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Unaudited Quarterly Financial Information - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 28, 2013	Jul. 13, 2013	Dec. 28, 2013
Selling, General and Administrative Expenses
Schedule Of Quarterly Financial Information [Line Items]
Out-of-period adjustments	$ 4.4us-gaap_PriorPeriodReclassificationAdjustment / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember
Out-of-period adjustments, net of tax	2.7flo_PriorPeriodReclassificationAdjustmentNetOfTax / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember
Goodwill and Other Assets
Schedule Of Quarterly Financial Information [Line Items]
Out-of-period adjustments	$ 0.9us-gaap_PriorPeriodReclassificationAdjustment / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = flo_GoodwillAndOtherAssetsMember	$ 1.1us-gaap_PriorPeriodReclassificationAdjustment / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = flo_GoodwillAndOtherAssetsMember	$ 2.0us-gaap_PriorPeriodReclassificationAdjustment / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = flo_GoodwillAndOtherAssetsMember

X

- Definition

Prior Period Reclassification Adjustment Net of Tax

+ References

No definition available.

+ Details

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- Definition

The amount of a reclassification adjustment made to prior period financial statement amounts.

+ References

No definition available.

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