Quarterly Financial Data (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Apr. 26, 2013	Jan. 25, 2013	Oct. 26, 2012	Jul. 27, 2012	Apr. 27, 2012	Jan. 27, 2012	Oct. 28, 2011	Jul. 29, 2011	Apr. 26, 2013		Apr. 27, 2012		Apr. 29, 2011
Quarterly Financial Data [Abstract]
Net Sales	$ 4,459	$ 4,027	$ 4,095	$ 4,008	$ 4,297	$ 3,918	$ 4,023	$ 3,946	$ 16,590		$ 16,184		$ 15,508
Gross Profit	3,325	3,028	3,075	3,035	3,250	2,987	3,063	2,995	12,464		12,295
Earnings from Continuing Operations	969	988	646	864	888	845	864	819	3,467		3,415		3,055
Net Earnings	$ 969	$ 988	$ 646	$ 864	$ 991	$ 935	$ 871	$ 821	$ 3,467		$ 3,617		$ 3,096
Basic earnings per share:
Earnings from continuing operations (per share)	$ 0.96	$ 0.98	$ 0.63	$ 0.84	$ 0.85	$ 0.80	$ 0.82	$ 0.77	$ 3.40		$ 3.24		$ 2.84
Net earnings (per share)	$ 0.96	$ 0.98	$ 0.63	$ 0.84	$ 0.95	$ 0.89	$ 0.82	$ 0.77	$ 3.40	[1]	$ 3.43	[1]	$ 2.87	[1]
Diluted earnings per share:
Earnings from continuing operations (per share)	$ 0.95	$ 0.97	$ 0.63	$ 0.83	$ 0.85	$ 0.80	$ 0.81	$ 0.77	$ 3.37		$ 3.22		$ 2.82
Net earnings (per share)	$ 0.95	$ 0.97	$ 0.63	$ 0.83	$ 0.94	$ 0.88	$ 0.82	$ 0.77	$ 3.37		$ 3.41		$ 2.86

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