Fair Value Measurements - Nonrecurring (Details) - Fair Value, Measurements, Nonrecurring [Member] - Level 3 - SG&A - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Aug. 04, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges		$ 2	$ 1	$ 4	$ 6
Remaining net carrying value	[1]	$ 2	$ 0	$ 2	$ 0

[1] Remaining net carrying value approximates fair value. Because assets subject to long-lived asset impairment are not measured at fair value on a recurring basis, certain fair value measurements presented in the table may reflect values at earlier measurement dates and may no longer represent the fair values at August 4, 2018, and July 29, 2017.