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Quarterly Financial Information (Parenthetical) (Detail) (Selling, General and Administrative Expenses, USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Dec. 28, 2013
Selling, General and Administrative Expenses |
Schedule Of Quarterly Financial Information [Line Items] |
Out-of-period adjustments | $ 4.4 us-gaap_PriorPeriodReclassificationAdjustment / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember
Out-of-period adjustments, net of tax | $ 2.7 flo_PriorPeriodReclassificationAdjustmentNetOfTax / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember

X
- Definition Prior Period Reclassification Adjustment Net of Tax + References No definition available. + Details
Name: | flo_PriorPeriodReclassificationAdjustmentNetOfTax
Namespace Prefix: | flo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | flo_ScheduleOfQuarterlyFinancialInformationLineItems
Namespace Prefix: | flo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of a reclassification adjustment made to prior period financial statement amounts. + References No definition available. + Details
Name: | us-gaap_PriorPeriodReclassificationAdjustment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration