NetApp (NTAP) 10-Q 28 Aug 14 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Jul. 25, 2014	Aug. 18, 2014
Document Information [Line Items]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	25-Jul-14	'
Document Fiscal Year Focus	'2015	'
Document Fiscal Period Focus	'Q1	'
Trading Symbol	'NTAP	'
Entity Registrant Name	'NetApp, Inc.	'
Entity Central Index Key	'0001002047	'
Current Fiscal Year End Date	'--04-24	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	319,256,006

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$3,031.60	$2,291
Short-term investments	2,532.60	2,712.30
Accounts receivable, net of allowances of $1.6 million and $1.7 million as of July 25, 2014 and April 25, 2014, respectively	585.4	855.9
Inventories	104.2	122.4
Other current assets	494.3	489.7
Total current assets	6,748.10	6,471.30
Property and equipment, net	1,098	1,108.80
Goodwill	988.1	988.1
Purchased intangible assets, net	107	121.5
Other non-current assets	531.2	529.5
Total assets	9,472.40	9,219.20
Current liabilities:	'	'
Accounts payable	183.1	247
Accrued compensation and related benefits	243	407.8
Other current liabilities	318.4	386
Short-term deferred revenue	1,656.40	1,653.80
Total current liabilities	2,400.90	2,694.60
Long-term debt	1,494.10	995.5
Other long-term liabilities	320.8	296.2
Long-term deferred revenue	1,419.90	1,446.40
Total liabilities	5,635.70	5,432.70
Commitments and contingencies (Note 14)	'	'
Stockholders' equity:	'	'
Common stock, $0.001 par value, (325.5 and 324.5 shares issued as of July 25, 2014 and April 25, 2014, respectively)	0.3	0.3
Additional paid-in capital	3,791.20	3,776
Retained earnings	36.1	1.1
Accumulated other comprehensive income	9.1	9.1
Total stockholders' equity	3,836.70	3,786.50
Total liabilities and stockholders' equity	$9,472.40	$9,219.20

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, except Per Share data, unless otherwise specified
Accounts receivable, allowances	$1.60	$1.70
Common stock, par value	$0.00	$0.00
Common stock, shares issued	325.5	324.5

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Revenues:	'	'
Product	$882.60	$930.80
Software entitlements and maintenance	221.3	228.5
Service	385.3	356.9
Net revenues	1,489.20	1,516.20
Cost of revenues:	'	'
Cost of product	394.2	449.9
Cost of software entitlements and maintenance	8.2	7.5
Cost of service	148.7	149.2
Total cost of revenues	551.1	606.6
Gross profit	938.1	909.6
Operating expenses:	'	'
Sales and marketing	480.2	467.8
Research and development	228	228.1
General and administrative	70	68.4
Restructuring and other charges	0	48.4
Total operating expenses	778.2	812.7
Income from operations	159.9	96.9
Other income (expense), net:	'	'
Interest income	8.3	10
Interest expense	-9	-16.5
Other income, net	0.5	1.9
Total other expense, net	-0.2	-4.6
Income before income taxes	159.7	92.3
Provision for income taxes	71.3	10.7
Net income	$88.40	$81.60
Net income per share:	'	'
Basic	$0.27	$0.23
Diluted	$0.27	$0.23
Shares used in net income per share calculations:	'	'
Basic	323.5	350.9
Diluted	329.1	359.9
Cash dividends declared per share	$0.17	$0.15

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Net income	$88.40	$81.60
Other comprehensive income (loss):	'	'
Foreign currency translation adjustments	-0.8	-1.2
Defined benefit obligations:	'	'
Defined benefit obligation adjustments	1.5	0.1
Income tax effect on defined benefit obligations	-0.5	0
Reclassification adjustment for actuarial net losses from defined benefit obligations into earnings	0.1	0
Unrealized gains (losses) on available-for-sale securities:	'	'
Unrealized holding losses arising during the period	-1.8	-8.4
Income tax effect on unrealized holding gains	0.2	1
Reclassification adjustments for (gains) losses included in net income	0.2	-0.1
Unrealized gains (losses) on cash flow hedges:	'	'
Unrealized holding losses arising during the period	-0.6	-0.4
Reclassification adjustments for (gains) losses included in net income	1.7	-1
Other comprehensive income (loss)	0	-10
Comprehensive income	$88.40	$71.60

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Cash flows from operating activities:	'	'
Net income	$88.40	$81.60
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	77.5	85.9
Stock-based compensation	62.3	66.3
Accretion of discount and issuance costs on debt	0.6	8.2
Deferred income taxes	8.2	-10.1
Excess tax benefit from stock-based compensation	-42.6	-0.1
Other non-cash items, net	36.9	-25.3
Changes in assets and liabilities:	'	'
Accounts receivable	271.5	265.2
Inventories	18.1	22.9
Other operating assets	-13.1	53.8
Accounts payable	-62.3	-37.9
Accrued compensation and other current liabilities	-227.1	-175.4
Deferred revenue	-26.5	-54.3
Other operating liabilities	23.6	5
Net cash provided by operating activities	215.5	285.8
Cash flows from investing activities:	'	'
Purchases of investments	-331.7	-234.9
Maturities, sales and collections of investments	522.9	624.9
Purchases of property and equipment	-58.4	-65.3
Other investing activities, net	0.2	1.2
Net cash provided by investing activities	133	325.9
Cash flows from financing activities:	'	'
Issuance of common stock under employee stock plans	28.4	71.5
Repurchase of common stock and forward contract	-118.9	-849.5
Excess tax benefit from stock-based compensation	42.6	0.1
Repayment of long-term debt	0	-1,264.90
Issuance of long-term debt, net	494.7	0
Dividends paid	-53.4	-51.4
Other financing activities, net	-1.8	9.5
Net cash provided by (used in) financing activities	391.6	-2,084.70
Effect of exchange rate changes on cash and cash equivalents	0.5	-7.3
Net increase (decrease) in cash and cash equivalents	740.6	-1,480.30
Cash and cash equivalents:	'	'
Beginning of period	2,291	3,277.10
End of period	$3,031.60	$1,796.80

Description_of_Business_and_Si

Description of Business and Significant Accounting Policies	3 Months Ended
	Jul. 25, 2014
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. The first quarters of fiscal 2015 and 2014 were each 13-week periods.
	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 months ended July 25, 2014 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 three months ended July 25, 2014, 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	3 Months Ended
	Jul. 25, 2014
Recent Accounting Standards Not Yet Effective	'
	2.  Recent Accounting Standards Not Yet Effective
	In April 2014, the 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 Financial Accounting Standards Board 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

Statements of Cash Flows	3 Months Ended
	Jul. 25, 2014
Statements of Cash Flows	'
	3.  Statements of Cash Flows
	Non-cash investing and financing activities and supplemental cash flow information are as follows (in millions):
		Three Months Ended
		July 25,		July 26,
		2014		2013
	Non-cash Investing and Financing Activities:
	Capital expenditures incurred but not paid	$	11.5	$	17.7
	Acquisition of software through long-term financing	$	3.1	$	10.6
	Supplemental Cash Flow Information:
	Income taxes paid, net of refunds	$	68.2	$	19.1
	Interest paid, net of capitalized interest	$	11.7	$	23

Purchased_Intangible_Assets_Ne

Purchased Intangible Assets, Net	3 Months Ended
	Jul. 25, 2014
Purchased Intangible Assets, Net	'
	4.  Purchased Intangible Assets, Net
	Purchased intangible assets, net are summarized below (in millions):
		July 25, 2014							April 25, 2014
		Gross		Accumulated			Net		Gross		Accumulated			Net
		Assets		Amortization			Assets		Assets		Amortization			Assets
	Developed technology	$	283	$	(176.9	)	$	106.1	$	283	$	(162.6	)	$	120.4
	Customer contracts/relationships		2.6		(2.1	)		0.5		9.6		(9.0	)		0.6
	Trademarks and trade names		2.9		(2.5	)		0.4		2.9		(2.4	)		0.5
	Covenants not to compete		0		0			0		1.6		(1.6	)		0
	Total purchased intangible assets	$	288.5	$	(181.5	)	$	107	$	297.1	$	(175.6	)	$	121.5
	Amortization expense for purchased intangible assets is summarized below (in millions):
		Three Months Ended
		July 25,		July 26,			Statements of  Operations
		2014		2013			Classifications
	Developed technology	$	14.3	$	14.3		Cost of revenues
	Customer contracts/relationships		0.1		0.4		Operating expenses
	Trademarks and trade names		0.1		0.1		Operating expenses
	Covenants not to compete		0		0.1		Operating expenses
		$	14.5	$	14.9
	As of July 25, 2014, future amortization expense related to purchased intangible assets is as follows (in millions):
	Fiscal Year	Amount
	Remainder of 2015	$	43.4
	2016		53.6
	2017		6.7
	2018		3.3
	Total	$	107

Balance_Sheet_Details

Balance Sheet Details	3 Months Ended
	Jul. 25, 2014
Balance Sheet Details	'
	5.  Balance Sheet Details
	Cash and cash equivalents (in millions):
		July 25,			April 25,
		2014			2014
	Cash	$	2,878.20		$	2,174.00
	Cash equivalents		153.4			117
	Cash and cash equivalents	$	3,031.60		$	2,291.00
	Inventories (in millions):
		July 25,			April 25,
		2014			2014
	Purchased components	$	17.1		$	17.6
	Finished goods		87.1			104.8
	Inventories	$	104.2		$	122.4
	Other current assets (in millions):
		July 25,			April 25,
		2014			2014
	Prepaid expenses and other current assets	$	240.7		$	219.4
	Deferred tax assets		253.6			270.3
	Other current assets	$	494.3		$	489.7
	Property and equipment, net (in millions):
		July 25,			April 25,
		2014			2014
	Land	$	265.7		$	265.7
	Buildings and building improvements		605.7			541.7
	Leasehold improvements		103.9			102.9
	Computer, production, engineering and other equipment		768.3			753.8
	Software		376.5			369.1
	Furniture and fixtures		88.3			86.4
	Construction-in-progress		14			72.9
			2,222.40			2,192.50
	Accumulated depreciation and amortization		(1,124.4	)		(1,083.7	)
	Property and equipment, net	$	1,098.00		$	1,108.80
	The net book value of software, which includes capitalized internal-use software development costs, is summarized below (in millions):
		July 25,			April 25,
		2014			2014
	Computer software	$	96.6		$	103.5
	Other non-current assets (in millions):
		July 25,			April 25,
		2014			2014
	Auction rate securities	$	26.4		$	36
	Deferred tax assets		241			245
	Other assets		263.8			248.5
	Other non-current assets	$	531.2		$	529.5
	Short-term and long-term deferred revenue (in millions):
		July 25,			April 25,
		2014			2014
	Product	$	31.9		$	23.4
	Software entitlements and maintenance and service		3,044.40			3,076.80
	Total	$	3,076.30		$	3,100.20
	Reported as:
	Short-term	$	1,656.40		$	1,653.80
	Long-term		1,419.90			1,446.40
	Total	$	3,076.30		$	3,100.20

