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Other Accrued Liabilities and Other Long-term Liabilities - Additional Information (Detail) $ in Millions | Jan. 01, 2022 USD ($) DistributionTerritory
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Other Liabilities Disclosure [Abstract] |
Business combination, estimated cost owed to shareholders | $ | $ 3.4
Number of distribution territories repurchased | DistributionTerritory | 75

X
- Definition Business combination, estimated cost owed to shareholders. + References No definition available. + Details
Name: | flo_BusinessCombinationEstimatedCostOwedToShareholders
Namespace Prefix: | flo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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