Financing (Schedule of Company Debt) (Details) - USD ($) $ in Millions	Jan. 28, 2023	Mar. 10, 2022	Jan. 29, 2022	Mar. 17, 2021	Jan. 30, 2021
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 3,007		$ 3,295
Unamortized debt issue costs and discount	(28)		(22)
Senior notes due 2029
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 500		$ 500
Debt instrument interest rate, stated percentage	5.875%		5.875%	5.875%
Senior notes due 2030
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 425		$ 0
Debt instrument interest rate, stated percentage	5.875%	5.875%	5.875%
Senior notes due 2032
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 425		$ 0
Debt instrument interest rate, stated percentage	6.125%	6.125%	6.125%
Senior notes due 2034
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 367		$ 367
Debt instrument interest rate, stated percentage	4.50%		4.50%
Senior notes due 2042
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 250		$ 250
Debt instrument interest rate, stated percentage	5.125%		5.125%
Senior notes due 2043
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 250		$ 250
Debt instrument interest rate, stated percentage	4.30%		4.30%
Senior notes due 2037
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 192		$ 192
Debt instrument interest rate, stated percentage	6.375%		6.375%
Senior exchanged debentures due 2034
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 181		$ 183
Debt instrument interest rate, stated percentage	6.70%		6.70%
Senior debentures due 2028
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 105		$ 105
Debt instrument interest rate, stated percentage	7.00%		7.00%
Senior debentures due 2032
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 79		$ 79
Debt instrument interest rate, stated percentage	6.90%		6.90%		6.90%
Senior exchanged debentures due 2028
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 73		$ 74
Debt instrument interest rate, stated percentage	6.70%		6.70%
Senior debentures due 2027
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 71		$ 71
Debt instrument interest rate, stated percentage	6.79%		6.79%
Senior debentures due 2028
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 29		$ 29
Debt instrument interest rate, stated percentage	6.70%		6.70%
Senior debentures due 2034
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 18		$ 18
Debt instrument interest rate, stated percentage	6.70%		6.70%
Senior exchanged debentures due 2029
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 13		$ 13
Debt instrument interest rate, stated percentage	8.75%		8.75%
Senior debentures due 2032
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 12		$ 12
Debt instrument interest rate, stated percentage	6.90%		6.90%
Senior debentures due 2025
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 6		$ 6
Debt instrument interest rate, stated percentage	7.60%		7.60%		7.60%
Senior exchanged debentures due 2030
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 5		$ 5
Debt instrument interest rate, stated percentage	7.875%		7.875%
Senior debentures due 2030
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 5		$ 5
Debt instrument interest rate, stated percentage	7.875%		7.875%
Senior exchanged debentures due 2032
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 1		$ 5
Debt instrument interest rate, stated percentage	6.90%		6.90%
Senior notes due 2023
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 0		$ 504
Debt instrument interest rate, stated percentage	2.875%		2.875%		2.875%
Senior notes due 2024
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 0		$ 350
Debt instrument interest rate, stated percentage	3.625%		3.625%
Senior notes due 2023
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 0		$ 161
Debt instrument interest rate, stated percentage	4.375%		4.375%		4.375%
Senior exchanged debentures due 2024
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 0		$ 81
Debt instrument interest rate, stated percentage	6.65%		6.65%
Senior debentures due 2024
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 0		$ 36
Debt instrument interest rate, stated percentage	6.65%		6.65%		6.65%
Premium On Acquired Debt Using Effective Interest Yield Of Five Point Seven Six Zero Percent To Six Point Zero Two One [Member]
Debt Instrument [Line Items]
Premium on acquired debt, effect interest (as a percent)	$ 17		$ 21
Entire Long Term Debt
Debt Instrument [Line Items]
Debt instrument, principal outstanding	$ 2,996		$ 3,295
Minimum | Premium On Acquired Debt Using Effective Interest Yield Of Five Point Seven Six Zero Percent To Six Point Zero Two One [Member]
Debt Instrument [Line Items]
Debt instrument interest rate, effective percentage	5.76%		5.76%
Maximum | Premium On Acquired Debt Using Effective Interest Yield Of Five Point Seven Six Zero Percent To Six Point Zero Two One [Member]
Debt Instrument [Line Items]
Debt instrument interest rate, effective percentage	6.021%		6.021%