NetApp (NTAP) 10-Q 25 Feb 15 2015 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Jan. 23, 2015	Feb. 11, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	23-Jan-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Trading Symbol	NTAP
Entity Registrant Name	NetApp, Inc.
Entity Central Index Key	1002047
Current Fiscal Year End Date	-20
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		311,757,916

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$2,539.70	$2,291
Short-term investments	2,712.80	2,712.30
Accounts receivable, net of allowances of $0.8 and $1.7 as of January 23, 2015 and April 25, 2014, respectively	666.3	855.9
Inventories	117.8	122.4
Other current assets	518	489.7
Total current assets	6,554.60	6,471.30
Property and equipment, net	1,050.70	1,108.80
Goodwill	1,031.30	988.1
Other intangible assets, net	105	121.5
Other non-current assets	493.1	529.5
Total assets	9,234.70	9,219.20
Current liabilities:
Accounts payable	194.2	247
Accrued compensation and benefits	282.6	407.8
Other current liabilities	335.1	386
Short-term deferred revenue	1,679.40	1,653.80
Total current liabilities	2,491.30	2,694.60
Long-term debt	1,494.70	995.5
Other long-term liabilities	310.4	296.2
Long-term deferred revenue	1,430.30	1,446.40
Total liabilities	5,726.70	5,432.70
Commitments and contingencies (Note 15)	0	0
Stockholders' equity:
Common stock, $0.001 par value, (311.6 and 324.5 shares issued and outstanding as of January 23, 2015 and April 25, 2014, respectively)	0.3	0.3
Additional paid-in capital	3,452.20	3,776
Retained earnings	69.8	1.1
Accumulated other comprehensive income (loss)	-14.3	9.1
Total stockholders' equity	3,508	3,786.50
Total liabilities and stockholders' equity	$9,234.70	$9,219.20

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, except Per Share data, unless otherwise specified
Statement Of Financial Position [Abstract]
Accounts receivable, allowances	$0.80	$1.70
Common stock, par value	$0.00	$0.00
Common stock, shares issued	311.6	324.5
Common stock, shares outstanding	311.6	324.5

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Revenues:
Product	$929.50	$1,015	$2,741.20	$2,901.10
Software entitlements and maintenance	226.6	227	672.1	687.3
Service	395.2	368	1,169.70	1,087.70
Net revenues	1,551.30	1,610	4,583	4,676.10
Cost of revenues:
Cost of product	419.6	450.7	1,215.60	1,323.90
Cost of software entitlements and maintenance	9.4	7.7	26.2	22.7
Cost of service	144.9	149.3	443.2	452.4
Total cost of revenues	573.9	607.7	1,685	1,799
Gross profit	977.4	1,002.30	2,898	2,877.10
Operating expenses:
Sales and marketing	474.8	475.9	1,443	1,423.20
Research and development	229.9	230.3	686.9	686.6
General and administrative	70.2	69.4	213.2	207.3
Restructuring and other charges	0	0	0	49.5
Total operating expenses	774.9	775.6	2,343.10	2,366.60
Income from operations	202.5	226.7	554.9	510.5
Other income (expense), net:
Interest income	8.6	7.9	25	26.4
Interest expense	-11.1	-6.7	-31	-29.7
Other income (expense), net	0.1	1.7	-0.2	6.9
Total other income (expense), net	-2.4	2.9	-6.2	3.6
Income before income taxes	200.1	229.6	548.7	514.1
Provision for income taxes	23.3	37.5	123.7	73.6
Net income	$176.80	$192.10	$425	$440.50
Net income per share:
Basic	$0.57	$0.57	$1.34	$1.28
Diluted	$0.56	$0.55	$1.31	$1.25
Shares used in net income per share calculations:
Basic	311.6	339.4	317.8	343.7
Diluted	317.1	346.2	323.3	351.7
Cash dividends declared per share	$0.17	$0.15	$0.50	$0.45

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net income	$176.80	$192.10	$425	$440.50
Other comprehensive income (loss):
Foreign currency translation adjustments	-16.1	-2.7	-26.9	0.9
Defined benefit obligations:
Defined benefit obligation adjustments	0	0.1	1.6	0.3
Income tax effect on defined benefit obligations	0	0	-0.5	0
Reclassification adjustments for actuarial net losses included in net income	0.1	0	0.3	0
Unrealized gains (losses) on available-for-sale securities:
Unrealized holding gains (losses) arising during the period	-0.4	1.6	-1.7	-2.4
Income tax effect on unrealized holding (gains) losses	0.1	0.1	0.3	1.1
Reclassification adjustments for gains included in net income	-0.3	0	-0.1	-1.1
Unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) arising during the period	17.4	1.5	13.1	-2
Reclassification adjustments for (gains) losses included in net income	-15.7	-0.2	-9.5	1.2
Other comprehensive income (loss)	-14.9	0.4	-23.4	-2
Comprehensive income	$161.90	$192.50	$401.60	$438.50

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014
Cash flows from operating activities:
Net income	$425	$440.50
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	234.6	252
Stock-based compensation	196.1	205.8
Deferred income taxes	2.1	-30.9
Excess tax benefit from stock-based compensation	-53.8	-33.4
Other non-cash items, net	27.5	8.5
Changes in assets and liabilities, net of acquisitions of businesses:
Accounts receivable	186.7	213.4
Inventories	4.6	21.3
Other operating assets	10.3	78.3
Accounts payable	-45.9	-69.8
Accrued compensation and other current liabilities	-162.1	-94.5
Deferred revenue	34.4	-27
Other operating liabilities	12	15.9
Net cash provided by operating activities	871.5	980.1
Cash flows from investing activities:
Purchases of investments	-1,431.50	-701.3
Maturities, sales and collections of investments	1,473.10	1,464
Purchases of property and equipment	-138.1	-165.4
Acquisitions of businesses	-84.6	0
Other investing activities, net	2.5	2.6
Net cash provided by (used in) investing activities	-178.6	599.9
Cash flows from financing activities:
Issuance of common stock under employee stock plans	145.6	191.8
Repurchase of common stock and forward contract	-918.9	-1,507
Excess tax benefit from stock-based compensation	53.8	33.4
Repayment of debt	0	-1,264.90
Issuance of long-term debt, net	494.7	0
Dividends paid	-156.9	-153.1
Other financing activities, net	-7.6	-7.5
Net cash used in financing activities	-389.3	-2,707.30
Effect of exchange rate changes on cash and cash equivalents	-54.9	2.9
Net increase (decrease) in cash and cash equivalents	248.7	-1,124.40
Cash and cash equivalents:
Beginning of period	2,291	3,277.10
End of period	$2,539.70	$2,152.70

Description_of_Business_and_Si

Description of Business and Significant Accounting Policies	9 Months Ended
	Jan. 23, 2015
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) is a global provider of innovative storage and data management software, systems and services. Our storage solutions help customers create the flexible, efficient and highly available IT infrastructures they need to support their organizations. We are a storage and data management provider to enterprises of all sizes, service providers, governmental organizations and original equipment manufacturers.
	Basis of Presentation and Preparation
	Our fiscal year is reported on a 52- or 53-week year ending on the last Friday in April. Each quarter of fiscal 2015 and 2014 is a 13-week period.
	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 and in accordance with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. 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 25, 2014 contained in our Annual Report on Form 10-K filed with the Securities and Exchange Commission on June 17, 2014. The results of operations for the three and nine months ended January 23, 2015 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 benefit accruals; stock-based compensation; loss contingencies; investment impairments; 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 nine months ended January 23, 2015, as compared to the significant accounting policies described in our Annual Report on Form 10-K for the fiscal year ended April 25, 2014.

Recent_Accounting_Standards_No

Recent Accounting Standards Not Yet Effective	9 Months Ended
	Jan. 23, 2015
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Recent Accounting Standards Not Yet Effective	2. Recent Accounting Standards Not Yet Effective
	In April 2014, the Financial Accounting Standards Board (FASB) issued an accounting standard update that changes the criteria for reporting discontinued operations and expands related disclosure requirements. This accounting standard will be effective for us beginning in our first quarter of fiscal 2016. The effects of this guidance will depend on the nature and significance of discontinued operations occurring after the effective date.
	In May 2014, the FASB issued new guidance 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, and the standard will be effective for us in the first quarter of our fiscal year 2018; early adoption is not permitted. We are currently evaluating the impact of this new standard on our consolidated financial statements, as well as which transition method we intend to use.

Statements_of_Cash_Flows_Addit

Statements of Cash Flows Additional Information	9 Months Ended
	Jan. 23, 2015
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):
		Nine Months Ended
		January 23,		January 24,
		2015		2014
	Non-cash Investing Activities:
	Capital expenditures incurred but not paid	$	12.2	$	25.7
	Acquisition of software through long-term financing	$	12.3	$	11.4
	Supplemental Cash Flow Information:
	Income taxes paid, net of refunds	$	89	$	39.5
	Interest paid	$	32.5	$	35

Business_Combinations

Business Combinations	9 Months Ended
	Jan. 23, 2015
Business Combinations [Abstract]
Business Combinations	4. Business Combinations
	On October 27, 2014, we completed the acquisition of certain assets related to Riverbed Technology, Inc.’s SteelStore product line for $79.1 million in cash. The SteelStore product line supports leading backup applications and cloud providers so that customers have a choice in how they extend their existing data protection infrastructure into the cloud.
	In addition, on the same date, we acquired certain intangible assets from a privately-held software developer for $5.5 million in cash.
	Following are the preliminary fair values of assets acquired and liabilities assumed as of the closing date (in millions):
	Prepaid expenses and other current assets	$	2.7
	Finite-lived intangible assets		31.8
	Goodwill		43.2
	Deferred income taxes		6.9
	Other non-current assets		1.1
	Total assets acquired		85.7
	Deferred revenues		(1.1	)
	Total purchase price	$	84.6
	The results of operations related to these acquisitions have been included in our condensed consolidated statements of operations from the acquisition date. Pro forma results of operations have not been presented because the acquisitions were not material to our results of operations.

