSOs

The following table summarizes the assumptions used and the resulting grant-date fair values of our PSOs:



	Nine Months Ended
	April 30, 2019
Volatility	35.6% - 36.5%
Dividend yield	—	%
Risk-free interest rate	3.1% - 3.2%
Weighted-average grant-date fair value per share	$56.44 - $59.64

Schedule of restricted stock award (“RSA”), performance-based stock award (“PSA”), restricted stock unit (“RSU”), and performance-based stock unit (“PSU”) activities

The following table summarizes the RSA, PSA, RSU, and PSU activity under our stock plans during the reporting period (in millions, except per share amounts):



	RSAs and PSAs Outstanding				RSUs and PSUs Outstanding
	Number of Shares		Weighted-Average Grant-Date Fair Value Per Share		Number of Shares		Weighted-Average Grant-Date Fair Value Per Share		Weighted-Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Balance—July 31, 2018	0.3		$	160.85	6.7		$	160.20	1.6	$	1,335.2
Granted⁽¹⁾⁽²⁾	—		$	—	3.0		$	206.85
Vested	(0.2	)	$	166.07	(2.1	)	$	156.83
Forfeited	—		$	—	(0.6	)	$	159.19
Balance—April 30, 2019	0.1		$	148.54	7.0		$	181.14	1.5	$	1,738.8

______________


(1)	For PSAs and PSUs, shares granted represents the aggregate maximum number of shares that may be earned and issued with respect to these awards over their full terms.


(2)	Includes 0.3 million RSUs granted under the assumed RedLock Plan and Demisto Plan with a weighted-average grant-date fair value of $219.25 per share.

Schedule of allocation of share-based compensation expense

The following table summarizes share-based compensation included in costs and expenses (in millions):



	Three Months Ended				Nine Months Ended
	April 30,				April 30,
	2019		2018		2019		2018
Cost of product revenue	$	1.3	$	1.7	$	4.3	$	5.5
Cost of subscription and support revenue	17.2		15.1		52.9		50.9
Research and development	45.1		35.4		129.6		108.4
Sales and marketing	54.5		50.7		169.2		155.2
General and administrative	20.1		20.8		75.7		60.2
Total share-based compensation	$	138.2	$	123.7	$	431.7	$	380.2

Net Loss Per Share (Tables)

9 Months Ended

Apr. 30, 2019

Earnings Per Share [Abstract]

Computation of basic and diluted net loss per share of common stock

The following table presents the computation of basic and diluted net loss per share of common stock (in millions, except per share data):



	Three Months Ended						Nine Months Ended
	April 30,						April 30,
	2019			2018			2019			2018
				(As Adjusted)						(As Adjusted)
Net loss	$	(20.2	)	$	(40.4	)	$	(61.1	)	$	(129.2	)
Weighted-average shares used to compute net loss per share, basic and diluted	94.4			91.9			94.1			91.3
Net loss per share, basic and diluted	$	(0.21	)	$	(0.44	)	$	(0.65	)	$	(1.42	)

Schedule of antidilutive securities excluded from the computation of net loss per share

The following securities were excluded from the computation of diluted net loss per share of common stock for the periods presented as their effect would have been antidilutive (in millions):



	Three and Nine Months Ended
	April 30,
	2019	2018
Convertible senior notes	7.8	5.2
Warrants related to the issuance of convertible senior notes	11.6	5.2
RSUs and PSUs	7.0	6.1
Options to purchase common stock, including PSOs	4.2	1.2
RSAs and PSAs	0.1	0.4
ESPP shares	0.1	0.1
Total	30.8	18.2

Other Income, Net (Tables)

9 Months Ended

Apr. 30, 2019

Other Income and Expenses [Abstract]

Schedule of components of other income, net

The following table sets forth the components of other income, net (in millions):



	Three Months Ended						Nine Months Ended
	April 30,						April 30,
	2019			2018			2019			2018
Interest income	$	18.3		$	6.7		$	51.7		$	17.7
Foreign currency exchange gains (losses), net	(0.1		)	2.7			(1.3		)	0.9
Other	—			(0.8		)	(3.2		)	(0.3		)
Total other income, net	$	18.2		$	8.6		$	47.2		$	18.3

Description of Business, Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies (Recently Adopted Accounting Pronouncements - Intra-Entity Asset Transfers) (Details) $ in Millions	Aug. 01, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle
Cumulative-effect adjustment from adoption - increase in accumulated deficit	$ 28.3
Retained earnings
New Accounting Pronouncements or Change in Accounting Principle
Cumulative-effect adjustment from adoption - increase in accumulated deficit	28.3
Retained earnings \| New accounting pronouncement - intra-entity asset transfers
New Accounting Pronouncements or Change in Accounting Principle
Cumulative-effect adjustment from adoption - increase in accumulated deficit	$ 28.3

