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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	$ 4.4us-gaap_PriorPeriodReclassificationAdjustment / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember
Out-of-period adjustments, net of tax	$ 2.7flo_PriorPeriodReclassificationAdjustmentNetOfTax / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember

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

X

- 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