Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Organization and Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Financing Activities (Narrative) (Details)

v3.21.2

Financing Activities (Narrative) (Details) - USD ($)			3 Months Ended				6 Months Ended
Financing Activities (Narrative) (Details) - USD ($)	Aug. 17, 2021	Mar. 17, 2021	Oct. 30, 2021	Jul. 31, 2021	May 01, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Gains (losses) on retirement of debt				$ (3,000,000)	$ (11,000,000)	$ 0	$ (14,000,000)	$ 0
Extinguishment of debt		$ 500,000,000
Debt Instrument, Repurchase Amount		$ 17,000,000
Secured Debt, Current [Member]
Face amount				$ 1,300,000,000			$ 1,300,000,000
5.875% Senior Notes due 2029 [Member]
Debt instrument interest rate, stated percentage		5.875%
Face amount		$ 500,000,000
Debt instrument, maturity date		Apr. 01, 2029
Forecast [Member]
Gains (losses) on retirement of debt			$ 185,000,000
Subsequent Event [Member] \| 8.375% Senior secured notes due 2025 [Member]
Debt instrument, redeemed in principal amount	$ 1,300,000,000
Debt instrument interest rate, stated percentage	8.375%
Debt instrument, redemption price, percentage of principal amount redeemed	100.00%
Debt instrument, accrued and unpaid interest	$ 19,000,000
Gain (loss) on early redemption of debt before write off	138,000,000
Unamortized deferred debt costs	$ 47,000,000

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