Description of Business, Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies (Recently Adopted Accounting Pronouncements - Revenue Recognition) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018	Jul. 31, 2018	Jul. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle
Deferred contract costs, amortization period	5 years		5 years
Income Statement
Revenue	$ 726.6	$ 567.7	$ 2,093.8	$ 1,615.1
Cost of revenue	204.9	159.9	591.0	460.6
Total operating expenses	540.4	453.1	1,547.0	1,275.8
Operating loss	(18.7)	(45.3)	(44.2)	(121.3)
Net loss	$ (20.2)	$ (40.4)	$ (61.1)	$ (129.2)
Net loss per share, basic and diluted (in usd per share)	$ (0.21)	$ (0.44)	$ (0.65)	$ (1.42)
Statement of Financial Position
Accounts receivable, net	$ 407.5		$ 407.5		$ 467.0
Prepaid expenses and other current assets	261.9		261.9		268.1
Other assets	337.9		337.9		326.2
Accrued and other liabilities	178.5		178.5		124.6
Deferred revenue	1,449.6		1,449.6		1,213.6
Long-term deferred revenue	1,182.6		1,182.6		1,065.7
Accumulated deficit	(880.1)		(880.1)		(790.7)
New accounting pronouncement - accounting for revenue contracts with customers \| Cumulative effect adjustment from adoption - decrease in accumulated deficit
Statement of Financial Position
Accumulated deficit						$ 168.2
Product
Income Statement
Revenue	278.4	$ 218.1	790.5	$ 607.7
Cost of revenue	78.0	68.9	233.7	190.4
Subscription and support
Income Statement
Revenue	448.2	349.6	1,303.3	1,007.4
Cost of revenue	$ 126.9	91.0	$ 357.3	270.2
As previously reported
Income Statement
Revenue		567.1		1,615.0
Cost of revenue		159.9		460.6
Total operating expenses		458.8		1,292.1
Operating loss		(51.6)		(137.7)
Net loss		$ (46.7)		$ (145.6)
Net loss per share, basic and diluted (in usd per share)		$ (0.51)		$ (1.59)
Statement of Financial Position
Accounts receivable, net					467.3
Prepaid expenses and other current assets					261.3
Other assets					206.8
Accrued and other liabilities					107.0
Deferred revenue					1,268.9
Long-term deferred revenue					1,096.0
Accumulated deficit					(984.6)
As previously reported \| Product
Income Statement
Revenue		$ 215.2		$ 603.9
As previously reported \| Subscription and support
Income Statement
Revenue		351.9		1,011.1
Impact of adoption \| New accounting pronouncement - accounting for revenue contracts with customers
Income Statement
Revenue		0.6		0.1
Cost of revenue		0.0		0.0
Total operating expenses		(5.7)		(16.3)
Operating loss		6.3		16.4
Net loss		$ 6.3		$ 16.4
Net loss per share, basic and diluted (in usd per share)		$ 0.07		$ 0.17
Statement of Financial Position
Accounts receivable, net					(0.3)
Prepaid expenses and other current assets					6.8
Other assets					119.4
Accrued and other liabilities					17.6
Deferred revenue					(55.3)
Long-term deferred revenue					(30.3)
Accumulated deficit					$ 193.9
Impact of adoption \| Product \| New accounting pronouncement - accounting for revenue contracts with customers
Income Statement
Revenue		$ 2.9		$ 3.8
Impact of adoption \| Subscription and support \| New accounting pronouncement - accounting for revenue contracts with customers
Income Statement
Revenue		$ (2.3)		$ (3.7)

Revenue (Revenue Recognition) (Details)	9 Months Ended
Revenue (Revenue Recognition) (Details)	Apr. 30, 2019
Minimum
Revenue from Contract with Customer
Performance obligation, contract term	1 year
Maximum
Revenue from Contract with Customer
Performance obligation, contract term	5 years

Revenue (Deferred Revenue) (Details) $ in Millions	9 Months Ended
Revenue (Deferred Revenue) (Details) $ in Millions	Apr. 30, 2019 USD ($)
Revenue from Contract with Customer [Abstract]
Revenue recognized from opening deferred revenue balance	$ 955.0

Revenue (Remaining Performance Obligations) (Details) $ in Billions	Apr. 30, 2019 USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligations	$ 2.7
Remaining Performance Obligations, Expected Timing of Satisfaction, Start Date: 2019-05-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligations	$ 1.5
Remaining Performance Obligations, Expected Timing of Satisfaction
Remaining performance obligations, expected timing of satisfaction, period	12 months

Revenue (Disaggregation of Revenue - Geographic Theater) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Disaggregation of Revenue
Revenue	$ 726.6	$ 567.7	$ 2,093.8	$ 1,615.1
United States
Disaggregation of Revenue
Revenue	464.3	358.0	1,314.8	1,030.0
Other Americas
Disaggregation of Revenue
Revenue	33.5	29.7	108.2	80.3
Total Americas
Disaggregation of Revenue
Revenue	497.8	387.7	1,423.0	1,110.3
EMEA
Disaggregation of Revenue
Revenue	138.7	110.1	414.7	312.0
APAC
Disaggregation of Revenue
Revenue	$ 90.1	$ 69.9	$ 256.1	$ 192.8

Revenue (Disaggregation of Revenue - Type of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Revenue:
Revenue	$ 726.6	$ 567.7	$ 2,093.8	$ 1,615.1
Product
Revenue:
Revenue	278.4	218.1	790.5	607.7
Subscription
Revenue:
Revenue	258.8	192.0	739.8	544.3
Support
Revenue:
Revenue	189.4	157.6	563.5	463.1
Subscription and support
Revenue:
Revenue	$ 448.2	$ 349.6	$ 1,303.3	$ 1,007.4

Fair Value Measurements (Details) - Fair value, measurements, recurring - USD ($) $ in Millions	Apr. 30, 2019	Jul. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	$ 537.0	$ 1,961.6
Short-term investments	1,733.2	896.5
Long-term investments	669.9	547.5
Prepaid expenses and other current assets	0.1	0.0
Total assets measured at fair value	2,940.2	3,405.6
Accrued and other liabilities	5.3	6.9
Total liabilities measured at fair value	5.3	6.9
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	155.0	1,512.3
Short-term investments	0.0	0.0
Long-term investments	0.0	0.0
Prepaid expenses and other current assets	0.0	0.0
Total assets measured at fair value	155.0	1,512.3
Accrued and other liabilities	0.0	0.0
Total liabilities measured at fair value	0.0	0.0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	382.0	449.3
Short-term investments	1,733.2	896.5
Long-term investments	669.9	547.5
Prepaid expenses and other current assets	0.1	0.0
Total assets measured at fair value	2,785.2	1,893.3
Accrued and other liabilities	5.3	6.9
Total liabilities measured at fair value	5.3	6.9
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0.0	0.0
Short-term investments	0.0	0.0
Long-term investments	0.0	0.0
Prepaid expenses and other current assets	0.0	0.0
Total assets measured at fair value	0.0	0.0
Accrued and other liabilities	0.0	0.0
Total liabilities measured at fair value	0.0	0.0
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	155.0	1,512.3
Money market funds \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	155.0	1,512.3
Money market funds \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0.0	0.0
Money market funds \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0.0	0.0
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	27.0	52.0
Short-term investments	19.5	22.3
Commercial paper \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0.0	0.0
Short-term investments	0.0	0.0
Commercial paper \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	27.0	52.0
Short-term investments	19.5	22.3
Commercial paper \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0.0	0.0
Short-term investments	0.0	0.0
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	15.0	0.0
Short-term investments	269.8	139.8
Long-term investments	271.3	153.6
Corporate debt securities \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0.0	0.0
Short-term investments	0.0	0.0
Long-term investments	0.0	0.0
Corporate debt securities \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	15.0	0.0
Short-term investments	269.8	139.8
Long-term investments	271.3	153.6
Corporate debt securities \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0.0	0.0
Short-term investments	0.0	0.0
Long-term investments	0.0	0.0
U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	340.0	397.3
Short-term investments	1,443.9	709.0
Long-term investments	398.6	393.9
U.S. government and agency securities \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0.0	0.0
Short-term investments	0.0	0.0
Long-term investments	0.0	0.0
U.S. government and agency securities \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	340.0	397.3
Short-term investments	1,443.9	709.0
Long-term investments	398.6	393.9
U.S. government and agency securities \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0.0	0.0
Short-term investments	0.0	0.0
Long-term investments	0.0	0.0
Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	0.0	5.4
Certificates of deposit \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	0.0	0.0
Certificates of deposit \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	0.0	5.4
Certificates of deposit \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	0.0	0.0
Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	0.0	20.0
Non-U.S. government securities \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	0.0	0.0
Non-U.S. government securities \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	0.0	20.0
Non-U.S. government securities \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	0.0	0.0
Foreign currency forward contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreign currency forward contracts assets	0.1	0.0
Foreign currency forward contracts liabilities	5.3	6.9
Foreign currency forward contracts \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreign currency forward contracts assets	0.0	0.0
Foreign currency forward contracts liabilities	0.0	0.0
Foreign currency forward contracts \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreign currency forward contracts assets	0.1	0.0
Foreign currency forward contracts liabilities	5.3	6.9
Foreign currency forward contracts \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreign currency forward contracts assets	0.0	0.0
Foreign currency forward contracts liabilities	$ 0.0	$ 0.0

Cash Equivalents and Investments (Available-for-Sale Securities) (Details) - USD ($) $ in Millions	Apr. 30, 2019	Jul. 31, 2018
Debt Securities, Available-for-sale
Amortized cost	$ 2,785.2
Fair value	2,785.1
Cash equivalents
Debt Securities, Available-for-sale
Amortized cost	382.0	$ 449.3
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	382.0	449.3
Cash equivalents \| Commercial paper
Debt Securities, Available-for-sale
Amortized cost	27.0	52.0
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	27.0	52.0
Cash equivalents \| U.S. government and agency securities
Debt Securities, Available-for-sale
Amortized cost	340.0	397.3
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	340.0	397.3
Cash equivalents \| Corporate debt securities
Debt Securities, Available-for-sale
Amortized cost	15.0
Unrealized gains	0.0
Unrealized losses	0.0
Fair value	15.0
Investments
Debt Securities, Available-for-sale
Amortized cost	2,403.2	1,454.2
Unrealized gains	2.9	0.0
Unrealized losses	(3.0)	(10.2)
Fair value	2,403.1	1,444.0
Investments \| Commercial paper
Debt Securities, Available-for-sale
Amortized cost	19.5	22.3
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	19.5	22.3
Investments \| U.S. government and agency securities
Debt Securities, Available-for-sale
Amortized cost	1,843.2	1,110.6
Unrealized gains	1.6	0.0
Unrealized losses	(2.3)	(7.7)
Fair value	1,842.5	1,102.9
Investments \| Certificates of deposit
Debt Securities, Available-for-sale
Amortized cost		5.4
Unrealized gains		0.0
Unrealized losses		0.0
Fair value		5.4
Investments \| Non-U.S. government securities
Debt Securities, Available-for-sale
Amortized cost		20.0
Unrealized gains		0.0
Unrealized losses		0.0
Fair value		20.0
Investments \| Corporate debt securities
Debt Securities, Available-for-sale
Amortized cost	540.5	295.9
Unrealized gains	1.3	0.0
Unrealized losses	(0.7)	(2.5)
Fair value	$ 541.1	$ 293.4

Cash Equivalents and Investments (Available-for-Sale Securities, Contractual Maturities) (Details) $ in Millions	Apr. 30, 2019 USD ($)
Amortized Cost
Due within one year	$ 2,116.0
Due between one and three years	669.2
Amortized cost	2,785.2
Fair Value
Due within one year	2,115.2
Due between one and three years	669.9
Total fair value	$ 2,785.1

Cash Equivalents and Investments (Marketable Equity Securities) (Details) - USD ($) $ in Millions	Apr. 30, 2019	Jul. 31, 2018
Cash and cash equivalents \| Marketable equity securities \| Money market funds
Marketable Equity Securities
Marketable equity securities	$ 155.0	$ 1,500.0

Derivative Instruments (Details) - USD ($) $ in Millions	9 Months Ended
Derivative Instruments (Details) - USD ($) $ in Millions	Apr. 30, 2019	Jul. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Maximum contract term of cash flow hedge	12 months
Notional amount of derivatives	$ 142.8	$ 288.5

Acquisitions (Supplementary Information) (Details) - USD ($) shares in Millions, $ in Millions	Mar. 28, 2019	Oct. 12, 2018
Demisto, Inc.
Business Acquisition
Percentage of voting equity interest acquired	100.00%
Total fair value of replacement equity awards	$ 105.2
RedLock, Inc.
Business Acquisition
Percentage of voting equity interest acquired		100.00%
Total fair value of equity awards assumed		$ 57.4
Restricted Common Stock \| Demisto, Inc.
Business Acquisition
Restricted common stock issued (in shares)	0.3

Acquisitions (Consideration Transferred) (Details) - USD ($) shares in Millions, $ in Millions			9 Months Ended
	Mar. 28, 2019	Oct. 12, 2018	Apr. 30, 2019	Apr. 30, 2018
Business Acquisition
Fair value of unvested equity awards attributable to pre-combination services			$ 225.9	$ 0.0
Demisto, Inc.
Business Acquisition
Cash	$ 250.0
Total consideration transferred	$ 474.2
RedLock, Inc.
Business Acquisition
Cash		$ 155.0
Fair value of unvested equity awards attributable to pre-combination services		3.2
Total consideration transferred		$ 158.2
Common stock \| Demisto, Inc.
Business Acquisition
Common stock issued (in shares)	0.9
Fair value of unvested equity awards attributable to pre-combination services	$ 214.7
Replacement equity awards \| Demisto, Inc.
Business Acquisition
Fair value of unvested equity awards attributable to pre-combination services	$ 9.5

Acquisitions (Purchase Price Allocation) (Details) - USD ($) $ in Millions	Apr. 30, 2019	Mar. 28, 2019	Oct. 12, 2018	Jul. 31, 2018
Business Acquisition
Goodwill	$ 1,027.3			$ 522.8
Demisto, Inc.
Business Acquisition
Goodwill		$ 387.8
Identified intangible assets		76.3
Cash		25.9
Net liabilities assumed		(15.8)
Total		$ 474.2
RedLock, Inc.
Business Acquisition
Goodwill			$ 113.6
Identified intangible assets			54.8
Net liabilities assumed			(10.2)
Total			$ 158.2

Acquisitions (Intangible assets acquired as part of business combination) (Details) - USD ($) $ in Millions	Mar. 28, 2019	Oct. 12, 2018
Demisto, Inc.
Finite-Lived Intangible Assets
Fair value of identified intangible assets acquired	$ 76.3
Demisto, Inc. \| Developed technology
Finite-Lived Intangible Assets
Fair value of identified intangible assets acquired	$ 56.6
Estimated useful life (in years)	6 years
Demisto, Inc. \| Customer relationships
Finite-Lived Intangible Assets
Fair value of identified intangible assets acquired	$ 19.7
Estimated useful life (in years)	6 years
RedLock, Inc.
Finite-Lived Intangible Assets
Fair value of identified intangible assets acquired		$ 54.8
RedLock, Inc. \| Developed technology
Finite-Lived Intangible Assets
Fair value of identified intangible assets acquired		$ 48.6
Estimated useful life (in years)		4 years
RedLock, Inc. \| Customer relationships
Finite-Lived Intangible Assets
Fair value of identified intangible assets acquired		$ 5.3
Estimated useful life (in years)		8 years
RedLock, Inc. \| Trade name and trademarks
Finite-Lived Intangible Assets
Fair value of identified intangible assets acquired		$ 0.9
Estimated useful life (in years)		6 months

Goodwill and Intangible Assets (Goodwill) (Details) $ in Millions	9 Months Ended
	Apr. 30, 2019 USD ($)
Goodwill Rollforward
Balance as of July 31, 2018	$ 522.8
Goodwill acquired	504.5
Balance as of April 30, 2019	$ 1,027.3

Goodwill and Intangible Assets (Purchased Intangible Assets by Major Class) (Details) - USD ($) $ in Millions	Apr. 30, 2019	Jul. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Total purchased intangible assets, gross carrying amount	$ 319.2	$ 187.3
Total purchased intangible assets, net carrying amount	234.2	140.8
Finite-Lived Intangible Assets
Gross carrying amount	317.6	186.5
Accumulated amortization	(85.0)	(46.5)
Net carrying amount	232.6	140.0
In-process research and development
Indefinite-lived Intangible Assets
In-process research and development	1.6	0.8
Developed technology
Finite-Lived Intangible Assets
Gross carrying amount	259.9	154.7
Accumulated amortization	(65.2)	(38.2)
Net carrying amount	194.7	116.5
Customer relationships
Finite-Lived Intangible Assets
Gross carrying amount	37.2	12.2
Accumulated amortization	(3.2)	(1.2)
Net carrying amount	34.0	11.0
Acquired intellectual property
Finite-Lived Intangible Assets
Gross carrying amount	8.9	8.9
Accumulated amortization	(5.0)	(4.5)
Net carrying amount	3.9	4.4
Trade name and trademarks
Finite-Lived Intangible Assets
Gross carrying amount	9.4	8.5
Accumulated amortization	(9.4)	(0.4)
Net carrying amount	0.0	8.1
Other
Finite-Lived Intangible Assets
Gross carrying amount	2.2	2.2
Accumulated amortization	(2.2)	(2.2)
Net carrying amount	$ 0.0	$ 0.0

