Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 26, 2012	Oct. 28, 2011	Oct. 26, 2012	Oct. 28, 2011
Statement of Income and Comprehensive Income [Abstract]
Net earnings	$ 646	$ 871	$ 1,510	$ 1,692
Other comprehensive income/(loss), net of tax:
Unrealized gain/(loss) on investments, net of tax expense/(benefit) of $1, $(28), $4, and $28, respectively	1	(57)	7	48
Translation adjustment	89	(97)	(27)	(83)
Net change in retirement obligations, net of tax expense of $6, $6, $19 and $12, respectively	5	15	35	23
Unrealized gain/(loss) on derivatives, net of tax expense/(benefit) of $(36), $42, $(16) and $48, respectively	(64)	67	(26)	80
Other comprehensive income/(loss)	31	(72)	(11)	68
Comprehensive income	$ 677	$ 799	$ 1,499	$ 1,760