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Stock-Based Compensation (Performance-Contingent Return on Invested Capital Shares) - Additional Information (Detail)	4 Months Ended
	Apr. 25, 2015
Performance Contingent Return On Invested Capital Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of actual ROI attainment	125.00%flo_PercentageOfActualAverageReturnOnInvestedCapitalOnShareBasedCompensationArrangement / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = flo_ReturnOnInvestedCapitalSharesMember
2012 awards | Performance Contingent Return On Invested Capital Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of actual ROI attainment	125.00%flo_PercentageOfActualAverageReturnOnInvestedCapitalOnShareBasedCompensationArrangement / us-gaap_AwardTypeAxis = flo_TwentyTwelvePlanYearMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = flo_ReturnOnInvestedCapitalSharesMember
Return On Invested Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout	0.00%flo_PerformanceSharePayout / us-gaap_StatementScenarioAxis = flo_ReturnOnInvestedCapitalMember
Return On Invested Capital | Range One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout, ROIC above WACC	1.75%flo_PercentageOfTargetIncentiveRequiredPayout / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = flo_RangeOneMember / us-gaap_StatementScenarioAxis = flo_ReturnOnInvestedCapitalMember
Return On Invested Capital | Range Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout, ROIC above WACC	3.75%flo_PercentageOfTargetIncentiveRequiredPayout / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = flo_RangeTwoMember / us-gaap_StatementScenarioAxis = flo_ReturnOnInvestedCapitalMember
Return On Invested Capital | Range Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout, ROIC above WACC	4.75%flo_PercentageOfTargetIncentiveRequiredPayout / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = flo_RangeThreeMember / us-gaap_StatementScenarioAxis = flo_ReturnOnInvestedCapitalMember
Performance Contingent Return On Invested Capital Shares | Performance contingent Awards 2013, 2014 and 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	2 years
Performance Contingent Return On Invested Capital Shares | Performance contingent Awards 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	18 months
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Return on investment target over the two fiscal years immediately preceding the vesting date	1.75%flo_ReturnOnInvestmentSharebasedCompensationArrangementBySharebasedPaymentAwardPerformanceConditionPercentage / us-gaap_RangeAxis = us-gaap_MinimumMember
Percentage of shares that can be earned	0.00%flo_PercentageOfTargetShares / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Return on investment target over the two fiscal years immediately preceding the vesting date	4.75%flo_ReturnOnInvestmentSharebasedCompensationArrangementBySharebasedPaymentAwardPerformanceConditionPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember
Percentage of shares that can be earned	125.00%flo_PercentageOfTargetShares / us-gaap_RangeAxis = us-gaap_MaximumMember
Weighted Average Cost of Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout	1.75%flo_PerformanceSharePayout / us-gaap_RangeAxis = flo_WeightedAverageCostOfCapitalMember
Weighted Average Cost of Capital | Range One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout, ROIC above WACC	50.00%flo_PercentageOfTargetIncentiveRequiredPayout / us-gaap_RangeAxis = flo_WeightedAverageCostOfCapitalMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = flo_RangeOneMember
Weighted Average Cost of Capital | Range Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout, ROIC above WACC	100.00%flo_PercentageOfTargetIncentiveRequiredPayout / us-gaap_RangeAxis = flo_WeightedAverageCostOfCapitalMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = flo_RangeTwoMember
Weighted Average Cost of Capital | Range Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout, ROIC above WACC	125.00%flo_PercentageOfTargetIncentiveRequiredPayout / us-gaap_RangeAxis = flo_WeightedAverageCostOfCapitalMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = flo_RangeThreeMember

X

- Definition

Actual Percentage earned on 2012 return on invested capital award

+ References

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+ Details

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X

- Definition

Range of Percentage Of Target Incentive Required Payout

+ References

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+ Details

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X

- Definition

Range of payout in percentage of target shares possible to earn.

+ References

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+ Details

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X

- Definition

Range of Performance Share Payout

+ References

No definition available.

+ Details

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X

- Definition

Return On Investment Share Based Compensation Arrangement By Share Based Payment Award Performance Condition target Percentage in excess of weighted average cost of capital.

+ References

No definition available.

+ Details

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X

- Definition

Vesting period for return on invested capital awards issued after 2012.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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X

- Details

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X

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X

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X

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