Schedule II (Details) - USD ($)	12 Months Ended
	Apr. 24, 2015	Apr. 25, 2014	Apr. 26, 2013
Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Fiscal Year	$ 115,000,000	$ 98,000,000	$ 100,000,000
Charges to Income	35,000,000	43,000,000	51,000,000
Charges to Other Accounts	34,000,000	0	0
Other Changes (Debit) Credit	(36,000,000)	(30,000,000)	(53,000,000)
Effects of Foreign Currency	(4,000,000)	4,000,000	0
Balance at End of Fiscal Year	144,000,000	115,000,000	98,000,000
Deferred Tax Valuation Allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Fiscal Year	397,000,000	313,000,000	258,000,000
Charges to Income	40,000,000	104,000,000	71,000,000
Charges to Other Accounts	5,660,000,000	5,000,000	0
Other Changes (Debit) Credit	(56,000,000)	(29,000,000)	(15,000,000)
Effects of Foreign Currency	(434,000,000)	4,000,000	(1,000,000)
Balance at End of Fiscal Year	$ 5,607,000,000	$ 397,000,000	$ 313,000,000