Goodwill_and_Purchased_Intangi

Goodwill and Purchased Intangible Assets, Net	9 Months Ended
	Jan. 23, 2015
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 25, 2014	$	988.1
	Goodwill acquired		43.2
	Balance as of January 23, 2015	$	1,031.30
	Purchased intangible assets, net are summarized below (in millions):
		January 23, 2015							25-Apr-14
		Gross		Accumulated			Net		Gross		Accumulated			Net
		Assets		Amortization			Assets		Assets		Amortization			Assets
	Developed technology	$	312.4	$	(210.0	)	$	102.4	$	283	$	(162.6	)	$	120.4
	Customer contracts/relationships		5		(2.5	)		2.5		9.6		(9.0	)		0.6
	Trademarks and trade names		2.9		(2.8	)		0.1		2.9		(2.4	)		0.5
	Covenants not to compete		—		—			—		1.6		(1.6	)		—
	Total purchased intangible assets	$	320.3	$	(215.3	)	$	105	$	297.1	$	(175.6	)	$	121.5
	Amortization expense for purchased intangible assets is summarized below (in millions):
		Three Months Ended					Nine Months Ended				Statement of
		January 23,		January 24,			January 23,		January 24,		Operations
		2015		2014			2015		2014		Classifications
	Developed technology	$	18.9	$	14.2		$	47.4	$	42.8	Cost of  revenues
	Customer contracts/relationships		0.2		0.3			0.4		1	Operating expenses
	Trademarks and trade names		0.1		0.1			0.4		0.3	Operating expenses
	Covenants not to compete		—		0.1			—		0.4	Operating expenses
		$	19.2	$	14.7		$	48.2	$	44.5
	As of January 23, 2015, future amortization expense related to purchased intangible assets is as follows (in millions):
	Fiscal Year	Amount
	Remainder of 2015	$	15.5
	2016		58.4
	2017		13.9
	2018		9.4
	2019		5.2
	Thereafter		2.6
	Total	$	105

Balance_Sheet_Details

Balance Sheet Details	9 Months Ended
	Jan. 23, 2015
Statement Of Financial Position [Abstract]
Balance Sheet Details	6. Balance Sheet Details
	Cash and cash equivalents (in millions):
		January 23,			April 25,
		2015			2014
	Cash	$	2,266.70		$	2,174.00
	Cash equivalents		273			117
	Cash and cash equivalents	$	2,539.70		$	2,291.00
	Inventories (in millions):
		January 23,			April 25,
		2015			2014
	Purchased components	$	25.9		$	17.6
	Finished goods		91.9			104.8
	Inventories	$	117.8		$	122.4
	Other current assets (in millions):
		January 23,			April 25,
		2015			2014
	Prepaid expenses and other current assets	$	266		$	219.4
	Deferred tax assets		252			270.3
	Other current assets	$	518		$	489.7
	Property and equipment, net (in millions):
		January 23,			April 25,
		2015			2014
	Land	$	265.5		$	265.7
	Buildings and building improvements		605.5			541.7
	Leasehold improvements		104.8			102.9
	Computers, production, engineering and other equipment		758.4			753.8
	Software		372.3			369.1
	Furniture and fixtures		85.5			86.4
	Construction-in-progress		27.7			72.9
			2,219.70			2,192.50
	Accumulated depreciation and amortization		(1,169.0	)		(1,083.7	)
	Property and equipment, net	$	1,050.70		$	1,108.80
	The net book value of software, which includes capitalized internal-use software development costs, is summarized below (in millions):
		January 23,			April 25,
		2015			2014
	Software	$	71		$	103.5
	Other non-current assets (in millions):
		January 23,			April 25,
		2015			2014
	Auction rate securities	$	—		$	36
	Deferred tax assets		250.6			245
	Other assets		242.5			248.5
	Other non-current assets	$	493.1		$	529.5
	Short-term and long-term deferred revenue (in millions):
		January 23,			April 25,
		2015			2014
	Product	$	24.2		$	23.4
	Software entitlements and maintenance and service		3,085.50			3,076.80
	Total	$	3,109.70		$	3,100.20
	Reported as:
		January 23,			April 25,
		2015			2014
	Short-term	$	1,679.40		$	1,653.80
	Long-term		1,430.30			1,446.40
	Total	$	3,109.70		$	3,100.20

Financial_Instruments_and_Fair

Financial Instruments and Fair Value Measurements	9 Months Ended
	Jan. 23, 2015
Investments Debt And Equity Securities [Abstract]
Financial Instruments and Fair Value Measurements	7. 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):
		January 23, 2015											25-Apr-14
					Gross Unrealized										Gross Unrealized
		Cost or			Gains		Losses			Estimated			Cost or		Gains		Losses			Estimated
		Amortized								Fair Value			Amortized							Fair Value
		Cost											Cost
	Corporate bonds	$	2,083.90		$	6.6	$	(0.4	)		2,090.10		$	2,142.30	$	10.5	$	(0.5	)	$	2,152.30
	U.S. Treasury and government debt		521.4			1.4		(0.1	)		522.7			263.4		0.3		(0.1	)		263.6
	securities
	Commercial paper		15			—		—			15			168.4		—		—			168.4
	Certificates of deposit		358			—		—			358			245		—		—			245
	Auction rate securities		—			—		—			—			36.9		—		(0.9	)		36
	Equity funds		30.4			—		—			30.4			32.7		—		—			32.7
	Total debt and equity securities	$	3,008.70		$	8	$	(0.5	)	$	3,016.20		$	2,888.70	$	10.8	$	(1.5	)	$	2,898.00
	The unrealized losses on our available-for-sale investments were caused by market value declines as a result of the economic environment, as well as fluctuations in market interest rates. Because the declines in market value are attributable to changes in market conditions and not credit quality, and because we have determined that (i) we do not have the intent to sell any of these investments and (ii) it is not more likely than not that we will be required to sell any of these investments before recovery of the entire amortized cost basis, we have concluded that no other-than-temporary impairments were required to be recognized on these investments as of January 23, 2015.
	The following table presents the contractual maturities of our debt investments as of January 23, 2015 (in millions):
		Amortized Cost			Fair Value
	Due in one year or less	$	1,479.80		$	1,482.00
	Due in two through five years		1,498.50			1,503.80
		$	2,978.30		$	2,985.80
	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):
		January 23, 2015
					Fair Value Measurements at Reporting Date Using
					Quoted Prices		Significant
					in Active Markets		Other
					for Identical Assets		Observable Inputs
		Total			(Level 1)		(Level 2)
	Assets
	Corporate bonds	$	2,090.10		$	—	$	2,090.10
	U.S. Treasury and government debt securities		522.7			140.4		382.3
	Commercial paper		15			—		15
	Certificates of deposit		358			—		358
	Equity funds		30.4			30.4		—
	Foreign currency contracts		21.5			—		21.5
	Total	$	3,037.70		$	170.8	$	2,866.90
	Liabilities
	Foreign currency contracts	$	(6.9	)	$	—	$	(6.9	)
	The following table summarizes the balance sheet classifications of our financial assets and liabilities measured at fair value on a recurring basis (in millions):
		January 23, 2015
					Fair Value Measurements at Reporting Date Using
					Quoted Prices		Significant
					in Active Markets		Other
					for Identical Assets		Observable Inputs
		Total			(Level 1)		(Level 2)
	Assets
	Cash equivalents	$	273		$	—	$	273
	Short-term investments		2,712.80			140.4		2,572.40
	Other current assets		24.4			2.9		21.5
	Other non-current assets		27.5			27.5		—
	Total	$	3,037.70		$	170.8	$	2,866.90
	Liabilities
	Other current liabilities	$	(6.9	)	$	—	$	(6.9	)
	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 a third-party pricing provider that incorporates standard inputs in various asset price models. 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 financial instruments. As of January 23, 2015, we have not made any adjustments to the prices obtained from our third-party pricing providers.
	During the three months ended January 23. 2015, we settled our remaining investments in Auction Rate Securities (ARSs), which had been classified as Level 3 financial instruments at their respective par values.
	The table below provides a reconciliation of the beginning and ending balance of our Level 3 ARSs (in millions).
	Three Months Ended					Nine Months Ended
	January 23,			January 24,		January 23,			January 24,
	2015			2014		2015			2014
Balance at beginning of period	$	23		$	39.5	$	36		$	42
Total unrealized gains, net included in other comprehensive		0.3			0.9		0.9			0.7
income (loss)
Total realized gains included in earnings		—			—		—			0.7
Sales		—			—		(10.0	)		(3.0	)
Settlements		(23.3	)		—		(26.9	)		—
Balance at end of period	$	—		$	40.4	$	—		$	40.4
Fair Value of Debt
As of January 23, 2015, the fair value of our long-term debt was approximately $1,521.3 million. The fair value of our debt was based on observable market prices in a less active market and discounted cash flow models that take into consideration variables such as credit-rating and interest rate changes. All of our debt obligations are categorized as Level 2 financial instruments.

Financing_Arrangements

Financing Arrangements	9 Months Ended
	Jan. 23, 2015
Debt Disclosure [Abstract]
Financing Arrangements	8. Financing Arrangements
	Long-term Debt
	The following table summarizes the carrying value of our long-term debt (in millions):
		23-Jan-15						25-Apr-14
					Effective						Effective
		Amount			Interest Rate			Amount			Interest Rate
	2.00% Senior Notes Due 2017	$	750			2.25	%	$	750			2.25	%
	3.375% Senior Notes Due 2021		500			3.54	%		—		N/A
	3.25% Senior Notes Due 2022		250			3.43	%		250			3.43	%
	Total principal amount		1,500.00						1,000.00
	Less: Unamortized discount		(5.3	)					(4.5	)
	Total long-term debt	$	1,494.70					$	995.5
	__________________
	N/A - Not Applicable
	Senior Notes
	On June 5, 2014 we issued $500.0 million aggregate par value of 3.375% Senior Notes, with a maturity date of June 15, 2021, and received proceeds of approximately $494.7 million, net of discount and issuance costs, which will be used for general corporate purposes, including possible stock repurchases, dividends, capital expenditures, working capital and potential acquisitions and strategic transactions. Our 2.00% Senior Notes and 3.25% Senior Notes, with a par value of $750.0 million and $250.0 million, respectively, were issued in December 2012. We collectively refer to such long-term debt as our Senior Notes. Interest on our Senior Notes is paid semi-annually on June 15 and December 15. Our Senior Notes, which are unsecured, unsubordinated obligations, rank equally in right of payment with any 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 sale and lease-back transactions; and to consolidate, merge or sell all or substantially all of our assets. As of January 23, 2015, we were in compliance with all covenants associated with the Senior Notes.
	As of January 23, 2015, our aggregate future principal debt maturities are as follows (in millions):
	Fiscal Year				Amount
	2018				$	750
	Thereafter					750
	Total				$	1,500.00
	Credit Facility
	In December 2012, we entered into a credit agreement with a syndicated group of lenders that is scheduled to expire on December 21, 2017 and provides for an unsecured $250.0 million revolving credit facility that is comprised of revolving loans, Eurocurrency loans and/or swingline loans. The credit facility includes a $100.0 million foreign currency sub-facility, a $50.0 million letter of credit sub-facility and a $10.0 million swingline sub-facility available on same-day notice. Available borrowings under the credit facility are reduced by the amount of any outstanding borrowings on the sub-facilities. We may also, subject to certain requirements, request an increase in the facility up to an additional $100.0 million and request two additional one-year extensions, subject to certain conditions. The proceeds from the facility may be used by us for general corporate purposes.
	Borrowings under the facility, except for swingline loans, accrue interest in arrears at an alternate base rate as defined in the credit agreement or, at our option, an adjusted London Interbank Offered Rate (LIBOR) plus in each case, a spread (based on our public debt ratings and the type of loan) ranging from 0.2% to 1.2%. Swingline borrowings accrue interest at an alternate base rate. In addition, we are required to pay fees to maintain the credit facility, whether or not we have outstanding borrowings. The facility contains financial covenants requiring us to maintain a maximum leverage ratio of not more than 3.0:1.0 and a minimum interest coverage ratio of not less than 3.5:1.0. The facility contains customary affirmative and negative covenants, including covenants that limit our ability to incur debt secured by liens on assets or indebtedness of our subsidiaries and to consolidate, merge or sell all or substantially all of our assets. As of January 23, 2015, no borrowings were outstanding under the facility and we were in compliance with all covenants associated with the facility.
	Other Long-Term Financing Arrangements
	The following presents the amounts due under other long-term financing arrangements (in millions):
		January 23,			April 25,
		2015			2014
	Other long-term financing arrangements	$	17.6		$	13.1
	Less:  current portion		(9.4	)		(6.6	)
	Non-current portion of other long-term financing arrangements	$	8.2		$	6.5

