Investment in Australian Joint Venture - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Aug. 04, 2017	Jan. 31, 2020	Feb. 01, 2019	Feb. 02, 2018
Schedule of Investments [Line Items]
Proceeds from sale/maturity of investments		$ 695	$ 1,393	$ 1,114
Hydrox Holdings Pty Ltd.
Schedule of Investments [Line Items]
Proceeds from sale/maturity of investments	$ 199
Cost method investments, realized gains	$ 96