Goodwill and Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 14.7	$ 3.8	$ 38.5	$ 9.2

Goodwill and Intangible Assets (Future Amortization Expense of Intangible Assets) (Details) - USD ($) $ in Millions	Apr. 30, 2019	Jul. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Remaining 2019	$ 14.3
2020	56.9
2021	54.9
2022	50.4
2023	24.5
2024 and thereafter	31.6
Net carrying amount	$ 232.6	$ 140.0

Deferred Contract Costs Deferred Contract Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018	Jul. 31, 2018
Deferred Contract Costs
Deferred contract costs, amortization period	5 years		5 years
Deferred contract costs	$ 377.6		$ 377.6		$ 338.0
Deferred contract costs, amortization expense	57.2	$ 37.7	147.6	$ 101.9
Short-term
Deferred Contract Costs
Deferred contract costs	125.8		125.8		113.2
Long-term
Deferred Contract Costs
Deferred contract costs	$ 251.8		$ 251.8		$ 224.8

Debt (Additional Details) (Details) $ / shares in Units, shares in Millions, $ in Millions	Apr. 30, 2019 USD ($)	Jul. 31, 2018 USD ($) shares day $ / shares	Jun. 30, 2014 USD ($) shares day $ / shares
Debt Instrument, Redemption
Aggregate principal amount outstanding	$ 1,852.4	$ 2,268.0
Level 2
Debt Instrument, Redemption
Fair value of convertible senior notes	2,300.0	2,700.0
2019 Notes
Debt Instrument, Redemption
Aggregate principal amount			$ 575.0
Contractual interest rate (in percentage)			0.00%
Initial conversion rate (in shares per $1,000 principal amount)			0.0090680
Initial conversion price (in usd per share) \| $ / shares			$ 110.28
Number of common stock convertible at initial conversion rate (in shares) \| shares			5.2
Threshold trading days (in days) \| day			20
Threshold consecutive trading days (in days) \| day			30
Threshold percentage of stock price trigger (in percentage)			130.00%
Threshold business days, per $1,000 principal (in days) \| day			5
Threshold consecutive trading days, per $1,000 principal (in days)			5 days
Threshold percentage of notes price trigger, per $1,000 principal (in percentage)			98.00%
Repurchase price as percentage of principal amount in event of change (in percentage)			100.00%
Aggregate principal amount outstanding	159.4	575.0
If-converted value in excess of principal	191.1
2023 Notes
Debt Instrument, Redemption
Aggregate principal amount		$ 1,700.0
Contractual interest rate (in percentage)		0.75%
Initial conversion rate (in shares per $1,000 principal amount)		0.0037545
Initial conversion price (in usd per share) \| $ / shares		$ 266.35
Number of common stock convertible at initial conversion rate (in shares) \| shares		6.4
Threshold trading days (in days) \| day		20
Threshold consecutive trading days (in days) \| day		30
Threshold percentage of stock price trigger (in percentage)		130.00%
Threshold business days, per $1,000 principal (in days) \| day		5
Threshold consecutive trading days, per $1,000 principal (in days)		5 days
Threshold percentage of notes price trigger, per $1,000 principal (in percentage)		98.00%
Repurchase price as percentage of principal amount in event of change (in percentage)		100.00%
Aggregate principal amount outstanding	$ 1,693.0	$ 1,693.0

Debt (2019 Notes conversions) (Details) - USD ($) shares in Millions, $ in Millions	9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Extinguishment of Debt
Loss on conversion of convertible senior notes	$ 2.6	$ 0.0
2019 Notes
Extinguishment of Debt
Repayments of convertible senior notes allocated to liability component	403.4
Repayments of convertible senior notes allocated to equity component	12.2
Repayments of convertible senior notes	415.6
Loss on conversion of convertible senior notes	$ 2.6
Shares of common stock issued in connection with conversion of convertible senior notes (in shares)	1.7

Debt (Components of Convertible Senior Notes) (Details) - USD ($) $ in Millions	Apr. 30, 2019	Jul. 31, 2018
Debt Instrument, Redemption
Principal	$ 1,852.4	$ 2,268.0
Less: debt discount and debt issuance costs, net of amortization	279.6	347.9
Net carrying amount	1,572.8	1,920.1
Equity component (including temporary equity)	345.4	424.8
2019 Notes
Debt Instrument, Redemption
Principal	159.4	575.0
Less: debt discount and debt issuance costs, net of amortization	1.3	24.6
Net carrying amount	158.1	550.4
Equity component (including temporary equity)	30.4	109.8
2023 Notes
Debt Instrument, Redemption
Principal	1,693.0	1,693.0
Less: debt discount and debt issuance costs, net of amortization	278.3	323.3
Net carrying amount	1,414.7	1,369.7
Equity component (including temporary equity)	$ 315.0	$ 315.0

