3.26.1 html 229 410 1 true 103 0 false 7 false false R1.htm 75000 - Document - Document and Entity Information Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 75010 - Statement - Condensed Consolidated Balance Sheets (Unaudited) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_StatementCondensedConsolidatedBalanceSheetsUnaudited Condensed Consolidated Balance Sheets (Unaudited) Statements 2 false false R3.htm 75020 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_StatementCondensedConsolidatedBalanceSheetsUnauditedParenthetical Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Statements 3 false false R4.htm 75030 - Statement - Condensed Consolidated Statements of Income (Unaudited) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/StatementCondensedConsolidatedStatementsOfIncomeUnaudited Condensed Consolidated Statements of Income (Unaudited) Statements 4 false false R5.htm 75040 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/StatementCondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited Condensed Consolidated Statements of Comprehensive Income (Unaudited) Statements 5 false false R6.htm 75050 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfChangesInStockholdersEquityUnaudited Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) Statements 6 false false R7.htm 75060 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfChangesInStockholdersEquityUnauditedParenthetical Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) Statements 7 false false R8.htm 75070 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfCashFlowsUnaudited Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 8 false false R9.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 9 false false R10.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 10 false false R11.htm 995455 - Disclosure - Basis of Presentation Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureBasisOfPresentation Basis of Presentation Notes 11 false false R12.htm 995465 - Disclosure - Recent Accounting Pronouncements Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureRecentAccountingPronouncements Recent Accounting Pronouncements Notes 12 false false R13.htm 995475 - Disclosure - Restructuring Activities Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureRestructuringActivities Restructuring Activities Notes 13 false false R14.htm 995485 - Disclosure - Segments Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureSegments Segments Notes 14 false false R15.htm 995495 - Disclosure - Acquisition Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAcquisition1 Acquisition Notes 15 false false R16.htm 995505 - Disclosure - Leases Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureLeases Leases Notes 16 false false R17.htm 995515 - Disclosure - Accumulated Other Comprehensive Income (Loss) ("AOCI") Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAoci Accumulated Other Comprehensive Income (Loss) ("AOCI") Notes 17 false false R18.htm 995525 - Disclosure - Intangible Assets Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureIntangibleAssets Intangible Assets Notes 18 false false R19.htm 995535 - Disclosure - Fair Value of Financial Instruments Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureFairValueOfFinancialInstruments Fair Value of Financial Instruments Notes 19 false false R20.htm 995545 - Disclosure - Derivative Financial Instruments Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureDerivativeFinancialInstruments Derivative Financial Instruments Notes 20 false false R21.htm 995555 - Disclosure - Other Current and Non-Current Assets Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureOtherCurrentAndNonCurrentAssets Other Current and Non-Current Assets Notes 21 false false R22.htm 995565 - Disclosure - Other Accrued Liabilities and Other Long-Term Liabilities Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureOtherAccruedLiabilitiesAndOtherLongTermLiabilities Other Accrued Liabilities and Other Long-Term Liabilities Notes 22 false false R23.htm 995575 - Disclosure - Assets Held for Sale Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureAssetsHeldForSale Assets Held for Sale Notes 23 false false R24.htm 995585 - Disclosure - Debt and Other Obligations Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureDebtAndOtherObligations Debt and Other Obligations Notes 24 false false R25.htm 995595 - Disclosure - Variable Interest Entities Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureVariableInterestEntities Variable Interest Entities Notes 25 false false R26.htm 995605 - Disclosure - Commitments and Contingencies Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 26 false false R27.htm 995615 - Disclosure - Earnings Per Share Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureEarningsPerShare Earnings Per Share Notes 27 false false R28.htm 995625 - Disclosure - Stock-Based Compensation Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureStockBasedCompensation Stock-Based Compensation Notes 28 false false R29.htm 995635 - Disclosure - Postretirement Plans Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosurePostretirementPlans Postretirement Plans Notes 29 false false R30.htm 995645 - Disclosure - Income Taxes Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureIncomeTaxes Income Taxes Notes 30 false false R31.htm 995655 - Disclosure - Subsequent Events Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureSubsequentEvents Subsequent Events Notes 31 false false R32.htm 995665 - Disclosure - Basis of Presentation (Policies) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureBasisOfPresentationPolicies Basis of Presentation (Policies) Policies http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureRecentAccountingPronouncements 32 false false R33.htm 995675 - Disclosure - Segments (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureSegmentsTables Segments (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureSegments 33 false false R34.htm 995695 - Disclosure - Restructuring Activities (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureRestructuringActivitiesTables Restructuring Activities (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureRestructuringActivities 34 false false R35.htm 995705 - Disclosure - Acquisition (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAcquisitionTables Acquisition (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAcquisition1 35 false false R36.htm 995715 - Disclosure - Leases (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureLeasesTables Leases (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureLeases 36 false false R37.htm 995725 - Disclosure - Accumulated Other Comprehensive Income (Loss) ("AOCI") (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAociTables Accumulated Other Comprehensive Income (Loss) ("AOCI") (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAoci 37 false false R38.htm 995735 - Disclosure - Intangible Assets (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureIntangibleAssetsTables Intangible Assets (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureIntangibleAssets 38 false false R39.htm 995745 - Disclosure - Fair Value of Financial Instruments (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsTables Fair Value of Financial Instruments (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureFairValueOfFinancialInstruments 39 false false R40.htm 995755 - Disclosure - Derivative Financial Instruments (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureDerivativeFinancialInstrumentsTables Derivative Financial Instruments (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureDerivativeFinancialInstruments 40 false false R41.htm 995765 - Disclosure - Other Current and Non-Current Assets (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureOtherCurrentAndNonCurrentAssetsTables Other Current and Non-Current Assets (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureOtherCurrentAndNonCurrentAssets 41 false false R42.htm 995775 - Disclosure - Other Accrued Liabilities and Other Long-Term Liabilities (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureOtherAccruedLiabilitiesAndOtherLongTermLiabilitiesTables Other Accrued Liabilities and Other Long-Term Liabilities (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureOtherAccruedLiabilitiesAndOtherLongTermLiabilities 42 false false R43.htm 995785 - Disclosure - Assets Held for Sale (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureAssetsHeldForSaleTables Assets Held for Sale (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureAssetsHeldForSale 43 false false R44.htm 995795 - Disclosure - Debt and Other Obligations (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureDebtAndOtherObligationsTables Debt and Other Obligations (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureDebtAndOtherObligations 44 false false R45.htm 995805 - Disclosure - Earnings Per Share (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureEarningsPerShareTables Earnings Per Share (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureEarningsPerShare 45 false false R46.htm 995815 - Disclosure - Stock-Based Compensation (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureStockBasedCompensationTables Stock-Based Compensation (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureStockBasedCompensation 46 false false R47.htm 995825 - Disclosure - Postretirement Plans (Tables) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosurePostretirementPlansTables Postretirement Plans (Tables) Tables http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosurePostretirementPlans 47 false false R48.htm 995835 - Disclosure - Basis of Presentation - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureBasisOfPresentationAdditionalInformationDetail Basis of Presentation - Additional Information (Detail) Details 48 false false R49.htm 995855 - Disclosure - Recent Accounting Pronouncements - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureRecentAccountingPronouncementsAdditionalInformationDetail Recent Accounting Pronouncements - Additional Information (Detail) Details 49 false false R50.htm 995875 - Disclosure - Restructuring activities - Components of Costs Associated with Restructuring Programs (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureRestructuringActivitiesComponentsOfCostsAssociatedWithRestructuringProgramsDetail Restructuring activities - Components of Costs Associated with Restructuring Programs (Detail) Details 50 false false R51.htm 995885 - Disclosure - Restructuring activities - Components of, and Changes in Restructuring Accruals (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureRestructuringActivitiesComponentsOfAndChangesInRestructuringAccrualsDetail Restructuring activities - Components of, and Changes in Restructuring Accruals (Detail) Details 51 false false R52.htm 995895 - Disclosure - Segments - Additional Information (Details) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureSegmentsAdditionalInformationDetails Segments - Additional Information (Details) Details 52 false false R53.htm 995905 - Disclosure - Segments - Schedule of Expense Items Impacting Comparability in Adjusted Reports Used by CODM (Details) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureSegmentsScheduleOfExpenseItemsImpactingComparabilityInAdjustedReportsUsedByCodmDetails Segments - Schedule of Expense Items Impacting Comparability in Adjusted Reports Used by CODM (Details) Details 53 false false R54.htm 995915 - Disclosure - Segments - Schedule of Net Sales, Net Income, and Significant Expenses (Details) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureSegmentsScheduleOfNetSalesNetIncomeAndSignificantExpensesDetails Segments - Schedule of Net Sales, Net Income, and Significant Expenses (Details) Details 54 false false R55.htm 995925 - Disclosure - Acquisition - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAcquisitionAdditionalInformationDetail Acquisition - Additional Information (Detail) Details 55 false false R56.htm 995935 - Disclosure - Acquisition - Summary of Consideration Paid and Valuations for Assets Acquired, Liabilities Assumed, and Allocated Intangible Assets and Goodwill (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAcquisitionSummaryOfConsiderationPaidAndValuationsForAssetsAcquiredLiabilitiesAssumedAndAllocatedIntangibleAssetsAndGoodwillDetai Acquisition - Summary of Consideration Paid and Valuations for Assets Acquired, Liabilities Assumed, and Allocated Intangible Assets and Goodwill (Detail) Details 56 false false R57.htm 995945 - Disclosure - Acquisition - Schedule of Acquired Intangible Assets Subject to Amortization (Details) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAcquisitionScheduleOfAcquiredIntangibleAssetsSubjectToAmortizationDetails Acquisition - Schedule of Acquired Intangible Assets Subject to Amortization (Details) Details 57 false false R58.htm 995955 - Disclosure - Acquisition - Schedule of Supplemental Pro Forma Revenue and Net Earnings of The Combined Entity Had The Acquisition Date (Details) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAcquisitionScheduleOfSupplementalProFormaRevenueAndNetEarningsOfTheCombinedEntityHadTheAcquisitionDateDetails Acquisition - Schedule of Supplemental Pro Forma Revenue and Net Earnings of The Combined Entity Had The Acquisition Date (Details) Details 58 false false R59.htm 995965 - Disclosure - Lease Modifications and Renewals and Lease Terminations (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureLeaseModificationsAndRenewalsAndLeaseTerminationsDetail Lease Modifications and Renewals and Lease Terminations (Detail) Details 59 false false R60.htm 995985 - Disclosure - Leases - Lease Costs Incurred By Lease Type, and/or Type Of Payment (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureLeasesLeaseCostsIncurredByLeaseTypeAndOrTypeOfPaymentDetail Leases - Lease Costs Incurred By Lease Type, and/or Type Of Payment (Detail) Details 60 false false R61.htm 995995 - Disclosure - Summary of Reclassifications Out of AOCI (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureSummaryOfReclassificationsOutOfAOCIDetail Summary of Reclassifications Out of AOCI (Detail) Details 61 false false R62.htm 996005 - Disclosure - Changes to AOCI, Net of Income Tax, By Component (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureChangesToAOCINetOfIncomeTaxByComponentDetail Changes to AOCI, Net of Income Tax, By Component (Detail) Details 62 false false R63.htm 996015 - Disclosure - Gain (Loss) Reclassified From AOCI for Commodity Contracts (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureGainLossReclassifiedFromAOCIForCommodityContractsDetail Gain (Loss) Reclassified From AOCI for Commodity Contracts (Detail) Details 63 false false R64.htm 996025 - Disclosure - Summary of Changes in Carrying Amount of Goodwill (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureSummaryOfChangesInCarryingAmountOfGoodwillDetail Summary of Changes in Carrying Amount of Goodwill (Detail) Details 64 false false R65.htm 996045 - Disclosure - Aggregate Amortization Expense (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureAggregateAmortizationExpenseDetail Aggregate Amortization Expense (Detail) Details 65 false false R66.htm 996055 - Disclosure - Estimated Net Amortization of Intangibles (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureEstimatedNetAmortizationOfIntangiblesDetail Estimated Net Amortization of Intangibles (Detail) Details 66 false false R67.htm 996065 - Disclosure - Fair Value of Financial Instruments - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsAdditionalInformationDetail Fair Value of Financial Instruments - Additional Information (Detail) Details 67 false false R68.htm 996075 - Disclosure - Carrying Value of Distributor Notes Receivable (Detail) Notes http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureCarryingValueOfDistributorNotesReceivableDetail Carrying Value of Distributor Notes Receivable (Detail) Details 68 false false R69.htm 996085 - Disclosure - Schedule of Fair Value of Notes (Detail) Notes http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureScheduleOfFairValueOfNotesDetail Schedule of Fair Value of Notes (Detail) Details 69 false false R70.htm 996095 - Disclosure - Schedule of Fair Value of Notes (Parenthetical) (Detail) Notes http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureScheduleOfFairValueOfNotesParentheticalDetail Schedule of Fair Value of Notes (Parenthetical) (Detail) Details 70 false false R71.htm 996115 - Disclosure - Net Fair Value of Interest