Long-term Debt and Borrowing Facilities - Issuance and Repurchase of Notes (Details) - USD ($) $ in Millions		1 Months Ended		3 Months Ended		12 Months Ended
		Oct. 30, 2021	Sep. 30, 2021	Oct. 30, 2021	May 01, 2021	Jan. 28, 2023	Jan. 29, 2022	Jan. 30, 2021	Apr. 30, 2021
Debt Instrument [Line Items]
Interest paid, including capitalized interest, operating and investing activities						$ 339	$ 354	$ 415
Repayments of long-term debt	[1]					0	1,716	1,307
Loss on extinguishment of debt	[1]					$ 0	$ 195	$ 53
With Subsidiary Guarantee
Debt Instrument [Line Items]
Extinguishment of debt, gain (loss), net of tax				$ 68	$ 80
Loss on extinguishment of debt				89	$ 105
With Subsidiary Guarantee | Fixed Rate 5.625 Percent Notes Due February 2022
Debt Instrument [Line Items]
Debt instrument, repurchased face amount									$ 285
Interest rate							5.625%
With Subsidiary Guarantee | 6.875% Fixed Interest Rate Secured Notes due July 2025
Debt Instrument [Line Items]
Debt instrument, repurchased face amount									$ 750
Interest rate							6.875%
With Subsidiary Guarantee | Fixed Rate 5.625% Notes Due October 2023
Debt Instrument [Line Items]
Debt instrument, repurchased face amount		$ 50	$ 270	$ 50
Interest rate							5.625%
Repayments of long-term debt		$ 54
With Subsidiary Guarantee | $320 million, 9.375% Fixed Interest Rate Notes due July 2025 ("2025 Notes")
Debt Instrument [Line Items]
Debt instrument, repurchased face amount			180
Interest rate						9.375%
With Subsidiary Guarantee | 2023 Notes and 2025 Notes
Debt Instrument [Line Items]
Repayments of long-term debt			$ 532

[1] The cash flows related to discontinued operations have not been segregated. Accordingly, the Consolidated Statements of Cash Flows include the results from continuing and discontinued operations.