Debt (Schedule of Interest Expense Recognized) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Debt Instrument, Redemption
Contractual interest expense	$ 3.3	$ 0.0	$ 9.6	$ 0.0
Amortization of debt discount	16.3	5.7	51.2	17.1
Amortization of debt issuance costs	0.8	0.8	2.4	2.1
Total interest expense recognized	20.4	6.5	63.2	19.2
2019 Notes
Debt Instrument, Redemption
Contractual interest expense	0.0	0.0	0.0	0.0
Amortization of debt discount	1.6	5.7	7.6	17.1
Amortization of debt issuance costs	0.3	0.8	1.0	2.1
Total interest expense recognized	$ 1.9	$ 6.5	$ 8.6	$ 19.2
Effective interest rate of the liability component (in percentage)	4.80%	4.80%	4.80%	4.80%
2023 Notes
Debt Instrument, Redemption
Contractual interest expense	$ 3.3	$ 0.0	$ 9.6	$ 0.0
Amortization of debt discount	14.7	0.0	43.6	0.0
Amortization of debt issuance costs	0.5	0.0	1.4	0.0
Total interest expense recognized	$ 18.5	$ 0.0	$ 54.6	$ 0.0
Effective interest rate of the liability component (in percentage)	5.20%	0.00%	5.20%	0.00%

Debt (Note Hedges) (Details) - USD ($) shares in Millions, $ in Millions			9 Months Ended
	Jul. 31, 2018	Jun. 30, 2014	Apr. 30, 2019
2019 Note Hedges
Schedule of Note Hedge Transactions
Shares of common stock covered by note hedges (in shares)		5.2
Aggregate amount paid to purchase note hedges - additional paid-in capital		$ 111.0
Common stock shares received from exercise of note hedges (in shares)			1.7
2023 Note Hedges
Schedule of Note Hedge Transactions
Shares of common stock covered by note hedges (in shares)	6.4
Aggregate amount paid to purchase note hedges - additional paid-in capital	$ 332.0

Debt (Warrants) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Jul. 31, 2018	Jun. 30, 2014
2019 Warrants
Class of Warrant or Right
Warrants sold, shares authorized to sell to counterparties (in shares)		5.2
Strike price of warrants (in usd per share)		$ 137.85
Proceeds from issuance of warrants		$ 78.3
2023 Warrants
Class of Warrant or Right
Warrants sold, shares authorized to sell to counterparties (in shares)	6.4
Strike price of warrants (in usd per share)	$ 417.80
Proceeds from issuance of warrants	$ 145.4

Debt (Revolving Credit Facility) (Details) - Revolving credit facility $ in Millions	Sep. 04, 2018 USD ($) day	Apr. 30, 2019 USD ($)
Line of Credit Facility
Current borrowing capacity	$ 400.0
Option for additional borrowing capacity	$ 350.0
Revolving credit facility amount outstanding		$ 0.0
Minimum maturity date term criteria
Line of Credit Facility
Number of days prior to maturity of 2023 Notes (in days) \| day	91
Minimum maturity date term, cash and cash equivalents balance criteria
Line of Credit Facility
Amount added to outstanding principal amount of 2023 Notes in minimum maturity date criteria	$ 400.0
Minimum
Line of Credit Facility
Commitment fee rate on undrawn amounts (in percentage)	0.125%
Maximum
Line of Credit Facility
Commitment fee rate on undrawn amounts (in percentage)	0.25%
Base rate \| Minimum
Line of Credit Facility
Spread on variable rate	0.00%
Base rate \| Maximum
Line of Credit Facility
Spread on variable rate	0.75%
LIBOR \| Minimum
Line of Credit Facility
Spread on variable rate	1.00%
LIBOR \| Maximum
Line of Credit Facility
Spread on variable rate	1.75%

Commitments and Contingencies (Lease Arrangements) (Details) $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017 USD ($)	Apr. 30, 2019 USD ($)	Oct. 31, 2017 USD ($)	Apr. 30, 2019 USD ($)	Apr. 30, 2018 USD ($)	Jul. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) lease_agreement	Oct. 31, 2015 USD ($) ft² lease_agreement	May 31, 2015 USD ($) ft² lease_agreement	Sep. 30, 2012 USD ($) ft² lease_renewal_option lease_agreement
Operating Leased Assets
Total payments under the lease agreements		$ 509.0		$ 509.0
Proceeds from sublease		11.2		11.2
Cease-use loss related to facility exit				4.1	$ 41.1
Q415 and Q116 New lease arrangements, new corporate headquarters
Operating Leased Assets
Number of lease agreements \| lease_agreement								3
Area of office space (in square feet) \| ft²								941,000
Increase in annual rental payments for fiscal 2018	$ 24.4
Increase in annual rental payments for fiscal 2019	11.8
Increase in annual rental payments for fiscal 2020	$ 2.0
Cash reimbursement from lessors			$ 38.2
Total payments under the lease agreements								$ 412.0
Q415 New lease arrangements, previous corporate headquarters
Operating Leased Assets
Number of lease agreements \| lease_agreement									1
Area of office space (in square feet) \| ft²									122,000
Total payments under the lease agreements									$ 23.1
Q218 New sublease arrangement, previous corporate headquarters
Operating Leased Assets
Number of lease agreements \| lease_agreement							1
Proceeds from sublease							$ 16.3
Q113 New lease arrangements, previous corporate headquarters
Operating Leased Assets
Number of lease agreements \| lease_agreement										2
Area of office space (in square feet) \| ft²										300,000
Total payments under the lease agreements										$ 94.3
Number of lease renewal options \| lease_renewal_option										2
Renewal term (in years)										5 years
Cease-use loss related to facility exit		4.1		4.1		$ 39.2
Liability release through rental payments		2.6		7.6
Cease-use liability		$ 25.6		$ 25.6		$ 29.1