Financial_Instruments_and_Fair

Financial Instruments and Fair Value Measurements	3 Months Ended
	Jul. 25, 2014
Financial Instruments and Fair Value Measurements	'
	6.  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):
			July 25, 2014											April 25, 2014
						Gross Unrealized										Gross Unrealized
			Cost or			Gains			Losses			Estimated		Cost or		Gains		Losses			Estimated
			Amortized									Fair Value		Amortized							Fair Value
			Cost											Cost
	Corporate bonds		$	1,905.80		$	8.5		$	(0.4	)	$	1,913.90	$	2,142.30	$	10.5	$	(0.5	)	$	2,152.30
	U.S. Treasury and government debt securities			227.1			0.3			(0.1	)		227.3		263.4		0.3		(0.1	)		263.6
	Commercial paper			174.5			0			0			174.5		168.4		0		0			168.4
	Certificates of deposit			370.3			0			0			370.3		245		0		0			245
	Auction rate securities			26.9			0			(0.5	)		26.4		36.9		0		(0.9	)		36
	Equity funds			33.5			0			0			33.5		32.7		0		0			32.7
	Total debt and equity securities		$	2,738.10		$	8.8		$	(1.0	)	$	2,745.90	$	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 July 25, 2014.
	The following table presents the contractual maturities of our debt investments as of July 25, 2014 (in millions):
			Amortized			Fair
			Cost			Value
	Due in one year or less		$	1,413.80		$	1,416.20
	Due in two through five years			1,263.90			1,269.80
	Due after ten years*			26.9			26.4
			$	2,704.60		$	2,712.40
	*	Consists of auction rate securities (ARSs) which have contractual maturities of greater than 10 years.
	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):
			July 25, 2014
						Fair Value Measurements at Reporting Date Using
			Total			Quoted Prices			Significant			Significant
						in Active			Other			Unobservable
						Markets for			Observable			Inputs
						Identical Assets			Inputs			(Level 3)
						(Level 1)			(Level 2)
	Assets
	Corporate bonds		$	1,913.90		$	0		$	1,913.90		$	0
	U.S. Treasury and government debt securities			227.3			161.9			65.4			0
	Commercial paper			174.5			0			174.5			0
	Certificates of deposit			370.3			0			370.3			0
	Auction rate securities			26.4			0			0			26.4
	Equity funds			33.5			33.5			0			0
	Foreign currency contracts			3.2			0			3.2			0
	Total		$	2,749.10		$	195.4		$	2,527.30		$	26.4
	Liabilities
	Foreign currency contracts		$	(0.7	)	$	0		$	(0.7	)	$	0
	The following table summarizes the balance sheet classifications of our financial assets and liabilities measured at fair value on a recurring basis (in millions):
			July 25, 2014
						Fair Value Measurements at Reporting Date Using
			Total			Quoted Prices			Significant			Significant
						in Active			Other			Unobservable
						Markets for			Observable			Inputs
						Identical Assets			Inputs			(Level 3)
						(Level 1)			(Level 2)
	Assets
	Cash equivalents		$	153.4		$	0		$	153.4		$	0
	Short-term investments			2,532.60			161.9			2,370.70			0
	Other current assets			8.4			5.2			3.2			0
	Other non-current assets			54.7			28.3			0			26.4
Total		$	2,749.10		$	195.4		$	2,527.30		$	26.4
Liabilities
Other current liabilities		$	(0.7	)	$	0		$	(0.7	)	$	0
Level 2 investments 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 July 25, 2014, we have not made any adjustments to the prices obtained from our third-party pricing providers.
Quantitative information about our Level 3 fair value measurements is as follows (fair value in millions):
		Estimated Fair			Valuation Techniques		Unobservable Inputs	Range
		Value as of						(Weighted average)
		July 25, 2014
ARSs		$	26.4		Discounted cash flow		Time-to-economic maturity	6.7 yrs. – 9.4 yrs. (7.5 yrs.)
							Illiquidity premium	1.3% – 1.8% (1.5%)
							Coupon rate	1.1% – 1.8% (1.4%)
					Market comparable securities		Discount rate	1.0% – 2.0% (1.3%)
All of our ARSs are classified as other non-current assets and are backed by pools of student loans guaranteed by the U.S. Department of Education. We estimate the fair value of each individual ARS using an income (discounted cash flow) and market approach that incorporate both observable and unobservable inputs. Key inputs into the discounted cash flow analysis include the time-to-economic maturity, illiquidity premium, (which factors in liquidity risk, market credit spread and other factors), and a coupon rate. The key input into the market approach is a discount rate. A significant increase (decrease) in the time-to-economic maturity, illiquidity premium, coupon rate, discount rate or other factors could result in a significantly lower (higher) fair value estimate. We review the fair value of our Level 3 financial instruments for overall reasonableness by reviewing service provider pricing methodologies, key inputs and assumptions and by understanding the processes used by our third-party service provider. We will continue to monitor our ARS investments in light of the asset-backed securities market environment and evaluate these investments for impairment and classification.
The table below provides a reconciliation of the beginning and ending balance of our Level 3 ARSs measured at fair value on a recurring basis using significant unobservable inputs (in millions).
		Three Months Ended
		July 25,			July 26,
		2014			2013
Balance at beginning of period		$	36		$	42
Total unrealized gains, net included in other comprehensive income (loss)			0.4			0.2
Sales			(10.0	)		0
Balance at end of period		$	26.4		$	42.2
Fair Value of Debt
As of July 25, 2014, the fair value of our long-term debt was approximately $1,506.4 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 instruments.

Financing_Arrangements

Financing Arrangements	3 Months Ended
	Jul. 25, 2014
Financing Arrangements	'
	7.  Financing Arrangements
	Long-term Debt
	The following table summarizes the carrying value of our long-term debt (in millions):
		July 25, 2014						April 25, 2014
		Amount			Effective			Amount			Effective
					Interest Rate						Interest Rate
	2.00% Senior Notes due 2017	$	750			2.25	%	$	750			2.25	%
	3.375% Senior Notes due 2021		500			3.54	%		0			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		(5.9	)					(4.5	)
	Total long-term debt	$	1,494.10					$	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 at 101% of their aggregate principal amount, plus accrued and unpaid interest to the date of repurchase. 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 July 25, 2014, we were in compliance with all covenants associated with the Senior Notes.
	As of July 25, 2014, 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 July 25, 2014, 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):
		July 25,			April 25,
		2014			2014
	Other long-term financing arrangements	$	14.3		$	13.1
	Less: current portion		(7.1	)		(6.6	)
	Non-current portion of other long-term financing arrangements	$	7.2		$	6.5