Stockholders_Equity

Stockholders' Equity	9 Months Ended
	Jan. 23, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stockholders' Equity	9. Stockholders’ Equity
	Stock Options
	The following table summarizes activity related to our stock options (in millions, except for exercise price and contractual term):
		Number			Weighted-			Weighted-			Aggregate
		of Shares			Average			Average			Intrinsic
					Exercise			Remaining			Value
					Price			Contractual Term
								(Years)
	Outstanding as of April 25, 2014		14.5		$	34.1
	Granted		2.2		$	36.64
	Exercised		(4.0	)	$	25.33
	Forfeited and expired		(0.4	)	$	43.4
	Outstanding as of January 23, 2015		12.3		$	37.03			3.85		$	62.6
	Vested and expected to vest as of January 23, 2015		11.8		$	37.05			3.76			61
	Exercisable as of January 23, 2015		8.1		$	37.23			2.91			48.3
	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):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Intrinsic value of exercises	$	61.2		$	81.3
	Proceeds received from exercises	$	99.9		$	147.7
	Fair value of options vested	$	26.3		$	36
	Restricted Stock Units
	The following table summarizes activity related to our restricted stock units (RSUs) (in millions, except for fair value):
		Number of			Weighted-
		Shares			Average
					Grant Date
					Fair Value
	Outstanding as of April 25, 2014		13.2		$	38.35
	Granted		6.3			35.8
	Vested		(4.3	)		40.05
	Forfeited		(1.3	)		37.71
	Outstanding as of January 23, 2015		13.9			36.73
	RSUs are converted into common stock upon vesting. We primarily use the net share settlement approach upon vesting, where a portion of the shares are withheld as settlement of statutory 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):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Shares withheld for taxes		1.4			1.3
	Fair value of shares withheld	$	51.4		$	51.4
	Employee Stock Purchase Plan
	The following table summarizes activity related to the purchase rights issued under the Employee Stock Purchase Plan (ESPP) (in millions):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Shares issued under the ESPP		3.4			3.8
	Proceeds from issuance of shares	$	97.1		$	95.5
	Stock-Based Compensation Expense
	Stock-based compensation expense is included in the condensed consolidated statements of operations as follows (in millions):
		Three Months Ended						Nine Months Ended
		January 23,			January 24,			January 23,			January 24,
		2015			2014			2015			2014
	Cost of product revenues	$	1.4		$	1.5		$	4.5		$	4.2
	Cost of service revenues		4			4.6			12.4			12.8
	Sales and marketing		29.6			33			87			94.6
	Research and development		21.9			23.6			64.6			66.6
	General and administrative		9.1			9.2			27.6			27.6
	Total stock-based compensation expense	$	66		$	71.9		$	196.1		$	205.8
	As of January 23, 2015, total unrecognized compensation expense related to our equity awards was $416.7 million, which is expected to be recognized on a straight-line basis over a weighted-average remaining service period of 2.4 years.
	Total income tax benefit associated with employee stock transactions and recognized in stockholders’ equity were as follows (in millions):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Income tax benefit associated with employee stock transactions	$	54		$	22.5
Stock Repurchase Program
As of January 23, 2015, our Board of Directors has authorized the repurchase of up to $7.1 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 nine months ended January 23, 2015 (in millions, except per share information):
Number of shares repurchased		23.1
Average price per share	$	39.73
Aggregate purchase price	$	918.9
Remaining authorization at end of period	$	205.9
The aggregate purchase price of our stock repurchases for the nine months ended January 23, 2015 consisted of $918.9 million of open market purchases, of which $667.4 million and $251.5 million was allocated to additional paid-in capital and retained earnings, respectively.
On February 9, 2015, our Board of Directors increased the authorization to repurchase our common stock by $2.5 billion.
Dividends
The following is a summary of our activities related to dividends on our common stock (in millions, except per share amounts):
	Nine Months Ended
	January 23,			January 24,
	2015			2014
Dividends per share declared and paid	$	0.495		$	0.45
Dividend payments allocated to additional paid-in capital	$	52.1		$	50.4
Dividend payments allocated to retained earnings	$	104.8		$	102.7
On February 11, 2015, we declared a cash dividend of $0.165 per share of common stock, payable on April 23, 2015 to holders of record as of the close of business on April 10, 2015. 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 the Company to be legally authorized under the laws of the state in which we are incorporated.
Retained Earnings
A reconciliation of retained earnings for the nine months ended January 23, 2015 is as follows (in millions):
Balance as of April 25, 2014	$	1.1
Net income		425
Repurchases of common stock		(251.5	)
Dividends		(104.8	)
Balance as of January 23, 2015	$	69.8
Accumulated Other Comprehensive Income
Changes in accumulated other comprehensive income (AOCI) by component, net of tax, for the nine months ended January 23, 2015 are summarized below (in millions):
	Foreign			Defined			Unrealized			Unrealized			Total
	Currency			Benefit			Gains on			Gains
	Translation			Obligation			Available-			(Losses) on
	Adjustments			Adjustments			for-Sale			Derivatives
							Securities			Instruments
Balance as of April 25, 2014	$	5.5		$	(4.8	)	$	8.9		$	(0.5	)	$	9.1
Other comprehensive income (loss) (OCI)		(26.9	)		1.1			(1.4	)		13.1			(14.1	)
before reclassifications, net of tax
Amounts reclassified from AOCI, net of tax		—			0.3			(0.1	)		(9.5	)		(9.3	)
Net OCI		(26.9	)		1.4			(1.5	)		3.6			(23.4	)
Balance as of January 23, 2015	$	(21.4	)	$	(3.4	)	$	7.4		$	3.1		$	(14.3	)
The amounts reclassified out of AOCI are as follows (in millions):
	Three Months Ended						Nine Months Ended
	January 23,			January 24,			January 23,			January 24,
	2015			2014			2015			2014
	Amounts Reclassified from AOCI						Amounts Reclassified from AOCI						Statements of
													Operations Location
Recognized losses on defined benefit	$	0.1		$	—		$	0.3		$	—		Operating expenses
obligations
Realized gains on available-for-sale		(0.3	)		—			(0.1	)		(1.1	)	Other income (expense), net
securities
Realized (gains) losses on cash flow hedges		(15.7	)		(0.2	)		(9.5	)		1.2		Net revenues
Total reclassifications	$	(15.9	)	$	(0.2	)	$	(9.3	)	$	0.1

Derivatives_and_Hedging_Activi

Derivatives and Hedging Activities	9 Months Ended
	Jan. 23, 2015
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	10. Derivatives and Hedging Activities
	We use derivative instruments to manage exposures to foreign currency risk. 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):
		January 23,		April 25,
		2015		2014
	Cash Flow Hedges
	Forward contracts purchased	$	159.1	$	122.6
	Balance Sheet Contracts
	Forward contracts sold		183.2		155.5
	Forward contracts purchased		304.7		389.9
	We have master netting arrangements in place 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 January 23, 2015 and April 25, 2014. We did not recognize any gains and losses in earnings due to hedge ineffectiveness for any period presented.
	The effect of derivative instruments designated as cash flow hedges recognized in net revenues on our condensed consolidated statements of operations is presented in the condensed consolidated statements of comprehensive income and Note 9.
	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				Nine Months Ended
		January 23,		January 24,		January 23,		January 24,
		2015		2014		2015		2014
		Gain Recognized into Income				Gain Recognized into Income
	Foreign exchange contracts	$	11	$	1	$	9.4	$	1.8

Restructuring_and_Other_Charge

Restructuring and Other Charges	9 Months Ended
	Jan. 23, 2015
Restructuring And Related Activities [Abstract]
Restructuring and Other Charges	11. Restructuring and Other Charges
	In May 2013, we initiated a business restructuring plan under which we realigned internal resources, resulting in a reduction of our global workforce of approximately 7%. Such activities were completed in the year ended April 25, 2014. In March 2014, we initiated a business realignment plan designed to focus our resources on key strategic initiatives and streamline our business in light of the constrained IT spending environment, resulting in a reduction of our global workforce of approximately 4%. Such activities were completed in the nine months ended January 23, 2015. Restructuring and other charges consisted primarily of employee severance-related costs.
	Activities related to these plans are summarized as follows (in millions):
		Nine Months Ended			Nine Months Ended
		January 23, 2015			January 24, 2014
		(March 2014 Plan)			(May 2013 Plan)
	Balance at beginning of period	$	26.5		$	—
	Net charges		—			49.5
	Cash payments		(26.5	)		(48.9	)
	Balance at end of period	$	—		$	0.6
	The liability for our restructuring plans is included in accrued compensation and related benefits in our condensed consolidated balance sheets.

Income_Taxes

Income Taxes	9 Months Ended
	Jan. 23, 2015
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes
	Our effective tax rates for the periods presented were as follows:
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Effective tax rates		22.5	%		14.3	%
	Our effective tax rates reflect the impact of a significant amount of our earnings being taxed in foreign jurisdictions at rates below the U.S. statutory tax rate. In addition, our effective tax rate for the nine months ended January 23, 2015 was impacted by the extension of the federal research credit and the settlements of income tax audits as discussed below.
	On December 19, 2014 the federal research credit was retroactively extended for amounts paid or incurred after December 31, 2013 and before January 1, 2015. As a result of the extension, during the three and nine months ended January 23, 2015, we recorded a benefit of $6.0 million related to the current year research credit and a discrete benefit of $4.1 million related to a prior year credit that we will retroactively claim. The federal research credit expired on December 31, 2014.
	In July 2014, the Internal Revenue Service (IRS) completed the examination of our fiscal 2005 to 2007 income tax returns upon approval by the Joint Committee of Taxation. We recorded a $47.4 million income tax provision attributable to the audit settlement and related re-measurement of uncertain tax positions for tax years subject to future audits. The audit adjustments resulted in lower earnings in our foreign subsidiaries which reduced the taxability of dividends that were previously repatriated from such subsidiaries. Due to this reduction in taxable dividends, the conclusion of the fiscal 2005 to 2007 income tax audit resulted in a net refund of $8.0 million, excluding interest.
	In October 2014, the United Kingdom’s (UK’s) tax authority concluded the examination of our fiscal 2009 to 2012 UK income tax returns. We recorded a $1.0 million income tax benefit for the net impact of the audit adjustments and related release of unrecognized tax benefits.
	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Balance at beginning of period	$	235.9		$	189.6
	Additions based on tax positions related to the current year		19.1			20.9
	Additions for tax positions of prior years		101.5			1.8
	Decreases for tax positions of prior years		(23.5	)		(4.5	)
	Settlements		(57.6	)		-
	Balance at end of period	$	275.4		$	207.8
	As of January 23, 2015, we had $275.4 million of gross unrecognized tax benefits, of which $220.2 million has been recorded in other long-term liabilities. Unrecognized tax benefits of $169.7 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 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 is currently auditing our fiscal 2008 to 2010 income tax returns. We expect the IRS examination team to complete their field audit within the next twelve months. However, the resolution of the fiscal 2008 to 2010 income tax return audits may likely occur beyond the next twelve months should we choose to appeal the IRS examination team’s audit findings.
	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. The Danish High Court hearing has not yet occurred.
	Our Dutch subsidiaries have concluded an advanced transfer pricing agreement with the Dutch tax authorities that will be effective from May 1, 2015 to April 30, 2020. The advanced transfer pricing agreement has terms similar to our current agreement which is set to expire on April 30, 2015.