Commitments and Contingencies (Lease Commitments) (Details) $ in Millions	Apr. 30, 2019 USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Remaining 2019	$ 17.8
2020	73.2
2021	67.2
2022	63.0
2023	60.1
2024 and thereafter	227.7
Committed gross lease payments	509.0
Less: proceeds from sublease rentals	11.2
Net operating lease obligation	$ 497.8

Commitments and Contingencies (Manufacturing Purchase Commitments) (Details) $ in Millions	Apr. 30, 2019 USD ($)
Manufacturing products and components
Unrecorded Unconditional Purchase Obligation
Manufacturing purchase commitments	$ 129.3

Commitments and Contingencies (Other Purchase Commitments) (Details) - Cloud services $ in Millions	Apr. 30, 2019 USD ($)
Unrecorded Unconditional Purchase Obligation
Remaining 2019	$ 0.0
2020	8.0
2021	27.3
2022	47.5
2023	57.5
2024 and thereafter	165.0
Total other purchase commitments	$ 305.3

Stockholders' Equity (Stockholders' Equity) (Details) - USD ($) shares in Millions, $ in Millions	9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Feb. 28, 2019	Dec. 31, 2018	Feb. 28, 2017	Aug. 31, 2016
Share Repurchase Programs
Repurchase and retirement of common stock	$ 330.0	$ 250.0
Share Repurchase Program A
Share Repurchase Programs
Share repurchase, authorized amount					$ 500.0	$ 500.0
Share repurchase, total authorized amount				$ 1,000.0
Repurchase and retirement of common stock (in shares)	1.9
Repurchase and retirement of common stock	$ 330.0
Share Repurchase Program B
Share Repurchase Programs
Share repurchase, authorized amount			$ 1,000.0
Share repurchase, total authorized amount			$ 1,000.0
Stock repurchase, remaining authorized repurchase amount	$ 1,000.0

Equity Award Plans (Stock Option Activities) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	9 Months Ended	12 Months Ended
	Apr. 30, 2019	Jul. 31, 2018
Stock options
Stock Options and PSOs, Outstanding Roll Forward
Balance, beginning (in shares)	1.0
Granted (in shares)	0.0
Exercised (in shares)	(0.6)
Forfeited (in shares)	0.0
Balance, ending (in shares)	0.4	1.0
Stock Options and PSOs, Outstanding, Weighted-Average Exercise Price Roll Forward
Balance, beginning (in usd per share)	$ 13.29
Granted (in usd per share)	0.00
Exercised (in usd per share)	13.07
Forfeited (in usd per share)	0.00
Balance, ending (in usd per share)	$ 13.54	$ 13.29
Options, Additional Disclosures
Weighted-average remaining contractual life (in years)	2 years 6 months	3 years 1 month
Aggregate intrinsic value	$ 122.7	$ 199.8
Options exercisable (in shares)	0.4
Options exercisable, weighted-average exercise price (in usd per share)	$ 13.54
Options exercisable, weighted-average remaining contractual term (in years)	2 years 6 months
Options exercisable, aggregate intrinsic value	$ 122.7
PSOs
Stock Options and PSOs, Outstanding Roll Forward
Balance, beginning (in shares)	1.2
Granted (in shares)	2.6
Exercised (in shares)	0.0
Forfeited (in shares)	0.0
Balance, ending (in shares)	3.8	1.2
Stock Options and PSOs, Outstanding, Weighted-Average Exercise Price Roll Forward
Balance, beginning (in usd per share)	$ 198.50
Granted (in usd per share)	191.97
Exercised (in usd per share)	0.00
Forfeited (in usd per share)	0.00
Balance, ending (in usd per share)	$ 193.98	$ 198.50
Options, Additional Disclosures
Weighted-average remaining contractual life (in years)	6 years 6 months	7 years
Aggregate intrinsic value	$ 206.9	$ 0.0
Options exercisable (in shares)	3.8
Options exercisable, weighted-average exercise price (in usd per share)	$ 193.98
Options exercisable, weighted-average remaining contractual term (in years)	6 years 6 months
Options exercisable, aggregate intrinsic value	$ 206.9
Fair value of awards granted	$ 154.5
PSOs \| Performance Period 1
Options, Additional Disclosures
Performance target stock price (in usd per share)	$ 297.75
Performance period (in years)	4 years
PSOs \| Performance Period 2
Options, Additional Disclosures
Performance target stock price (in usd per share)	$ 397.00
Performance period (in years)	5 years
PSOs \| Performance Period 3
Options, Additional Disclosures
Performance target stock price (in usd per share)	$ 496.25
Performance period (in years)	6 years
PSOs \| Performance Period 4
Options, Additional Disclosures
Performance target stock price (in usd per share)	$ 595.50
Performance period (in years)	7 years

Equity Award Plans (Fair Value Assumptions and Grant-Date Fair Values of PSOs) (Details) - PSOs	9 Months Ended
	Apr. 30, 2019 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award
Expected volatility rate, minimum (in percentage)	35.60%
Expected volatility rate, maximum (in percentage)	36.50%
Expected dividend rate (in percentage)	0.00%
Risk free interest rate, minimum (in percentage)	3.10%
Risk free interest rate, maximum (in percentage)	3.20%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Weighted-average grant-date fair value (in usd per share)	$ 56.44
Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Weighted-average grant-date fair value (in usd per share)	$ 59.64

