Basis of Presentation (Narrative) (Details) $ in Millions	3 Months Ended	6 Months Ended
	Aug. 01, 2020 USD ($)	Aug. 01, 2020 USD ($)	Jun. 15, 2020 store	Mar. 27, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of Stores | store			800
Refundable Payroll Credit				50.00%
Decrease in SG&A expenses	$ 12	$ 81
Revolving Credit Facility [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,250	$ 1,250
Debt instrument, term		5 years