Acquisition (Narrative) (Details) $ in Millions	3 Months Ended			6 Months Ended	12 Months Ended
	Jul. 30, 2022 USD ($)	Jan. 29, 2022 USD ($)		Jul. 30, 2022 USD ($)	Jan. 29, 2022 USD ($) agreement		Jul. 31, 2021 USD ($)
Business Combination Segment Allocation [Line Items]
Purchase of business, net of cash acquired				$ 12
Goodwill	$ 773	$ 797	[1]	773	$ 797	[1]	$ 158
Businesses acquired | agreement					2
atmos [Member]
Business Combination Segment Allocation [Line Items]
Payments to Acquire Businesses, Gross	5	30		8	$ 333
Purchase price				368
Contingent consideration	35	35		35	35
Post-closing payable	6			6
Goodwill		247			247
Increase in goodwill	8
atmos [Member] | Maximum [Member]
Business Combination Segment Allocation [Line Items]
Contingent consideration	111			111
WSS [Member]
Business Combination Segment Allocation [Line Items]
Payments to Acquire Businesses, Gross	$ 0			$ 4
Purchase price					811
Purchase of business, net of cash acquired					741
Goodwill		$ 405			$ 405

[1] The balance sheet at January 29, 2022 has been derived from the previously reported audited consolidated financial statements at that date, but does not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. For further information, refer to the consolidated financial statements and footnotes thereto included in Foot Locker, Inc.’s Annual Report on Form 10-K for the year ended January 29, 2022.