Equity Award Plans (Restricted Stock Award (RSA), Performance-Based Stock Award (PSA), Restricted Stock Unit (RSU), and Performance-Based Stock Unit (PSU) Activities) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	9 Months Ended	12 Months Ended
	Apr. 30, 2019	Jul. 31, 2018
RSAs and PSAs
RSAs, PSAs, RSUs, and PSUs, Outstanding Roll Forward
Balance, beginning (in shares)	0.3
Granted (in shares)	0.0
Vested (in shares)	(0.2)
Forfeited (in shares)	0.0
Balance, ending (in shares)	0.1	0.3
RSAs, PSAs, RSUs, and PSUs, Outstanding, Weighted-Average Grant-Date Fair Value Per Share
Balance, beginning (in usd per share)	$ 160.85
Granted (in usd per share)	0.00
Vested (in usd per share)	166.07
Forfeited (in usd per share)	0.00
Balance, ending (in usd per share)	$ 148.54	$ 160.85
RSUs and PSUs
RSAs, PSAs, RSUs, and PSUs, Outstanding Roll Forward
Balance, beginning (in shares)	6.7
Granted (in shares)	3.0
Vested (in shares)	(2.1)
Forfeited (in shares)	(0.6)
Balance, ending (in shares)	7.0	6.7
RSAs, PSAs, RSUs, and PSUs, Outstanding, Weighted-Average Grant-Date Fair Value Per Share
Balance, beginning (in usd per share)	$ 160.20
Granted (in usd per share)	206.85
Vested (in usd per share)	156.83
Forfeited (in usd per share)	159.19
Balance, ending (in usd per share)	$ 181.14	$ 160.20
RSAs, PSAs, RSUs, and PSUs, Additional Disclosures
Weighted-average remaining contractual term (in years)	1 year 6 months	1 year 7 months
Aggregate intrinsic value	$ 1,738.8	$ 1,335.2
RSUs \| RedLock Plan and Demisto Plan
RSAs, PSAs, RSUs, and PSUs, Outstanding Roll Forward
Granted (in shares)	0.3
RSAs, PSAs, RSUs, and PSUs, Outstanding, Weighted-Average Grant-Date Fair Value Per Share
Granted (in usd per share)	$ 219.25
PSAs and PSUs
RSAs, PSAs, RSUs, and PSUs, Additional Disclosures
Award vesting period (in years)	4 years

Equity Award Plans (Allocation of Share-Based Compensation Expense) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Apr. 30, 2019	Oct. 31, 2018	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	$ 138.2		$ 123.7	$ 431.7	$ 380.2
Total compensation cost not yet recognized, unvested awards	1,400.0			$ 1,400.0
Compensation cost not yet recognized, period of recognition (in years)				2 years 10 months
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	45.1		35.4	$ 129.6	108.4
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	54.5		50.7	169.2	155.2
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	20.1		20.8	75.7	60.2
RedLock, Inc. \| General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation recognized for accelerated vesting of acquiree equity awards		$ 14.2
Product \| Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	1.3		1.7	4.3	5.5
Subscription and support \| Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	$ 17.2		$ 15.1	$ 52.9	$ 50.9

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Apr. 30, 2019	Oct. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Apr. 30, 2019	Apr. 30, 2018
Income Tax Disclosure [Abstract]
Effective income tax rate (in percentage)	4.30%		6.50%		(0.30%)	(5.70%)
Income tax benefit as a result of the Tax Cuts and Jobs Act of 2017				$ 5.8
Business Acquisition
Income tax expense (benefit)	$ (0.9)		$ (2.8)		$ 0.2	$ 7.0
Foreign Tax Authority [Member] \| Israel Tax Authority [Member]
Business Acquisition
Income tax expense (benefit)			(3.5)
RedLock, Inc.
Business Acquisition
Valuation allowance, increase (decrease), amount		$ (9.4)
Demisto, Inc.
Business Acquisition
Valuation allowance, increase (decrease), amount	$ (4.9)
Evident.io, Inc.
Business Acquisition
Valuation allowance, increase (decrease), amount			$ (4.6)

Net Loss Per Share (Computation of Basic and Diluted Net Loss Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Earnings Per Share [Abstract]
Net loss	$ (20.2)	$ (40.4)	$ (61.1)	$ (129.2)
Weighted-average shares used to compute net loss per share, basic and diluted	94.4	91.9	94.1	91.3
Net loss per share, basic and diluted (in usd per share)	$ (0.21)	$ (0.44)	$ (0.65)	$ (1.42)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Net Loss Per Share (Schedule of Antidilutive Securities Excluded from Computation) (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	30.8	18.2	30.8	18.2
Convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	7.8	5.2	7.8	5.2
Warrants related to the issuance of convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	11.6	5.2	11.6	5.2
RSUs and PSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	7.0	6.1	7.0	6.1
Options to purchase common stock, including PSOs
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	4.2	1.2	4.2	1.2
RSAs and PSAs
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	0.1	0.4	0.1	0.4
ESPP shares
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	0.1	0.1	0.1	0.1

Other Income, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Other Income, Net (Details) - USD ($) $ in Millions	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Other Income and Expenses [Abstract]
Interest income	$ 18.3	$ 6.7	$ 51.7	$ 17.7
Foreign currency exchange gains (losses), net	(0.1)	2.7	(1.3)	0.9
Other	0.0	(0.8)	(3.2)	(0.3)
Total other income, net	$ 18.2	$ 8.6	$ 47.2	$ 18.3

Related Party Transactions (Details) $ in Millions	Mar. 28, 2019 USD ($)
Demisto, Inc. \| Greylock Partners
Related Party Transaction
Consideration transferred	$ 85.6

Subsequent Events (Details) - Subsequent Event $ in Millions	1 Months Ended
	May 29, 2019 USD ($)
PureSec Ltd.
Subsequent Event
Total consideration	$ 47.0
Twistlock Ltd.
Subsequent Event
Total consideration	$ 410.0