Price Risk (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureNetFairValueOfInterestPriceRiskDetail Net Fair Value of Interest Price Risk (Detail) Details 71 false false R72.htm 996125 - Disclosure - Derivative Financial Instruments - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureDerivativeFinancialInstrumentsAdditionalInformationDetail Derivative Financial Instruments - Additional Information (Detail) Details 72 false false R73.htm 996135 - Disclosure - Derivative Instruments Located on Condensed Consolidated Balance Sheet (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureDerivativeInstrumentsLocatedOnCondensedConsolidatedBalanceSheetDetail Derivative Instruments Located on Condensed Consolidated Balance Sheet (Detail) Details 73 false false R74.htm 996145 - Disclosure - Effect of Derivative Instruments for Deferred Gains And (Losses) on Closed Contracts and Effective Portion in Fair Value on AOCI, Utilized for Risk Management Purposes (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureEffectOfDerivativeInstrumentsForDeferredGainsAndLossesOnClosedContractsAndEffectivePortionInFairValueOnAociUtilizedForRiskMan Effect of Derivative Instruments for Deferred Gains And (Losses) on Closed Contracts and Effective Portion in Fair Value on AOCI, Utilized for Risk Management Purposes (Detail) Details 74 false false R75.htm 996155 - Disclosure - Accumulated Other Comprehensive Loss (Income) Related to Derivative Transactions (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossIncomeRelatedToDerivativeTransactionsDetail Accumulated Other Comprehensive Loss (Income) Related to Derivative Transactions (Detail) Details http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAociTables 75 false false R76.htm 996165 - Disclosure - Financial Contracts Hedging Commodity Risk (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureFinancialContractsHedgingCommodityRiskDetail Financial Contracts Hedging Commodity Risk (Detail) Details 76 false false R77.htm 996175 - Disclosure - Components of Other Current Assets (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureComponentsOfOtherCurrentAssetsDetail Components of Other Current Assets (Detail) Details 77 false false R78.htm 996185 - Disclosure - Components of Other Non-Current Assets (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureComponentsOfOtherNonCurrentAssetsDetail Components of Other Non-Current Assets (Detail) Details 78 false false R79.htm 996195 - Disclosure - Components of Other Accrued Liabilities (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureComponentsOfOtherAccruedLiabilitiesDetail Components of Other Accrued Liabilities (Detail) Details 79 false false R80.htm 996215 - Disclosure - Components of Other Long-term Liabilities (Details) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureComponentsOfOtherLongTermLiabilitiesDetails Components of Other Long-term Liabilities (Details) Details 80 false false R81.htm 996235 - Disclosure - Assets Held for Sale (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureAssetsHeldForSaleDetail Assets Held for Sale (Detail) Details http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureAssetsHeldForSaleTables 81 false false R82.htm 996245 - Disclosure - Long Term Debt (Net of Issuance Costs and Debt Discounts Excluding Line-of-credit Arrangements) (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureLongTermDebtNetOfIssuanceCostsAndDebtDiscountsExcludingLineOfCreditArrangementsDetail Long Term Debt (Net of Issuance Costs and Debt Discounts Excluding Line-of-credit Arrangements) (Detail) Details 82 false false R83.htm 996265 - Disclosure - Long Term Debt (Net of Issuance Costs and Debt Discounts Excluding Line-of-credit Arrangements) (Parenthetical) (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureLongTermDebtNetOfIssuanceCostsAndDebtDiscountsExcludingLineOfCreditArrangementsParentheticalDetail Long Term Debt (Net of Issuance Costs and Debt Discounts Excluding Line-of-credit Arrangements) (Parenthetical) (Detail) Details 83 false false R84.htm 996275 - Disclosure - Debt and Other Obligations - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureDebtAndOtherObligationsAdditionalInformationDetail Debt and Other Obligations - Additional Information (Detail) Details 84 false false R85.htm 996285 - Disclosure - Schedule of Borrowings and Repayments Under Facility (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureScheduleOfBorrowingsAndRepaymentsUnderFacilityDetail Schedule of Borrowings and Repayments Under Facility (Detail) Details 85 false false R86.htm 996295 - Disclosure - Schedule of Net Amount Available Under Facility (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureScheduleOfNetAmountAvailableUnderFacilityDetail Schedule of Net Amount Available Under Facility (Detail) Details 86 false false R87.htm 996305 - Disclosure - Schedule of Highest and Lowest Outstanding Balance Under Facility (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureScheduleOfHighestAndLowestOutstandingBalanceUnderFacilityDetail Schedule of Highest and Lowest Outstanding Balance Under Facility (Detail) Details 87 false false R88.htm 996315 - Disclosure - Aggregate Maturities of Debt Outstanding (Including Capital Leases) (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureAggregateMaturitiesOfDebtOutstandingIncludingCapitalLeasesDetail Aggregate Maturities of Debt Outstanding (Including Capital Leases) (Detail) Details 88 false false R89.htm 996335 - Disclosure - Variable Interest Entities - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureVariableInterestEntitiesAdditionalInformationDetail Variable Interest Entities - Additional Information (Detail) Details 89 false false R90.htm 996345 - Disclosure - Commitments and Contingencies - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureCommitmentsAndContingenciesAdditionalInformationDetail Commitments and Contingencies - Additional Information (Detail) Details 90 false false R91.htm 996355 - Disclosure - Basic and Diluted Earnings per Common Share (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureBasicAndDilutedEarningsPerCommonShareDetail Basic and Diluted Earnings per Common Share (Detail) Details 91 false false R92.htm 996365 - Disclosure - Earnings Per Share - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureEarningsPerShareAdditionalInformationDetail Earnings Per Share - Additional Information (Detail) Details 92 false false R93.htm 996405 - Disclosure - Performance Contingent TSR Shares (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosurePerformanceContingentTSRSharesDetail Performance Contingent TSR Shares (Detail) Details 93 false false R94.htm 996415 - Disclosure - Stock-Based Compensation (Performance-Contingent Return on Invested Capital Shares) - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureStockBasedCompensationPerformanceContingentReturnOnInvestedCapitalSharesAdditionalInformationDetail Stock-Based Compensation (Performance-Contingent Return on Invested Capital Shares) - Additional Information (Detail) Details http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureStockBasedCompensationTables 94 false false R95.htm 996435 - Disclosure - Performance Contingent ROIC Shares (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosurePerformanceContingentROICSharesDetail Performance Contingent ROIC Shares (Detail) Details 95 false false R96.htm 996445 - Disclosure - Performance-Contingent Restricted Stock Awards (Details) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosurePerformancecontingentRestrictedStockAwardsDetails Performance-Contingent Restricted Stock Awards (Details) Details 96 false false R97.htm 996455 - Disclosure - Performance-Contingent Restricted Stock Activity (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosurePerformanceContingentRestrictedStockActivityDetail Performance-Contingent Restricted Stock Activity (Detail) Details 97 false false R98.htm 996465 - Disclosure - Stock-Based Compensation (Performance-Contingent Restricted Stock) - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureStockBasedCompensationPerformanceContingentRestrictedStockAdditionalInformationDetail Stock-Based Compensation (Performance-Contingent Restricted Stock) - Additional Information (Detail) Details http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureStockBasedCompensationTables 98 false false R99.htm 996485 - Disclosure - Time-Based Restricted Stock Units (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureTimeBasedRestrictedStockUnitsDetail Time-Based Restricted Stock Units (Detail) Details 99 false false R100.htm 996495 - Disclosure - Time-Based Restricted Stock Units Activity (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureTimeBasedRestrictedStockUnitsActivityDetail Time-Based Restricted Stock Units Activity (Detail) Details 100 false false R101.htm 996505 - Disclosure - Vesting Time-Based Restricted Stock Units (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureVestingTimeBasedRestrictedStockUnitsDetail Vesting Time-Based Restricted Stock Units (Detail) Details 101 false false R102.htm 996535 - Disclosure - Summary of Company's Stock-Based Compensation Expense (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureSummaryOfCompanySStockBasedCompensationExpenseDetail Summary of Company's Stock-Based Compensation Expense (Detail) Details 102 false false R103.htm 996545 - Disclosure - Summary of Company's Condensed Consolidated Balance Sheets Related Pension and Other Postretirement Benefit Plan (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureSummaryOfCompanysCondensedConsolidatedBalanceSheetsRelatedPensionAndOtherPostretirementBenefitPlanDetail Summary of Company's Condensed Consolidated Balance Sheets Related Pension and Other Postretirement Benefit Plan (Detail) Details 103 false false R104.htm 996555 - Disclosure - Postretirement Plans - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosurePostretirementPlansAdditionalInformationDetail Postretirement Plans - Additional Information (Detail) Details 104 false false R105.htm 996565 - Disclosure - Components of Net Periodic Benefit Cost (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureComponentsOfNetPeriodicBenefitCostDetail Components of Net Periodic Benefit Cost (Detail) Details 105 false false R106.htm 996575 - Disclosure - Summary of Total Cost and Employer Contributions (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureSummaryOfTotalCostAndEmployerContributionsDetail Summary of Total Cost and Employer Contributions (Detail) Details 106 false false R107.htm 996585 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) Details 107 false false R108.htm 996595 - Disclosure - Subsequent Events - Additional Information (Detail) Sheet http://www.flowersfoods.com/20260425/taxonomy/role/DisclosureSubsequentEventsAdditionalInformationDetail Subsequent Events - Additional Information (Detail) Details 108 false false All Reports Book All Reports flo-20260425.htm flo-20260425.xsd http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/ecd/2025 false false