Net_Income_per_Share

Net Income per Share	9 Months Ended
	Jan. 23, 2015
Earnings Per Share [Abstract]
Net Income per Share	13. 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				Nine Months Ended
		January 23,		January 24,		January 23,		January 24,
		2015		2014		2015		2014
	Numerator:
	Net income	$	176.8	$	192.1	$	425	$	440.5
	Denominator:
	Shares used in basic computation		311.6		339.4		317.8		343.7
	Dilutive impact of employee equity award plans		5.5		6.8		5.5		7
	Dilutive impact of assumed conversion of Convertible Notes		—		—		—		0.7
	Dilutive impact of warrants		—		—		—		0.3
	Shares used in diluted computation		317.1		346.2		323.3		351.7
	Net Income per Share:
	Basic	$	0.57	$	0.57	$	1.34	$	1.28
	Diluted	$	0.56	$	0.55	$	1.31	$	1.25
	The following potential weighted-average shares of common stock have been excluded from the diluted net income per share calculations, as their effect would have been anti-dilutive (in millions):
		Three Months Ended				Nine Months Ended
		January 23,		January 24,		January 23,		January 24,
		2015		2014		2015		2014
	Employee equity award plans		6.8		5.7		7.5		6.5

Segment_Geographic_and_Signifi

Segment, Geographic, and Significant Customer Information	9 Months Ended
	Jan. 23, 2015
Segment Reporting [Abstract]
Segment, Geographic, and Significant Customer Information	14. 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						Nine Months Ended
		January 23,			January 24,			January 23,			January 24,
		2015			2014			2015			2014
	Americas (United States, Canada and Latin America)	$	836.9		$	838.7		$	2,574.20		$	2,596.40
	Europe, Middle East and Africa		509.2			546.9			1,391.70			1,439.90
	Asia Pacific		205.2			224.4			617.1			639.8
	Net revenues	$	1,551.30		$	1,610.00		$	4,583.00		$	4,676.10
	Americas revenues consist of sales to Americas commercial and U.S. public sector markets. Sales to customers inside the United States were $747.2 million and $734.6 million during the three months ended January 23, 2015 and January 24, 2014, respectively, and were $2,309.8 million and $2,308.1 million during the nine months ended January 23, 2015 and January 24, 2014, respectively.
	The majority of our assets, excluding cash, cash equivalents, restricted cash, investments and accounts receivable, were attributable to our domestic operations. The following table presents cash, cash equivalents, restricted cash and investments held in the United States and internationally in various foreign subsidiaries (in millions):
		January 23,			April 25,
		2015			2014
	United States	$	671.1		$	688.5
	International		4,594.50			4,360.90
	Total	$	5,265.60		$	5,049.40
	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):
		January 23,			April 25,
		2015			2014
	United States	$	954.9		$	1,021.40
	International		95.8			87.4
	Total	$	1,050.70		$	1,108.80
	The following customers, each of which is a distributor, accounted for 10% or more of our net revenues:
		Three Months Ended						Nine Months Ended
		January 23,			January 24,			January 23,			January 24,
		2015			2014			2015			2014
	Arrow Electronics, Inc.		22	%		20	%		23	%		21	%
	Avnet, Inc.		16	%		15	%		16	%		16	%
	The following customers accounted for 10% or more of net accounts receivable:
		January 23,			April 25,
		2015			2014
	Arrow Electronics, Inc.		12	%		14	%
	Avnet, Inc.	N/A				16	%
	__________________
	N/A - Not Applicable

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Jan. 23, 2015
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	15. Commitments and Contingencies
	Operating Lease Commitments
	We lease various equipment, vehicles and office space in the U.S. and internationally. As of January 23, 2015, future annual minimum lease payments under non-cancelable operating leases with an initial term in excess of one year totaled $203.2 million.
	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. We establish accruals for estimated losses on purchased components to the extent we believe it is probable that such components will not be utilized in future operations. To the extent that product forecasts are not achieved, our commitments and associated accruals may change. As of January 23, 2015, we had $274.6 million in non-cancelable purchase commitments with our contract manufacturers and component suppliers. In addition, we recorded a liability for firm, non-cancelable and unconditional purchase commitments with contract manufacturers for quantities in excess of our future demand forecasts through a charge to cost of product revenues. As of January 23, 2015 and April 25, 2014, such liability amounted to $9.4 million and $11.5 million, respectively, and is included in other current liabilities in our condensed consolidated balance sheets.
	In addition to 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 January 23, 2015, we had $68.8 million in capital purchase commitments and $192.2 million in other purchase commitments.
	Product Warranties
	We generally provide customers a warranty on software of ninety days and a warranty on hardware of three years. 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						Nine Months Ended
		January 23,			January 24,			January 23,			January 24,
		2015			2014			2015			2014
	Balance at beginning of period	$	96.6		$	116		$	110		$	117.2
	Expense accrued during the period		3.1			21.1			21.9			59.4
	Warranty costs incurred		(12.2	)		(20.0	)		(44.4	)		(59.5	)
	Balance at end of period	$	87.5		$	117.1		$	87.5		$	117.1
		January 23,			April 25,
		2015			2014
	Other current liabilities	$	59.5		$	73
	Other long-term liabilities		28			37
	Total	$	87.5		$	110
	Financing Guarantees
	Some of our customers have entered into recourse and non-recourse financing leasing arrangements using third-party financing companies, and in some situations, we enter into customer financing arrangements for our products and services that are contemporaneously sold on a recourse or non-recourse basis to third-party financing companies. 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. Under the terms of the non-recourse leases, we do not have any continuing obligations or liabilities to the third-party financing companies. 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 January 23, 2015 and April 25, 2014, the aggregate amount by which such contingencies exceeded the associated deferred revenue was not significant. To date, we have not experienced material losses under our lease financing programs or other financing arrangements.
	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. No accrual has been recorded as of January 23, 2015 related to such matters as they are not probable and/or reasonably estimable.

Description_of_Business_and_Si1

Description of Business and Significant Accounting Policies (Policies)	9 Months Ended
	Jan. 23, 2015
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. Each quarter of fiscal 2015 and 2014 is a 13-week period.
	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 and in accordance with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. 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 25, 2014 contained in our Annual Report on Form 10-K filed with the Securities and Exchange Commission on June 17, 2014. The results of operations for the three and nine months ended January 23, 2015 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 benefit accruals; stock-based compensation; loss contingencies; investment impairments; 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 nine months ended January 23, 2015, as compared to the significant accounting policies described in our Annual Report on Form 10-K for the fiscal year ended April 25, 2014.
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. We defer revenue associated with these advance payments until the related refund rights expire and we perform the services.

Statements_of_Cash_Flows_Addit1

Statements of Cash Flows Additional Information (Tables)	9 Months Ended
	Jan. 23, 2015
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):
		Nine Months Ended
		January 23,		January 24,
		2015		2014
	Non-cash Investing Activities:
	Capital expenditures incurred but not paid	$	12.2	$	25.7
	Acquisition of software through long-term financing	$	12.3	$	11.4
	Supplemental Cash Flow Information:
	Income taxes paid, net of refunds	$	89	$	39.5
	Interest paid	$	32.5	$	35

Business_Combinations_Tables

Business Combinations (Tables)	9 Months Ended
	Jan. 23, 2015
Business Combinations [Abstract]
Preliminary Fair Values of Assets Acquired and Liabilities Assumed	Following are the preliminary fair values of assets acquired and liabilities assumed as of the closing date (in millions):
	Prepaid expenses and other current assets	$	2.7
	Finite-lived intangible assets		31.8
	Goodwill		43.2
	Deferred income taxes		6.9
	Other non-current assets		1.1
	Total assets acquired		85.7
	Deferred revenues		(1.1	)
	Total purchase price	$	84.6

Goodwill_and_Purchased_Intangi1

Goodwill and Purchased Intangible Assets, Net (Tables)	9 Months Ended
	Jan. 23, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Goodwill Activity	Goodwill activity is summarized as follows (in millions):
	Balance as of April 25, 2014	$	988.1
	Goodwill acquired		43.2
	Balance as of January 23, 2015	$	1,031.30
Purchased Intangible Assets, Net	Purchased intangible assets, net are summarized below (in millions):
		January 23, 2015							25-Apr-14
		Gross		Accumulated			Net		Gross		Accumulated			Net
		Assets		Amortization			Assets		Assets		Amortization			Assets
	Developed technology	$	312.4	$	(210.0	)	$	102.4	$	283	$	(162.6	)	$	120.4
	Customer contracts/relationships		5		(2.5	)		2.5		9.6		(9.0	)		0.6
	Trademarks and trade names		2.9		(2.8	)		0.1		2.9		(2.4	)		0.5
	Covenants not to compete		—		—			—		1.6		(1.6	)		—
	Total purchased intangible assets	$	320.3	$	(215.3	)	$	105	$	297.1	$	(175.6	)	$	121.5
Amortization Expense for Purchased Intangible Assets	Amortization expense for purchased intangible assets is summarized below (in millions):
		Three Months Ended					Nine Months Ended				Statement of
		January 23,		January 24,			January 23,		January 24,		Operations
		2015		2014			2015		2014		Classifications
	Developed technology	$	18.9	$	14.2		$	47.4	$	42.8	Cost of  revenues
	Customer contracts/relationships		0.2		0.3			0.4		1	Operating expenses
	Trademarks and trade names		0.1		0.1			0.4		0.3	Operating expenses
	Covenants not to compete		—		0.1			—		0.4	Operating expenses
		$	19.2	$	14.7		$	48.2	$	44.5
Future Amortization Expense Related to Purchased Intangible Assets	As of January 23, 2015, future amortization expense related to purchased intangible assets is as follows (in millions):
	Fiscal Year	Amount
	Remainder of 2015	$	15.5
	2016		58.4
	2017		13.9
	2018		9.4
	2019		5.2
	Thereafter		2.6
	Total	$	105

Balance_Sheet_Details_Tables

Balance Sheet Details (Tables)	9 Months Ended
	Jan. 23, 2015
Statement Of Financial Position [Abstract]
Cash and Cash Equivalents	Cash and cash equivalents (in millions):
		January 23,			April 25,
		2015			2014
	Cash	$	2,266.70		$	2,174.00
	Cash equivalents		273			117
	Cash and cash equivalents	$	2,539.70		$	2,291.00
Inventories	Inventories (in millions):
		January 23,			April 25,
		2015			2014
	Purchased components	$	25.9		$	17.6
	Finished goods		91.9			104.8
	Inventories	$	117.8		$	122.4
Other Current Assets	Other current assets (in millions):
		January 23,			April 25,
		2015			2014
	Prepaid expenses and other current assets	$	266		$	219.4
	Deferred tax assets		252			270.3
	Other current assets	$	518		$	489.7
Property and Equipment, Net	Property and equipment, net (in millions):
		January 23,			April 25,
		2015			2014
	Land	$	265.5		$	265.7
	Buildings and building improvements		605.5			541.7
	Leasehold improvements		104.8			102.9
	Computers, production, engineering and other equipment		758.4			753.8
	Software		372.3			369.1
	Furniture and fixtures		85.5			86.4
	Construction-in-progress		27.7			72.9
			2,219.70			2,192.50
	Accumulated depreciation and amortization		(1,169.0	)		(1,083.7	)
	Property and equipment, net	$	1,050.70		$	1,108.80
Software, Net Book Value	The net book value of software, which includes capitalized internal-use software development costs, is summarized below (in millions):
		January 23,			April 25,
		2015			2014
	Software	$	71		$	103.5
Other Non-Current Assets	Other non-current assets (in millions):
		January 23,			April 25,
		2015			2014
	Auction rate securities	$	—		$	36
	Deferred tax assets		250.6			245
	Other assets		242.5			248.5
	Other non-current assets	$	493.1		$	529.5
Deferred Revenue	Short-term and long-term deferred revenue (in millions):
		January 23,			April 25,
		2015			2014
	Product	$	24.2		$	23.4
	Software entitlements and maintenance and service		3,085.50			3,076.80
	Total	$	3,109.70		$	3,100.20
	Reported as:
		January 23,			April 25,
		2015			2014
	Short-term	$	1,679.40		$	1,653.80
	Long-term		1,430.30			1,446.40
	Total	$	3,109.70		$	3,100.20

