CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
Apr. 24, 2015	Apr. 25, 2014	Apr. 26, 2013
Cash flows from operating activities:
Net income	$ 559.9us-gaap_NetIncomeLoss	$ 637.5us-gaap_NetIncomeLoss	$ 505.3us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	307.2us-gaap_DepreciationAndAmortization	334.1us-gaap_DepreciationAndAmortization	344.6us-gaap_DepreciationAndAmortization
Stock-based compensation	259.3us-gaap_ShareBasedCompensation	273.0us-gaap_ShareBasedCompensation	276.6us-gaap_ShareBasedCompensation
Accretion of discount and issuance costs on long-term debt	2.7	9.7	60.2
Deferred income taxes	(2.7)us-gaap_DeferredIncomeTaxExpenseBenefit	(76.0)us-gaap_DeferredIncomeTaxExpenseBenefit	(76.6)us-gaap_DeferredIncomeTaxExpenseBenefit
Excess tax benefit from stock-based compensation	(55.2)	(52.5)	(72.9)
Other non-cash items, net	31.9us-gaap_OtherNoncashIncomeExpense	17.6us-gaap_OtherNoncashIncomeExpense	70.6us-gaap_OtherNoncashIncomeExpense
Changes in assets and liabilities, net of acquisitions of businesses:
Accounts receivable	74.8	(56.6)	23.1
Inventories	(24.1)us-gaap_IncreaseDecreaseInInventories	17.0us-gaap_IncreaseDecreaseInInventories	22.0us-gaap_IncreaseDecreaseInInventories
Other operating assets	13.0	74.6	(77.3)
Accounts payable	38.6	(12.1)	25.1
Accrued expenses	(66.7)	32.3	53.5
Deferred revenue	122.1	106.6	198.1
Other operating liabilities	7.3	44.4	34.0
Net cash provided by operating activities	1,268.1	1,349.6	1,386.3
Cash flows from investing activities:
Purchases of investments	(2,596.8)	(1,018.5)	(2,287.7)
Maturities, sales and collections of investments	1,952.0	1,993.5	2,464.7
Purchases of property and equipment	(175.3)	(221.4)	(303.3)
Acquisitions of businesses	(84.6)	0	(106.5)
Other investing activities, net	1.5	6.8	4.2
Net cash provided by (used in) investing activities	(903.2)	760.4	(228.6)
Cash flows from financing activities:
Issuance of common stock under employee stock award plans	156.9	201.4	110.6
Repurchase of common stock and forward contract	(1,165.2)	(1,881.5)	(590.0)
Excess tax benefit from stock-based compensation	55.2	52.5	72.9
Repayment of debt	0us-gaap_RepaymentsOfLongTermDebt	(1,264.9)us-gaap_RepaymentsOfLongTermDebt	0us-gaap_RepaymentsOfLongTermDebt
Issuance of long-term debt, net	494.7	0	987.3
Dividends paid	(207.4)us-gaap_PaymentsOfDividends	(202.3)us-gaap_PaymentsOfDividends	0us-gaap_PaymentsOfDividends
Other financing activities, net	(9.4)	(9.2)	(1.9)
Net cash provided by (used in) financing activities	(675.2)	(3,104.0)	578.9
Effect of exchange rate changes on cash and cash equivalents	(59.2)	7.9	(9.3)
Net increase (decrease) in cash and cash equivalents	(369.5)	(986.1)	1,727.3
Cash and cash equivalents:
Beginning of year	2,291.0	3,277.1	1,549.8
End of year	$ 1,921.5	$ 2,291.0	$ 3,277.1

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-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

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- Definition

The total cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

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- Definition

Amount of cash inflow (outflow) from other long-term debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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