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Stockholders' Equity (Accelerated Share Repurchases) (Details) - USD ($) shares in Millions, $ in Millions			2 Months Ended	3 Months Ended				4 Months Ended		12 Months Ended
	Aug. 15, 2018	May 17, 2018	Jan. 29, 2019	Nov. 18, 2019	Nov. 03, 2019	Jul. 29, 2018	Apr. 29, 2018	Aug. 15, 2018	May 17, 2018	Jan. 31, 2021	Feb. 02, 2020	Feb. 03, 2019
Accelerated Share Repurchases [Line Items]
Cash paid for repurchases of common stock										$ 791	$ 6,965	$ 9,963
Repurchases of common stock through accelerated share agreements (in shares)										3.0	32.0	55.0
Q2 Accelerated Share Repurchase Agreement
Accelerated Share Repurchases [Line Items]
Cash paid for repurchases of common stock						$ 1,600
Repurchases of common stock through accelerated share agreements (in shares)	1.0					7.1		8.1
Q3 Accelerated Share Repurchase Agreement
Accelerated Share Repurchases [Line Items]
Cash paid for repurchases of common stock					$ 820
Repurchases of common stock through accelerated share agreements (in shares)			0.4	3.6	3.2
Q1 Accelerated Share Repurchase Agreement
Accelerated Share Repurchases [Line Items]
Cash paid for repurchases of common stock							$ 750
Repurchases of common stock through accelerated share agreements (in shares)		0.8					3.4		4.2

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The cash outflow to reacquire common stock during the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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Number of shares that have been repurchased during the period and are being held in treasury.

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-Name Accounting Standards Codification
-Topic 505
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