Quarterly Financial Data (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Apr. 27, 2012	Jan. 27, 2012	Oct. 28, 2011	Jul. 29, 2011	Apr. 29, 2011	Jan. 28, 2011	Oct. 29, 2010	Jul. 30, 2010	Apr. 27, 2012		Apr. 29, 2011		Apr. 30, 2010
Quarterly Financial Data [Abstract]
Net Sales	$ 4,297	$ 3,918	$ 4,023	$ 3,946	$ 4,167	$ 3,857	$ 3,794	$ 3,690	$ 16,184		$ 15,508		$ 15,392
Gross Profit	3,250	2,987	3,063	2,995	3,160	2,923	2,885	2,840	12,295		11,808
Earnings from Continuing Operations	888	845	864	819	761	913	553	828	3,415		3,055		3,083
Net Earnings	$ 991	$ 935	$ 871	$ 821	$ 776	$ 924	$ 566	$ 830	$ 3,617		$ 3,096		$ 3,099
Basic earnings per share:
Earnings from continuing operations (per share)	$ 0.85	$ 0.80	$ 0.82	$ 0.77	$ 0.71	$ 0.85	$ 0.51	$ 0.76	$ 3.24		$ 2.84		$ 2.79
Net earnings (per share)	$ 0.95	$ 0.89	$ 0.82	$ 0.77	$ 0.73	$ 0.86	$ 0.52	$ 0.76	$ 3.43	[1]	$ 2.87	[1]	$ 2.80	[1]
Diluted earnings per share:
Earnings from continuing operations (per share)	$ 0.85	$ 0.80	$ 0.81	$ 0.77	$ 0.71	$ 0.85	$ 0.51	$ 0.76	$ 3.22		$ 2.82		$ 2.78
Net earnings (per share)	$ 0.94	$ 0.88	$ 0.82	$ 0.77	$ 0.72	$ 0.86	$ 0.52	$ 0.76	$ 3.41		$ 2.86		$ 2.79

[1] * All earnings per share amounts have been rounded to the nearest $0.01, and therefore, may not sum.