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Other Accrued Liabilities and Other Long-term Liabilities - Additional Information (Detail) $ in Millions | 9 Months Ended
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Oct. 07, 2023 USD ($) Californiaterritory DistributionTerritory
Other Liabilities Disclosure [Abstract] |
Number of distribution territories repurchased | DistributionTerritory | 350
Number of additional distribution territories not part of settlement | Californiaterritory | 50
Sellers owed additional taxes | $ | $ 3.4

X
- Definition Business combination selling owed additional taxes. + References No definition available. + Details
Name: | flo_BusinessCombinationSellingOwedAdditionalTaxes
Namespace Prefix: | flo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of additional distribution territories not part of settlement. + References No definition available. + Details
Name: | flo_NumberOfAdditionalDistributionTerritoriesNotPartOfSettlement
Namespace Prefix: | flo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of distribution territories repurchased. + References No definition available. + Details
Name: | flo_NumberOfDistributionTerritoriesRepurchased
Namespace Prefix: | flo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_OtherLiabilitiesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration