Shareholders' Equity (Details Textual) - USD ($) shares in Millions			1 Months Ended	3 Months Ended
		Feb. 29, 2016	May. 31, 2016	Apr. 29, 2016	May. 01, 2015	Mar. 20, 2015
Share Repurchases
Share repurchases, value	[1]			$ 1,252,000,000	$ 1,062,000,000
Share repurchases, shares				16.6	14.4
Cash used to repurchase shares				$ 1,253,000,000	$ 1,109,000,000
Share Repurchase Program [Member]
Share Repurchases
Share repurchases, value	[1]			$ 1,200,000,000	$ 1,000,000,000
Share repurchases, shares				15.9	13.6
Remaining share repurchases authorization, value				$ 2,400,000,000
March 20, 2015 Share Repurchase Program [Member]
Share Repurchases
Share repurchases authorized, value						$ 5,000,000,000.0
February 2016 Accelerated Share Repurchase Agreement Purchases [Member]
Share Repurchases
Share repurchases, value		$ 500,000,000
Share repurchases, shares		6.2
Cash used to repurchase shares		$ 500,000,000
February 2016 Accelerated Share Repurchase Agreement Purchases [Member] | Subsequent Event [Member]
Share Repurchases
Share repurchases, shares			0.6
Open market purchases [Member]
Share Repurchases
Share repurchases, value				$ 700,000,000
Share repurchases, shares				9.7

[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.