Financial_Instruments_and_Fair1

Financial Instruments and Fair Value Measurements (Tables)	9 Months Ended
	Jan. 23, 2015
Investments Debt And Equity Securities [Abstract]
Summary of Investments	The following is a summary of our investments (in millions):
		January 23, 2015											25-Apr-14
					Gross Unrealized										Gross Unrealized
		Cost or			Gains		Losses			Estimated			Cost or		Gains		Losses			Estimated
		Amortized								Fair Value			Amortized							Fair Value
		Cost											Cost
	Corporate bonds	$	2,083.90		$	6.6	$	(0.4	)		2,090.10		$	2,142.30	$	10.5	$	(0.5	)	$	2,152.30
	U.S. Treasury and government debt		521.4			1.4		(0.1	)		522.7			263.4		0.3		(0.1	)		263.6
	securities
	Commercial paper		15			—		—			15			168.4		—		—			168.4
	Certificates of deposit		358			—		—			358			245		—		—			245
	Auction rate securities		—			—		—			—			36.9		—		(0.9	)		36
	Equity funds		30.4			—		—			30.4			32.7		—		—			32.7
	Total debt and equity securities	$	3,008.70		$	8	$	(0.5	)	$	3,016.20		$	2,888.70	$	10.8	$	(1.5	)	$	2,898.00
Contractual Maturities of Debt Investments	The following table presents the contractual maturities of our debt investments as of January 23, 2015 (in millions):
		Amortized Cost			Fair Value
	Due in one year or less	$	1,479.80		$	1,482.00
	Due in two through five years		1,498.50			1,503.80
		$	2,978.30		$	2,985.80
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):
		January 23, 2015
					Fair Value Measurements at Reporting Date Using
					Quoted Prices		Significant
					in Active Markets		Other
					for Identical Assets		Observable Inputs
		Total			(Level 1)		(Level 2)
	Assets
	Corporate bonds	$	2,090.10		$	—	$	2,090.10
	U.S. Treasury and government debt securities		522.7			140.4		382.3
	Commercial paper		15			—		15
	Certificates of deposit		358			—		358
	Equity funds		30.4			30.4		—
	Foreign currency contracts		21.5			—		21.5
	Total	$	3,037.70		$	170.8	$	2,866.90
	Liabilities
	Foreign currency contracts	$	(6.9	)	$	—	$	(6.9	)
Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table summarizes the balance sheet classifications of our financial assets and liabilities measured at fair value on a recurring basis (in millions):
		January 23, 2015
					Fair Value Measurements at Reporting Date Using
					Quoted Prices		Significant
					in Active Markets		Other
					for Identical Assets		Observable Inputs
		Total			(Level 1)		(Level 2)
	Assets
	Cash equivalents	$	273		$	—	$	273
	Short-term investments		2,712.80			140.4		2,572.40
	Other current assets		24.4			2.9		21.5
	Other non-current assets		27.5			27.5		—
	Total	$	3,037.70		$	170.8	$	2,866.90
	Liabilities
	Other current liabilities	$	(6.9	)	$	—	$	(6.9	)
Reconciliation of Beginning and Ending Balance of Level 3 Auction Rate Securities Measured at Fair Value on Recurring Basis	The table below provides a reconciliation of the beginning and ending balance of our Level 3 ARSs (in millions).
		Three Months Ended					Nine Months Ended
		January 23,			January 24,		January 23,			January 24,
		2015			2014		2015			2014
	Balance at beginning of period	$	23		$	39.5	$	36		$	42
	Total unrealized gains, net included in other comprehensive		0.3			0.9		0.9			0.7
	income (loss)
	Total realized gains included in earnings		—			—		—			0.7
	Sales		—			—		(10.0	)		(3.0	)
	Settlements		(23.3	)		—		(26.9	)		—
	Balance at end of period	$	—		$	40.4	$	—		$	40.4

Financing_Arrangements_Tables

Financing Arrangements (Tables)	9 Months Ended
	Jan. 23, 2015
Debt Disclosure [Abstract]
Carrying Value of Long-Term Debt	The following table summarizes the carrying value of our long-term debt (in millions):
		23-Jan-15						25-Apr-14
					Effective						Effective
		Amount			Interest Rate			Amount			Interest Rate
	2.00% Senior Notes Due 2017	$	750			2.25	%	$	750			2.25	%
	3.375% Senior Notes Due 2021		500			3.54	%		—		N/A
	3.25% Senior Notes Due 2022		250			3.43	%		250			3.43	%
	Total principal amount		1,500.00						1,000.00
	Less: Unamortized discount		(5.3	)					(4.5	)
	Total long-term debt	$	1,494.70					$	995.5
	__________________
	N/A - Not Applicable
Future Principal Debt Maturities	As of January 23, 2015, our aggregate future principal debt maturities are as follows (in millions):
	Fiscal Year				Amount
	2018				$	750
	Thereafter					750
	Total				$	1,500.00
Amounts Due Under Other Long-Term Financing Arrangements	The following presents the amounts due under other long-term financing arrangements (in millions):
		January 23,			April 25,
		2015			2014
	Other long-term financing arrangements	$	17.6		$	13.1
	Less:  current portion		(9.4	)		(6.6	)
	Non-current portion of other long-term financing arrangements	$	8.2		$	6.5

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	9 Months Ended
	Jan. 23, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Activity Related to Stock Options	The following table summarizes activity related to our stock options (in millions, except for exercise price and contractual term):
		Number			Weighted-			Weighted-			Aggregate
		of Shares			Average			Average			Intrinsic
					Exercise			Remaining			Value
					Price			Contractual Term
								(Years)
	Outstanding as of April 25, 2014		14.5		$	34.1
	Granted		2.2		$	36.64
	Exercised		(4.0	)	$	25.33
	Forfeited and expired		(0.4	)	$	43.4
	Outstanding as of January 23, 2015		12.3		$	37.03			3.85		$	62.6
	Vested and expected to vest as of January 23, 2015		11.8		$	37.05			3.76			61
	Exercisable as of January 23, 2015		8.1		$	37.23			2.91			48.3
Additional Information Related to Stock Options	Additional information related to our stock options is summarized below (in millions):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Intrinsic value of exercises	$	61.2		$	81.3
	Proceeds received from exercises	$	99.9		$	147.7
	Fair value of options vested	$	26.3		$	36
Activity Related to Restricted Stock Units (RSUs)	The following table summarizes activity related to our restricted stock units (RSUs) (in millions, except for fair value):
		Number of			Weighted-
		Shares			Average
					Grant Date
					Fair Value
	Outstanding as of April 25, 2014		13.2		$	38.35
	Granted		6.3			35.8
	Vested		(4.3	)		40.05
	Forfeited		(1.3	)		37.71
	Outstanding as of January 23, 2015		13.9			36.73
Number and Value of the Shares Netted for Employee Taxes	The number and value of the shares netted for employee taxes are summarized in the table below (in millions):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Shares withheld for taxes		1.4			1.3
	Fair value of shares withheld	$	51.4		$	51.4
Schedule of Employee Stock Purchase Plan (ESPP) Disclosures	The following table summarizes activity related to the purchase rights issued under the Employee Stock Purchase Plan (ESPP) (in millions):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Shares issued under the ESPP		3.4			3.8
	Proceeds from issuance of shares	$	97.1		$	95.5
Stock-Based Compensation Expense	Stock-based compensation expense is included in the condensed consolidated statements of operations as follows (in millions):
		Three Months Ended						Nine Months Ended
		January 23,			January 24,			January 23,			January 24,
		2015			2014			2015			2014
	Cost of product revenues	$	1.4		$	1.5		$	4.5		$	4.2
	Cost of service revenues		4			4.6			12.4			12.8
	Sales and marketing		29.6			33			87			94.6
	Research and development		21.9			23.6			64.6			66.6
	General and administrative		9.1			9.2			27.6			27.6
	Total stock-based compensation expense	$	66		$	71.9		$	196.1		$	205.8
Income Tax Effects Associated with Employee Stock Transactions	Total income tax benefit associated with employee stock transactions and recognized in stockholders’ equity were as follows (in millions):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Income tax benefit associated with employee stock transactions	$	54		$	22.5
Summary of Activities Related to Stock Repurchase Program	The following table summarizes activity related to this program for the nine months ended January 23, 2015 (in millions, except per share information):
	Number of shares repurchased		23.1
	Average price per share	$	39.73
	Aggregate purchase price	$	918.9
	Remaining authorization at end of period	$	205.9
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):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Dividends per share declared and paid	$	0.495		$	0.45
	Dividend payments allocated to additional paid-in capital	$	52.1		$	50.4
	Dividend payments allocated to retained earnings	$	104.8		$	102.7
Reconciliation of Retained Earnings	A reconciliation of retained earnings for the nine months ended January 23, 2015 is as follows (in millions):
	Balance as of April 25, 2014	$	1.1
	Net income		425
	Repurchases of common stock		(251.5	)
	Dividends		(104.8	)
	Balance as of January 23, 2015	$	69.8
Accumulated Other Comprehensive Income (Loss) by Component Net of Tax	Changes in accumulated other comprehensive income (AOCI) by component, net of tax, for the nine months ended January 23, 2015 are summarized below (in millions):
		Foreign			Defined			Unrealized			Unrealized			Total
		Currency			Benefit			Gains on			Gains
		Translation			Obligation			Available-			(Losses) on
		Adjustments			Adjustments			for-Sale			Derivatives
								Securities			Instruments
	Balance as of April 25, 2014	$	5.5		$	(4.8	)	$	8.9		$	(0.5	)	$	9.1
	Other comprehensive income (loss) (OCI)		(26.9	)		1.1			(1.4	)		13.1			(14.1	)
	before reclassifications, net of tax
	Amounts reclassified from AOCI, net of tax		—			0.3			(0.1	)		(9.5	)		(9.3	)
	Net OCI		(26.9	)		1.4			(1.5	)		3.6			(23.4	)
	Balance as of January 23, 2015	$	(21.4	)	$	(3.4	)	$	7.4		$	3.1		$	(14.3	)
Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss)	The amounts reclassified out of AOCI are as follows (in millions):
		Three Months Ended						Nine Months Ended
		January 23,			January 24,			January 23,			January 24,
		2015			2014			2015			2014
		Amounts Reclassified from AOCI						Amounts Reclassified from AOCI						Statements of
														Operations Location
	Recognized losses on defined benefit	$	0.1		$	—		$	0.3		$	—		Operating expenses
	obligations
	Realized gains on available-for-sale		(0.3	)		—			(0.1	)		(1.1	)	Other income (expense), net
	securities
	Realized (gains) losses on cash flow hedges		(15.7	)		(0.2	)		(9.5	)		1.2		Net revenues
	Total reclassifications	$	(15.9	)	$	(0.2	)	$	(9.3	)	$	0.1