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Jul. 25, 2014
Stockholders' Equity	'
	8.  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			36.29
	Exercised		(0.5	)		23.6
	Forfeited and expired		(0.2	)		41.43
	Outstanding as of July 25, 2014		15.8			34.68			3.75		$	93.1
	Vested and expected to vest as of July 25, 2014		15			34.58			3.63			91.6
	Exercisable as of July 25, 2014		10.4			33.33			2.63			81.1
	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):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Intrinsic value of exercises	$	7.2		$	27.4
	Proceeds received from exercises	$	13.4		$	56.8
	Fair value of options vested	$	8.7		$	12
	Restricted Stock Units
	The following table summarizes activity related to our restricted stock units (RSUs) (in millions, except for fair value):
		Number			Weighted-
		of Shares			Average
					Grant Date
					Fair Value
	Outstanding as of April 25, 2014		13.2		$	38.35
	Granted		5.3			34.93
	Vested		(2.9	)		38.79
	Forfeited		(0.7	)		38.14
	Outstanding as of July 25, 2014		14.9			37.06
	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):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Shares withheld for taxes		0.9			0.9
	Fair value of shares withheld	$	33.9		$	35.3
	Employee Stock Purchase Plan
	The following table summarizes activity related to the purchase rights issued under the Employee Stock Purchase Plan (ESPP) (in millions):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Shares issued under the ESPP		1.9			2
	Proceeds from issuance of shares	$	48.9		$	49.9
	Stock-Based Compensation Expense
	Stock-based compensation expense is included in the condensed consolidated statements of operations as follows (in millions):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Cost of product revenues	$	1.5		$	1.3
	Cost of service revenues		4.4			4
	Sales and marketing		27			30.5
	Research and development		21.5			21.4
	General and administrative		7.9			9.1
	Total stock-based compensation expense	$	62.3		$	66.3
	As of July 25, 2014, total unrecognized compensation expense related to our equity awards was $507.8 million, which is expected to be recognized on a straight-line basis over a weighted-average remaining service period of 2.7 years.
	Total income tax benefit associated with employee stock transactions and recognized in stockholders’ equity were as follows (in millions):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Income tax benefit associated with employee stock transactions	$	43.4		$	8
	Valuation Assumptions
	The fair value of stock options and ESPP purchase rights is estimated on the grant date using the Black-Scholes option pricing model and the following underlying weighted-average assumptions:
		Stock Options
		Three Months Ended
	July 25, 2014			July 26, 2013
Expected term in years		4.8			4.8
Risk-free interest rate		1.6	%		1	%
Volatility		29	%		34	%
Dividend yield		1.8	%		1.6	%
Weighted-average fair value per share granted	$	8.19		$	9.78
	ESPP
	Three Months Ended
	July 25, 2014			July 26, 2013
Expected term in years		1.3			1.2
Risk-free interest rate		0.2	%		0.2	%
Volatility		27	%		32	%
Dividend yield		1.8	%		1.6	%
Weighted-average fair value per right granted	$	9.71		$	10.53
The weighted-average assumptions used to value RSUs are summarized as follows:
	Three Months Ended
	July 25, 2014			July 26, 2013
Grant date fair value per share	$	34.93		$	38.16
Expected dividend		1.8	%		1.6	%
Stock Repurchase Program
As of July 25, 2014, 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 three months ended July 25, 2014 (in millions, except per share information):
Number of shares repurchased		3.4
Average price per share	$	34.82
Aggregate purchase price	$	118.9
Remaining authorization at end of period	$	1,005.9
The aggregate purchase price of our stock repurchases for the three months ended July 25, 2014 consisted of $118.9 million of open market purchases, which was allocated to additional paid-in capital.
Dividends
The following is a summary of our activities related to dividends on our common stock (in millions, except per share amounts):
	Three Months Ended
	July 25, 2014			July 26, 2013
Dividends per share declared and paid	$	0.165		$	0.150
Dividend payments allocated to retained earnings	$	53.4		$	51.4
On August 13, 2014, we declared a cash dividend of $0.165 per share of common stock, payable on October 22, 2014 to holders of record as of the close of business on October 10, 2014. 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 three months ended July 25, 2014 is as follows (in millions):
Balance as of April 25, 2014	$	1.1
Net income		88.4
Dividends		(53.4	)
Balance as of July 25, 2014	$	36.1
Accumulated Other Comprehensive Income
Changes in accumulated other comprehensive income (AOCI) by component, net of tax, for the three months ended July 25, 2014 are summarized below (in millions):
	Foreign			Defined			Unrealized			Unrealized			Total
	Currency			Benefit			Gains on			Gains on
	Translation			Obligation			Available-			Derivative
	Adjustments			Adjustments			for-Sale			Instruments
							Securities
Balance as of April 25, 2014	$	5.5		$	(4.8	)	$	8.9		$	(0.5	)	$	9.1
Other comprehensive income (loss) (OCI) before reclassifications		(0.8	)		1			(1.6	)		(0.6	)		(2.0	)
Amounts reclassified from AOCI, net of tax		0			0.1			0.2			1.7			2
Net OCI		(0.8	)		1.1			(1.4	)		1.1			0
Balance as of July 25, 2014	$	4.7		$	(3.7	)	$	7.5		$	0.6		$	9.1
The amounts reclassified out of AOCI are as follows (in millions):
	Three Months Ended
	July 25, 2014			July 26, 2013
OCI Components	Amounts Reclassified from AOCI						Statements of Operations
							Location
Recognized losses on defined benefit obligations	$	0.1		$	0			Operating expenses
Realized (gains) losses on available-for-sale securities		0.2			(0.1	)		Other expense, net
Realized (gains) losses on cash flow hedges		1.7			(1.0	)		Net revenues
Total reclassifications	$	2		$	(1.1	)

Derivatives_and_Hedging_Activi

Derivatives and Hedging Activities	3 Months Ended
	Jul. 25, 2014
Derivatives and Hedging Activities	'
	9.  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):
		July 25,			April 25,
		2014			2014
	Cash Flow Hedges
	Forward contracts purchased	$	116.1		$	122.6
	Balance Sheet Contracts
	Forward contracts sold		167.6			155.5
	Forward contracts purchased		270.6			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 July 25, 2014 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 8.
	The effect of derivative instruments not designated as hedging instruments recognized in other income, net on our condensed consolidated statements of operations was as follows (in millions):
		Three Months Ended
		July 25, 2014			July 26, 2013
		Gain (Loss) Recognized into Income
	Foreign exchange forward contracts	$	(0.8	)	$	0.2

Restructuring_and_Other_Charge

Restructuring and Other Charges	3 Months Ended
	Jul. 25, 2014
Restructuring and Other Charges	'
	10.  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 fiscal 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%. We expect such activities to be substantially completed in the second quarter of fiscal 2015. Restructuring and other charges consisted primarily of employee severance-related costs.
	Activities related to these plans are summarized as follows (in millions):
		Three Months Ended			Three Months Ended
		July 25, 2014			July 26, 2013
		(March 2014 Plan)			(May 2013 Plan)
	Balance at beginning of period	$	26.5		$	0
	Net charges		0			48.4
	Cash payments		(21.6	)		(24.6	)
	Balance at end of period	$	4.9		$	23.8
	The liability for our restructuring plans is included in accrued compensation and related benefits in our condensed consolidated balance sheets.

Income_Taxes

Income Taxes	3 Months Ended
	Jul. 25, 2014
Income Taxes	'
	11.  Income Taxes
	Our effective tax rates for the periods presented were as follows:
		Three Months Ended
		July 25, 2014			July 26, 2013
	Effective tax rates		44.6	%		11.6	%
	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 three months ended July 25, 2014 was impacted by the settlement of an income tax audit as discussed below.
	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. As a result of this reduction in taxable dividends, we expect to receive a refund of $8.0 million, excluding interest, from the conclusion of the fiscal 2005 to 2007 income tax audit.
	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
		Three Months Ended
		July 25,			July 26,
		2014			2013
	Balance at beginning of period	$	235.9		$	189.6
	Additions based on tax positions related to the current year		6.8			7.2
	Additions for tax positions of prior years		98.7			1
	Decreases for tax positions of prior years		(18.6	)		(3.5	)
	Settlements		(45.5	)		0
	Balance at end of period	$	277.3		$	194.3
	As of July 25, 2014, we had $277.3 million of gross unrecognized tax benefits, of which $223.6 million has been recorded in other long-term liabilities. Unrecognized tax benefits of $172.9 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.
	In April 2010, our Dutch subsidiary received a favorable tax ruling from the Dutch tax authorities, effective May 1, 2010, that replaces the previous Dutch tax ruling that expired on April 30, 2010. This ruling results in both a lower level of earnings subject to tax in the Netherlands and an extension of the expiration date to April 30, 2015.

Net_Income_per_Share

Net Income per Share	3 Months Ended
	Jul. 25, 2014
Net Income per Share	'
	12. 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
		July 25,		July 26,
		2014		2013
	Numerator:
	Net income	$	88.4	$	81.6
	Denominator:
	Shares used in basic computation		323.5		350.9
	Dilutive potential shares related to employee equity award plans		5.6		6.9
	Dilutive impact of assumed conversion of Convertible Notes		0		2.1
	Shares used in diluted computation		329.1		359.9
	Net Income per Share:
	Basic	$	0.27	$	0.23
	Diluted	$	0.27	$	0.23
	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
		July 25,		July 26,
		2014		2013
	Employee equity award plans		8.5		6.6

Segment_Geographic_and_Signifi

Segment, Geographic, and Significant Customer Information	3 Months Ended
	Jul. 25, 2014
Segment, Geographic, and Significant Customer Information	'
	13.  Segment, Geographic, and Significant Customer Information
	We operate in one industry segment: the design, manufacturing, marketing, and technical support of high-performance networked storage 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 its 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
		July 25,			July 26,
		2014			2013
	Americas (United States, Canada and Latin America)	$	831.2		$	858.5
	Europe, Middle East and Africa		444.9			448
	Asia Pacific		213.1			209.7
	Net revenues	$	1,489.20		$	1,516.20
	Americas revenues consist of sales to Americas commercial and U.S. public sector markets. Sales to customers inside the United States comprised $746.2 million and $772.8 million of Americas net revenues during the three months ended July 25, 2014 and July 26, 2013, respectively. No single foreign country accounted for 10% or more of our net revenues for any period presented.
	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):
		July 25,			April 25,
		2014			2014
	United States	$	1,089.60		$	688.5
	International		4,514.40			4,360.90
	Total	$	5,604.00		$	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):
		July 25,			April 25,
		2014			2014
	United States	$	1,005.30		$	1,021.40
	International		92.7			87.4
	Total	$	1,098.00		$	1,108.80
	The following customers, each of which is a distributor, accounted for 10% or more of our net revenues:
		Three Months Ended
		July 25,			July 26,
		2014			2013
	Arrow Electronics, Inc.		22	%		21	%
	Avnet, Inc.		16	%		16	%
	The following customers accounted for 10% or more of net accounts receivable:
		July 25,			April 25,
		2014			2014
	Arrow Electronics, Inc.		12	%		14	%
	Avnet, Inc.		11	%		16	%

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Jul. 25, 2014
Commitments and Contingencies	'
	14.  Commitments and Contingencies
	Operating Lease Commitments
	We lease various equipment, vehicles and office space in the U.S. and internationally. As of July 25, 2014, future annual minimum lease payments under non-cancelable operating leases with an initial term in excess of one year totaled $213.6 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 July 25, 2014, we had $239.3 million in non-cancelable purchase commitments with our contract manufacturers. 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 July 25, 2014 and April 25, 2014, such liability amounted to $10.4 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 received goods or services. As of July 25, 2014, we had $36.4 million in capital purchase commitments and $180.2 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 table summarizes the activity related to product warranty liabilities (in millions):
		Three Months Ended
		July 25,			July 26,
		2014			2013
	Balance at beginning of period	$	110		$	117.2
	Expense accrued during the period		10.5			24
	Warranty costs incurred		(16.4	)		(21.4	)
	Balance at end of period	$	104.1		$	119.8
	Product warranty liabilities were reported in our condensed consolidated balance sheets as follows (in millions):
		July 25,			April 25,
		2014			2014
	Other current liabilities	$	68.8		$	73
	Other long-term liabilities		35.3			37
	Total	$	104.1		$	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.
	The following schedule of financing guarantees represents the total maximum potential future payments under financing arrangements with third parties and the related deferred revenue (in millions):
		July 25,			April 25,
		2014			2014
	Maximum guaranteed payment contingencies	$	213.2		$	205.8
	Deferred revenue associated with financing guarantees		(196.8	)		(193.1	)
	Net amount	$	16.4		$	12.7
	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 July 25, 2014 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)	3 Months Ended
	Jul. 25, 2014
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. The first quarters of fiscal 2015 and 2014 were each 13-week periods.
	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 months ended July 25, 2014 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 three months ended July 25, 2014, as compared to the significant accounting policies described in our Annual Report on Form 10-K for the fiscal year ended April 25, 2014.

