Note 9 - Earnings Per Share (Details Textual) - shares shares in Millions	3 Months Ended
Oct. 28, 2023	Oct. 29, 2022
Performance Shares [Member]
Contingently Issuable Shares Excluded From Diluted Earnings Per Share (in shares)	0.8	0.8

The number of contingently issuable shares excluded from diluted earnings per share.

No definition available.

Name:	fl_ContingentlyIssuableSharesExcludedFromDilutedEarningsPerShare
Namespace Prefix:	fl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration