Shareholders' Equity (Details Textual) - USD ($)		12 Months Ended
		Feb. 03, 2017		Jan. 29, 2016		Jan. 30, 2015	Jan. 27, 2017	Mar. 20, 2015
Share Repurchases
Share repurchases, shares		47,700,000		54,500,000
Share repurchases, value		$ 3,577,000,000	[1]	$ 3,878,000,000	[1]	$ 3,927,000,000
Shareholders' Equity
Preferred stock, shares authorized		5,000,000.0		5,000,000.0
Preferred stock, par value		$ 5		$ 5
Preferred stock, shares issued		0		0
Common stock, shares authorized		5,600,000,000.0		5,600,000,000.0
Common stock, par value		$ 0.50		$ 0.50
Share Repurchase Program [Member]
Share Repurchases
Share repurchases, shares		46,700,000		53,600,000
Share repurchases, value	[1]	$ 3,500,000,000		$ 3,811,000,000
Remaining share repurchases authorization, value		$ 5,100,000,000
March 20, 2015 Share Repurchase Authorization [Member]
Share Repurchases
Share repurchases authorized, value								$ 5,000,000,000.0
January 27, 2017 Share Repurchase Authorization [Member]
Share Repurchases
Share repurchases authorized, value							$ 5,000,000,000.0
Accelerated Share Repurchase Agreement Purchases [Member]
Share Repurchases
Share repurchases, shares		19,100,000
Share repurchases, value		$ 1,400,000,000
Open Market Purchases [Member]
Share Repurchases
Share repurchases, shares		27,600,000
Share repurchases, value		$ 2,100,000,000

[1] Reductions of $3.3 billion and $3.6 billion were recorded to retained earnings, after capital in excess of par value was depleted, for 2016 and 2015, respectively.