Statements_of_Cash_Flows_Table

Statements of Cash Flows (Tables)	3 Months Ended
	Jul. 25, 2014
Supplemental Cash Flows and Non-Cash Investing and Financing Activities	'
	Non-cash investing and financing activities and supplemental cash flow information are as follows (in millions):
		Three Months Ended
		July 25,		July 26,
		2014		2013
	Non-cash Investing and Financing Activities:
	Capital expenditures incurred but not paid	$	11.5	$	17.7
	Acquisition of software through long-term financing	$	3.1	$	10.6
	Supplemental Cash Flow Information:
	Income taxes paid, net of refunds	$	68.2	$	19.1
	Interest paid, net of capitalized interest	$	11.7	$	23

Purchased_Intangible_Assets_Ne1

Purchased Intangible Assets, Net (Tables)	3 Months Ended
	Jul. 25, 2014
Purchased Intangible Assets, Net	'
	Purchased intangible assets, net are summarized below (in millions):
		July 25, 2014							April 25, 2014
		Gross		Accumulated			Net		Gross		Accumulated			Net
		Assets		Amortization			Assets		Assets		Amortization			Assets
	Developed technology	$	283	$	(176.9	)	$	106.1	$	283	$	(162.6	)	$	120.4
	Customer contracts/relationships		2.6		(2.1	)		0.5		9.6		(9.0	)		0.6
	Trademarks and trade names		2.9		(2.5	)		0.4		2.9		(2.4	)		0.5
	Covenants not to compete		0		0			0		1.6		(1.6	)		0
	Total purchased intangible assets	$	288.5	$	(181.5	)	$	107	$	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
		July 25,		July 26,			Statements of  Operations
		2014		2013			Classifications
	Developed technology	$	14.3	$	14.3		Cost of revenues
	Customer contracts/relationships		0.1		0.4		Operating expenses
	Trademarks and trade names		0.1		0.1		Operating expenses
	Covenants not to compete		0		0.1		Operating expenses
		$	14.5	$	14.9
Future Amortization Expense Related to Purchased Intangible Assets	'
	As of July 25, 2014, future amortization expense related to purchased intangible assets is as follows (in millions):
	Fiscal Year	Amount
	Remainder of 2015	$	43.4
	2016		53.6
	2017		6.7
	2018		3.3
	Total	$	107

Balance_Sheet_Details_Tables

Balance Sheet Details (Tables)	3 Months Ended
	Jul. 25, 2014
Cash and Cash Equivalents	'
	Cash and cash equivalents (in millions):
		July 25,			April 25,
		2014			2014
	Cash	$	2,878.20		$	2,174.00
	Cash equivalents		153.4			117
	Cash and cash equivalents	$	3,031.60		$	2,291.00
Inventories	'
	Inventories (in millions):
		July 25,			April 25,
		2014			2014
	Purchased components	$	17.1		$	17.6
	Finished goods		87.1			104.8
	Inventories	$	104.2		$	122.4
Other Current Assets	'
	Other current assets (in millions):
		July 25,			April 25,
		2014			2014
	Prepaid expenses and other current assets	$	240.7		$	219.4
	Deferred tax assets		253.6			270.3
	Other current assets	$	494.3		$	489.7
Property and Equipment, Net	'
	Property and equipment, net (in millions):
		July 25,			April 25,
		2014			2014
	Land	$	265.7		$	265.7
	Buildings and building improvements		605.7			541.7
	Leasehold improvements		103.9			102.9
	Computer, production, engineering and other equipment		768.3			753.8
	Software		376.5			369.1
	Furniture and fixtures		88.3			86.4
	Construction-in-progress		14			72.9
			2,222.40			2,192.50
	Accumulated depreciation and amortization		(1,124.4	)		(1,083.7	)
	Property and equipment, net	$	1,098.00		$	1,108.80
Computer Software, Net Book Value	'
	The net book value of software, which includes capitalized internal-use software development costs, is summarized below (in millions):
		July 25,			April 25,
		2014			2014
	Computer software	$	96.6		$	103.5
Other Non-Current Assets	'
	Other non-current assets (in millions):
		July 25,			April 25,
		2014			2014
	Auction rate securities	$	26.4		$	36
	Deferred tax assets		241			245
	Other assets		263.8			248.5
	Other non-current assets	$	531.2		$	529.5
Deferred Revenue	'
	Short-term and long-term deferred revenue (in millions):
		July 25,			April 25,
		2014			2014
	Product	$	31.9		$	23.4
	Software entitlements and maintenance and service		3,044.40			3,076.80
	Total	$	3,076.30		$	3,100.20
	Reported as:
	Short-term	$	1,656.40		$	1,653.80
	Long-term		1,419.90			1,446.40
	Total	$	3,076.30		$	3,100.20

Financial_Instruments_and_Fair1

Financial Instruments and Fair Value Measurements (Tables)	3 Months Ended
	Jul. 25, 2014
Summary of Investments	'
	The following is a summary of our investments (in millions):
			July 25, 2014											April 25, 2014
						Gross Unrealized										Gross Unrealized
			Cost or			Gains			Losses			Estimated		Cost or		Gains		Losses			Estimated
			Amortized									Fair Value		Amortized							Fair Value
			Cost											Cost
	Corporate bonds		$	1,905.80		$	8.5		$	(0.4	)	$	1,913.90	$	2,142.30	$	10.5	$	(0.5	)	$	2,152.30
	U.S. Treasury and government debt securities			227.1			0.3			(0.1	)		227.3		263.4		0.3		(0.1	)		263.6
	Commercial paper			174.5			0			0			174.5		168.4		0		0			168.4
	Certificates of deposit			370.3			0			0			370.3		245		0		0			245
	Auction rate securities			26.9			0			(0.5	)		26.4		36.9		0		(0.9	)		36
	Equity funds			33.5			0			0			33.5		32.7		0		0			32.7
	Total debt and equity securities		$	2,738.10		$	8.8		$	(1.0	)	$	2,745.90	$	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 July 25, 2014 (in millions):
			Amortized			Fair
			Cost			Value
	Due in one year or less		$	1,413.80		$	1,416.20
	Due in two through five years			1,263.90			1,269.80
	Due after ten years*			26.9			26.4
			$	2,704.60		$	2,712.40
	*	Consists of auction rate securities (ARSs) which have contractual maturities of greater than 10 years.
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):
			July 25, 2014
						Fair Value Measurements at Reporting Date Using
			Total			Quoted Prices			Significant			Significant
						in Active			Other			Unobservable
						Markets for			Observable			Inputs
						Identical Assets			Inputs			(Level 3)
						(Level 1)			(Level 2)
	Assets
	Corporate bonds		$	1,913.90		$	0		$	1,913.90		$	0
	U.S. Treasury and government debt securities			227.3			161.9			65.4			0
	Commercial paper			174.5			0			174.5			0
	Certificates of deposit			370.3			0			370.3			0
	Auction rate securities			26.4			0			0			26.4
	Equity funds			33.5			33.5			0			0
	Foreign currency contracts			3.2			0			3.2			0
	Total		$	2,749.10		$	195.4		$	2,527.30		$	26.4
	Liabilities
	Foreign currency contracts		$	(0.7	)	$	0		$	(0.7	)	$	0
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):
			July 25, 2014
						Fair Value Measurements at Reporting Date Using
			Total			Quoted Prices			Significant			Significant
						in Active			Other			Unobservable
						Markets for			Observable			Inputs
						Identical Assets			Inputs			(Level 3)
						(Level 1)			(Level 2)
	Assets
	Cash equivalents		$	153.4		$	0		$	153.4		$	0
	Short-term investments			2,532.60			161.9			2,370.70			0
	Other current assets			8.4			5.2			3.2			0
	Other non-current assets			54.7			28.3			0			26.4
	Total		$	2,749.10		$	195.4		$	2,527.30		$	26.4
	Liabilities
	Other current liabilities		$	(0.7	)	$	0		$	(0.7	)	$	0
Quantitative Information About Level 3 Fair Value Measurements	'
	Quantitative information about our Level 3 fair value measurements is as follows (fair value in millions):
			Estimated Fair			Valuation Techniques		Unobservable Inputs	Range
			Value as of						(Weighted average)
			July 25, 2014
	ARSs		$	26.4		Discounted cash flow		Time-to-economic maturity	6.7 yrs. – 9.4 yrs. (7.5 yrs.)
								Illiquidity premium	1.3% – 1.8% (1.5%)
								Coupon rate	1.1% – 1.8% (1.4%)
						Market comparable securities		Discount rate	1.0% – 2.0% (1.3%)
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 measured at fair value on a recurring basis using significant unobservable inputs (in millions).
			Three Months Ended
			July 25,			July 26,
			2014			2013
	Balance at beginning of period		$	36		$	42
	Total unrealized gains, net included in other comprehensive income (loss)			0.4			0.2
	Sales			(10.0	)		0
	Balance at end of period		$	26.4		$	42.2

Financing_Arrangements_Tables

Financing Arrangements (Tables)	3 Months Ended
	Jul. 25, 2014
Carrying Value of Long-Term Debt	'
	The following table summarizes the carrying value of our long-term debt (in millions):
		July 25, 2014						April 25, 2014
		Amount			Effective			Amount			Effective
					Interest Rate						Interest Rate
	2.00% Senior Notes due 2017	$	750			2.25	%	$	750			2.25	%
	3.375% Senior Notes due 2021		500			3.54	%		0			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		(5.9	)					(4.5	)
	Total long-term debt	$	1,494.10					$	995.5
	N/A - Not Applicable
Future Principal Debt Maturities	'
	As of July 25, 2014, 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):
		July 25,			April 25,
		2014			2014
	Other long-term financing arrangements	$	14.3		$	13.1
	Less: current portion		(7.1	)		(6.6	)
	Non-current portion of other long-term financing arrangements	$	7.2		$	6.5

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	3 Months Ended
	Jul. 25, 2014
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			36.29
	Exercised		(0.5	)		23.6
	Forfeited and expired		(0.2	)		41.43
	Outstanding as of July 25, 2014		15.8			34.68			3.75		$	93.1
	Vested and expected to vest as of July 25, 2014		15			34.58			3.63			91.6
	Exercisable as of July 25, 2014		10.4			33.33			2.63			81.1
Additional Information Related to Stock Options	'
	Additional information related to our stock options is summarized below (in millions):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Intrinsic value of exercises	$	7.2		$	27.4
	Proceeds received from exercises	$	13.4		$	56.8
	Fair value of options vested	$	8.7		$	12
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			Weighted-
		of Shares			Average
					Grant Date
					Fair Value
	Outstanding as of April 25, 2014		13.2		$	38.35
	Granted		5.3			34.93
	Vested		(2.9	)		38.79
	Forfeited		(0.7	)		38.14
	Outstanding as of July 25, 2014		14.9			37.06
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):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Shares withheld for taxes		0.9			0.9
	Fair value of shares withheld	$	33.9		$	35.3
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):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Shares issued under the ESPP		1.9			2
	Proceeds from issuance of shares	$	48.9		$	49.9
Stock-Based Compensation Expense	'
	Stock-based compensation expense is included in the condensed consolidated statements of operations as follows (in millions):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Cost of product revenues	$	1.5		$	1.3
	Cost of service revenues		4.4			4
	Sales and marketing		27			30.5
	Research and development		21.5			21.4
	General and administrative		7.9			9.1
	Total stock-based compensation expense	$	62.3		$	66.3
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):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Income tax benefit associated with employee stock transactions	$	43.4		$	8
Valuation Assumptions - Stock Options	'
	The fair value of stock options and ESPP purchase rights is estimated on the grant date using the Black-Scholes option pricing model and the following underlying weighted-average assumptions:
		Stock Options
		Three Months Ended
		July 25, 2014			July 26, 2013
	Expected term in years		4.8			4.8
	Risk-free interest rate		1.6	%		1	%
	Volatility		29	%		34	%
	Dividend yield		1.8	%		1.6	%
	Weighted-average fair value per share granted	$	8.19		$	9.78
Valuation Assumptions - ESPP	'
		ESPP
		Three Months Ended
		July 25, 2014			July 26, 2013
	Expected term in years		1.3			1.2
	Risk-free interest rate		0.2	%		0.2	%
	Volatility		27	%		32	%
	Dividend yield		1.8	%		1.6	%
	Weighted-average fair value per right granted	$	9.71		$	10.53
Valuation Assumptions - RSUs	'
	The weighted-average assumptions used to value RSUs are summarized as follows:
		Three Months Ended
		July 25, 2014			July 26, 2013
	Grant date fair value per share	$	34.93		$	38.16
	Expected dividend		1.8	%		1.6	%
Summary of Activities Related to Stock Repurchase Program	'
	The following table summarizes activity related to this program for the three months ended July 25, 2014 (in millions, except per share information):
	Number of shares repurchased		3.4
	Average price per share	$	34.82
	Aggregate purchase price	$	118.9
	Remaining authorization at end of period	$	1,005.9
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):
		Three Months Ended
		July 25, 2014			July 26, 2013
	Dividends per share declared and paid	$	0.165		$	0.150
	Dividend payments allocated to retained earnings	$	53.4		$	51.4
Reconciliation of Retained Earnings	'
	A reconciliation of retained earnings for the three months ended July 25, 2014 is as follows (in millions):
	Balance as of April 25, 2014	$	1.1
	Net income		88.4
	Dividends		(53.4	)
	Balance as of July 25, 2014	$	36.1
Accumulated Other Comprehensive Income (Loss) by Component Net of Tax	'
	Changes in accumulated other comprehensive income (AOCI) by component, net of tax, for the three months ended July 25, 2014 are summarized below (in millions):
		Foreign			Defined			Unrealized			Unrealized			Total
		Currency			Benefit			Gains on			Gains on
		Translation			Obligation			Available-			Derivative
		Adjustments			Adjustments			for-Sale			Instruments
								Securities
	Balance as of April 25, 2014	$	5.5		$	(4.8	)	$	8.9		$	(0.5	)	$	9.1
	Other comprehensive income (loss) (OCI) before reclassifications		(0.8	)		1			(1.6	)		(0.6	)		(2.0	)
	Amounts reclassified from AOCI, net of tax		0			0.1			0.2			1.7			2
	Net OCI		(0.8	)		1.1			(1.4	)		1.1			0
	Balance as of July 25, 2014	$	4.7		$	(3.7	)	$	7.5		$	0.6		$	9.1
Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss)	'
	The amounts reclassified out of AOCI are as follows (in millions):
		Three Months Ended
		July 25, 2014			July 26, 2013
	OCI Components	Amounts Reclassified from AOCI						Statements of Operations
								Location
	Recognized losses on defined benefit obligations	$	0.1		$	0			Operating expenses
	Realized (gains) losses on available-for-sale securities		0.2			(0.1	)		Other expense, net
	Realized (gains) losses on cash flow hedges		1.7			(1.0	)		Net revenues
	Total reclassifications	$	2		$	(1.1	)

Derivatives_and_Hedging_Activi1

Derivatives and Hedging Activities (Tables)	3 Months Ended
	Jul. 25, 2014
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):
		July 25,			April 25,
		2014			2014
	Cash Flow Hedges
	Forward contracts purchased	$	116.1		$	122.6
	Balance Sheet Contracts
	Forward contracts sold		167.6			155.5
	Forward contracts purchased		270.6			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, net on our condensed consolidated statements of operations was as follows (in millions):
		Three Months Ended
		July 25, 2014			July 26, 2013
		Gain (Loss) Recognized into Income
	Foreign exchange forward contracts	$	(0.8	)	$	0.2

Restructuring_and_Other_Charge1

Restructuring and Other Charges (Tables)	3 Months Ended
	Jul. 25, 2014
Activities Related to Restructuring Reserves	'
	Activities related to these plans are summarized as follows (in millions):
		Three Months Ended			Three Months Ended
		July 25, 2014			July 26, 2013
		(March 2014 Plan)			(May 2013 Plan)
	Balance at beginning of period	$	26.5		$	0
	Net charges		0			48.4
	Cash payments		(21.6	)		(24.6	)
	Balance at end of period	$	4.9		$	23.8

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Jul. 25, 2014
Effective Tax Rates	'
	Our effective tax rates for the periods presented were as follows:
		Three Months Ended
		July 25, 2014			July 26, 2013
	Effective tax rates		44.6	%		11.6	%
Unrecognized Tax Benefits	'
	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
		Three Months Ended
		July 25,			July 26,
		2014			2013
	Balance at beginning of period	$	235.9		$	189.6
	Additions based on tax positions related to the current year		6.8			7.2
	Additions for tax positions of prior years		98.7			1
	Decreases for tax positions of prior years		(18.6	)		(3.5	)
	Settlements		(45.5	)		0
	Balance at end of period	$	277.3		$	194.3

Net_Income_per_Share_Tables

Net Income per Share (Tables)	3 Months Ended
	Jul. 25, 2014
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
		July 25,		July 26,
		2014		2013
	Numerator:
	Net income	$	88.4	$	81.6
	Denominator:
	Shares used in basic computation		323.5		350.9
	Dilutive potential shares related to employee equity award plans		5.6		6.9
	Dilutive impact of assumed conversion of Convertible Notes		0		2.1
	Shares used in diluted computation		329.1		359.9
	Net Income per Share:
	Basic	$	0.27	$	0.23
	Diluted	$	0.27	$	0.23
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
		July 25,		July 26,
		2014		2013
	Employee equity award plans		8.5		6.6

Segment_Geographic_and_Signifi1

Segment, Geographic, and Significant Customer Information (Tables)	3 Months Ended
	Jul. 25, 2014
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
		July 25,			July 26,
		2014			2013
	Americas (United States, Canada and Latin America)	$	831.2		$	858.5
	Europe, Middle East and Africa		444.9			448
	Asia Pacific		213.1			209.7
	Net revenues	$	1,489.20		$	1,516.20
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):
		July 25,			April 25,
		2014			2014
	United States	$	1,089.60		$	688.5
	International		4,514.40			4,360.90
	Total	$	5,604.00		$	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):
		July 25,			April 25,
		2014			2014
	United States	$	1,005.30		$	1,021.40
	International		92.7			87.4
	Total	$	1,098.00		$	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
		July 25,			July 26,
		2014			2013
	Arrow Electronics, Inc.		22	%		21	%
	Avnet, Inc.		16	%		16	%
Schedule of Net Accounts Receivable from Significant Customers	'
	The following customers accounted for 10% or more of net accounts receivable:
		July 25,			April 25,
		2014			2014
	Arrow Electronics, Inc.		12	%		14	%
	Avnet, Inc.		11	%		16	%

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Jul. 25, 2014
Schedule of Product Warranty	'
	The following table summarizes the activity related to product warranty liabilities (in millions):
		Three Months Ended
		July 25,			July 26,
		2014			2013
	Balance at beginning of period	$	110		$	117.2
	Expense accrued during the period		10.5			24
	Warranty costs incurred		(16.4	)		(21.4	)
	Balance at end of period	$	104.1		$	119.8
Schedule of Warranty Liability Balances	'
	Product warranty liabilities were reported in our condensed consolidated balance sheets as follows (in millions):
		July 25,			April 25,
		2014			2014
	Other current liabilities	$	68.8		$	73
	Other long-term liabilities		35.3			37
	Total	$	104.1		$	110
Schedule of Financing Guarantees	'
	The following schedule of financing guarantees represents the total maximum potential future payments under financing arrangements with third parties and the related deferred revenue (in millions):
		July 25,			April 25,
		2014			2014
	Maximum guaranteed payment contingencies	$	213.2		$	205.8
	Deferred revenue associated with financing guarantees		(196.8	)		(193.1	)
	Net amount	$	16.4		$	12.7