Derivatives_and_Hedging_Activi1

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Jan. 23, 2015
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):
		January 23,		April 25,
		2015		2014
	Cash Flow Hedges
	Forward contracts purchased	$	159.1	$	122.6
	Balance Sheet Contracts
	Forward contracts sold		183.2		155.5
	Forward contracts purchased		304.7		389.9
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				Nine Months Ended
		January 23,		January 24,		January 23,		January 24,
		2015		2014		2015		2014
		Gain Recognized into Income				Gain Recognized into Income
	Foreign exchange contracts	$	11	$	1	$	9.4	$	1.8

Restructuring_and_Other_Charge1

Restructuring and Other Charges (Tables)	9 Months Ended
	Jan. 23, 2015
Restructuring And Related Activities [Abstract]
Activities Related to Restructuring Reserves	Activities related to these plans are summarized as follows (in millions):
		Nine Months Ended			Nine Months Ended
		January 23, 2015			January 24, 2014
		(March 2014 Plan)			(May 2013 Plan)
	Balance at beginning of period	$	26.5		$	—
	Net charges		—			49.5
	Cash payments		(26.5	)		(48.9	)
	Balance at end of period	$	—		$	0.6

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Jan. 23, 2015
Income Tax Disclosure [Abstract]
Effective Tax Rates	Our effective tax rates for the periods presented were as follows:
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Effective tax rates		22.5	%		14.3	%
Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
		Nine Months Ended
		January 23,			January 24,
		2015			2014
	Balance at beginning of period	$	235.9		$	189.6
	Additions based on tax positions related to the current year		19.1			20.9
	Additions for tax positions of prior years		101.5			1.8
	Decreases for tax positions of prior years		(23.5	)		(4.5	)
	Settlements		(57.6	)		-
	Balance at end of period	$	275.4		$	207.8

Net_Income_per_Share_Tables

Net Income per Share (Tables)	9 Months Ended
	Jan. 23, 2015
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				Nine Months Ended
		January 23,		January 24,		January 23,		January 24,
		2015		2014		2015		2014
	Numerator:
	Net income	$	176.8	$	192.1	$	425	$	440.5
	Denominator:
	Shares used in basic computation		311.6		339.4		317.8		343.7
	Dilutive impact of employee equity award plans		5.5		6.8		5.5		7
	Dilutive impact of assumed conversion of Convertible Notes		—		—		—		0.7
	Dilutive impact of warrants		—		—		—		0.3
	Shares used in diluted computation		317.1		346.2		323.3		351.7
	Net Income per Share:
	Basic	$	0.57	$	0.57	$	1.34	$	1.28
	Diluted	$	0.56	$	0.55	$	1.31	$	1.25
Anti-Dilutive Shares Excluded from the Calculation of Net Income Per Share	The following potential weighted-average shares of common stock have been excluded from the diluted net income per share calculations, as their effect would have been anti-dilutive (in millions):
		Three Months Ended				Nine Months Ended
		January 23,		January 24,		January 23,		January 24,
		2015		2014		2015		2014
	Employee equity award plans		6.8		5.7		7.5		6.5

Segment_Geographic_and_Signifi1

Segment, Geographic, and Significant Customer Information (Tables)	9 Months Ended
	Jan. 23, 2015
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						Nine Months Ended
		January 23,			January 24,			January 23,			January 24,
		2015			2014			2015			2014
	Americas (United States, Canada and Latin America)	$	836.9		$	838.7		$	2,574.20		$	2,596.40
	Europe, Middle East and Africa		509.2			546.9			1,391.70			1,439.90
	Asia Pacific		205.2			224.4			617.1			639.8
	Net revenues	$	1,551.30		$	1,610.00		$	4,583.00		$	4,676.10
Schedule of Total Cash, Cash Equivalents, Restricted Cash and Investments	The following table presents cash, cash equivalents, restricted cash and investments held in the United States and internationally in various foreign subsidiaries (in millions):
		January 23,			April 25,
		2015			2014
	United States	$	671.1		$	688.5
	International		4,594.50			4,360.90
	Total	$	5,265.60		$	5,049.40
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):
		January 23,			April 25,
		2015			2014
	United States	$	954.9		$	1,021.40
	International		95.8			87.4
	Total	$	1,050.70		$	1,108.80
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						Nine Months Ended
		January 23,			January 24,			January 23,			January 24,
		2015			2014			2015			2014
	Arrow Electronics, Inc.		22	%		20	%		23	%		21	%
	Avnet, Inc.		16	%		15	%		16	%		16	%
Schedule of Net Accounts Receivable from Significant Customers	The following customers accounted for 10% or more of net accounts receivable:
		January 23,			April 25,
		2015			2014
	Arrow Electronics, Inc.		12	%		14	%
	Avnet, Inc.	N/A				16	%
	__________________
	N/A - Not Applicable

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Jan. 23, 2015
Commitments And Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liabilities and Balances Reported in Condensed Consolidated Balance Sheets	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						Nine Months Ended
		January 23,			January 24,			January 23,			January 24,
		2015			2014			2015			2014
	Balance at beginning of period	$	96.6		$	116		$	110		$	117.2
	Expense accrued during the period		3.1			21.1			21.9			59.4
	Warranty costs incurred		(12.2	)		(20.0	)		(44.4	)		(59.5	)
	Balance at end of period	$	87.5		$	117.1		$	87.5		$	117.1
		January 23,			April 25,
		2015			2014
	Other current liabilities	$	59.5		$	73
	Other long-term liabilities		28			37
	Total	$	87.5		$	110

Statements_of_Cash_Flows_Addit2

Statements of Cash Flows Additional Information - Supplemental Cash Flows and Non Cash Investing Activities (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014
Non-cash Investing Activities:
Capital expenditures incurred but not paid	$12.20	$25.70
Acquisition of software through long-term financing	12.3	11.4
Supplemental Cash Flow Information:
Income taxes paid, net of refunds	89	39.5
Interest paid	$32.50	$35

Business_Combinations_Addition

Business Combinations - Additional Information (Detail) (Fiscal 2015 Acquisitions, USD $)	0 Months Ended
In Millions, unless otherwise specified	Oct. 27, 2014
SteelStore Product Line
Business Acquisition [Line Items]
Business acquisition cash paid	$79.10
Privately Held Software Developer
Business Acquisition [Line Items]
Business acquisition cash paid	$5.50

Business_Combinations_Prelimin

Business Combinations - Preliminary Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Business Acquisition [Line Items]
Goodwill	$1,031.30	$988.10
Fiscal 2015 Acquisitions
Business Acquisition [Line Items]
Prepaid expenses and other current assets	2.7
Finite-lived intangible assets	31.8
Goodwill	43.2
Deferred income taxes	6.9
Other non-current assets	1.1
Total assets acquired	85.7
Deferred revenues	-1.1
Total purchase price	$84.60

Goodwill_and_Purchased_Intangi2

Goodwill and Purchased Intangible Assets, Net - Schedule of Goodwill Activity (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning balance	$988.10
Goodwill acquired	43.2
Ending balance	$1,031.30

Goodwill_and_Purchased_Intangi3

Goodwill and Purchased Intangible Assets, Net - Purchased Intangible Assets, Net (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Acquired Finite Lived Intangible Assets [Line Items]
Gross Assets	$320.30	$297.10
Accumulated Amortization	-215.3	-175.6
Net Assets	105	121.5
Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Gross Assets	312.4	283
Accumulated Amortization	-210	-162.6
Net Assets	102.4	120.4
Customer Contracts/Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Gross Assets	5	9.6
Accumulated Amortization	-2.5	-9
Net Assets	2.5	0.6
Trademarks and Trade Names
Acquired Finite Lived Intangible Assets [Line Items]
Gross Assets	2.9	2.9
Accumulated Amortization	-2.8	-2.4
Net Assets	0.1	0.5
Covenants not to Compete
Acquired Finite Lived Intangible Assets [Line Items]
Gross Assets	0	1.6
Accumulated Amortization	0	-1.6
Net Assets	$0	$0

Goodwill_and_Purchased_Intangi4

Goodwill and Purchased Intangible Assets, Net - Amortization Expense for Purchased Intangible Assets (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	$19.20	$14.70	$48.20	$44.50
Cost of revenues | Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	18.9	14.2	47.4	42.8
Operating expenses | Customer Contracts/Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	0.2	0.3	0.4	1
Operating expenses | Trademarks and Trade Names
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	0.1	0.1	0.4	0.3
Operating expenses | Covenants not to Compete
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	$0	$0.10	$0	$0.40

Goodwill_and_Purchased_Intangi5

Goodwill and Purchased Intangible Assets, Net - Future Amortization Expense Related to Purchased Intangible Assets (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]
Remainder of 2015	$15.50
2016	58.4
2017	13.9
2018	9.4
2019	5.2
Thereafter	2.6
Net Assets	$105	$121.50

Balance_Sheet_Details_Cash_and

Balance Sheet Details - Cash and Cash Equivalents (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014	Jan. 24, 2014	Apr. 26, 2013
In Millions, unless otherwise specified
Cash And Cash Equivalents [Abstract]
Cash	$2,266.70	$2,174
Cash equivalents	273	117
Cash and cash equivalents	$2,539.70	$2,291	$2,152.70	$3,277.10

Balance_Sheet_Details_Inventor

Balance Sheet Details - Inventories (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]
Purchased components	$25.90	$17.60
Finished goods	91.9	104.8
Inventories	$117.80	$122.40

Balance_Sheet_Details_Other_Cu

Balance Sheet Details - Other Current Assets (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Prepaid expenses and other current assets	$266	$219.40
Deferred tax assets	252	270.3
Other current assets	$518	$489.70

Balance_Sheet_Details_Property

Balance Sheet Details - Property and Equipment Net (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Property Plant And Equipment [Line Items]
Property and equipment, gross	$2,219.70	$2,192.50
Accumulated depreciation and amortization	-1,169	-1,083.70
Property and equipment, net	1,050.70	1,108.80
Land
Property Plant And Equipment [Line Items]
Property and equipment, gross	265.5	265.7
Buildings and building improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	605.5	541.7
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	104.8	102.9
Computer, production, engineering and other equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	758.4	753.8
Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	372.3	369.1
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	85.5	86.4
Construction-in-progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$27.70	$72.90

Balance_Sheet_Details_Software

Balance Sheet Details - Software Net Book Value (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Property Plant And Equipment [Abstract]
Software	$71	$103.50

Balance_Sheet_Details_Other_No

Balance Sheet Details - Other Non-Current Assets (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Other Assets Noncurrent Disclosure [Abstract]
Auction rate securities	$0	$36
Deferred tax assets	250.6	245
Other assets	242.5	248.5
Other non-current assets	$493.10	$529.50

