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Subsequent Events - Additional Information (Detail) - Subsequent Event | Apr. 23, 2017 BusinessUnit
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Subsequent Event [Line Items] |
Number of new organizational structure business units established | 2
Full implementation expected period | 2018

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- Definition Implementation expected period. + References No definition available. + Details
Name: | flo_ImplementationExpectedPeriod
Namespace Prefix: | flo_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of business units. + References No definition available. + Details
Name: | flo_NumberOfBusinessUnits
Namespace Prefix: | flo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |