Shareholders' Equity (Details) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Apr. 29, 2016	May. 01, 2015
Shareholders' Equity
Reduction in retained earnings		$ 1,152	$ 961
Share Repurchases
Share repurchases, value	[1]	$ 1,252	$ 1,062
Share repurchases, shares		16.6	14.4
Share Repurchase Program [Member]
Share Repurchases
Share repurchases, value	[1]	$ 1,200	$ 1,000
Share repurchases, shares		15.9	13.6
Shares Withheld from Employees [Member]
Share Repurchases
Share repurchases, value	[1]	$ 52	$ 62
Share repurchases, shares		0.7	0.8

[1] Reductions of $1.2 billion and $961 million were recorded to retained earnings, after capital in excess of par value was depleted, for the three months ended April 29, 2016 and May 1, 2015, respectively.