Other Accrued Liabilities and Other Long-term Liabilities - Additional Information (Detail)	Dec. 28, 2024 Californiaterritory DistributionTerritory
Other Liabilities Disclosure [Abstract]
Number of distribution territories repurchased \| DistributionTerritory	350
Number of additional distribution territories not part of settlement \| Californiaterritory	50

Number of additional distribution territories not part of settlement.

No definition available.

Name:	flo_NumberOfAdditionalDistributionTerritoriesNotPartOfSettlement
Namespace Prefix:	flo_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant