NetApp (NTAP) 10-Q 29 Nov 17 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Oct. 27, 2017	Nov. 15, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 27, 2017
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	NTAP
Entity Registrant Name	NetApp, Inc.
Entity Central Index Key	1,002,047
Current Fiscal Year End Date	--04-27
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		266,791,791

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Current assets:
Cash and cash equivalents	$ 3,535	$ 2,444
Short-term investments	2,430	2,477
Accounts receivable	584	731
Inventories	108	163
Other current assets	363	383
Total current assets	7,020	6,198
Property and equipment, net	795	799
Goodwill	1,739	1,684
Other intangible assets, net	120	131
Other non-current assets	634	681
Total assets	10,308	9,493
Current liabilities:
Accounts payable	379	347
Accrued expenses	722	782
Commercial paper notes	718	500
Current portion of long-term debt	750	749
Short-term deferred revenue and financed unearned services revenue	1,645	1,744
Total current liabilities	4,214	4,122
Long-term debt	1,540	744
Other long-term liabilities	255	249
Long-term deferred revenue and financed unearned services revenue	1,522	1,598
Total liabilities	7,531	6,713
Commitments and contingencies (Note 16)	0	0
Stockholders' equity:
Common stock and additional paid-in capital, $0.001 par value; 267 and 269 shares issued and outstanding as of October 27, 2017 and April 28, 2017, respectively	2,779	2,769
Retained earnings	17	40
Accumulated other comprehensive loss	(19)	(29)
Total stockholders' equity	2,777	2,780
Total liabilities and stockholders' equity	$ 10,308	$ 9,493

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares shares in Millions	Oct. 27, 2017	Apr. 28, 2017
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares issued	267	269
Common stock, shares outstanding	267	269

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Revenues:
Product	$ 807	$ 710	$ 1,530	$ 1,370
Software maintenance	240	242	474	483
Hardware maintenance and other services	375	388	743	781
Net revenues	1,422	1,340	2,747	2,634
Cost of revenues:
Cost of product	399	376	770	735
Cost of software maintenance	6	7	13	15
Cost of hardware maintenance and other services	115	128	228	258
Total cost of revenues	520	511	1,011	1,008
Gross profit	902	829	1,736	1,626
Operating expenses:
Sales and marketing	420	418	845	847
Research and development	194	200	387	407
General and administrative	69	69	137	137
Total operating expenses	683	687	1,369	1,391
Income from operations	219	142	367	235
Other income (expense), net	6	0	11	(1)
Income before income taxes	225	142	378	234
Provision for income taxes	50	33	67	61
Net income	$ 175	$ 109	$ 311	$ 173
Net income per share:
Basic	$ 0.65	$ 0.39	$ 1.15	$ 0.62
Diluted	$ 0.64	$ 0.38	$ 1.12	$ 0.61
Shares used in net income per share calculations:
Basic	269	278	270	278
Diluted	275	284	277	283
Cash dividends declared per share	$ 0.20	$ 0.19	$ 0.40	$ 0.38

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 175	$ 109	$ 311	$ 173
Other comprehensive income (loss):
Foreign currency translation adjustments	(2)	(5)	8	(11)
Defined benefit obligations:
Reclassification adjustments related to defined benefit obligations	(1)	1	(1)	1
Income tax effect	1	0	1	0
Unrealized gains (losses) on available-for-sale securities:
Unrealized holding gains (losses) arising during the period	(4)	(5)	2	(2)
Unrealized gains (losses) on cash flow hedges:
Unrealized holding gains arising during the period	0	0	0	3
Reclassification adjustments for gains included in net income	0	(1)	0	(1)
Other comprehensive income (loss)	(6)	(10)	10	(10)
Comprehensive income	$ 169	$ 99	$ 321	$ 163

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016
Cash flows from operating activities:
Net income	$ 311	$ 173
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	102	117
Stock-based compensation	87	103
Deferred income taxes	44	28
Other items, net	(5)	(15)
Changes in assets and liabilities, net of acquisitions of businesses:
Accounts receivable	149	264
Inventories	55	1
Other operating assets	38	49
Accounts payable	34	(13)
Accrued expenses	(68)	(138)
Deferred revenue and financed unearned services revenue	(183)	(179)
Other operating liabilities	0	(4)
Net cash provided by operating activities	564	386
Cash flows from investing activities:
Purchases of investments	(609)	(795)
Maturities, sales and collections of investments	657	985
Purchases of property and equipment	(65)	(92)
Acquisitions of businesses, net of cash acquired	(75)	0
Other investing activities, net	5	(1)
Net cash provided by (used in) investing activities	(87)	97
Cash flows from financing activities:
Proceeds from issuance of common stock under employee stock award plans	57	61
Payments for taxes related to net share settlement of stock awards	(60)	(36)
Repurchase of common stock	(300)	(292)
Proceeds from issuance of commercial paper notes, net	218	0
Issuance of long-term debt, net	795	0
Repayment of short-term loan	0	(850)
Dividends paid	(108)	(105)
Other financing activities, net	(1)	(3)
Net cash provided by (used in) financing activities	601	(1,225)
Effect of exchange rate changes on cash and cash equivalents	13	(13)
Net increase (decrease) in cash and cash equivalents	1,091	(755)
Cash and cash equivalents:
Beginning of period	2,444	2,868
End of period	$ 3,535	$ 2,113

Description of Business and Sig

Description of Business and Significant Accounting Policies	6 Months Ended
	Oct. 27, 2017
Accounting Policies [Abstract]
Description of Business and Significant Accounting Policies	1. Description of Business and Significant Accounting Policies NetApp, Inc. (we, us, or the Company) provides global organizations the ability to manage and share their data across on-premises, private and public clouds. Together with our partners, we provide a full range of enterprise-class software, systems and services solutions that customers use to modernize their infrastructures, build next generation data centers and harness the power of hybrid clouds. Basis of Presentation and Preparation Our fiscal year is reported on a 52- or 53-week year ending on the last Friday in April. An additional week is included in the first fiscal quarter approximately every six years to realign fiscal months with calendar months. Fiscal years 2018 and 2017, ending on April 27, 2018, and April 28, 2017, respectively, are each 52-week years, with 13 weeks in each of their quarters. The accompanying unaudited condensed consolidated financial statements have been prepared by the Company, and reflect all adjustments, consisting only of normal recurring adjustments, that are, in the opinion of management, necessary for the fair presentation of our financial position, results of operations, comprehensive income and cash flows for the interim periods presented. The statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information. Accordingly, these statements do not include all information and footnotes required by GAAP for annual consolidated financial statements, and should be read in conjunction with our audited consolidated financial statements as of and for the fiscal year ended April 28, 2017 contained in our Annual Report on Form 10-K. The results of operations for the three and six months ended October 27, 2017 are not necessarily indicative of the operating results to be expected for the full fiscal year or future operating periods. The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Such estimates include, but are not limited to, revenue recognition, reserves and allowances; inventory valuation and purchase order accruals; valuation of goodwill and intangibles; restructuring reserves; product warranties; employee compensation and benefit accruals; stock-based compensation; loss contingencies; valuation of investment securities; income taxes and fair value measurements. Actual results could differ materially from those estimates. There have been no significant changes in our significant accounting policies as of and for the six months ended October 27, 2017, as compared to the significant accounting policies described in our Annual Report on Form 10-K for the fiscal year ended April 28, 2017.

Recent Accounting Standards Not

Recent Accounting Standards Not Yet Effective	6 Months Ended
	Oct. 27, 2017
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Recent Accounting Standards Not Yet Effective	2. Recent Accounting Standards Not Yet Effective Revenue from Contracts with Customers In May 2014, the FASB issued an accounting standards update related to the recognition and reporting of revenue that establishes a comprehensive new revenue recognition model designed to depict the transfer of goods or services to a customer in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. The guidance allows for the use of either the full or modified retrospective transition method. We expect to adopt this new standard, as amended, on its effective date in the first quarter of fiscal 2019. Preliminarily, we plan to adopt the standard using the full retrospective method to restate each prior reporting period presented. Our ability to adopt this standard using the full retrospective method is dependent upon system readiness, for both revenue and commissions, and the completion of the analysis of information necessary to restate prior period financial statements and disclosures. We are continuing to assess the impact of this standard on our financial position, results of operations and related disclosures and have not yet determined whether the effect will be material. We do not expect that the adoption of this standard will have a material impact on our operating cash flows. Additionally, as we continue to assess the new standard along with industry trends and additional interpretive guidance, we may adjust our implementation plan accordingly. We believe that the new standard will impact our following policies and disclosures: • in arrangements containing software, revenue deferred for the undelivered elements will be based on a relative fair value allocation, generally resulting in more software arrangement revenue being recognized earlier; • removal of the current limitation on contingent revenue for multiple element arrangements, such as that related to the delivery of additional items or meeting other specified performance conditions, may result in revenue being recognized earlier; • estimation of variable consideration for arrangements with contract terms such as rights of return, potential penalties and acceptance clauses; • required disclosures, including information about the transaction price allocated to remaining performance obligations and expected timing of revenue recognition; and • accounting for deferred commissions, including costs that qualify for deferral and the amortization period. We do not expect that the new standard will result in substantive changes in our deliverables or the amounts of revenue allocated between multiple deliverables, with the exception of the items discussed above. Leases In February 2016, the FASB issued an accounting standards update on financial reporting for leasing arrangements, including requiring lessees to recognize an operating lease with a term greater than one year on their balance sheets as a right-of-use asset and corresponding lease liability, measured at the present value of the lease payments. This new standard will be effective for us in our first quarter of fiscal 2020, although early adoption is permitted. Upon adoption, lessees must apply a modified retrospective transition approach for leases existing at, or Credit Losses on Financial Instruments In June 2016, the FASB issued an accounting standards update on the measurement of credit losses on financial instruments. The standard introduces a new model for measuring and recognizing credit losses on financial instruments, requiring financial assets measured at amortized cost basis to be presented at the net amount expected to be collected. Income Taxes on Intra-Entity Transfers of Assets In October 2016, the FASB issued an accounting standards update that requires entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. This amends current GAAP which prohibits recognition of current and deferred income taxes for all types of intra-entity asset transfers until the asset has been sold to an outside party. This new standard will be effective for us in our first quarter of fiscal 2019, although early adoption is permitted. Upon adoption, companies must apply a modified retrospective transition approach through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. We are currently evaluating the impact of this new standard on our consolidated financial statements. Derecognition of Non-Financial Assets In February 2017, the FASB issued an accounting standards update that amends guidance on how entities account for the derecognition of a nonfinancial asset or an in substance nonfinancial asset that is not a business. The guidance allows for the use of either the full or modified retrospective transition method. This new standard will be effective for us in our first quarter of fiscal 2019, although early adoption is permitted. We are currently evaluating the impact of this new standard on our consolidated financial statements. Although there are several other new accounting pronouncements issued or proposed by the FASB that we have adopted or will adopt, as applicable, we do not believe any of these accounting pronouncements has had or will have a material impact on our consolidated financial position, operating results or disclosures.

Statements of Cash Flows Additi

Statements of Cash Flows Additional Information	6 Months Ended
	Oct. 27, 2017
Supplemental Cash Flow Elements [Abstract]
Statements of Cash Flows Additional Information	3. Statements of Cash Flows Additional Information Non-cash investing activities and supplemental cash flow information are as follows (in millions): Six Months Ended October 27, 2017 October 28, 2016 Non-cash Investing Activities: Capital expenditures incurred but not paid $ 17 $ 35 Supplemental Cash Flow Information: Income taxes paid, net of refunds $ 28 $ 70 Interest paid $ 24 $ 23

Business Combinations

Business Combinations	6 Months Ended
	Oct. 27, 2017
Business Combinations [Abstract]
Business Combinations	4. Business Combinations On August 4, 2017, we acquired all of the outstanding shares of Greenqloud ehf., a privately-held provider of cloud management software based in Iceland, for $51 million in cash, of which we preliminarily allocated $10 million to developed technology, $38 million to goodwill, and the remainder to other assets. On June 15, 2017, we acquired all of the outstanding shares of Plexistor Ltd., a privately-held provider of software defined memory architecture based in Israel, for $24 million in cash, of which we allocated $6 million to developed technology, $17 million to goodwill, and the remainder to other assets.

Goodwill and Purchased Intangib

Goodwill and Purchased Intangible Assets, Net	6 Months Ended
	Oct. 27, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Purchased Intangible Assets, Net	5. Goodwill and Purchased Intangible Assets, Net Goodwill activity is summarized as follows (in millions): Balance as of April 28, 2017 $ 1,684 Additions 55 Balance as of October 27, 2017 $ 1,739 Purchased intangible assets, net are summarized below (in millions): October 27, 2017 April 28, 2017 Gross Accumulated Net Gross Accumulated Net Assets Amortization Assets Assets Amortization Assets Developed technology $ 164 $ (61 ) $ 103 $ 148 $ (44 ) $ 104 Customer contracts/relationships 43 (27 ) 16 43 (19 ) 24 Other purchased intangibles 9 (8 ) 1 9 (6 ) 3 Total purchased intangible assets $ 216 $ (96 ) $ 120 $ 200 $ (69 ) $ 131 Amortization expense for purchased intangible assets is summarized below (in millions): Three Months Ended Six Months Ended Statements of October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Operations Classification Developed technology $ 9 $ 7 $ 17 $ 13 Cost of revenues Customer contracts/relationships 4 3 8 7 Operating expenses Other purchased intangibles 1 1 2 2 Operating expenses Total $ 14 $ 11 $ 27 $ 22 As of October 27, 2017, future amortization expense related to purchased intangible assets is as follows (in millions): Fiscal Year Amount Remainder of 2018 $ 26 2019 47 2020 31 2021 16 Total $ 120

Balance Sheet Details

Balance Sheet Details	6 Months Ended
	Oct. 27, 2017
Statement Of Financial Position [Abstract]
Balance Sheet Details	6. Balance Sheet Details Cash and cash equivalents (in millions): October 27, 2017 April 28, 2017 Cash $ 3,111 $ 2,275 Cash equivalents 424 169 Cash and cash equivalents $ 3,535 $ 2,444 Inventories (in millions): October 27, 2017 April 28, 2017 Purchased components $ 32 $ 28 Finished goods 76 135 Inventories $ 108 $ 163 Property and equipment, net (in millions): October 27, 2017 April 28, 2017 Land $ 132 $ 132 Buildings and improvements 633 612 Leasehold improvements 100 93 Computer, production, engineering and other equipment 749 741 Computer software 352 353 Furniture and fixtures 96 90 Construction-in-progress 13 26 2,075 2,047 Accumulated depreciation and amortization (1,280 ) (1,248 ) Property and equipment, net $ 795 $ 799 We have classified certain land and buildings located in Sunnyvale, California previously reported as property and equipment as assets held-for-sale. The book value of these assets is $118 million and is included in other current assets in the condensed consolidated balance sheets. On September 8, 2017, we entered into an agreement to sell these assets for a total of $306 million, of which $210 million is payable at the first closing and $96 million is payable at the second closing. Each closing is subject to due diligence, certain termination rights and customary closing conditions, including, in the case of the second closing, local governmental approval of the subdivision of a land parcel. The first closing is expected to occur in the third quarter of fiscal 2018 and the second closing is expected to occur within the next twelve months. Other non-current assets (in millions): October 27, 2017 April 28, 2017 Deferred tax assets $ 483 $ 525 Other assets 151 156 Other non-current assets $ 634 $ 681 Accrued expenses (in millions): October 27, 2017 April 28, 2017 Accrued compensation and benefits $ 291 $ 340 Sale-leaseback financing obligations 130 130 Product warranty liabilities 29 33 Other current liabilities 272 279 Accrued expenses $ 722 $ 782 Product warranty liabilities: Equipment and software systems sales include a standard product warranty. The following tables summarize the activity related to product warranty liabilities and their balances as reported in our condensed consolidated balance sheets (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Balance at beginning of period $ 44 $ 61 $ 50 $ 70 Expense accrued during the period 7 1 8 5 Warranty costs incurred (7 ) (8 ) (14 ) (21 ) Balance at end of period $ 44 $ 54 $ 44 $ 54 October 27, 2017 April 28, 2017 Accrued expenses $ 29 $ 33 Other long-term liabilities 15 17 Total warranty liabilities $ 44 $ 50 Warranty expense accrued during the period includes amounts accrued for systems at the time of shipment, adjustments for changes in estimated costs for warranties on systems shipped in the period and changes in estimated costs for warranties on systems shipped in prior periods. Deferred revenue and financed unearned services revenue (in millions): October 27, 2017 April 28, 2017 Deferred product revenue $ 123 $ 124 Deferred services revenue 2,881 2,999 Financed unearned services revenue 163 219 Total $ 3,167 $ 3,342 Reported as: Short-term $ 1,645 $ 1,744 Long-term 1,522 1,598 Total $ 3,167 $ 3,342 Deferred product revenue represents unrecognized revenue related to undelivered product commitments and other product deliveries that have not met all revenue recognition criteria. Deferred services revenue represents customer payments made in advance for services, which include software and hardware maintenance contracts and other services. Financed unearned services revenue represents undelivered services for which cash has been received under certain third-party financing arrangements. See Note 16 for additional information related to these arrangements.

Other Income (Expense), Net

Other Income (Expense), Net	6 Months Ended
	Oct. 27, 2017
Nonoperating Income Expense [Abstract]
Other Income (Expense), Net	7. Other income (expense), net Other income (expense), net consists of the following (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Interest income $ 19 $ 10 $ 35 $ 21 Interest expense (17 ) (12 ) (30 ) (27 ) Other income, net 4 2 6 5 Total other income (expense), net $ 6 $ — $ 11 $ (1 )

Financial Instruments and Fair

Financial Instruments and Fair Value Measurements	6 Months Ended
	Oct. 27, 2017
Investments Debt And Equity Securities [Abstract]
Financial Instruments and Fair Value Measurements	8. Financial Instruments and Fair Value Measurements The accounting guidance for fair value measurements provides a framework for measuring fair value on either a recurring or nonrecurring basis, whereby the inputs used in valuation techniques are assigned a hierarchical level. The following are the three levels of inputs to measure fair value: Level 1: Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2: Inputs that reflect quoted prices for identical assets or liabilities in less active markets; quoted prices for similar assets or liabilities in active markets; benchmark yields, reported trades, broker/dealer quotes, inputs other than quoted prices that are observable for the assets or liabilities; or inputs that are derived principally from or corroborated by observable market data by correlation or other means. Level 3: Unobservable inputs that reflect our own assumptions incorporated in valuation techniques used to measure fair value. These assumptions are required to be consistent with market participant assumptions that are reasonably available. We consider an active market to be one in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis, and consider an inactive market to be one in which there are infrequent or few transactions for the asset or liability, the prices are not current, or price quotations vary substantially either over time or among market makers. Where appropriate, our own or the counterparty’s non-performance risk is considered in measuring the fair values of liabilities and assets, respectively. Investments The following is a summary of our investments (in millions): October 27, 2017 April 28, 2017 Cost or Estimated Cost or Estimated Amortized Gross Unrealized Fair Amortized Gross Unrealized Fair Cost Gains Losses Value Cost Gains Losses Value Corporate bonds $ 1,747 $ 6 $ (3 ) $ 1,750 $ 1,535 $ 3 $ (2 ) $ 1,536 U.S. Treasury and government debt securities 474 — (2 ) 472 629 1 (2 ) 628 Foreign government debt securities 21 — — 21 21 — — 21 Commercial paper 504 — — 504 362 — — 362 Certificates of deposit 107 — — 107 99 — — 99 Mutual funds 34 — — 34 31 — — 31 Total debt and equity securities $ 2,887 $ 6 $ (5 ) $ 2,888 $ 2,677 $ 4 $ (4 ) $ 2,677 As of October 27, 2017 and April 28, 2017, gross unrealized losses related to individual securities were not significant. The following table presents the contractual maturities of our debt investments as of October 27, 2017 (in millions): Amortized Cost Fair Value Due in one year or less $ 1,242 $ 1,242 Due after one year through five years 1,187 1,186 Due after five years through ten years 419 421 Due after ten years 5 5 $ 2,853 $ 2,854 Actual maturities may differ from the contractual maturities because borrowers may have the right to call or prepay certain obligations. Fair Value of Financial Instruments The following table summarizes our financial assets and liabilities measured at fair value on a recurring basis (in millions): October 27, 2017 Fair Value Measurements at Reporting Date Using Total Level 1 Level 2 Cash $ 3,111 $ 3,111 $ — Corporate bonds 1,750 — 1,750 U.S. Treasury and government debt securities 472 191 281 Foreign government debt securities 21 — 21 Commercial paper 504 — 504 Certificates of deposit 107 — 107 Total cash, cash equivalents and short-term investments $ 5,965 $ 3,302 $ 2,663 Other items: Mutual funds (1) $ 7 $ 7 $ — Mutual funds (2) $ 27 $ 27 $ — Foreign currency exchange contracts assets (1) $ 8 $ — $ 8 Foreign currency exchange contracts liabilities (3) $ (4 ) $ — $ (4 ) (1) Reported as other current assets in the condensed consolidated balance sheets (2) Reported as other non-current assets in the condensed consolidated balance sheets (3) Reported as accrued expenses in the condensed consolidated balance sheets Our Level 2 debt instruments are held by a custodian who prices some of the investments using standard inputs in various asset price models or obtains investment prices from third-party pricing providers that incorporate standard inputs in various asset price models. These pricing providers utilize the most recent observable market information in pricing these securities or, if specific prices are not available for these securities, use other observable inputs like market transactions involving identical or comparable securities. We review Level 2 inputs and fair value for reasonableness and the values may be further validated by comparison to multiple independent pricing sources. In addition, we review third-party pricing provider models, key inputs and assumptions and understand the pricing processes at our third-party providers in determining the overall reasonableness of the fair value of our Level 2 debt instruments. As of October 27, 2017 and April 28, 2017, we have not made any adjustments to the prices obtained from our third-party pricing providers. Fair Value of Debt As of October 27, 2017 and April 28, 2017, the fair value of our long-term debt was approximately $2,316 million and $1,520 million, respectively. The fair value of our long-term debt was based on observable market prices in a less active market. The fair value of our commercial paper notes approximated their carrying value. All of our debt obligations are categorized as Level 2 instruments.

