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Stockholders' Equity (Details) - USD ($) shares in Millions, $ in Millions			3 Months Ended		4 Months Ended		6 Months Ended
	Aug. 15, 2018	May 17, 2018	Jul. 29, 2018	Apr. 29, 2018	Aug. 15, 2018	May 17, 2018	Jul. 29, 2018	Jul. 30, 2017	Jan. 28, 2018
Accelerated Share Repurchases [Line Items]
Repurchases of common stock through accelerated share repurchase agreements							$ 3,121	$ 3,921
Treasury stock value			$ 50,928				50,928		$ 48,196
Paid-in capital			10,079				10,079		$ 10,192
Q1 Accelerated Share Repurchase Agreement [Member]
Accelerated Share Repurchases [Line Items]
Repurchases of common stock through accelerated share repurchase agreements				$ 750
Treasury stock shares acquired		0.8		3.4		4.2
Q2 Accelerated Share Repurchase Agreement [Member]
Accelerated Share Repurchases [Line Items]
Repurchases of common stock through accelerated share repurchase agreements			$ 1,600
Treasury stock shares acquired			7.1
Treasury stock value			$ 1,332				1,332
Paid-in capital			$ 268				$ 268
Q2 Accelerated Share Repurchase Agreement [Member] | Subsequent Event [Member]
Accelerated Share Repurchases [Line Items]
Treasury stock shares acquired	1.0				8.1

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Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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