Balance_Sheet_Details_Deferred

Balance Sheet Details - Deferred Revenue (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Deferred Revenue Arrangement [Line Items]
Short-term	$1,679.40	$1,653.80
Long-term	1,430.30	1,446.40
Short-term and long-term deferred revenue, Total	3,109.70	3,100.20
Product
Deferred Revenue Arrangement [Line Items]
Short-term and long-term deferred revenue, Total	24.2	23.4
Software entitlements and maintenance and service
Deferred Revenue Arrangement [Line Items]
Short-term and long-term deferred revenue, Total	$3,085.50	$3,076.80

Financial_Instruments_and_Fair2

Financial Instruments and Fair Value Measurements - Summary of Investments (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	$3,008.70	$2,888.70
Gross unrealized gains	8	10.8
Gross unrealized losses	-0.5	-1.5
Estimated fair value	3,016.20	2,898
Corporate Bonds
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	2,083.90	2,142.30
Gross unrealized gains	6.6	10.5
Gross unrealized losses	-0.4	-0.5
Estimated fair value	2,090.10	2,152.30
U.S. Treasury and Government Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	521.4	263.4
Gross unrealized gains	1.4	0.3
Gross unrealized losses	-0.1	-0.1
Estimated fair value	522.7	263.6
Commercial Paper
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	15	168.4
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	15	168.4
Certificates of Deposit
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	358	245
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	358	245
Auction Rate Securities
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	0	36.9
Gross unrealized gains	0	0
Gross unrealized losses	0	-0.9
Estimated fair value	0	36
Equity Funds
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	30.4	32.7
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	$30.40	$32.70

Financial_Instruments_and_Fair3

Financial Instruments and Fair Value Measurements - Contractual Maturities of Debt Investments (Detail) (USD $)	Jan. 23, 2015
In Millions, unless otherwise specified
Investments Debt And Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$1,479.80
Due in two through five years, Amortized Cost	1,498.50
Total, Amortized Cost	2,978.30
Due in one year or less, Estimated Fair Value	1,482
Due in two through five years, Estimated Fair Value	1,503.80
Total, Estimated Fair Value	$2,985.80

Financial_Instruments_and_Fair4

Financial Instruments and Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Jan. 23, 2015
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$3,037.70
Foreign currency contracts	21.5
Foreign currency contracts	-6.9
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	170.8
Foreign currency contracts	0
Foreign currency contracts	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2,866.90
Foreign currency contracts	21.5
Foreign currency contracts	-6.9
Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2,090.10
Corporate Bonds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0
Corporate Bonds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2,090.10
U.S. Treasury and Government Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	522.7
U.S. Treasury and Government Debt Securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	140.4
U.S. Treasury and Government Debt Securities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	382.3
Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	15
Commercial Paper | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0
Commercial Paper | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	15
Certificates of Deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	358
Certificates of Deposit | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0
Certificates of Deposit | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	358
Equity Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	30.4
Equity Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	30.4
Equity Funds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$0

Financial_Instruments_and_Fair5

Financial Instruments and Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	$273
Short-term investments	2,712.80	2,712.30
Assets	3,037.70
Other current liabilities	-6.9
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0
Short-term investments	140.4
Assets	170.8
Other current liabilities	0
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	273
Short-term investments	2,572.40
Assets	2,866.90
Other current liabilities	-6.9
Other Current Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	24.4
Other Current Assets | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	2.9
Other Current Assets | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	21.5
Other Noncurrent Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	27.5
Other Noncurrent Assets | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	27.5
Other Noncurrent Assets | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	$0

Financial_Instruments_and_Fair6

Financial Instruments and Fair Value Measurements - Reconciliation of Beginning and Ending Balance of Level Three Auction Rate Securities Measured at Fair Value On Recurring Basis (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Fair Value Disclosures [Abstract]
Balance at beginning of period	$23	$39.50	$36	$42
Total unrealized gains, net included in other comprehensive income (loss)	0.3	0.9	0.9	0.7
Total realized gains included in earnings	0	0	0	0.7
Sales	0	0	-10	-3
Settlements	-23.3	0	-26.9	0
Balance at end of period	$0	$40.40	$0	$40.40

Financial_Instruments_and_Fair7

Financial Instruments and Fair Value Measurements - Additional Information (Detail) (Significant Other Observable Inputs (Level 2), Senior Notes, USD $)	Jan. 23, 2015
In Millions, unless otherwise specified
Significant Other Observable Inputs (Level 2) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	$1,521.30

Financing_Arrangements_Carryin

Financing Arrangements - Carrying Value of Long-Term Debt (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Debt Instrument [Line Items]
Total principal amount	$1,500	$1,000
Less: Unamortized discount	-5.3	-4.5
Total long-term debt	1,494.70	995.5
Senior Notes Due 2017
Debt Instrument [Line Items]
Total principal amount	750	750
Debt Instrument, Effective Interest Rate	2.25%	2.25%
Senior Notes Due 2021
Debt Instrument [Line Items]
Total principal amount	500	0
Debt Instrument, Effective Interest Rate	3.54%
Senior Notes Due 2022
Debt Instrument [Line Items]
Total principal amount	$250	$250
Debt Instrument, Effective Interest Rate	3.43%	3.43%

Financing_Arrangements_Additio

Financing Arrangements - Additional Information (Detail) (USD $)	9 Months Ended
	Jan. 23, 2015	Jan. 24, 2014	Apr. 25, 2014
Debt Instrument [Line Items]
Notes issued, principal amount	$1,500,000,000		$1,000,000,000
Notes issued, proceeds amount	494,700,000	0
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, amount	250,000,000
Credit facility, date expiry	21-Dec-17
Credit facility, increase in facility	100,000,000
Credit facility, number of extensions	2
Credit facility, extensions period	1 year
Credit facility, outstanding borrowings	0
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Credit facility, base rate	0.20%
Interest coverage ratio	350.00%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Credit facility, base rate	1.20%
Leverage ratio	300.00%
Revolving Credit Facility | Foreign Currency Sub Facility
Debt Instrument [Line Items]
Credit facility, amount	100,000,000
Revolving Credit Facility | Letter Of Credit Sub Facility
Debt Instrument [Line Items]
Credit facility, amount	50,000,000
Revolving Credit Facility | Swingline Sub-facility
Debt Instrument [Line Items]
Credit facility, amount	10,000,000
Senior Notes Due 2021
Debt Instrument [Line Items]
Notes issued, principal amount	500,000,000		0
Notes issued, interest rate	3.38%
Senior notes, maturity date	15-Jun-21
Notes issued, proceeds amount	494,700,000
Senior Notes Due 2017
Debt Instrument [Line Items]
Notes issued, principal amount	750,000,000		750,000,000
Notes issued, interest rate	2.00%
Senior Notes Due 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) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Debt Disclosure [Abstract]
2018	$750
Thereafter	750
Total	$1,500	$1,000

Financing_Arrangements_Amounts

Financing Arrangements - Amounts Due under Other Long-Term Financing Arrangements (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Debt Disclosure [Abstract]
Other long-term financing arrangements	$17.60	$13.10
Less: current portion	-9.4	-6.6
Non-current portion of other long-term financing arrangements	$8.20	$6.50

Stockholders_Equity_Activity_R

Stockholders' Equity - Activity Related to Stock Options (Detail) (USD $)	9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 23, 2015
Number of Shares
Beginning balance, Number of Shares	14.5
Options granted, Number of Shares	2.2
Options exercised, Number of Shares	-4
Options forfeited and expired, Number of Shares	-0.4
Ending balance, Number of Shares	12.3
Options vested and expected to vest, Number of Shares	11.8
Options Exercisable, Number of Shares	8.1
Weighted-Average Exercise Price
Beginning balance, Weighted-Average Exercise Price	$34.10
Options granted, Weighted-Average Exercise Price	$36.64
Options exercised, Weighted-Average Exercise Price	$25.33
Options forfeited and expired, Weighted-Average Exercise Price	$43.40
Ending balance, Weighted-Average Exercise Price	$37.03
Options vested and expected to vest, Weighted-Average Exercise Price	$37.05
Options Exercisable, Weighted-Average Exercise Price	$37.23
Weighted-Average Remaining Contractual Term and Aggregate Intrinsic Value
Outstanding, Weighted-Average Remaining Contractual Term	3 years 10 months 6 days
Options vested and expected to vest, Weighted-Average Remaining Contractual Term	3 years 9 months 4 days
Exercisable, Weighted-Average Remaining Contractual Term	2 years 10 months 28 days
Outstanding, Aggregate Intrinsic Value	$62.60
Options vested and expected to vest, Aggregate Intrinsic Value	61
Exercisable, Aggregate Intrinsic Value	$48.30

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information Related to Stock Options (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Intrinsic value of exercises	$61.20	$81.30
Proceeds received from exercises	99.9	147.7
Fair value of options vested	$26.30	$36

Stockholders_Equity_Activity_R1

Stockholders' Equity - Activity Related to Restricted Stock Units (Detail) (Restricted Stock Units, USD $)	9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 23, 2015
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Number of Shares	13.2
RSUs granted, Number of Shares	6.3
RSUs vested, Number of Shares	-4.3
RSUs forfeited, Number of Shares	-1.3
Ending Balance, Number of Shares	13.9
Beginning Balance, Weighted-Average Grant Date Fair Value	$38.35
RSUs granted, Weighted-Average Grant Date Fair Value	$35.80
RSUs vested, Weighted-Average Grant Date Fair Value	$40.05
RSUs forfeited, Weighted-Average Grant Date Fair Value	$37.71
Ending Balance, Weighted-Average Grant Date Fair Value	$36.73

Stockholders_Equity_Number_and

Stockholders' Equity - Number and Value of Shares Netted for Employee Taxes (Detail) (Restricted Stock Units, USD $)	9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares withheld for taxes	1.4	1.3
Fair value of shares withheld	$51.40	$51.40

Stockholders_Equity_Schedule_o

Stockholders' Equity - Schedule of Employee Stock Purchase Plan ESPP (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under the ESPP	3.4	3.8
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from issuance of shares	97.1	95.5

Stockholders_Equity_StockBased

Stockholders' Equity - Stock-Based Compensation Expense (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$66	$71.90	$196.10	$205.80
Cost of Product Revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	1.4	1.5	4.5	4.2
Cost of Service Revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	4	4.6	12.4	12.8
Sales and Marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	29.6	33	87	94.6
Research and Development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	21.9	23.6	64.6	66.6
General and Administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$9.10	$9.20	$27.60	$27.60

Stockholders_Equity_Additional1

Stockholders' Equity - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		0 Months Ended
	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014	Feb. 11, 2015	Feb. 09, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to equity awards	$416,700,000		$416,700,000
Unrecognized compensation expense will be amortized on a straight-line basis over a weighted-average remaining period, in years			2 years 4 months 24 days
Stock repurchase program, authorized amount	7,100,000,000		7,100,000,000
Allocation of purchase price of share repurchases			918,900,000
Cash dividend per share of common stock	$0.17	$0.15	$0.50	$0.45
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount						2,500,000,000
Additional Paid-in Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocation of purchase price of share repurchases			667,400,000
Retained Earnings
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocation of purchase price of share repurchases			$251,500,000
Common Stock | Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash dividend per share of common stock					$0.17
Cash dividend payable date					23-Apr-15
Cash dividend record date					10-Apr-15

Stockholders_Equity_Income_Tax

Stockholders' Equity - Income Tax Effects Associated with Employee Stock Transactions (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Income tax benefit associated with employee stock transactions	$54	$22.50