Financing Arrangements

Financing Arrangements	6 Months Ended
	Oct. 27, 2017
Debt Disclosure [Abstract]
Financing Arrangements	9. Financing Arrangements Long-Term Debt The following table summarizes information relating to our long-term debt, which we collectively refer to as our Senior Notes (in millions, except interest rates): October 27, 2017 April 28, 2017 Effective Effective Amount Interest Rate Amount Interest Rate 2.00% Senior Notes Due December 2017 $ 750 2.25 % $ 750 2.25 % 2.00% Senior Notes Due September 2019 400 2.32 % — N/A 3.375% Senior Notes Due June 2021 500 3.54 % 500 3.54 % 3.25% Senior Notes Due December 2022 250 3.43 % 250 3.43 % 3.30% Senior Notes Due September 2024 400 3.42 % — N/A Total principal amount 2,300 1,500 Unamortized discount and issuance costs (10 ) (7 ) Total senior notes 2,290 1,493 Less: Current portion of long-term debt (750 ) (749 ) Total long-term debt $ 1,540 $ 744 __________________ N/A - Not applicable Senior Notes In September 2017, we issued $400 million aggregate principal amount of 2.00% Senior Notes due on September 27, 2019 and $400 million aggregate principal amount of 3.30% Senior Notes due on September 29, 2024. We received total proceeds of approximately $795 million, net of discount and issuance costs, which will be used for general corporate purposes, including the repayment of our outstanding 2.00% Senior Notes due December 2017. Interest on these Senior Notes is payable semi-annually in March and September. Our 3.375% Senior Notes, 2.00% Senior Notes due December 2017 and 3.25% Senior Notes, with principal amounts of $500 million, $750 million and $250 million, respectively, were issued in June 2014, December 2012 and December 2012, respectively. Interest on these Senior Notes is paid semi-annually in June and December. Our Senior Notes, which are unsecured, unsubordinated obligations, rank equally in right of payment with any existing and future senior unsecured indebtedness. We may redeem the Senior Notes in whole or in part, at any time at our option at specified redemption prices. In addition, upon the occurrence of certain change of control triggering events, we may be required to repurchase the Senior Notes under specified terms. The Senior Notes also include covenants that limit our ability to incur debt secured by liens on assets or on shares of stock or indebtedness of our subsidiaries; to engage in certain sale and lease-back transactions; and to consolidate, merge or sell all or substantially all of our assets. As of October 27, 2017, we were in compliance with all covenants associated with the Senior Notes. On October 4, 2017, we issued a notice to redeem all our 2.00% Senior Notes due December 2017. On November 3, 2017, the notes were extinguished through redemption for cash at an aggregate redemption price of $751 million, plus accrued and unpaid interest. As of October 27, 2017, our aggregate future principal debt maturities, including the 2.00% Senior Notes due December 2017, are as follows (in millions): Fiscal Year Amount Remainder of 2018 $ 750 2020 400 2022 500 Thereafter 650 Total $ 2,300 Commercial Paper Program and Credit Facility We have a commercial paper program (the Program), under which we may issue unsecured commercial paper notes. Amounts available under the Program, as amended on July 17, 2017, may be borrowed, repaid and re-borrowed, with the aggregate face or principal amount of the notes outstanding under the Program at any time not to exceed $1.0 billion. The proceeds from the issuance of the notes are used for general corporate purposes. As of October 27, 2017, we had commercial paper notes outstanding with an aggregate principal amount of $719 million, a weighted-average interest rate of 1.43% and maturities ranging from 13 days to 44 days. In connection with the Program, we have a senior unsecured credit agreement with a syndicated group of lenders that expires on December 10, 2021. The credit agreement, as amended on July 17, 2017, provides a $1.0 billion revolving unsecured credit facility, with a $50 million letter of credit sub-facility, that serves as a back-up for the Program. Proceeds from the facility may also be used for general corporate purposes to the extent that the credit facility exceeds the outstanding debt issued under the Program . The credit agreement includes options that allow us to request an increase in the facility of up to an additional $300 million and to extend its maturity date for two additional one-year periods, both subject to certain conditions. As of October 27, 2017 we were in compliance with all associated covenants in this agreement. No amounts were drawn against this facility during any of the periods presented. Sale-leaseback Transactions In fiscal 2016, we entered into a sale-leaseback arrangement of certain of our land and buildings, under which we leased back certain of our properties rent free over lease terms ending at various dates ranging from March 31, 2017 to December 31, 2017, unless terminated early by us. Due to the existence of a prohibited form of continuing involvement, these properties did not qualify for sale-leaseback accounting and as a result they have been accounted for as financing transactions under lease accounting standards. Under the financing method, until such time as the related leases are terminated, the assets will remain on our condensed consolidated balance sheets and proceeds received by us from these transactions are reported as financing obligations. As of October 27, 2017, the balance of the remaining financing obligations, which relate to properties whose leases we expect to terminate in December 2017, was $130 million. At the end of the leaseback period, or when our continuing involvement under the leaseback agreement ends, this transaction will be reported as a non-cash sale and extinguishment of financing obligations, and the difference between the then net book value of the properties and the unamortized balance of the financing obligations will be recognized as a gain.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Oct. 27, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stockholders' Equity	10. Stockholders’ Equity Equity Incentive Awards As of October 27, 2017, we have certain equity incentive awards (awards) outstanding, which include stock options, restricted stock units (RSUs), including time-based RSUs and performance-based RSUs (PBRSUs), and Employee Stock Purchase Plan (ESPP) awards. Stock Options The following table summarizes information related to our stock options (in millions, except exercise price and contractual term): Number of Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding as of April 28, 2017 4 $ 35.76 Exercised (1 ) $ 24.14 Outstanding as of October 27, 2017 3 $ 37.30 2.77 $ 29 Exercisable as of October 27, 2017 3 $ 40.97 2.14 $ 16 The aggregate intrinsic value represents the pre-tax difference between the exercise price of stock options and the quoted market price of our stock on that day for all in-the-money options. Additional information related to our stock options is summarized below (in millions): Six Months Ended October 27, 2017 October 28, 2016 Intrinsic value of exercises $ 11 $ 11 Proceeds received from exercises $ 15 $ 20 Fair value of options vested $ 5 $ 9 Restricted Stock Units In the six months ended October 27, 2017, The following table summarizes information related to our RSUs, including PBRSUs, (in millions, except fair value): Number of Shares Weighted- Average Grant Date Fair Value Outstanding as of April 28, 2017 11 $ 28.81 Granted 4 $ 38.61 Vested (4 ) $ 31.29 Forfeited (1 ) $ 28.30 Outstanding as of October 27, 2017 10 $ 31.73 We primarily use the net share settlement approach upon vesting, where a portion of the shares are withheld as settlement of employee withholding taxes, which decreases the shares issued to the employee by a corresponding value. The number and value of the shares netted for employee taxes are summarized in the table below (in millions): Six Months Ended October 27, 2017 October 28, 2016 Shares withheld for taxes 2 1 Fair value of shares withheld $ 60 $ 36 Employee Stock Purchase Plan The following table summarizes activity related to the purchase rights issued under the ESPP (in millions): Six Months Ended October 27, 2017 October 28, 2016 Shares issued under the ESPP 2 2 Proceeds from issuance of shares $ 42 $ 42 Stock-Based Compensation Expense Stock-based compensation expense is included in the condensed consolidated statements of operations as follows (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Cost of product revenues $ 1 $ 1 $ 2 $ 2 Cost of hardware maintenance and other services revenues 2 3 5 7 Sales and marketing 16 21 37 44 Research and development 12 17 27 32 General and administrative 8 9 16 18 Total stock-based compensation expense $ 39 $ 51 $ 87 $ 103 Income tax benefit for stock-based compensation $ 9 $ 11 $ 18 $ 20 As of October 27, 2017, total unrecognized compensation expense related to our equity awards was $269 million, which is expected to be recognized on a straight-line basis over a weighted-average remaining service period of 2.3 years. Stock Repurchase Program Our Board of Directors has authorized the repurchase of up to $9.6 billion of our common stock. Under this program, which we may suspend or discontinue at any time, we may purchase shares of our outstanding common stock through open market and privately negotiated transactions at prices deemed appropriate by our management. The following table summarizes activity related to this program for the six months ended October 27, 2017 (in millions, except per share amounts): Number of shares repurchased 7 Average price per share $ 41.80 Aggregate purchase price $ 300 Remaining authorization at end of period $ 494 The aggregate purchase price of our stock repurchases for the six months ended October 27, 2017 consisted of $300 million of open market purchases, of which $74 million and $226 million were allocated to additional paid-in capital and retained earnings, respectively. Since the May 13, 2003 inception of our stock repurchase program through October 27, 2017, we repurchased a total of 276 million shares of our common stock at an average price of $33.07 per share, for an aggregate purchase price of $9.1 billion. Dividends The following is a summary of our activities related to dividends on our common stock (in millions, except per share amounts): Six Months Ended October 27, 2017 October 28, 2016 Dividends per share declared $ 0.40 $ 0.38 Dividend payments allocated to additional paid-in capital $ — $ 76 Dividend payments allocated to retained earnings $ 108 $ 29 On November 15, 2017, we declared a cash dividend of $0.20 per share of common stock, payable on January 24, 2018 to holders of record as of the close of business on January 5, 2018. The timing and amount of future dividends will depend on market conditions, corporate business and financial considerations and regulatory requirements. All dividends declared have been determined by us to be legally authorized under the laws of the state in which we are incorporated. Retained Earnings A reconciliation of retained earnings is as follows (in millions): Balance as of April 28, 2017 $ 40 Net income 311 Repurchases of common stock (226 ) Dividends (108 ) Balance as of October 27, 2017 $ 17 Accumulated Other Comprehensive Income (Loss) Changes in accumulated other comprehensive income (loss) by component, net of tax, are summarized below (in millions): Foreign Currency Translation Adjustments Unrealized Gains (Losses) on Available- for-Sale Securities Total Balance as of April 28, 2017 $ (29 ) $ — $ (29 ) Other comprehensive income, net of tax 8 2 10 Balance as of October 27, 2017 $ (21 ) $ 2 $ (19 ) The amounts reclassified out of accumulated other comprehensive income (loss) are as follows (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Amounts Reclassified from AOCI Amounts Reclassified from AOCI Statements of Operations Classification Recognized (gains) losses on defined benefit obligations $ (1 ) $ 1 $ (1 ) $ 1 Operating expenses Realized gains on cash flow hedges — (1 ) — (1 ) Net revenues Total reclassifications $ (1 ) $ — $ (1 ) $ —

Derivatives and Hedging Activit

Derivatives and Hedging Activities	6 Months Ended
	Oct. 27, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	11. Derivatives and Hedging Activities We use derivative instruments to manage exposures to foreign currency risk. Our primary objective in holding derivatives is to reduce the volatility of earnings and cash flows associated with changes in foreign currency exchange rates. The maximum length of time over which forecasted foreign currency denominated revenues are hedged is six months. The program is not designated for trading or speculative purposes. Our derivatives expose us to credit risk to the extent that the counterparties may be unable to meet the terms of the agreement. We seek to mitigate such risk by limiting our counterparties to major financial institutions. In addition, the potential risk of loss with any one counterparty resulting from this type of credit risk is monitored on an ongoing basis. We also have in place master netting arrangements to mitigate the credit risk of our counterparties and to potentially reduce our losses due to counterparty nonperformance. We present our derivative instruments as net amounts in our condensed consolidated balance sheets. The gross and net fair value amounts of such instruments were not material as of October 27, 2017 or April 28, 2017. We did not recognize any gains or losses in earnings due to hedge ineffectiveness for any period presented. All contracts have a maturity of less than six months. The notional amount of our outstanding U.S. dollar equivalent foreign currency exchange forward contracts consisted of the following (in millions): October 27, 2017 April 28, 2017 Balance Sheet Contracts Forward contracts sold $ 136 $ 165 Forward contracts purchased $ 248 $ 257 As of October 27, 2017 and April 28, 2017, there were no instruments designated as cash flow hedges outstanding. The effect of cash flow hedges recognized in net revenues is presented in the condensed consolidated statements of comprehensive income and in Note 10 – Stockholders’ Equity. The effect of derivative instruments not designated as hedging instruments recognized in other income (expense), net on our condensed consolidated statements of operations was as follows (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Gain Recognized into Income Gain (Loss) Recognized into Income Foreign currency exchange contracts $ 1 $ 2 $ (1 ) $ 6

Restructuring Charges

Restructuring Charges	6 Months Ended
	Oct. 27, 2017
Restructuring And Related Activities [Abstract]
Restructuring Charges	12. Restructuring Charges Management has previously approved several restructuring actions to streamline our business, eliminate costs and redirect resources to our highest return activities, including the March 2016 Plan and the November 2016 Plan, under which we reduced our global workforce by approximately 11%, and 6%, respectively. We completed all workforce related activities under these plans as of the end of fiscal 2017. Charges related to our restructuring plans consisted primarily of employee severance-related costs. The remaining balance as of October 27, 2017 principally relates to lease obligations and will be paid over their remaining terms. Activities related to our restructuring plans are summarized as follows (in millions): Six Months Ended Six Months Ended October 27, 2017 October 28, 2016 November 2016 Plan March 2016 Plan Balance at beginning of period $ 13 $ 45 Cash payments (5 ) (42 ) Balance at end of period $ 8 $ 3

Income Taxes

Income Taxes	6 Months Ended
	Oct. 27, 2017
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes Our effective tax rates for the periods presented were as follows: Six Months Ended October 27, 2017 October 28, 2016 Effective tax rates 17.7 % 26.1 % Our effective tax rates reflect the impact of a significant amount of our earnings, primarily income from our European operations which are headquartered in the Netherlands, being taxed in foreign jurisdictions at rates below the U.S. statutory tax rate. The differences in effective tax rates for the six months ended October 27, 2017 and October 28, 2016 were primarily a result of differences in discrete impacts related to stock-based compensation and differences in year-to-date profits before tax. As of October 27, 2017, we had $222 million of gross unrecognized tax benefits, of which $157 million has been recorded in other long-term liabilities. Unrecognized tax benefits of $163 million, including penalties, interest and indirect benefits, would affect our provision for income taxes if recognized. We are currently undergoing federal income tax audits in the United States (U.S.) and several foreign tax jurisdictions. Transfer pricing calculations are key issues under audits in various jurisdictions, and are often subject to dispute and appeals. The IRS has concluded the examination of our tax returns for our fiscal years through 2010. The IRS commenced the examination of our federal income tax returns for our fiscal years 2012 and 2013 in August 2016. On September 17, 2010, the Danish Tax Authorities issued a decision concluding that distributions declared in 2005 and 2006 from our Danish subsidiary were subject to Danish at-source dividend withholding tax. We do not believe that our Danish subsidiary is liable for withholding tax and filed an appeal with the Danish Tax Tribunal to that effect. On December 19, 2011, the Danish Tax Tribunal issued a ruling that our Danish subsidiary was not liable for Danish withholding tax. The Danish tax examination agency appealed to the Danish High Court in March 2012. In February 2016, the Danish High Court referred the case to the Court of Justice of the European Union where it was heard before the court in October 2017. We expect the court to issue their opinion and judgment by the end of fiscal 2018. We continue to monitor the progress of ongoing discussions with tax authorities and the impact, if any, of the expected expiration of the statute of limitations in various taxing jurisdictions.

Net Income per Share

Net Income per Share	6 Months Ended
	Oct. 27, 2017
Earnings Per Share [Abstract]
Net Income per Share	14. Net Income per Share The following is a calculation of basic and diluted net income per share (in millions, except per share amounts): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Numerator: Net income $ 175 $ 109 $ 311 $ 173 Denominator: Shares used in basic computation 269 278 270 278 Dilutive impact of employee equity award plans 6 6 7 5 Shares used in diluted computation 275 284 277 283 Net Income per Share: Basic $ 0.65 $ 0.39 $ 1.15 $ 0.62 Diluted $ 0.64 $ 0.38 $ 1.12 $ 0.61 Potential shares from outstanding employee equity awards totaling 1 million and 5 million for the three months ended October 27, 2017 and October 28, 2016, respectively, and 2 million and 10 million for the six months ended October 27, 2017 and October 28, 2016, respectively, were excluded from the diluted net income per share calculations as their inclusion would have been anti-dilutive.

Segment, Geographic, and Signif

Segment, Geographic, and Significant Customer Information	6 Months Ended
	Oct. 27, 2017
Segment Reporting [Abstract]
Segment, Geographic, and Significant Customer Information	15. Segment, Geographic, and Significant Customer Information We operate in one industry segment: the design, manufacturing, marketing, and technical support of high-performance storage and data management solutions. We conduct business globally, and our sales and support activities are managed on a geographic basis. Our management reviews financial information presented on a consolidated basis, accompanied by disaggregated information it receives from our internal management system about revenues by geographic region, based on the location from which the customer relationship is managed, for purposes of allocating resources and evaluating financial performance. We do not allocate costs of revenues, research and development, sales and marketing, or general and administrative expenses to our geographic regions in this internal management reporting because management does not review operations or operating results, or make planning decisions, below the consolidated entity level. Summarized revenues by geographic region based on information from our internal management system and utilized by our Chief Executive Officer, who is considered our Chief Operating Decision Maker, is as follows (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 United States, Canada and Latin America (Americas) $ 796 $ 768 $ 1,522 $ 1,504 Europe, Middle East and Africa (EMEA) 431 396 832 783 Asia Pacific (APAC) 195 176 393 347 Net revenues $ 1,422 $ 1,340 $ 2,747 $ 2,634 Americas revenues consist of sales to Americas commercial and U.S. public sector markets. Sales to customers inside the U.S. were $726 million and $697 million during the three months ended October 27, 2017 and October 28, 2016, respectively, and were $1,376 million and $1,363 million during the six months ended October 27, 2017 and October 28, 2016, respectively. The majority of our assets, excluding cash, cash equivalents, short-term investments and accounts receivable, were attributable to our domestic operations. The following table presents cash, cash equivalents and short-term investments held in the U.S. and internationally in various foreign subsidiaries (in millions): October 27, 2017 April 28, 2017 U.S. $ 941 $ 425 International 5,024 4,496 Total $ 5,965 $ 4,921 With the exception of property and equipment, we do not identify or allocate our long-lived assets by geographic area. The following table presents property and equipment information for geographic areas based on the physical location of the assets (in millions): October 27, 2017 April 28, 2017 U.S. $ 595 $ 593 International 200 206 Total $ 795 $ 799 The following customers, each of which is a distributor, accounted for 10% or more of our net revenues: Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Arrow Electronics, Inc. 22 % 23 % 23 % 21 % Tech Data Corporation (previously presented as Avnet, Inc.) 19 % 20 % 20 % 20 % The following customers accounted for 10% or more of accounts receivable: October 27, 2017 April 28, 2017 Arrow Electronics, Inc. 14 % 15 % Tech Data Corporation (previously presented as Avnet, Inc.) 15 % 14 %

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Oct. 27, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	16. Commitments and Contingencies Operating Leases We lease various equipment, vehicles and office space in the U.S. and internationally. Future annual minimum lease payments under non-cancelable operating leases with an initial term in excess of one year totaled $203 million as of October 27, 2017. Purchase Orders and Other Commitments In the ordinary course of business, we make commitments to third-party contract manufacturers to manage manufacturer lead times and meet product forecasts, and to other parties to purchase various key components used in the manufacture of our products. A significant portion of our reported purchase commitments arising from these agreements consists of firm, non-cancelable, and unconditional commitments. As of October 27, 2017, we had $347 million in non-cancelable purchase commitments for inventory. We record a liability for firm, non-cancelable and unconditional purchase commitments for quantities in excess of our future demand forecasts consistent with the valuation of our excess and obsolete inventory. As of October 27, 2017 and April 28, 2017, such liability amounted to $10 million and is included in accrued expenses in our condensed consolidated balance sheets. To the extent that such forecasts are not achieved, our commitments and associated accruals may change. In addition to inventory commitments with contract manufacturers and component suppliers, we have open purchase orders and contractual obligations associated with our ordinary course of business for which we have not yet received goods or services. As of October 27, 2017, we had $31 million in construction related obligations and $199 million in other purchase obligations. Financing Guarantees While most of our arrangements for sales include short-term payment terms, from time to time we provide long-term financing to creditworthy customers. We have generally sold receivables financed through these arrangements on a non-recourse basis to third party financing institutions within 10 days of the contracts’ dates of execution, and we classify the proceeds from these sales as cash flows from operating activities in our condensed consolidated statements of cash flows. We account for the sales of these receivables as “true sales” as defined in the accounting standards on transfers of financial assets, as we are considered to have surrendered control of these financing receivables. Provided all other revenue recognition criteria have been met, we recognize product revenues for these arrangements, net of any payment discounts from financing transactions, upon product acceptance. We sold $66 million and $108 million of receivables during the six months ended October 27, 2017 and October 28, 2016, respectively. In addition, we enter into arrangements with leasing companies for the sale of our hardware systems products. These leasing companies, in turn, lease our products to end-users. The leasing companies generally have no recourse to us in the event of default by the end-user and we recognize revenue upon delivery to the end-user customer, if all other revenue recognition criteria have been met. Some of the leasing arrangements described above have been financed on a recourse basis through third-party financing institutions. Under the terms of recourse leases, which are generally three years or less, we remain liable for the aggregate unpaid remaining lease payments to the third-party leasing companies in the event of end-user customer default. These arrangements are generally collateralized by a security interest in the underlying assets. Where we provide a guarantee for recourse leases, we defer revenues subject to the industry-specific software revenue recognition guidance and recognize revenues for non-software deliverables in accordance with our multiple deliverable revenue arrangement policy. In connection with certain recourse financing arrangements, we receive advance payments associated with undelivered elements that are subject to customer refund rights. We defer revenue associated with these advance payments until the related refund rights expire and we perform the services. As of October 27, 2017 and April 28, 2017, the aggregate amount by which such contingencies exceeded the associated liabilities was not significant. To date, we have not experienced significant losses under our lease financing programs or other financing arrangements . We have entered into service contracts with certain of our end-user customers that are supported by third-party financing arrangements. If a service contract is terminated as a result of our non-performance under the contract or our failure to comply with the terms of the financing arrangement, we could, under certain circumstances, be required to acquire certain assets related to the service contract or to pay the aggregate unpaid financing payments under such arrangements. As of October 27, 2017, we have not been required to make any payments under these arrangements, and we believe the likelihood of having to acquire a material amount of assets or make payments under these arrangements is remote. The portion of the financial arrangement that represents unearned services revenue is included in deferred revenue and financed unearned services revenue in our condensed consolidated balance sheets . Legal Contingencies When a loss is considered probable and reasonably estimable, we record a liability in the amount of our best estimate for the ultimate loss. However, the likelihood of a loss with respect to a particular contingency is often difficult to predict, and determining a meaningful estimate of the loss or a range of loss may not be practicable based on the information available and the potential effect of future events and decisions by third parties that will determine the ultimate resolution of the contingency. We are subject to various legal proceedings and claims that arise in the normal course of business. We may, from time to time, receive claims that we are infringing third parties’ intellectual property rights, including claims for alleged patent infringement brought by non-practicing entities. We are involved in active patent litigations brought by non-practicing entities. We believe we have strong arguments that our products do not infringe and/or the asserted patents are invalid, and we intend to vigorously defend against the plaintiffs’ claims. However, there is no guarantee that we will prevail at trial and if a jury were to find that our products infringe, we could be required to pay significant monetary damages, and may cause product shipment delays, require us to redesign our products, or require us to enter into royalty or licensing agreements. Although management at present believes that the ultimate outcome of these proceedings, individually and in the aggregate, will not materially harm our financial position, results of operations, cash flows, or overall trends, legal proceedings are subject to inherent uncertainties, and unfavorable rulings or other events could occur. Unfavorable resolutions could include significant monetary damages. In addition, in matters for which injunctive relief or other conduct remedies are sought, unfavorable resolutions could include an injunction or other order prohibiting us from selling one or more products at all or in particular ways or requiring other remedies. An unfavorable outcome may result in a material adverse impact on our business, results of operations, financial position, and overall trends. No accrual has been recorded as of October 27, 2017 related to such matters as they are not probable and reasonably estimable.

Description of Business and S23

Description of Business and Significant Accounting Policies (Policies)	6 Months Ended
	Oct. 27, 2017
Accounting Policies [Abstract]
Basis of Presentation and Preparation	Basis of Presentation and Preparation Our fiscal year is reported on a 52- or 53-week year ending on the last Friday in April. An additional week is included in the first fiscal quarter approximately every six years to realign fiscal months with calendar months. Fiscal years 2018 and 2017, ending on April 27, 2018, and April 28, 2017, respectively, are each 52-week years, with 13 weeks in each of their quarters. The accompanying unaudited condensed consolidated financial statements have been prepared by the Company, and reflect all adjustments, consisting only of normal recurring adjustments, that are, in the opinion of management, necessary for the fair presentation of our financial position, results of operations, comprehensive income and cash flows for the interim periods presented. The statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information. Accordingly, these statements do not include all information and footnotes required by GAAP for annual consolidated financial statements, and should be read in conjunction with our audited consolidated financial statements as of and for the fiscal year ended April 28, 2017 contained in our Annual Report on Form 10-K. The results of operations for the three and six months ended October 27, 2017 are not necessarily indicative of the operating results to be expected for the full fiscal year or future operating periods. The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Such estimates include, but are not limited to, revenue recognition, reserves and allowances; inventory valuation and purchase order accruals; valuation of goodwill and intangibles; restructuring reserves; product warranties; employee compensation and benefit accruals; stock-based compensation; loss contingencies; valuation of investment securities; income taxes and fair value measurements. Actual results could differ materially from those estimates. There have been no significant changes in our significant accounting policies as of and for the six months ended October 27, 2017, as compared to the significant accounting policies described in our Annual Report on Form 10-K for the fiscal year ended April 28, 2017.
Accounting Standards on Transfers of Financial Assets	We account for the sales of these receivables as “true sales” as defined in the accounting standards on transfers of financial assets, as we are considered to have surrendered control of these financing receivables. Provided all other revenue recognition criteria have been met, we recognize product revenues for these arrangements, net of any payment discounts from financing transactions, upon product acceptance. We sold $66 million and $108 million of receivables during the six months ended October 27, 2017 and October 28, 2016, respectively.
Revenue Recognition	Where we provide a guarantee for recourse leases, we defer revenues subject to the industry-specific software revenue recognition guidance and recognize revenues for non-software deliverables in accordance with our multiple deliverable revenue arrangement policy. In connection with certain recourse financing arrangements, we receive advance payments associated with undelivered elements that are subject to customer refund rights.
Debt	The portion of the financial arrangement that represents unearned services revenue is included in deferred revenue and financed unearned services revenue in our condensed consolidated balance sheets .

Statements of Cash Flows Addi24

Statements of Cash Flows Additional Information (Tables)	6 Months Ended
	Oct. 27, 2017
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flows and Non-Cash Investing Activities	Non-cash investing activities and supplemental cash flow information are as follows (in millions): Six Months Ended October 27, 2017 October 28, 2016 Non-cash Investing Activities: Capital expenditures incurred but not paid $ 17 $ 35 Supplemental Cash Flow Information: Income taxes paid, net of refunds $ 28 $ 70 Interest paid $ 24 $ 23

Goodwill and Purchased Intang25

Goodwill and Purchased Intangible Assets, Net (Tables)	6 Months Ended
	Oct. 27, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Goodwill Activity	Goodwill activity is summarized as follows (in millions): Balance as of April 28, 2017 $ 1,684 Additions 55 Balance as of October 27, 2017 $ 1,739
Purchased Intangible Assets, Net	Purchased intangible assets, net are summarized below (in millions): October 27, 2017 April 28, 2017 Gross Accumulated Net Gross Accumulated Net Assets Amortization Assets Assets Amortization Assets Developed technology $ 164 $ (61 ) $ 103 $ 148 $ (44 ) $ 104 Customer contracts/relationships 43 (27 ) 16 43 (19 ) 24 Other purchased intangibles 9 (8 ) 1 9 (6 ) 3 Total purchased intangible assets $ 216 $ (96 ) $ 120 $ 200 $ (69 ) $ 131
Amortization Expense for Purchased Intangible Assets	Amortization expense for purchased intangible assets is summarized below (in millions): Three Months Ended Six Months Ended Statements of October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Operations Classification Developed technology $ 9 $ 7 $ 17 $ 13 Cost of revenues Customer contracts/relationships 4 3 8 7 Operating expenses Other purchased intangibles 1 1 2 2 Operating expenses Total $ 14 $ 11 $ 27 $ 22
Future Amortization Expense Related to Purchased Intangible Assets	As of October 27, 2017, future amortization expense related to purchased intangible assets is as follows (in millions): Fiscal Year Amount Remainder of 2018 $ 26 2019 47 2020 31 2021 16 Total $ 120

Balance Sheet Details (Tables)

Balance Sheet Details (Tables)	6 Months Ended
	Oct. 27, 2017
Statement Of Financial Position [Abstract]
Cash and Cash Equivalents	Cash and cash equivalents (in millions): October 27, 2017 April 28, 2017 Cash $ 3,111 $ 2,275 Cash equivalents 424 169 Cash and cash equivalents $ 3,535 $ 2,444
Inventories	Inventories (in millions): October 27, 2017 April 28, 2017 Purchased components $ 32 $ 28 Finished goods 76 135 Inventories $ 108 $ 163
Property and Equipment, Net	Property and equipment, net (in millions): October 27, 2017 April 28, 2017 Land $ 132 $ 132 Buildings and improvements 633 612 Leasehold improvements 100 93 Computer, production, engineering and other equipment 749 741 Computer software 352 353 Furniture and fixtures 96 90 Construction-in-progress 13 26 2,075 2,047 Accumulated depreciation and amortization (1,280 ) (1,248 ) Property and equipment, net $ 795 $ 799
Other Non-Current Assets	Other non-current assets (in millions): October 27, 2017 April 28, 2017 Deferred tax assets $ 483 $ 525 Other assets 151 156 Other non-current assets $ 634 $ 681
Accrued Expenses	Accrued expenses (in millions): October 27, 2017 April 28, 2017 Accrued compensation and benefits $ 291 $ 340 Sale-leaseback financing obligations 130 130 Product warranty liabilities 29 33 Other current liabilities 272 279 Accrued expenses $ 722 $ 782
Product Warranty Liabilities	The following tables summarize the activity related to product warranty liabilities and their balances as reported in our condensed consolidated balance sheets (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Balance at beginning of period $ 44 $ 61 $ 50 $ 70 Expense accrued during the period 7 1 8 5 Warranty costs incurred (7 ) (8 ) (14 ) (21 ) Balance at end of period $ 44 $ 54 $ 44 $ 54 October 27, 2017 April 28, 2017 Accrued expenses $ 29 $ 33 Other long-term liabilities 15 17 Total warranty liabilities $ 44 $ 50
Deferred Revenue and Financed Unearned Services Revenue	Deferred revenue and financed unearned services revenue (in millions): October 27, 2017 April 28, 2017 Deferred product revenue $ 123 $ 124 Deferred services revenue 2,881 2,999 Financed unearned services revenue 163 219 Total $ 3,167 $ 3,342 Reported as: Short-term $ 1,645 $ 1,744 Long-term 1,522 1,598 Total $ 3,167 $ 3,342

Other Income (Expense), Net (Ta

Other Income (Expense), Net (Tables)	6 Months Ended
	Oct. 27, 2017
Nonoperating Income Expense [Abstract]
Other Income (Expense), Net	Other income (expense), net consists of the following (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Interest income $ 19 $ 10 $ 35 $ 21 Interest expense (17 ) (12 ) (30 ) (27 ) Other income, net 4 2 6 5 Total other income (expense), net $ 6 $ — $ 11 $ (1 )

Financial Instruments and Fai28

Financial Instruments and Fair Value Measurements (Tables)	6 Months Ended
	Oct. 27, 2017
Investments Debt And Equity Securities [Abstract]
Summary of Investments	The following is a summary of our investments (in millions): October 27, 2017 April 28, 2017 Cost or Estimated Cost or Estimated Amortized Gross Unrealized Fair Amortized Gross Unrealized Fair Cost Gains Losses Value Cost Gains Losses Value Corporate bonds $ 1,747 $ 6 $ (3 ) $ 1,750 $ 1,535 $ 3 $ (2 ) $ 1,536 U.S. Treasury and government debt securities 474 — (2 ) 472 629 1 (2 ) 628 Foreign government debt securities 21 — — 21 21 — — 21 Commercial paper 504 — — 504 362 — — 362 Certificates of deposit 107 — — 107 99 — — 99 Mutual funds 34 — — 34 31 — — 31 Total debt and equity securities $ 2,887 $ 6 $ (5 ) $ 2,888 $ 2,677 $ 4 $ (4 ) $ 2,677
Contractual Maturities of Debt Investments	The following table presents the contractual maturities of our debt investments as of October 27, 2017 (in millions): Amortized Cost Fair Value Due in one year or less $ 1,242 $ 1,242 Due after one year through five years 1,187 1,186 Due after five years through ten years 419 421 Due after ten years 5 5 $ 2,853 $ 2,854
Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table summarizes our financial assets and liabilities measured at fair value on a recurring basis (in millions): October 27, 2017 Fair Value Measurements at Reporting Date Using Total Level 1 Level 2 Cash $ 3,111 $ 3,111 $ — Corporate bonds 1,750 — 1,750 U.S. Treasury and government debt securities 472 191 281 Foreign government debt securities 21 — 21 Commercial paper 504 — 504 Certificates of deposit 107 — 107 Total cash, cash equivalents and short-term investments $ 5,965 $ 3,302 $ 2,663 Other items: Mutual funds (1) $ 7 $ 7 $ — Mutual funds (2) $ 27 $ 27 $ — Foreign currency exchange contracts assets (1) $ 8 $ — $ 8 Foreign currency exchange contracts liabilities (3) $ (4 ) $ — $ (4 ) (1) Reported as other current assets in the condensed consolidated balance sheets (2) Reported as other non-current assets in the condensed consolidated balance sheets (3) Reported as accrued expenses in the condensed consolidated balance sheets

Financing Arrangements (Tables)

Financing Arrangements (Tables)	6 Months Ended
	Oct. 27, 2017
Debt Disclosure [Abstract]
Carrying Value of Long-Term Debt	The following table summarizes information relating to our long-term debt, which we collectively refer to as our Senior Notes (in millions, except interest rates): October 27, 2017 April 28, 2017 Effective Effective Amount Interest Rate Amount Interest Rate 2.00% Senior Notes Due December 2017 $ 750 2.25 % $ 750 2.25 % 2.00% Senior Notes Due September 2019 400 2.32 % — N/A 3.375% Senior Notes Due June 2021 500 3.54 % 500 3.54 % 3.25% Senior Notes Due December 2022 250 3.43 % 250 3.43 % 3.30% Senior Notes Due September 2024 400 3.42 % — N/A Total principal amount 2,300 1,500 Unamortized discount and issuance costs (10 ) (7 ) Total senior notes 2,290 1,493 Less: Current portion of long-term debt (750 ) (749 ) Total long-term debt $ 1,540 $ 744
Future Principal Debt Maturities	As of October 27, 2017, our aggregate future principal debt maturities, including the 2.00% Senior Notes due December 2017, are as follows (in millions): Fiscal Year Amount Remainder of 2018 $ 750 2020 400 2022 500 Thereafter 650 Total $ 2,300

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Oct. 27, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Activity Related to Stock Options	The following table summarizes information related to our stock options (in millions, except exercise price and contractual term): Number of Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding as of April 28, 2017 4 $ 35.76 Exercised (1 ) $ 24.14 Outstanding as of October 27, 2017 3 $ 37.30 2.77 $ 29 Exercisable as of October 27, 2017 3 $ 40.97 2.14 $ 16
Additional Information Related to Stock Options	Additional information related to our stock options is summarized below (in millions): Six Months Ended October 27, 2017 October 28, 2016 Intrinsic value of exercises $ 11 $ 11 Proceeds received from exercises $ 15 $ 20 Fair value of options vested $ 5 $ 9
Activity Related to Restricted Stock Units Including Performance-Based Restricted Stock Units	The following table summarizes information related to our RSUs, including PBRSUs, (in millions, except fair value): Number of Shares Weighted- Average Grant Date Fair Value Outstanding as of April 28, 2017 11 $ 28.81 Granted 4 $ 38.61 Vested (4 ) $ 31.29 Forfeited (1 ) $ 28.30 Outstanding as of October 27, 2017 10 $ 31.73
Number and Value of Shares Netted for Employee Taxes	The number and value of the shares netted for employee taxes are summarized in the table below (in millions): Six Months Ended October 27, 2017 October 28, 2016 Shares withheld for taxes 2 1 Fair value of shares withheld $ 60 $ 36
Schedule of Employee Stock Purchase Plan (ESPP)	The following table summarizes activity related to the purchase rights issued under the ESPP (in millions): Six Months Ended October 27, 2017 October 28, 2016 Shares issued under the ESPP 2 2 Proceeds from issuance of shares $ 42 $ 42
Stock-Based Compensation Expense	Stock-based compensation expense is included in the condensed consolidated statements of operations as follows (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Cost of product revenues $ 1 $ 1 $ 2 $ 2 Cost of hardware maintenance and other services revenues 2 3 5 7 Sales and marketing 16 21 37 44 Research and development 12 17 27 32 General and administrative 8 9 16 18 Total stock-based compensation expense $ 39 $ 51 $ 87 $ 103 Income tax benefit for stock-based compensation $ 9 $ 11 $ 18 $ 20
Summary of Activities Related to Stock Repurchase Program	The following table summarizes activity related to this program for the six months ended October 27, 2017 (in millions, except per share amounts): Number of shares repurchased 7 Average price per share $ 41.80 Aggregate purchase price $ 300 Remaining authorization at end of period $ 494
Summary of Activities Related to Dividends on Common Stock	The following is a summary of our activities related to dividends on our common stock (in millions, except per share amounts): Six Months Ended October 27, 2017 October 28, 2016 Dividends per share declared $ 0.40 $ 0.38 Dividend payments allocated to additional paid-in capital $ — $ 76 Dividend payments allocated to retained earnings $ 108 $ 29
Reconciliation of Retained Earnings	A reconciliation of retained earnings is as follows (in millions): Balance as of April 28, 2017 $ 40 Net income 311 Repurchases of common stock (226 ) Dividends (108 ) Balance as of October 27, 2017 $ 17
Accumulated Other Comprehensive Income (Loss) by Component Net of Tax	Changes in accumulated other comprehensive income (loss) by component, net of tax, are summarized below (in millions): Foreign Currency Translation Adjustments Unrealized Gains (Losses) on Available- for-Sale Securities Total Balance as of April 28, 2017 $ (29 ) $ — $ (29 ) Other comprehensive income, net of tax 8 2 10 Balance as of October 27, 2017 $ (21 ) $ 2 $ (19 )
Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss)	The amounts reclassified out of accumulated other comprehensive income (loss) are as follows (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Amounts Reclassified from AOCI Amounts Reclassified from AOCI Statements of Operations Classification Recognized (gains) losses on defined benefit obligations $ (1 ) $ 1 $ (1 ) $ 1 Operating expenses Realized gains on cash flow hedges — (1 ) — (1 ) Net revenues Total reclassifications $ (1 ) $ — $ (1 ) $ —

Derivatives and Hedging Activ31

Derivatives and Hedging Activities (Tables)	6 Months Ended
	Oct. 27, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Schedule of Notional Value of Outstanding Foreign Currency Exchange Forward Contracts	The notional amount of our outstanding U.S. dollar equivalent foreign currency exchange forward contracts consisted of the following (in millions): October 27, 2017 April 28, 2017 Balance Sheet Contracts Forward contracts sold $ 136 $ 165 Forward contracts purchased $ 248 $ 257
Schedule of Derivative Instruments Not Designated as Hedging Instruments	The effect of derivative instruments not designated as hedging instruments recognized in other income (expense), net on our condensed consolidated statements of operations was as follows (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Gain Recognized into Income Gain (Loss) Recognized into Income Foreign currency exchange contracts $ 1 $ 2 $ (1 ) $ 6

Restructuring Charges (Tables)

Restructuring Charges (Tables)	6 Months Ended
	Oct. 27, 2017
Restructuring And Related Activities [Abstract]
Activities Related to Restructuring Reserves	Activities related to our restructuring plans are summarized as follows (in millions): Six Months Ended Six Months Ended October 27, 2017 October 28, 2016 November 2016 Plan March 2016 Plan Balance at beginning of period $ 13 $ 45 Cash payments (5 ) (42 ) Balance at end of period $ 8 $ 3

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Oct. 27, 2017
Income Tax Disclosure [Abstract]
Effective Tax Rates	Our effective tax rates for the periods presented were as follows: Six Months Ended October 27, 2017 October 28, 2016 Effective tax rates 17.7 % 26.1 %

Net Income per Share (Tables)

Net Income per Share (Tables)	6 Months Ended
	Oct. 27, 2017
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Income Per Share	The following is a calculation of basic and diluted net income per share (in millions, except per share amounts): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Numerator: Net income $ 175 $ 109 $ 311 $ 173 Denominator: Shares used in basic computation 269 278 270 278 Dilutive impact of employee equity award plans 6 6 7 5 Shares used in diluted computation 275 284 277 283 Net Income per Share: Basic $ 0.65 $ 0.39 $ 1.15 $ 0.62 Diluted $ 0.64 $ 0.38 $ 1.12 $ 0.61

Segment, Geographic, and Sign35

Segment, Geographic, and Significant Customer Information (Tables)	6 Months Ended
	Oct. 27, 2017
Segment Reporting [Abstract]
Schedule of Revenues by Geographic Region	Summarized revenues by geographic region based on information from our internal management system and utilized by our Chief Executive Officer, who is considered our Chief Operating Decision Maker, is as follows (in millions): Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 United States, Canada and Latin America (Americas) $ 796 $ 768 $ 1,522 $ 1,504 Europe, Middle East and Africa (EMEA) 431 396 832 783 Asia Pacific (APAC) 195 176 393 347 Net revenues $ 1,422 $ 1,340 $ 2,747 $ 2,634
Schedule of Cash, Cash Equivalents and Short-Term Investments	The following table presents cash, cash equivalents and short-term investments held in the U.S. and internationally in various foreign subsidiaries (in millions): October 27, 2017 April 28, 2017 U.S. $ 941 $ 425 International 5,024 4,496 Total $ 5,965 $ 4,921
Schedule of Property and Equipment, Net by Geographic Areas	The following table presents property and equipment information for geographic areas based on the physical location of the assets (in millions): October 27, 2017 April 28, 2017 U.S. $ 595 $ 593 International 200 206 Total $ 795 $ 799
Schedule of Revenues from Significant Customers	The following customers, each of which is a distributor, accounted for 10% or more of our net revenues: Three Months Ended Six Months Ended October 27, 2017 October 28, 2016 October 27, 2017 October 28, 2016 Arrow Electronics, Inc. 22 % 23 % 23 % 21 % Tech Data Corporation (previously presented as Avnet, Inc.) 19 % 20 % 20 % 20 %
Schedule of Net Accounts Receivable from Significant Customers	The following customers accounted for 10% or more of accounts receivable: October 27, 2017 April 28, 2017 Arrow Electronics, Inc. 14 % 15 % Tech Data Corporation (previously presented as Avnet, Inc.) 15 % 14 %

Statements of Cash Flows Addi36

Statements of Cash Flows Additional Information - Supplemental Cash Flows and Non-Cash Investing Activities (Detail) - USD ($) $ in Millions	6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016
Non-cash Investing Activities:
Capital expenditures incurred but not paid	$ 17	$ 35
Supplemental Cash Flow Information:
Income taxes paid, net of refunds	28	70
Interest paid	$ 24	$ 23

Business Combinations - Additio

Business Combinations - Additional Information (Detail) - USD ($) $ in Millions	Aug. 04, 2017	Jun. 15, 2017
Plexistor Limited
Business Acquisition [Line Items]
Business acquisition cash paid		$ 24
Plexistor Limited | Developed Technology
Business Acquisition [Line Items]
Business acquisition cash paid		6
Greenqloud ehf
Business Acquisition [Line Items]
Business acquisition cash paid	$ 51
Greenqloud ehf | Developed Technology
Business Acquisition [Line Items]
Business acquisition cash paid	10
Goodwill | Plexistor Limited
Business Acquisition [Line Items]
Business acquisition cash paid		$ 17
Goodwill | Greenqloud ehf
Business Acquisition [Line Items]
Business acquisition cash paid	$ 38

Goodwill and Purchased Intang38

Goodwill and Purchased Intangible Assets, Net - Schedule of Goodwill Activity (Detail) $ in Millions	6 Months Ended
	Oct. 27, 2017USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Balance as of April 28, 2017	$ 1,684
Additions	55
Balance as of October 27, 2017	$ 1,739

Goodwill and Purchased Intang39

Goodwill and Purchased Intangible Assets, Net - Purchased Intangible Assets, Net (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Acquired Finite Lived Intangible Assets [Line Items]
Gross Assets	$ 216	$ 200
Accumulated Amortization	(96)	(69)
Net Assets	120	131
Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Gross Assets	164	148
Accumulated Amortization	(61)	(44)
Net Assets	103	104
Customer Contracts/Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Gross Assets	43	43
Accumulated Amortization	(27)	(19)
Net Assets	16	24
Other Purchased Intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Gross Assets	9	9
Accumulated Amortization	(8)	(6)
Net Assets	$ 1	$ 3

Goodwill and Purchased Intang40

Goodwill and Purchased Intangible Assets, Net - Amortization Expense for Purchased Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 14	$ 11	$ 27	$ 22
Cost of revenues | Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	9	7	17	13
Operating expenses | Customer Contracts/Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	4	3	8	7
Operating expenses | Other Purchased Intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 1	$ 1	$ 2	$ 2

Goodwill and Purchased Intang41

Goodwill and Purchased Intangible Assets, Net - Future Amortization Expense Related to Purchased Intangible Assets (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Acquired Finite Lived Intangible Assets [Line Items]
Net Assets	$ 120	$ 131
Intangible Assets Subject to Amortization
Acquired Finite Lived Intangible Assets [Line Items]
Remainder of 2018	26
2,019	47
2,020	31
2,021	16
Net Assets	$ 120

Balance Sheet Details - Cash an

Balance Sheet Details - Cash and Cash Equivalents (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017	Oct. 28, 2016	Apr. 29, 2016
Cash And Cash Equivalents [Abstract]
Cash	$ 3,111	$ 2,275
Cash equivalents	424	169
Cash and cash equivalents	$ 3,535	$ 2,444	$ 2,113	$ 2,868

Balance Sheet Details - Invento

Balance Sheet Details - Inventories (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Inventory Disclosure [Abstract]
Purchased components	$ 32	$ 28
Finished goods	76	135
Inventories	$ 108	$ 163

Balance Sheet Details - Propert

Balance Sheet Details - Property and Equipment Net (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 2,075	$ 2,047
Accumulated depreciation and amortization	(1,280)	(1,248)
Property and equipment, net	795	799
Land
Property Plant And Equipment [Line Items]
Property and equipment, gross	132	132
Buildings and improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	633	612
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	100	93
Computer, production, engineering and other equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	749	741
Computer software
Property Plant And Equipment [Line Items]
Property and equipment, gross	352	353
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	96	90
Construction-in-progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 13	$ 26

Balance Sheet Details - Additio

Balance Sheet Details - Additional Information (Detail) - USD ($) $ in Millions	Oct. 26, 2018	Jan. 26, 2018	Oct. 27, 2017	Sep. 08, 2017
Property Plant And Equipment [Line Items]
Sale price of assets				$ 306
Scenario, Forecast
Property Plant And Equipment [Line Items]
Sale of assets payments to be received	$ 96	$ 210
Other Current Assets
Property Plant And Equipment [Line Items]
Land and buildings held for sale book value			$ 118

Balance Sheet Details - Other N

Balance Sheet Details - Other Non-Current Assets (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Deferred tax assets	$ 483	$ 525
Other assets	151	156
Other non-current assets	$ 634	$ 681

Balance Sheet Details - Accrued

Balance Sheet Details - Accrued expenses (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Payables And Accruals [Abstract]
Accrued compensation and benefits	$ 291	$ 340
Sale-leaseback financing obligations	130	130
Product warranty liabilities	29	33
Other current liabilities	272	279
Accrued expenses	$ 722	$ 782

Balance Sheet Details - Product

Balance Sheet Details - Product Warranty Liabilities (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Apr. 28, 2017
Movement In Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 44	$ 61	$ 50	$ 70
Expense accrued during the period	7	1	8	5
Warranty costs incurred	(7)	(8)	(14)	(21)
Balance at end of period	44	54	44	54
Standard Product Warranty Accrual, Balance Sheet Classification [Abstract]
Accrued expenses					$ 29	$ 33
Other long-term liabilities					15	17
Total warranty liabilities	$ 44	$ 61	$ 50	$ 70	$ 44	$ 50

Balance Sheet Details - Deferre

Balance Sheet Details - Deferred Revenue and Financed Unearned Services Revenue (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Deferred Revenue And Credits [Line Items]
Deferred revenue and financed unearned services revenue	$ 3,167	$ 3,342
Short-term	1,645	1,744
Long-term	1,522	1,598
Deferred product revenue
Deferred Revenue And Credits [Line Items]
Deferred revenue and financed unearned services revenue	123	124
Deferred services revenue
Deferred Revenue And Credits [Line Items]
Deferred revenue and financed unearned services revenue	2,881	2,999
Financed unearned services revenue
Deferred Revenue And Credits [Line Items]
Deferred revenue and financed unearned services revenue	$ 163	$ 219

Other Income (Expense), Net (De

Other Income (Expense), Net (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Nonoperating Income Expense [Abstract]
Interest income	$ 19	$ 10	$ 35	$ 21
Interest expense	(17)	(12)	(30)	(27)
Other income, net	4	2	6	5
Total other income (expense), net	$ 6	$ 0	$ 11	$ (1)

Financial Instruments and Fai51

Financial Instruments and Fair Value Measurements - Summary of Investments (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	$ 2,887	$ 2,677
Gross unrealized gains	6	4
Gross unrealized losses	(5)	(4)
Estimated fair value	2,888	2,677
Corporate Bonds
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	1,747	1,535
Gross unrealized gains	6	3
Gross unrealized losses	(3)	(2)
Estimated fair value	1,750	1,536
U.S. Treasury and Government Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	474	629
Gross unrealized gains	0	1
Gross unrealized losses	(2)	(2)
Estimated fair value	472	628
Foreign Government Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	21	21
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	21	21
Commercial Paper
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	504	362
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	504	362
Certificates of Deposit
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	107	99
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	107	99
Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	34	31
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	$ 34	$ 31

Financial Instruments and Fai52

Financial Instruments and Fair Value Measurements - Contractual Maturities of Debt Investments (Detail) $ in Millions	Oct. 27, 2017USD ($)
Investments Debt And Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 1,242
Due after one year through five years, Amortized Cost	1,187
Due after five years through ten years, Amortized Cost	419
Due after ten years, Amortized Cost	5
Total, Amortized Cost	2,853
Due in one year or less, Estimated Fair Value	1,242
Due after one year through five years, Estimated Fair Value	1,186
Due after five years through ten years, Estimated Fair Value	421
Due after ten years, Estimated Fair Value	5
Total, Estimated Fair Value	$ 2,854

Financial Instruments and Fai53

Financial Instruments and Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) $ in Millions	Oct. 27, 2017USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 5,965
Other Current Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency exchange contracts assets	8	[1]
Accrued Expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency exchange contracts liabilities	(4)	[2]
Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1,750
U.S. Treasury and Government Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	472
Foreign Government Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	21
Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	504
Certificates of Deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	107
Mutual Funds | Other Current Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	7	[1]
Mutual Funds | Other Noncurrent Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	27	[3]
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,302
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Current Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency exchange contracts assets	0	[1]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Accrued Expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency exchange contracts liabilities	0	[2]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury and Government Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	191
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign Government Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Certificates of Deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual Funds | Other Current Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	7	[1]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual Funds | Other Noncurrent Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	27	[3]
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2,663
Significant Other Observable Inputs (Level 2) | Other Current Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency exchange contracts assets	8	[1]
Significant Other Observable Inputs (Level 2) | Accrued Expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency exchange contracts liabilities	(4)	[2]
Significant Other Observable Inputs (Level 2) | Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1,750
Significant Other Observable Inputs (Level 2) | U.S. Treasury and Government Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	281
Significant Other Observable Inputs (Level 2) | Foreign Government Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	21
Significant Other Observable Inputs (Level 2) | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	504
Significant Other Observable Inputs (Level 2) | Certificates of Deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	107
Significant Other Observable Inputs (Level 2) | Mutual Funds | Other Current Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	[1]
Significant Other Observable Inputs (Level 2) | Mutual Funds | Other Noncurrent Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	[3]
Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,111
Cash | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,111
Cash | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 0
[1]	Reported as other current assets in the condensed consolidated balance sheets
[2]	Reported as accrued expenses in the condensed consolidated balance sheets
[3]	Reported as other non-current assets in the condensed consolidated balance sheets

Financial Instruments and Fai54

Financial Instruments and Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	$ 2,316	$ 1,520

Financing Arrangements - Carryi

Financing Arrangements - Carrying Value of Long-Term Debt (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Debt Instrument [Line Items]
Total senior notes	$ 2,290	$ 1,493
Less: Current portion of long-term debt	(750)	(749)
Total long-term debt	1,540	744
Senior Notes
Debt Instrument [Line Items]
Total principal amount	2,300	1,500
Unamortized discount and issuance costs	(10)	(7)
Senior Notes | Due December 2017
Debt Instrument [Line Items]
Total principal amount	$ 750	$ 750
Debt Instrument, Effective Interest Rate	2.25%	2.25%
Senior Notes | Due September 2019
Debt Instrument [Line Items]
Total principal amount	$ 400	$ 0
Debt Instrument, Effective Interest Rate	2.32%
Senior Notes | Due June 2021
Debt Instrument [Line Items]
Total principal amount	$ 500	$ 500
Debt Instrument, Effective Interest Rate	3.54%	3.54%
Senior Notes | Due December 2022
Debt Instrument [Line Items]
Total principal amount	$ 250	$ 250
Debt Instrument, Effective Interest Rate	3.43%	3.43%
Senior Notes | Due September 2024
Debt Instrument [Line Items]
Total principal amount	$ 400	$ 0
Debt Instrument, Effective Interest Rate	3.42%

Financing Arrangements - Additi

Financing Arrangements - Additional Information (Detail)	Nov. 03, 2017USD ($)	Jul. 17, 2017USD ($)Extension	Oct. 27, 2017USD ($)	Apr. 28, 2017USD ($)
Debt Instrument [Line Items]
Sale leaseback transaction, remaining financing obligations			$ 130,000,000	$ 130,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, amount		$ 1,000,000,000
Credit facility, date expiry		Dec. 10, 2021
Credit facility, increase in facility		$ 300,000,000
Credit facility, number of extensions | Extension		2
Credit facility, extensions period		1 year
Credit facility, amounts drawn			0	0
Revolving Credit Facility | Letter Of Credit Sub Facility
Debt Instrument [Line Items]
Credit facility, amount		$ 50,000,000
Commercial Paper
Debt Instrument [Line Items]
Notes issued, principal amount			$ 719,000,000	$ 500,000,000
Weighted-average interest rate			1.43%	1.26%
Commercial Paper | Maximum
Debt Instrument [Line Items]
Notes issued, principal amount		$ 1,000,000,000
Debt instrument maturity period		397 days	44 days	38 days
Commercial Paper | Minimum
Debt Instrument [Line Items]
Debt instrument maturity period			13 days	7 days
Senior Notes
Debt Instrument [Line Items]
Notes issued, principal amount			$ 2,300,000,000	$ 1,500,000,000
Proceeds from issuance of notes, net of discount and issuance costs			795,000,000
Senior Notes | Due September 2019
Debt Instrument [Line Items]
Notes issued, principal amount			$ 400,000,000	0
Notes issued, interest rate			2.00%
Notes due date			Sep. 27, 2019
Senior Notes | Due June 2021
Debt Instrument [Line Items]
Notes issued, principal amount			$ 500,000,000	500,000,000
Notes issued, interest rate			3.375%
Senior Notes | Due September 2024
Debt Instrument [Line Items]
Notes issued, principal amount			$ 400,000,000	0
Notes issued, interest rate			3.30%
Notes due date			Sep. 29, 2024
Senior Notes | Due December 2017
Debt Instrument [Line Items]
Notes issued, principal amount			$ 750,000,000	750,000,000
Notes issued, interest rate			2.00%
Notes due date, month and year			2017-12
Senior Notes | Due December 2017 | Subsequent Event
Debt Instrument [Line Items]
Notes aggregate redemption price, plus accrued and unpaid interest	$ 751,000,000
Notes repurchased date	Nov. 3, 2017
Senior Notes | Due December 2022
Debt Instrument [Line Items]
Notes issued, principal amount			$ 250,000,000	$ 250,000,000
Notes issued, interest rate			3.25%

Financing Arrangements - Future

Financing Arrangements - Future Principal Debt Maturities (Detail) - Senior Notes - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Debt Instrument [Line Items]
Remainder of 2018	$ 750
2,020	400
2,022	500
Thereafter	650
Total	$ 2,300	$ 1,500

Stockholders' Equity - Activity

Stockholders' Equity - Activity Related to Stock Options (Detail) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended
	Oct. 27, 2017USD ($)$ / sharesshares
Number of Shares
Beginning balance, Number of Shares | shares	4
Options exercised, Number of Shares | shares	(1)
Ending balance, Number of Shares | shares	3
Options Exercisable, Number of Shares | shares	3
Weighted-Average Exercise Price
Beginning balance, Weighted-Average Exercise Price | $ / shares	$ 35.76
Options exercised, Weighted-Average Exercise Price | $ / shares	24.14
Ending balance, Weighted-Average Exercise Price | $ / shares	37.30
Options Exercisable, Weighted-Average Exercise Price | $ / shares	$ 40.97
Weighted-Average Remaining Contractual Term and Aggregate Intrinsic Value
Outstanding, Weighted-Average Remaining Contractual Term	2 years 9 months 8 days
Exercisable, Weighted-Average Remaining Contractual Term	2 years 1 month 21 days
Outstanding, Aggregate Intrinsic Value | $	$ 29
Exercisable, Aggregate Intrinsic Value | $	$ 16

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information Related to Stock Options (Detail) - USD ($) $ in Millions	6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Intrinsic value of exercises	$ 11	$ 11
Proceeds received from exercises	15	20
Fair value of options vested	$ 5	$ 9

Stockholders' Equity - Additi60

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions	Nov. 15, 2017	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to equity awards		$ 269,000,000		$ 269,000,000		$ 269,000,000
Unrecognized compensation expense will be amortized on a straight-line basis over a weighted-average remaining period, in years				2 years 3 months 19 days
Stock repurchase program, authorized amount		$ 9,600,000,000		$ 9,600,000,000		$ 9,600,000,000
Allocation of purchase price of share repurchases				$ 300,000,000
Repurchase of common stock, shares				7		276
Average price of common stock repurchased under repurchase program				$ 41.80		$ 33.07
Aggregate purchase price of common stock authorized under repurchase program				$ 300,000,000	$ 292,000,000	$ 9,100,000,000
Cash dividends declared, per common share		$ 0.20	$ 0.19	$ 0.40	$ 0.38
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash dividends declared, per common share	$ 0.20
Cash dividend payable date	Jan. 24, 2018
Cash dividend record date	Jan. 5, 2018
Additional Paid-in Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocation of purchase price of share repurchases				$ 74,000,000
Retained Earnings
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocation of purchase price of share repurchases				$ 226,000,000
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of Common stock issued to settle PBRSUs of target shares granted				0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of Common stock issued to settle PBRSUs of target shares granted				200.00%
Performance Based Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs grant date fair value		$ 20,000,000		$ 20,000,000		$ 20,000,000
Performance Based Restricted Stock Unit | PBRSU One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				2 years
Performance Based Restricted Stock Unit | PBRSU Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years

