Income Tax 6 (Details) (USD $)	12 Months Ended
	Apr. 27, 2011	Apr. 28, 2010	Apr. 29, 2009
Income Taxes Textuals Abstract
Tax benefits related to stock options and other equity investments	$ 21,400,000	$ 9,300,000	$ 17,600,000
Foreign deferred tax assets and valuation allowances related to internally generated intangible assets	135,100,000
Operating loss carryforwards, foreign	419,200,000
Operating loss carryforwards, foreign, expiring between 2012 and 2031	288,800,000
Operating loss carryforwards, foreign, do not expire	130,400,000
Tax credit carryforwards, deferred tax assets, foreign	18,100,000
Operating loss carryforwards, state	12,600,000
Valuation allowance amount increased	1,900,000	3,400,000	7,100,000
Unrecognized tax benefits that would impact effective tax rate	56,500,000	38,200,000
Total amount of gross interest benefits/(expenses) included in provision for income taxes	1,300,000	5,200,000	(3,100,000)
Total amount of gross penalty expense included in provision for income taxes as benefits	100,000	1,000,000	600,000
Unrecognized tax benefits, interest on income taxes accrued	27,300,000	17,300,000
Unrecognized tax benefits, income tax penalties accrued	21,100,000	1,200,000
Significant change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit	17,900,000
Effective settlement resulted of tax adjustments and unusual provisions			42,700,000
Federal tax settlement recorded to additional capital			8,500,000
Undistributed earnings of foreign subsidiaries considered to be indefinitely reinvested	$ 4,400,000,000