Fair Value Measurements (Summary of Fair Value Remeasurements of Property and Equipment Impairments) (Details) - Fair Value, Measurements, Nonrecurring [Member] - Level 3 [Member] - SG&A [Member] - USD ($) $ in Millions		3 Months Ended
		May 04, 2019	May 05, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairments	[1]	$ 2	$ 2
Remaining Net Carrying Value	[1],[2]	$ 2

[1] Balances exclude immaterial amounts associated with operating lease assets.

[2] 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basis, certain fair value measurements presented in the table may reflect values at earlier measurement dates and may no longer represent the fair values at May 4, 2019, and May 5, 2018.