Stockholders' Equity - Activi61

Stockholders' Equity - Activity Related to Restricted Stock Units Including Performance-Based Restricted Stock Units (Detail) - Restricted Stock Units shares in Millions	6 Months Ended
	Oct. 27, 2017$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Number of Shares | shares	11
RSUs granted, Number of Shares | shares	4
RSUs vested, Number of Shares | shares	(4)
RSUs forfeited, Number of Shares | shares	(1)
Ending Balance, Number of Shares | shares	10
Beginning Balance, Weighted-Average Grant Date Fair Value | $ / shares	$ 28.81
RSUs granted, Weighted-Average Grant Date Fair Value | $ / shares	38.61
RSUs vested, Weighted-Average Grant Date Fair Value | $ / shares	31.29
RSUs forfeited, Weighted-Average Grant Date Fair Value | $ / shares	28.30
Ending Balance, Weighted-Average Grant Date Fair Value | $ / shares	$ 31.73

Stockholders' Equity - Number a

Stockholders' Equity - Number and Value of Shares Netted for Employee Taxes (Detail) - Restricted Stock Units - USD ($) shares in Millions, $ in Millions	6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares withheld for taxes	2	1
Fair value of shares withheld	$ 60	$ 36

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Employee Stock Purchase Plan (ESPP) (Detail) - USD ($) shares in Millions, $ in Millions	6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under the ESPP	2	2
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from issuance of shares	$ 42	$ 42

Stockholders' Equity - Stock-Ba

Stockholders' Equity - Stock-Based Compensation Expense (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 39	$ 51	$ 87	$ 103
Income tax benefit for stock-based compensation	9	11	18	20
Cost of Product Revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	1	1	2	2
Cost of Hardware Maintenance and Other Services Revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	2	3	5	7
Sales and Marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	16	21	37	44
Research and Development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	12	17	27	32
General and Administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 8	$ 9	$ 16	$ 18

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Activities Related to Stock Repurchase Program (Detail) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended	173 Months Ended
	Oct. 27, 2017USD ($)$ / sharesshares	Oct. 27, 2017USD ($)$ / sharesshares
Equity [Abstract]
Number of shares repurchased | shares	7	276
Average price per share | $ / shares	$ 41.80	$ 33.07
Aggregate purchase price	$ 300
Remaining authorization at end of period	$ 494	$ 494

Stockholders' Equity - Summar66

Stockholders' Equity - Summary of Activities Related to Dividends on Common Stock (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Dividends, Common Stock [Abstract]
Dividends per share declared	$ 0.20	$ 0.19	$ 0.40	$ 0.38
Dividend payments			$ 108	$ 105
Additional Paid-in Capital
Dividends, Common Stock [Abstract]
Dividend payments				76
Retained Earnings
Dividends, Common Stock [Abstract]
Dividend payments			$ 108	$ 29

Stockholders' Equity - Reconcil

Stockholders' Equity - Reconciliation of Retained Earnings (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Retained Earnings Adjustments [Line Items]
Beginning balance			$ 40
Net income	$ 175	$ 109	311	$ 173
Repurchases of common stock			(300)
Ending balance	$ 17		17
Retained Earnings
Retained Earnings Adjustments [Line Items]
Repurchases of common stock			(226)
Dividends			$ (108)

Stockholders' Equity - Accumula

Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) by Component Net of Tax (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ 2,780
Other comprehensive income, net of tax	$ (6)	$ (10)	10	$ (10)
Ending balance	2,777		2,777
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(29)
Other comprehensive income, net of tax			8
Ending balance	(21)		(21)
Unrealized Gains (Losses) on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			0
Other comprehensive income, net of tax			2
Ending balance	2		2
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(29)
Other comprehensive income, net of tax			10
Ending balance	$ (19)		$ (19)

Stockholders' Equity - Amounts

Stockholders' Equity - Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Operating expenses	$ 683	$ 687	$ 1,369	$ 1,391
Net revenues	1,422	1,340	2,747	2,634
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications	(1)	0	(1)	0
Reclassification out of Accumulated Other Comprehensive Income | Recognized (Gains) Losses on Defined Benefit Obligations
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Operating expenses	(1)	1	(1)	1
Reclassification out of Accumulated Other Comprehensive Income | Realized Gains on Cash Flow Hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net revenues	$ 0	$ (1)	$ 0	$ (1)

Derivatives and Hedging Activ70

Derivatives and Hedging Activities - Schedule of Notional Value of Outstanding Foreign Currency Forward Contracts (Detail) - Foreign Exchange Forward Contracts - Non Designated - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Short
Derivative [Line Items]
Forward contracts, Notional Amount	$ 136	$ 165
Long
Derivative [Line Items]
Forward contracts, Notional Amount	$ 248	$ 257

Derivatives and Hedging Activ71

Derivatives and Hedging Activities - Additional Information (Detail) - USD ($)	Oct. 27, 2017	Apr. 28, 2017
Foreign Exchange Forward Contracts | Cash Flow Hedging
Derivative [Line Items]
Forward contracts, Notional Amount	$ 0	$ 0

Derivatives and Hedging Activ72

Derivatives and Hedging Activities - Schedule of Derivative Instruments Not Designated as Cash Flow Hedges (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Foreign Exchange Forward Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Foreign currency exchange contracts	$ 1	$ 2	$ (1)	$ 6

Restructuring Charges - Additio

Restructuring Charges - Additional Information (Detail)	Apr. 28, 2017
March 2016 Restructuring
Restructuring Cost and Reserve [Line Items]
Reduction of global work force	11.00%
November 2016 Restructuring
Restructuring Cost and Reserve [Line Items]
Reduction of global work force	6.00%

Restructuring Charges - Activit

Restructuring Charges - Activities Related to Restructuring Reserves (Detail) - USD ($) $ in Millions	6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016
November 2016 Restructuring
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period	$ 13
Cash payments	(5)
Balance at end of period	$ 8
March 2016 Restructuring
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period		$ 45
Cash payments		(42)
Balance at end of period		$ 3

Income Taxes - Effective Tax Ra

Income Taxes - Effective Tax Rates (Detail)	6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016
Income Tax Disclosure [Abstract]
Effective tax rates	17.70%	26.10%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) $ in Millions	Oct. 27, 2017USD ($)
Income Tax Disclosure [Abstract]
Gross unrecognized tax benefits	$ 222
Unrecognized tax benefits included in other long-term liabilities	157
Unrecognized tax benefits that would affect provision for income taxes	$ 163

Net Income per Share - Computat

Net Income per Share - Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Net income per share:
Net income	$ 175	$ 109	$ 311	$ 173
Shares used in basic computation	269	278	270	278
Dilutive impact of employee equity award plans	6	6	7	5
Shares used in diluted computation	275	284	277	283
Basic	$ 0.65	$ 0.39	$ 1.15	$ 0.62
Diluted	$ 0.64	$ 0.38	$ 1.12	$ 0.61

Net Income per Share - Addition

Net Income per Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Earnings Per Share [Abstract]
Outstanding employee equity awards excluded from diluted net income per share calculations	1	5	2	10

Segment Geographic and Signific

Segment Geographic and Significant Customer Information - Additional Information (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017USD ($)	Oct. 28, 2016USD ($)	Oct. 27, 2017USD ($)Segment	Oct. 28, 2016USD ($)Segment
Segment Reporting Information [Line Items]
Number of industry segment | Segment			1	1
Net revenues	$ 1,422	$ 1,340	$ 2,747	$ 2,634
U.S.
Segment Reporting Information [Line Items]
Net revenues	$ 726	$ 697	$ 1,376	$ 1,363

Segment Geographic and Signif80

Segment Geographic and Significant Customer Information - Schedule of Revenues by Geographic Region (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Segment Reporting Information [Line Items]
Net revenues	$ 1,422	$ 1,340	$ 2,747	$ 2,634
United States, Canada And Latin America (Americas)
Segment Reporting Information [Line Items]
Net revenues	796	768	1,522	1,504
Europe, Middle East And Africa (EMEA)
Segment Reporting Information [Line Items]
Net revenues	431	396	832	783
Asia Pacific (APAC)
Segment Reporting Information [Line Items]
Net revenues	$ 195	$ 176	$ 393	$ 347

Segment Geographic and Signif81

Segment Geographic and Significant Customer Information - Schedule of Cash, Cash Equivalents and Short-Term Investments (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Segment Reporting Information [Line Items]
Cash, cash equivalents and short-term investments	$ 5,965	$ 4,921
U.S.
Segment Reporting Information [Line Items]
Cash, cash equivalents and short-term investments	941	425
International
Segment Reporting Information [Line Items]
Cash, cash equivalents and short-term investments	$ 5,024	$ 4,496

Segment Geographic and Signif82

Segment Geographic and Significant Customer Information - Schedule of Property and Equipment Net by Geographic Areas (Detail) - USD ($) $ in Millions	Oct. 27, 2017	Apr. 28, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment	$ 795	$ 799
U.S.
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment	595	593
International
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment	$ 200	$ 206

Segment Geographic and Signif83

Segment Geographic and Significant Customer Information - Significant Customers (Detail) - Net Revenue - Customer Concentration Risk	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Arrow Electronics, Inc.
Segment Reporting Information [Line Items]
Percentage of net revenues	22.00%	23.00%	23.00%	21.00%
Tech Data Corporation
Segment Reporting Information [Line Items]
Percentage of net revenues	19.00%	20.00%	20.00%	20.00%

Segment Geographic and Signif84

Segment Geographic and Significant Customer Information - Schedule of Net Accounts Receivable from Significant Customers (Detail) - Accounts Receivable - Credit Concentration Risk	6 Months Ended	12 Months Ended
	Oct. 27, 2017	Apr. 28, 2017
Arrow Electronics, Inc.
Segment Reporting Information [Line Items]
Percentage of net accounts receivable	14.00%	15.00%
Tech Data Corporation
Segment Reporting Information [Line Items]
Percentage of net accounts receivable	15.00%	14.00%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Apr. 28, 2017
Commitments and Contingencies Disclosure [Line Items]
Future annual minimum lease payments	$ 203,000,000
Accrued purchase commitments with contract manufacturers	10,000,000		$ 10,000,000
Sale of finance receivables	66,000,000	$ 108,000,000
Legal proceedings and claims	$ 0
Management estimation of loss contingency	Although management at present believes that the ultimate outcome of these proceedings, individually and in the aggregate, will not materially harm our financial position, results of operations, cash flows, or overall trends, legal proceedings are subject to inherent uncertainties, and unfavorable rulings or other events could occur. Unfavorable resolutions could include significant monetary damages. In addition, in matters for which injunctive relief or other conduct remedies are sought, unfavorable resolutions could include an injunction or other order prohibiting us from selling one or more products at all or in particular ways or requiring other remedies. An unfavorable outcome may result in a material adverse impact on our business, results of operations, financial position, and overall trends.
Maximum
Commitments and Contingencies Disclosure [Line Items]
Terms of recourse leases	3 years
Inventory
Commitments and Contingencies Disclosure [Line Items]
Purchase orders and other commitments	$ 347,000,000
Construction Related
Commitments and Contingencies Disclosure [Line Items]
Purchase orders and other commitments	31,000,000
Other
Commitments and Contingencies Disclosure [Line Items]
Purchase orders and other commitments	$ 199,000,000