Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jul. 25, 2014	Jul. 26, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ 871	$ 953
Other comprehensive income/(loss), net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax expense (benefit) of $32 and $(54), respectively	54	(95)
Translation adjustment	1	(5)
Net change in retirement obligations, net of tax expense of $6 and $9, respectively	17	14
Unrealized gain on derivatives, net of tax expense of $21 and $1, respectively	37	2
Other comprehensive income, net of tax	109	(84)
Comprehensive income	$ 980	$ 869