Statements_of_Cash_Flows_Suppl

Statements of Cash Flows - Supplemental Cash Flows and Non Cash Investing and Financing Activities (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Non-cash Investing and Financing Activities:	'	'
Capital expenditures incurred but not paid	$11.50	$17.70
Acquisition of software through long-term financing	3.1	10.6
Supplemental Cash Flow Information:	'	'
Income taxes paid, net of refunds	68.2	19.1
Interest paid, net of capitalized interest	$11.70	$23

Purchased_Intangible_Assets_Ne2

Purchased Intangible Assets Net (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Assets	$288.50	$297.10
Accumulated Amortization	-181.5	-175.6
Net Assets	107	121.5
Developed Technology	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Assets	283	283
Accumulated Amortization	-176.9	-162.6
Net Assets	106.1	120.4
Customer Contracts/Relationships	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Assets	2.6	9.6
Accumulated Amortization	-2.1	-9
Net Assets	0.5	0.6
Trademarks And Trade Names	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Assets	2.9	2.9
Accumulated Amortization	-2.5	-2.4
Net Assets	0.4	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

Purchased_Intangible_Assets_Ne3

Purchased Intangible Assets, Net - Amortization Expense for Purchased Intangible Assets (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Amortization expense	$14.50	$14.90
Cost of revenues | Developed Technology	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Amortization expense	14.3	14.3
Operating expenses | Customer Contracts/Relationships	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Amortization expense	0.1	0.4
Operating expenses | Trademarks And Trade Names	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Amortization expense	0.1	0.1
Operating expenses | Covenants not to Compete	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Amortization expense	$0	$0.10

Purchased_Intangible_Assets_Ne4

Purchased Intangible Assets, Net - Future Amortization Expense Related to Purchased Intangible Assets (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Remainder of 2015	$43.40	'
2016	53.6	'
2017	6.7	'
2018	3.3	'
Net Assets	$107	$121.50

Balance_Sheet_Details_Cash_and

Balance Sheet Details - Cash and Cash Equivalents (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014	Jul. 26, 2013	Apr. 26, 2013
In Millions, unless otherwise specified
Cash and Cash Equivalents [Line Items]	'	'	'	'
Cash	$2,878.20	$2,174	'	'
Cash equivalents	153.4	117	'	'
Cash and cash equivalents	$3,031.60	$2,291	$1,796.80	$3,277.10

Balance_Sheet_Details_Inventor

Balance Sheet Details - Inventories (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Inventory [Line Items]	'	'
Purchased components	$17.10	$17.60
Finished goods	87.1	104.8
Inventories	$104.20	$122.40

Balance_Sheet_Details_Other_Cu

Balance Sheet Details - Other Current Assets (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Prepaid expenses and other current assets	$240.70	$219.40
Deferred tax assets	253.6	270.3
Other current assets	$494.30	$489.70

Balance_Sheet_Details_Property

Balance Sheet Details - Property and Equipment Net (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$2,222.40	$2,192.50
Accumulated depreciation and amortization	-1,124.40	-1,083.70
Property and equipment, net	1,098	1,108.80
Land	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	265.7	265.7
Buildings and building improvements	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	605.7	541.7
Leasehold Improvements	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	103.9	102.9
Computer, production, engineering and other equipment	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	768.3	753.8
Software	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	376.5	369.1
Furniture and Fixtures	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	88.3	86.4
Construction-in-progress	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$14	$72.90

Balance_Sheet_Details_Computer

Balance Sheet Details - Computer Software Net Book Value (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Capitalized Software [Line Items]	'	'
Computer software	$96.60	$103.50

Balance_Sheet_Details_Other_No

Balance Sheet Details - Other Non-Current Assets (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Auction rate securities	$26.40	$36
Deferred tax assets	241	245
Other assets	263.8	248.5
Other non-current assets	$531.20	$529.50

Balance_Sheet_Details_Deferred

Balance Sheet Details - Deferred Revenue (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Deferred Revenue Arrangement [Line Items]	'	'
Short-term	$1,656.40	$1,653.80
Long-term	1,419.90	1,446.40
Short-term and long-term deferred revenue, Total	3,076.30	3,100.20
Product	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Short-term and long-term deferred revenue, Total	31.9	23.4
Software entitlements and maintenance and service	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Short-term and long-term deferred revenue, Total	$3,044.40	$3,076.80

Financial_Instruments_and_Fair2

Financial Instruments and Fair Value Measurements - Summary of Investments (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	$2,738.10	$2,888.70
Gross unrealized gains	8.8	10.8
Gross unrealized losses	-1	-1.5
Estimated fair value	2,745.90	2,898
Corporate Bonds	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	1,905.80	2,142.30
Gross unrealized gains	8.5	10.5
Gross unrealized losses	-0.4	-0.5
Estimated fair value	1,913.90	2,152.30
U.S. Treasury And Government Debt Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	227.1	263.4
Gross unrealized gains	0.3	0.3
Gross unrealized losses	-0.1	-0.1
Estimated fair value	227.3	263.6
Commercial Paper	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	174.5	168.4
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	174.5	168.4
Certificates of Deposit	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	370.3	245
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	370.3	245
Auction Rate Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	26.9	36.9
Gross unrealized gains	0	0
Gross unrealized losses	-0.5	-0.9
Estimated fair value	26.4	36
Equity Funds	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	33.5	32.7
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	$33.50	$32.70

Financial_Instruments_and_Fair3

Financial Instruments and Fair Value Measurements - Contractual Maturities of Debt Investments (Detail) (USD $)	Jul. 25, 2014
In Millions, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'
Due in one year or less, Amortized Cost	$1,413.80
Due in two through five years, Amortized Cost	1,263.90
Due after ten years, Amortized Cost	26.9	[1]
Total, Amortized Cost	2,704.60
Due in one year or less, Estimated Fair Value	1,416.20
Due in two through five years, Estimated Fair Value	1,269.80
Due after ten years, Estimated Fair Value	26.4	[1]
Total, Estimated Fair Value	$2,712.40
[1]	Consists of auction rate securities (ARSs) which have contractual maturities of greater than 10 years.

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 $)	Jul. 25, 2014
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Foreign currency contracts	$3.20
Assets	2,749.10
Foreign currency contracts	-0.7
Corporate Bonds	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	1,913.90
U.S. Treasury And Government Debt Securities	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	227.3
Commercial Paper	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	174.5
Certificates of Deposit	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	370.3
Auction Rate Securities	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	26.4
Equity Funds	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	33.5
Quoted Prices in Active Markets for Identical Assets (Level 1)	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Foreign currency contracts	0
Assets	195.4
Foreign currency contracts	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate Bonds	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury And Government Debt Securities	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	161.9
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial Paper	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Certificates of Deposit	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Auction Rate Securities	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Funds	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	33.5
Significant Other Observable Inputs (Level 2)	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Foreign currency contracts	3.2
Assets	2,527.30
Foreign currency contracts	-0.7
Significant Other Observable Inputs (Level 2) | Corporate Bonds	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	1,913.90
Significant Other Observable Inputs (Level 2) | U.S. Treasury And Government Debt Securities	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	65.4
Significant Other Observable Inputs (Level 2) | Commercial Paper	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	174.5
Significant Other Observable Inputs (Level 2) | Certificates of Deposit	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	370.3
Significant Other Observable Inputs (Level 2) | Auction Rate Securities	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	0
Significant Other Observable Inputs (Level 2) | Equity Funds	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	0
Significant Unobservable Inputs (Level 3)	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Foreign currency contracts	0
Assets	26.4
Foreign currency contracts	0
Significant Unobservable Inputs (Level 3) | Corporate Bonds	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	0
Significant Unobservable Inputs (Level 3) | U.S. Treasury And Government Debt Securities	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	0
Significant Unobservable Inputs (Level 3) | Commercial Paper	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	0
Significant Unobservable Inputs (Level 3) | Certificates of Deposit	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	0
Significant Unobservable Inputs (Level 3) | Auction Rate Securities	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets	26.4
Significant Unobservable Inputs (Level 3) | Equity Funds	'
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 $)	Jul. 25, 2014
In Millions, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Cash equivalents	$153.40
Short-term investments	2,532.60
Assets	2,749.10
Other current liabilities	-0.7
Other Current Assets	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Other assets	8.4
Other Noncurrent Assets	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Other assets	54.7
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	161.9
Assets	195.4
Other current liabilities	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Current Assets	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Other assets	5.2
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Noncurrent Assets	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Other assets	28.3
Significant Other Observable Inputs (Level 2)	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Cash equivalents	153.4
Short-term investments	2,370.70
Assets	2,527.30
Other current liabilities	-0.7
Significant Other Observable Inputs (Level 2) | Other Current Assets	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Other assets	3.2
Significant Other Observable Inputs (Level 2) | Other Noncurrent Assets	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Other assets	0
Significant Unobservable Inputs (Level 3)	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Cash equivalents	0
Short-term investments	0
Assets	26.4
Other current liabilities	0
Significant Unobservable Inputs (Level 3) | Other Current Assets	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Other assets	0
Significant Unobservable Inputs (Level 3) | Other Noncurrent Assets	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Other assets	$26.40

Financial_Instruments_and_Fair6

Financial Instruments and Fair Value Measurements - Quantitative Information About Level Three Fair Value Measurements (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
ARSs Fair Value	2,749.10
Auction Rate Securities	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
ARSs Fair Value	26.4
Significant Unobservable Inputs (Level 3)	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
ARSs Fair Value	26.4
Significant Unobservable Inputs (Level 3) | Auction Rate Securities	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
ARSs Fair Value	26.4
Minimum | Discounted Cash Flow	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Time-to-economic maturity	'6 years 8 months 12 days
Illiquidity premium	1.30%
Coupon rate	1.10%
Minimum | Market Comparable Securities	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Discount rate	1.00%
Maximum | Discounted Cash Flow	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Time-to-economic maturity	'9 years 4 months 24 days
Illiquidity premium	1.80%
Coupon rate	1.80%
Maximum | Market Comparable Securities	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Discount rate	2.00%
Weighted Average | Discounted Cash Flow	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Time-to-economic maturity	'7 years 6 months
Illiquidity premium	1.50%
Coupon rate	1.40%
Weighted Average | Market Comparable Securities	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Discount rate	1.30%

Financial_Instruments_and_Fair7

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
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Balance at beginning of period	$36	$42
Total unrealized gains, net included in other comprehensive income (loss)	0.4	0.2
Sales	-10	0
Balance at end of period	$26.40	$42.20

Financial_Instruments_and_Fair8

Financial Instruments and Fair Value Measurements - Additional Information (Detail) (Significant Other Observable Inputs (Level 2), Senior Notes, USD $)	Jul. 25, 2014
In Millions, unless otherwise specified
Significant Other Observable Inputs (Level 2) | Senior Notes	'
Fair Value of Financial Instruments [Line Items]	'
Long-term Debt	$1,506.40

Financing_Arrangements_Carryin

Financing Arrangements - Carrying Value of Long-Term Debt (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'	'
Long-term debt face amount	$1,500	$1,000
Less: Unamortized discount	-5.9	-4.5
Total long-term debt	1,494.10	995.5
Senior Notes Due 2017	'	'
Debt Instrument [Line Items]	'	'
Long-term debt face amount	750	750
Debt Instrument, Interest Rate, Effective Percentage	2.25%	2.25%
Senior Notes Due 2021	'	'
Debt Instrument [Line Items]	'	'
Long-term debt face amount	500	0
Debt Instrument, Interest Rate, Effective Percentage	3.54%	'
Senior Notes due 2022	'	'
Debt Instrument [Line Items]	'	'
Long-term debt face amount	$250	$250
Debt Instrument, Interest Rate, Effective Percentage	3.43%	3.43%

Financing_Arrangements_Additio

Financing Arrangements - Additional Information (Detail) (USD $)	3 Months Ended
	Jul. 25, 2014	Jul. 26, 2013	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	'
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%	'	'
Senior Notes	'	'	'
Debt Instrument [Line Items]	'	'	'
Note repurchase price, percentage of principal amount of notes	101.00%	'	'
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%	'	'
Revolving Credit Facility | Maximum	'	'	'
Debt Instrument [Line Items]	'	'	'
Credit facility, base rate	1.20%	'	'
Revolving Credit Facility | Maximum Leverage Ratio	'	'	'
Debt Instrument [Line Items]	'	'	'
Covenant Terms	'3.0:1.0	'	'
Revolving Credit Facility | Minimum Interest Coverage Ratio	'	'	'
Debt Instrument [Line Items]	'	'	'
Covenant Terms	'3.5:1.0	'	'
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 Subfacility	'	'	'
Debt Instrument [Line Items]	'	'	'
Credit facility, amount	$10,000,000	'	'

Financing_Arrangements_Future_

Financing Arrangements - Future Principal Debt Maturities (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'	'
2018	$750	'
Thereafter	750	'
Total	$1,500	$1,000

Financing_Arrangements_Amounts

Financing Arrangements - Amounts Due under Other Long-Term Financing Arrangements (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Debt Outstanding [Line Items]	'	'
Other long-term financing arrangements	$14.30	$13.10
Less: current portion	-7.1	-6.6
Non-current portion of other long-term financing arrangements	$7.20	$6.50

Stockholders_Equity_Activity_R

Stockholders Equity - Activity Related to Stock Options (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jul. 25, 2014
Number of Shares	'
Beginning balance, Number of Shares	14.5
Options granted, Number of Shares	2
Options exercised, Number of Shares	-0.5
Options forfeited and expired, Number of Shares	-0.2
Ending balance, Number of Shares	15.8
Options vested and expected to vest, Number of Shares	15
Options Exercisable, Number of Shares	10.4
Weighted-Average Exercise Price	'
Beginning balance, Weighted-Average Exercise Price	$34.10
Options granted, Weighted-Average Exercise Price	$36.29
Options exercised, Weighted-Average Exercise Price	$23.60
Options forfeited and expired, Weighted-Average Exercise Price	$41.43
Ending balance, Weighted-Average Exercise Price	$34.68
Options vested and expected to vest, Weighted-Average Exercise Price	$34.58
Options Exercisable, Weighted-Average Exercise Price	$33.33
Weighted-Average Remaining Contractual Term	'
Outstanding, Weighted-Average Remaining Contractual Term	'3 years 9 months
Options vested and expected to vest, Weighted-Average Remaining Contractual Term	'3 years 7 months 17 days
Exercisable, Weighted-Average Remaining Contractual Term	'2 years 7 months 17 days
Aggregate Intrinsic Value	'
Outstanding, Aggregate Intrinsic Value	$93.10
Options vested and expected to vest, Aggregate Intrinsic Value	91.6
Exercisable, Aggregate Intrinsic Value	$81.10

Stockholders_Equity_Additional

Stockholders Equity - Additional Information Related to Stock Options (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Intrinsic value of exercises	$7.20	$27.40
Proceeds received from exercises	13.4	56.8
Fair value of options vested	$8.70	$12

Stockholders_Equity_Activity_R1

Stockholders Equity - Activity Related to Restricted Stock Units (Detail) (Restricted Stock Units, USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
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	5.3	'
RSUs vested, Number of Shares	-2.9	'
RSUs forfeited, Number of Shares	-0.7	'
Ending Balance, Number of Shares	14.9	'
Beginning Balance, Weighted-Average Grant Date Fair Value	$38.35	'
RSUs granted, Weighted-Average Grant Date Fair Value	$34.93	$38.16
RSUs vested, Weighted-Average Grant Date Fair Value	$38.79	'
RSUs forfeited, Weighted-Average Grant Date Fair Value	$38.14	'
Ending Balance, Weighted-Average Grant Date Fair Value	$37.06	'

Stockholders_Equity_Number_and

Stockholders Equity - Number and Value of Shares Netted for Employee Taxes (Detail) (Restricted Stock Units, USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Restricted Stock Units	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shares withheld for taxes	0.9	0.9
Fair value of shares withheld	$33.90	$35.30

Stockholders_Equity_Schedule_o

Stockholders Equity - Schedule of Employee Stock Purchase Plan ESPP (Detail) (Employee Stock Purchase Plan, USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Employee Stock Purchase Plan	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shares issued under the ESPP	1.9	2
Proceeds from issuance of shares	$48.90	$49.90

Stockholders_Equity_StockBased

Stockholders Equity - Stock-Based Compensation Expense (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total stock-based compensation expense	$62.30	$66.30
Cost of Product Revenues	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total stock-based compensation expense	1.5	1.3
Cost of Service Revenues	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total stock-based compensation expense	4.4	4
Sales and Marketing	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total stock-based compensation expense	27	30.5
Research and Development	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total stock-based compensation expense	21.5	21.4
General and Administrative	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total stock-based compensation expense	$7.90	$9.10

Stockholders_Equity_Additional1

Stockholders' Equity - Additional Information (Detail) (USD $)	3 Months Ended			0 Months Ended
	Jul. 25, 2014	Jul. 26, 2013	Jul. 25, 2014	Aug. 13, 2014
			Open Market Repurchase	Subsequent Event
				Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Unrecognized compensation expense related to equity awards	$507,800,000	'	'	'
Unrecognized compensation expense will be amortized on a straight-line basis over a weighted-average remaining period, in years	'2 years 8 months 12 days	'	'	'
Stock repurchase program, authorized amount	7,100,000,000	'	'	'
Allocation of purchase price of share repurchases	$118,900,000	'	$118,900,000	'
Cash dividend per share of common stock	$0.17	$0.15	'	$0.17
Cash dividend payable date	'	'	'	22-Oct-14
Cash dividend record date	'	'	'	10-Oct-14

Stockholders_Equity_Income_Tax

Stockholders Equity - Income Tax Effects Associated with Employee Stock Transactions (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Tax Benefit (Deficiency) Associated with Share Based Compensation Plan [Line Items]	'	'
Income tax benefit associated with employee stock transactions	$43.40	$8

Stockholders_Equity_Valuation_

Stockholders Equity - Valuation Assumptions (Detail) (USD $)	3 Months Ended
	Jul. 25, 2014	Jul. 26, 2013
Stock Options	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Expected term in years	'4 years 9 months 18 days	'4 years 9 months 18 days
Risk-free interest rate	1.60%	1.00%
Volatility	29.00%	34.00%
Dividend yield	1.80%	1.60%
Weighted-average fair value per share granted	$8.19	$9.78
Employee Stock Purchase Plan	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Expected term in years	'1 year 3 months 18 days	'1 year 2 months 12 days
Risk-free interest rate	0.20%	0.20%
Volatility	27.00%	32.00%
Dividend yield	1.80%	1.60%
Weighted-average fair value per right granted	$9.71	$10.53

Stockholders_Equity_Valuation_1

Stockholders Equity - Valuation Assumptions - RSUs (Detail) (Restricted Stock Units, USD $)	3 Months Ended
	Jul. 25, 2014	Jul. 26, 2013
Restricted Stock Units	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Grant date fair value per share	$34.93	$38.16
Expected dividend	1.80%	1.60%

Stockholders_Equity_Summary_of

Stockholders Equity - Summary of Activities Related to Stock Repurchase Program (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jul. 25, 2014
Equity, Class of Treasury Stock [Line Items]	'
Number of shares repurchased	3.4
Average price per share	$34.82
Aggregate purchase price	$118.90
Remaining authorization at end of period	$1,005.90

Summary_of_Activities_Related_

Summary of Activities Related to Dividends on Common Stock (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Dividends, Common Stock [Abstract]	'	'
Dividends per share declared and paid	$0.17	$0.15
Dividend payments allocated to retained earnings	$53.40	$51.40
Retained Earnings	'	'
Dividends, Common Stock [Abstract]	'	'
Dividend payments allocated to retained earnings	$53.40	$51.40

Stockholders_Equity_Reconcilia

Stockholders' Equity - Reconciliation of Retained Earnings (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Retained Earnings Adjustments [Line Items]	'	'
Beginning balance	$1.10	'
Net income	88.4	81.6
Dividends	-53.4	-51.4
Ending balance	36.1	'
Retained Earnings	'	'
Retained Earnings Adjustments [Line Items]	'	'
Dividends	($53.40)	($51.40)

Stockholders_Equity_Accumulate

Stockholders Equity - Accumulated Other Comprehensive Income (Loss) by Component Net of Tax (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Beginning balance	$9.10	'
Other comprehensive income (loss) (OCI) before reclassifications	-2	'
Amounts reclassified from AOCI, net of tax	2	'
Other comprehensive income (loss)	0	-10
Ending balance	9.1	'
Foreign Currency Translation Adjustments	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Beginning balance	5.5	'
Other comprehensive income (loss) (OCI) before reclassifications	-0.8	'
Amounts reclassified from AOCI, net of tax	0	'
Other comprehensive income (loss)	-0.8	'
Ending balance	4.7	'
Defined Benefit Obligation Adjustments	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Beginning balance	-4.8	'
Other comprehensive income (loss) (OCI) before reclassifications	1	'
Amounts reclassified from AOCI, net of tax	0.1	'
Other comprehensive income (loss)	1.1	'
Ending balance	-3.7	'
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	-1.6	'
Amounts reclassified from AOCI, net of tax	0.2	'
Other comprehensive income (loss)	-1.4	'
Ending balance	7.5	'
Unrealized Gains (Losses) on Derivative Instruments	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Beginning balance	-0.5	'
Other comprehensive income (loss) (OCI) before reclassifications	-0.6	'
Amounts reclassified from AOCI, net of tax	1.7	'
Other comprehensive income (loss)	1.1	'
Ending balance	$0.60	'

Stockholders_Equity_Amounts_Re

Stockholders Equity - Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Operating expenses	$778.20	$812.70
Other expense, net	0.5	1.9
Net revenues	1,489.20	1,516.20
Net income	88.4	81.6
Reclassification out of Accumulated Other Comprehensive Income	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Net income	2	-1.1
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
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 expense, net	0.2	-0.1
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	$1.70	($1)

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 $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Cash Flow Hedging | Long	'	'
Derivative [Line Items]	'	'
Forward contracts, Notional Amount	$116.10	$122.60
Non Designated | Long	'	'
Derivative [Line Items]	'	'
Forward contracts, Notional Amount	270.6	389.9
Non Designated | Short	'	'
Derivative [Line Items]	'	'
Forward contracts, Notional Amount	$167.60	$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
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Foreign Exchange Forward Contracts	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Foreign currency exchange forward contracts	($0.80)	$0.20

Restructuring_and_Other_Charge2

Restructuring and Other Charges - Additional Information (Detail)	Mar. 31, 2014	31-May-13
Restructuring Cost and Reserve [Line Items]	'	'
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
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Restructuring Cost and Reserve [Line Items]	'	'
Net charges	$0	$48.40
May 2013 Restructuring	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Balance at beginning of period	'	0
Net charges	'	48.4
Cash payments	'	-24.6
Balance at end of period	'	23.8
March 2014 Restructuring	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Balance at beginning of period	26.5	'
Net charges	0	'
Cash payments	-21.6	'
Balance at end of period	$4.90	'

Income_Taxes_Effective_Tax_Rat

Income Taxes - Effective Tax Rates (Detail)	3 Months Ended
	Jul. 25, 2014	Jul. 26, 2013
Income Tax Disclosure [Abstract]	'	'
Effective tax rates	44.60%	11.60%

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Apr. 25, 2014	Jul. 26, 2013	Apr. 26, 2013
Income Tax Contingency [Line Items]	'	'	'	'
Resolution of income tax examinations	$47.40	'	'	'
Expected refund, excluding interest from fiscal 2005 to 2007 income tax audit	8	'	'	'
Gross unrecognized tax benefits	277.3	235.9	194.3	189.6
Unrecognized tax benefits included in other long-term liabilities	223.6	'	'	'
Unrecognized tax benefits that would affect provision for income taxes	$172.90	'	'	'

Income_Taxes_Unrecognized_Tax_

Income Taxes - Unrecognized Tax Benefits (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Income Tax Contingency [Line Items]	'	'
Balance at beginning of period	$235.90	$189.60
Additions based on tax positions related to the current year	6.8	7.2
Additions for tax positions of prior years	98.7	1
Decreases for tax positions of prior years	-18.6	-3.5
Settlements	-45.5	0
Balance at end of period	$277.30	$194.30

Net_Income_per_Share_Computati

Net Income per Share - Computation of Basic and Diluted Net Income Per Share (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Net income per share:	'	'
Net income	$88.40	$81.60
Shares used in basic computation	323.5	350.9
Dilutive potential shares related to employee equity award plans	5.6	6.9
Dilutive impact of assumed conversion of Convertible Notes	0	2.1
Shares used in diluted computation	329.1	359.9
Basic	$0.27	$0.23
Diluted	$0.27	$0.23

Net_Income_per_Share_AntiDilut

Net Income per Share - Anti-Dilutive Shares Excluded from Calculation of Net Income Per Share (Detail)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Employee equity award plans	8.5	6.6

Segment_Geographic_and_Signifi2

Segment Geographic and Significant Customer Information - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
	Segment	Segment
Segment Reporting Information [Line Items]	'	'
Number of industry segment	1	1
Net revenues	$1,489.20	$1,516.20
United States	'	'
Segment Reporting Information [Line Items]	'	'
Net revenues	$746.20	$772.80

Segment_Geographic_and_Signifi3

Segment Geographic and Significant Customer Information - Schedule of Revenues by Geographic Region (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Segment Reporting Information [Line Items]	'	'
Net revenues	$1,489.20	$1,516.20
Americas (United States, Canada And Latin America)	'	'
Segment Reporting Information [Line Items]	'	'
Net revenues	831.2	858.5
Europe, Middle East And Africa	'	'
Segment Reporting Information [Line Items]	'	'
Net revenues	444.9	448
Asia Pacific	'	'
Segment Reporting Information [Line Items]	'	'
Net revenues	$213.10	$209.70

Segment_Geographic_and_Signifi4

Segment Geographic and Significant Customer Information - Schedule of Total Cash, Cash Equivalents, Restricted Cash and Investments (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Segment Reporting Information [Line Items]	'	'
Cash, cash equivalents, restricted cash and investments	$5,604	$5,049.40
United States	'	'
Segment Reporting Information [Line Items]	'	'
Cash, cash equivalents, restricted cash and investments	1,089.60	688.5
International	'	'
Segment Reporting Information [Line Items]	'	'
Cash, cash equivalents, restricted cash and investments	$4,514.40	$4,360.90

Segment_Geographic_and_Signifi5

Segment Geographic and Significant Customer Information - Schedule of Property and Equipment Net by Geographic Areas (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Property and equipment	$1,098	$1,108.80
United States	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Property and equipment	1,005.30	1,021.40
International	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Property and equipment	$92.70	$87.40

Segment_Geographic_and_Signifi6

Segment Geographic and Significant Customer Information - Significant Customers (Detail) (Net Revenue)	3 Months Ended
	Jul. 25, 2014	Jul. 26, 2013
Arrow Electronics, Inc.	'	'
Segment Reporting Information [Line Items]	'	'
Percentage of net revenues	22.00%	21.00%
Avnet, Inc.	'	'
Segment Reporting Information [Line Items]	'	'
Percentage of net revenues	16.00%	16.00%

Segment_Geographic_and_Signifi7

Segment Geographic and Significant Customer Information - Schedule of Net Accounts Receivable from Significant Customers (Detail)	Jul. 25, 2014	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	11.00%	16.00%

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014	Jul. 25, 2014	Jul. 25, 2014	Jul. 25, 2014	Jul. 25, 2014	Jul. 25, 2014	Jul. 25, 2014
In Millions, unless otherwise specified			Software	Hardware	Maximum	Capital Purchase Commitments	Other Purchase Commitments	Contract Manufacturers
Commitments and Contingencies Disclosure [Line Items]	'	'	'	'	'	'	'	'
Future annual minimum lease payments	$213.60	'	'	'	'	'	'	'
Accrued purchase commitments with contract manufacturers	10.4	11.5	'	'	'	'	'	'
Purchase commitments	'	'	'	'	'	$36.40	$180.20	$239.30
Product warranty term	'	'	'90 days	'3 years	'	'	'	'
Terms of recourse leases	'	'	'	'	'3 years	'	'	'

Commitments_and_Contingencies_2

Commitments and Contingencies - Schedule of Warranty Liability (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jul. 25, 2014	Jul. 26, 2013
Movement in Standard Product Warranty Accrual [Roll Forward]	'	'
Balance at beginning of period	$110	$117.20
Expense accrued during the period	10.5	24
Warranty costs incurred	-16.4	-21.4
Balance at end of period	$104.10	$119.80

Commitments_and_Contingencies_3

Commitments and Contingencies - Schedule of Warranty Liability Balances (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014	Jul. 26, 2013	Apr. 26, 2013
In Millions, unless otherwise specified
Standard Product Warranty Accrual, Balance Sheet Classification [Abstract]	'	'	'	'
Other current liabilities	$68.80	$73	'	'
Other long-term liabilities	35.3	37	'	'
Total	$104.10	$110	$119.80	$117.20

Commitments_and_Contingencies_4

Commitments and Contingencies - Schedule of Maximum Potential Future Payments under Financing Arrangements with Third Parties (Detail) (USD $)	Jul. 25, 2014	Apr. 25, 2014
In Millions, unless otherwise specified
Guarantor Obligations [Line Items]	'	'
Maximum guaranteed payment contingencies	$213.20	$205.80
Deferred revenue associated with financing guarantees	-3,076.30	-3,100.20
Net amount	16.4	12.7
Financing Guarantee	'	'
Guarantor Obligations [Line Items]	'	'
Deferred revenue associated with financing guarantees	($196.80)	($193.10)