Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Name Accounting Standards Codification

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-Number 210

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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Income Taxes - Statutory Federal Income Tax Rate (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Apr. 25, 2014	Jan. 24, 2014	Oct. 25, 2013	Jul. 26, 2013	Apr. 26, 2013	Jan. 25, 2013	Oct. 26, 2012	Jul. 27, 2012	Apr. 25, 2014	Apr. 26, 2013	Apr. 27, 2012
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Tax computed at federal statutory rate									$ 259.2	$ 198.3	$ 249.4
State income taxes, net of federal benefit									5.6	(2.0)	6.4
Foreign earnings in lower tax jurisdictions									(163.3)	(144.4)	(162.2)
Stock-based compensation									9.8	18.4	14.4
Research and experimentation credits									(8.7)	(12.1)	(10.9)
Resolution of income tax examinations									0	0.1	7.3
Other									0.6	3.0	2.6
Provision for income taxes	$ 29.6	$ 37.5	$ 25.4	$ 10.7	$ 15.1	$ 17.7	$ 18.1	$ 10.4	$ 103.2	$ 61.3	$ 107.0