Income Taxes 6 (Details) (USD $)	12 Months Ended			3 Months Ended				12 Months Ended		12 Months Ended
	Apr. 28, 2013	Apr. 29, 2012	Apr. 27, 2011	Oct. 28, 2012 Tax Free Reorganization [Member] Foreign Subsidiary [Member]	Oct. 28, 2012 Assets Revaluation [Member] Foreign Subsidiary [Member]	Jul. 29, 2012 Assets Revaluation [Member] Foreign Subsidiary [Member]	Oct. 26, 2011 Assets Revaluation [Member] Foreign Subsidiary [Member]	Apr. 28, 2013 Assets Revaluation [Member] Foreign Subsidiary [Member]	Apr. 29, 2012 Assets Revaluation [Member] Foreign Subsidiary [Member]	Apr. 28, 2013 United Kingdom [Member]	Apr. 29, 2012 United Kingdom [Member]
Income Tax Contingency [Line Items]
Income Tax Effects Allocated Directly to Equity, Employee Stock Options	$ 20,800,000	$ 16,800,000	$ 21,400,000
Tax benefit from reversal of uncertain tax liability	15,000,000
Income Tax Expense (Benefit)	241,598,000	244,966,000	370,817,000	63,000,000		12,900,000	34,900,000
Increase (Decrease) in Deferred Tax Assets						82,100,000	220,200,000
Taxes Payable, Current and Noncurrent, Gross								13,100,000	34,800,000
Payments for Other Taxes					17,900,000		10,400,000
Taxes Payable, Current	114,230,000	101,540,000						16,000,000
Cash Taxes, Tax Amortization Period				10 years				20 years
Cash Taxes, Expected Adjustment				91,000,000				95,000,000
Foreign Deferred Tax Assets and Valuation Allowances Related to Internally Generated Intangible Assets	117,900,000
Deferred Tax Assets related to business classified as held for sale	55,100,000
Deferred Tax Liabilities related to business classified as held for sale	5,200,000
Valuation Allowance related to business classified as held for sale	54,300,000
Operating Loss Carryforwards Foreign	309,500,000
Operating Loss Carry Forwards Foreign Expiring Current Through Twenty Years	86,600,000
Operating Loss Carryforwards Foreign Do Not Expire	222,900,000
Deferred Tax Assets, Operating Loss Carryforwards	75,300,000
Operating Loss Carryforwards State	9,700,000
Valuation Allowance, Deferred Tax Asset, Change in Amount	44,500,000	26,200,000	1,900,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	38,300,000	38,900,000
Unrecognized Tax Benefits, Interest on Income Taxes Expense	4,200,000	9,500,000	1,300,000
Unrecognized Tax Benefits, Income Tax Penalties Expense	6,300,000	4,700,000	100,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	8,500,000	16,000,000
Unrecognized Tax Benefits, Income Tax Penalties Accrued	6,900,000	13,800,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	16,900,000
Undistributed Earnings of Foreign Subsidiaries	5,700,000,000
Taxes Payable, Due in Year Three								$ 4,000,000
Tax on income of foreign subsidiaries	(7.70%)	(8.70%)	(5.60%)							(2.00%)	(2.00%)