Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 25, 2013	Oct. 26, 2012	Oct. 25, 2013	Oct. 26, 2012
Statement of Other Comprehensive Income [Abstract]
Net earnings	$ 902	$ 646	$ 1,855	$ 1,510
Other comprehensive income/(loss), net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax expense (benefit) of $17, $1, $(37), and $4, respectively	31	1	(64)	7
Translation adjustment	56	89	51	(27)
Net change in retirement obligations, net of tax expense (benefit) of $8, $6, $17, and $19, respectively	15	5	29	35
Unrealized loss on derivatives, net of tax expense (benefit) of $(53), $(36), $(52), and $16, respectively	(93)	(64)	(91)	(26)
Other comprehensive (loss) income, net of tax	9	31	(75)	(11)
Comprehensive income	$ 911	$ 677	$ 1,780	$ 1,499