Stockholders_Equity_Summary_of

Stockholders' Equity - Summary of Activities Related to Stock Repurchase Program (Detail) (USD $)	9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 23, 2015
Equity [Abstract]
Number of shares repurchased	23.1
Average price per share	$39.73
Aggregate purchase price	$918.90
Remaining authorization at end of period	$205.90

Stockholders_Equity_Summary_of1

Stockholders' Equity - Summary of Activities Related to Dividends on Common Stock (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Dividends, Common Stock [Abstract]
Dividends per share declared and paid	$0.17	$0.15	$0.50	$0.45
Dividend payments			$156.90	$153.10
Additional Paid-in Capital
Dividends, Common Stock [Abstract]
Dividend payments			52.1	50.4
Retained Earnings
Dividends, Common Stock [Abstract]
Dividend payments			$104.80	$102.70

Stockholders_Equity_Reconcilia

Stockholders' Equity - Reconciliation of Retained Earnings (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Retained Earnings Adjustments [Line Items]
Beginning balance			$1.10
Net income	176.8	192.1	425	440.5
Repurchases of common stock			-251.5
Dividends paid			-156.9	-153.1
Ending balance	69.8		69.8
Retained Earnings
Retained Earnings Adjustments [Line Items]
Dividends paid			($104.80)	($102.70)

Stockholders_Equity_Accumulate

Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) by Component Net of Tax (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$9.10
Other comprehensive income (loss) (OCI) before Reclassifications, net of tax			-14.1
Amounts reclassified from AOCI, net of tax			-9.3
Net OCI	-14.9	0.4	-23.4	-2
Ending balance	-14.3		-14.3
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			5.5
Other comprehensive income (loss) (OCI) before Reclassifications, net of tax			-26.9
Amounts reclassified from AOCI, net of tax			0
Net OCI			-26.9
Ending balance	-21.4		-21.4
Defined Benefit Obligation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			-4.8
Other comprehensive income (loss) (OCI) before Reclassifications, net of tax			1.1
Amounts reclassified from AOCI, net of tax			0.3
Net OCI			1.4
Ending balance	-3.4		-3.4
Unrealized Gains on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			8.9
Other comprehensive income (loss) (OCI) before Reclassifications, net of tax			-1.4
Amounts reclassified from AOCI, net of tax			-0.1
Net OCI			-1.5
Ending balance	7.4		7.4
Unrealized Gains (Losses) on Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			-0.5
Other comprehensive income (loss) (OCI) before Reclassifications, net of tax			13.1
Amounts reclassified from AOCI, net of tax			-9.5
Net OCI			3.6
Ending balance	$3.10		$3.10

Stockholders_Equity_Amounts_Re

Stockholders' Equity - Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Operating expenses	$774.90	$775.60	$2,343.10	$2,366.60
Other income (expense), net	0.1	1.7	-0.2	6.9
Net revenues	1,551.30	1,610	4,583	4,676.10
Net income	176.8	192.1	425	440.5
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	-15.9	-0.2	-9.3	0.1
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit Obligation Adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Operating expenses	0.1	0	0.3	0
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains on Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	-0.3	0	-0.1	-1.1
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivative Instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenues	($15.70)	($0.20)	($9.50)	$1.20

Derivatives_and_Hedging_Activi2

Derivatives and Hedging Activities - Schedule of Notional Value of Outstanding Foreign Currency Forward Contracts (Detail) (United States of America, Dollars, USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Cash Flow Hedging | Long
Derivative [Line Items]
Forward contracts, Notional Amount	$159.10	$122.60
Non Designated | Long
Derivative [Line Items]
Forward contracts, Notional Amount	304.7	389.9
Non Designated | Short
Derivative [Line Items]
Forward contracts, Notional Amount	$183.20	$155.50

Derivatives_and_Hedging_Activi3

Derivatives and Hedging Activities - Schedule of Derivative Instruments Not Designated as Cash Flow Hedges (Detail) (Foreign Exchange Forward Contracts, USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Foreign Exchange Forward Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contracts	$11	$1	$9.40	$1.80

Restructuring_and_Other_Charge2

Restructuring and Other Charges - Additional Information (Detail)	Mar. 31, 2014	31-May-13
Restructuring And Related Activities [Abstract]
Reduction of global work force	4.00%	7.00%

Restructuring_and_Other_Charge3

Restructuring and Other Charges - Activities Related to Restructuring Reserves (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Restructuring Cost and Reserve [Line Items]
Net charges	$0	$0	$0	$49.50
March 2014 Restructuring
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period			26.5
Net charges			0
Cash payments			-26.5
Balance at end of period	0		0
May 2013 Restructuring
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period				0
Net charges				49.5
Cash payments				-48.9
Balance at end of period		$0.60		$0.60

Income_Taxes_Effective_Tax_Rat

Income Taxes - Effective Tax Rates (Detail)	9 Months Ended
	Jan. 23, 2015	Jan. 24, 2014
Income Tax Disclosure [Abstract]
Effective tax rates	22.50%	14.30%

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 23, 2015	Apr. 25, 2014	Jan. 24, 2014	Apr. 26, 2013
Income Tax Contingency [Line Items]
Research credit	$6	$6	$4.10
Resolution of income tax examinations		47.4
Expected refund, excluding interest from fiscal 2005 to 2007 income tax audit	8	8
Gross unrecognized tax benefits	275.4	275.4	235.9	207.8	189.6
Unrecognized tax benefits included in other long-term liabilities	220.2	220.2
Unrecognized tax benefits that would affect provision for income taxes	169.7	169.7
United Kingdom's tax authority
Income Tax Contingency [Line Items]
Resolution of income tax examinations		$1

Income_Taxes_Unrecognized_Tax_

Income Taxes - Unrecognized Tax Benefits (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014
Income Tax Disclosure [Abstract]
Balance at beginning of period	$235.90	$189.60
Additions based on tax positions related to the current year	19.1	20.9
Additions for tax positions of prior years	101.5	1.8
Decreases for tax positions of prior years	-23.5	-4.5
Settlements	-57.6	0
Balance at end of period	$275.40	$207.80

Net_Income_per_Share_Computati

Net Income per Share - Computation of Basic and Diluted Net Income Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Net income per share:
Net income	$176.80	$192.10	$425	$440.50
Shares used in basic computation	311.6	339.4	317.8	343.7
Dilutive impact of employee equity award plans	5.5	6.8	5.5	7
Dilutive impact of assumed conversion of Convertible Notes	0	0	0	0.7
Dilutive impact of warrants	0	0	0	0.3
Shares used in diluted computation	317.1	346.2	323.3	351.7
Basic	$0.57	$0.57	$1.34	$1.28
Diluted	$0.56	$0.55	$1.31	$1.25

Net_Income_per_Share_AntiDilut

Net Income per Share - Anti-Dilutive Shares Excluded from Calculation of Net Income Per Share (Detail)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Earnings Per Share [Abstract]
Employee equity award plans	6.8	5.7	7.5	6.5

Segment_Geographic_and_Signifi2

Segment Geographic and Significant Customer Information - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
	Segment	Segment	Segment	Segment
Segment Reporting Information [Line Items]
Number of industry segment	1	1	1	1
Net revenues	$1,551.30	$1,610	$4,583	$4,676.10
United States
Segment Reporting Information [Line Items]
Net revenues	$747.20	$734.60	$2,309.80	$2,308.10

Segment_Geographic_and_Signifi3

Segment Geographic and Significant Customer Information - Schedule of Revenues by Geographic Region (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Segment Reporting Information [Line Items]
Net revenues	$1,551.30	$1,610	$4,583	$4,676.10
Americas (United States, Canada And Latin America)
Segment Reporting Information [Line Items]
Net revenues	836.9	838.7	2,574.20	2,596.40
Europe, Middle East And Africa
Segment Reporting Information [Line Items]
Net revenues	509.2	546.9	1,391.70	1,439.90
Asia Pacific
Segment Reporting Information [Line Items]
Net revenues	$205.20	$224.40	$617.10	$639.80

Segment_Geographic_and_Signifi4

Segment Geographic and Significant Customer Information - Schedule of Total Cash, Cash Equivalents, Restricted Cash and Investments (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Segment Reporting Information [Line Items]
Cash, cash equivalents, restricted cash and investments	$5,265.60	$5,049.40
United States
Segment Reporting Information [Line Items]
Cash, cash equivalents, restricted cash and investments	671.1	688.5
International
Segment Reporting Information [Line Items]
Cash, cash equivalents, restricted cash and investments	$4,594.50	$4,360.90

Segment_Geographic_and_Signifi5

Segment Geographic and Significant Customer Information - Schedule of Property and Equipment Net by Geographic Areas (Detail) (USD $)	Jan. 23, 2015	Apr. 25, 2014
In Millions, unless otherwise specified
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment	$1,050.70	$1,108.80
United States
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment	954.9	1,021.40
International
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment	$95.80	$87.40

Segment_Geographic_and_Signifi6

Segment Geographic and Significant Customer Information - Significant Customers (Detail) (Net Revenue, Customer Concentration Risk)	3 Months Ended		9 Months Ended
	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Arrow Electronics, Inc.
Segment Reporting Information [Line Items]
Percentage of net revenues	22.00%	20.00%	23.00%	21.00%
Avnet, Inc.
Segment Reporting Information [Line Items]
Percentage of net revenues	16.00%	15.00%	16.00%	16.00%

Segment_Geographic_and_Signifi7

Segment Geographic and Significant Customer Information - Schedule of Net Accounts Receivable from Significant Customers (Detail) (Accounts Receivable, Credit Concentration Risk)	9 Months Ended	12 Months Ended
	Jan. 23, 2015	Apr. 25, 2014
Arrow Electronics, Inc.
Segment Reporting Information [Line Items]
Percentage of net accounts receivable	12.00%	14.00%
Avnet, Inc.
Segment Reporting Information [Line Items]
Percentage of net accounts receivable		16.00%

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Apr. 25, 2014
Commitments and Contingencies Disclosure [Line Items]
Future annual minimum lease payments	203.2
Accrued purchase commitments with contract manufacturers	9.4	11.5
Maximum
Commitments and Contingencies Disclosure [Line Items]
Terms of recourse leases	3 years
Software Products
Commitments and Contingencies Disclosure [Line Items]
Product warranty term	90 days
Hardware Products
Commitments and Contingencies Disclosure [Line Items]
Product warranty term	3 years
Contract Manufacturers
Commitments and Contingencies Disclosure [Line Items]
Purchase commitments	274.6
Capital Purchase Commitments
Commitments and Contingencies Disclosure [Line Items]
Purchase commitments	68.8
Other Purchase Commitments
Commitments and Contingencies Disclosure [Line Items]
Purchase commitments	192.2

Commitments_and_Contingencies_2

Commitments and Contingencies - Schedule of Product Warranty Liabilities and Balances Reported in Condensed Consolidated Balance Sheets (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014	Apr. 25, 2014
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$96.60	$116	$110	$117.20
Expense accrued during the period	3.1	21.1	21.9	59.4
Warranty costs incurred	-12.2	-20	-44.4	-59.5
Balance at end of period	87.5	117.1	87.5	117.1
Standard Product Warranty Accrual, Balance Sheet Classification [Abstract]
Other current liabilities	59.5		59.5		73
Other long-term liabilities	28		28		37
Total	$87.50	$117.10	$87.50	$117.10