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Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 03, 2019	Jan. 28, 2018	Jan. 29, 2017
Reconciliation of gross unrecognized tax benefits:
Unrecognized tax benefits balance at beginning of fiscal year	$ 637	$ 659	$ 689
Additions based on tax positions related to the current year	91	74	147
Additions for tax positions of prior years	100	15	14
Reductions for tax positions of prior years	(245)	(93)	(161)
Reductions due to settlements	(66)	(1)	(16)
Reductions due to lapse of statute of limitations	(23)	(17)	(14)
Unrecognized tax benefits balance at end of fiscal year	$ 494	$ 637	$ 659

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Amount of unrecognized tax benefits.

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