Summary of Significant Accounting Policies - Cash & Cash Equivalents (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 1,980	$ 1,101	$ 2,240
Total cash, cash equivalents and restricted cash	$ 2,184	1,300	2,433	$ 2,161
Maximum Term of Original Maturity to Classify an Instrument as Cash Equivalents	3 months
Cash Equivalents, at Carrying Value	$ 1,410	$ 524
Weighted Average Interest Rate on Cash Equivalents	2.50%	1.10%
Other current assets
Cash and Cash Equivalents [Line Items]
Restricted cash included in Other current assets	$ 204	$ 199	$ 193