3.20.4 html 387 564 1 false 99 0 false 5 false false R1.htm 000010001 - Document - Cover Sheet http://www.moneygram.com/role/Cover Cover Cover 1 false false R2.htm 100010002 - Statement - Condensed Consolidated Balance Sheets Sheet http://www.moneygram.com/role/CondensedConsolidatedBalanceSheets Condensed Consolidated Balance Sheets Statements 2 false false R3.htm 100020003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Sheet http://www.moneygram.com/role/CondensedConsolidatedBalanceSheetsParenthetical Condensed Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 100030004 - Statement - Condensed Consolidated Statements of Operations Sheet http://www.moneygram.com/role/CondensedConsolidatedStatementsofOperations Condensed Consolidated Statements of Operations Statements 4 false false R5.htm 100040005 - Statement - Condensed Consolidated Statements of Comprehensive (Loss) Income Sheet http://www.moneygram.com/role/CondensedConsolidatedStatementsofComprehensiveLossIncome Condensed Consolidated Statements of Comprehensive (Loss) Income Statements 5 false false R6.htm 100050006 - Statement - Consolidated Statements of Comprehensive Loss (Parenthetical) Sheet http://www.moneygram.com/role/ConsolidatedStatementsofComprehensiveLossParenthetical Consolidated Statements of Comprehensive Loss (Parenthetical) Statements 6 false false R7.htm 100060007 - Statement - Consolidated Statements of Cash Flows Sheet http://www.moneygram.com/role/ConsolidatedStatementsofCashFlows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 100070008 - Statement - Consdensed Consolidated Statements of Stockholders' Deficit Sheet http://www.moneygram.com/role/ConsdensedConsolidatedStatementsofStockholdersDeficit Consdensed Consolidated Statements of Stockholders' Deficit Statements 8 false false R9.htm 210011001 - Disclosure - Description of the Business and Basis of Presentation Sheet http://www.moneygram.com/role/DescriptionoftheBusinessandBasisofPresentation Description of the Business and Basis of Presentation Notes 9 false false R10.htm 210031002 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.moneygram.com/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 10 false false R11.htm 210121003 - Disclosure - Restructuring and Reorganization Costs Sheet http://www.moneygram.com/role/RestructuringandReorganizationCosts Restructuring and Reorganization Costs Notes 11 false false R12.htm 210181004 - Disclosure - Settlement Assets and Payment Service Obligations Sheet http://www.moneygram.com/role/SettlementAssetsandPaymentServiceObligations Settlement Assets and Payment Service Obligations Notes 12 false false R13.htm 210211005 - Disclosure - Fair Value Measurement Sheet http://www.moneygram.com/role/FairValueMeasurement Fair Value Measurement Notes 13 false false R14.htm 210271006 - Disclosure - Investment Portfolio Sheet http://www.moneygram.com/role/InvestmentPortfolio Investment Portfolio Notes 14 false false R15.htm 210331007 - Disclosure - Derivative Financial Instruments Sheet http://www.moneygram.com/role/DerivativeFinancialInstruments Derivative Financial Instruments Notes 15 false false R16.htm 210381008 - Disclosure - Property and Equipment Sheet http://www.moneygram.com/role/PropertyandEquipment Property and Equipment Notes 16 false false R17.htm 210421009 - Disclosure - Goodwill and Intangible Assets Sheet http://www.moneygram.com/role/GoodwillandIntangibleAssets Goodwill and Intangible Assets Notes 17 false false R18.htm 210461010 - Disclosure - Debt Sheet http://www.moneygram.com/role/Debt Debt Notes 18 false false R19.htm 210511011 - Disclosure - Pension and Other Benefits Sheet http://www.moneygram.com/role/PensionandOtherBenefits Pension and Other Benefits Notes 19 false false R20.htm 210631012 - Disclosure - Stockholders' Deficit Sheet http://www.moneygram.com/role/StockholdersDeficit Stockholders' Deficit Notes 20 false false R21.htm 210701013 - Disclosure - Stock-Based Compensation Sheet http://www.moneygram.com/role/StockBasedCompensation Stock-Based Compensation Notes 21 false false R22.htm 210781014 - Disclosure - Income Taxes Sheet http://www.moneygram.com/role/IncomeTaxes Income Taxes Notes 22 false false R23.htm 210871015 - Disclosure - Commitments and Contingencies Sheet http://www.moneygram.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 23 false false R24.htm 210891016 - Disclosure - Earnings Per Share Sheet http://www.moneygram.com/role/EarningsPerShare Earnings Per Share Notes 24 false false R25.htm 210921017 - Disclosure - Segment Information Sheet http://www.moneygram.com/role/SegmentInformation Segment Information Notes 25 false false R26.htm 211011018 - Disclosure - Revenue Recognition Sheet http://www.moneygram.com/role/RevenueRecognition Revenue Recognition Notes 26 false false R27.htm 211041019 - Disclosure - Leases Sheet http://www.moneygram.com/role/Leases Leases Notes 27 false false R28.htm 211091020 - Disclosure - Related Parties Sheet http://www.moneygram.com/role/RelatedParties Related Parties Notes 28 false false R29.htm 211121021 - Disclosure - Subsequent Events Sheet http://www.moneygram.com/role/SubsequentEvents Subsequent Events Notes 29 false false R30.htm 220042001 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.moneygram.com/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.moneygram.com/role/SummaryofSignificantAccountingPolicies 30 false false R31.htm 220262002 - Disclosure - Fair Value Measures and Disclosures (Policies) Sheet http://www.moneygram.com/role/FairValueMeasuresandDisclosuresPolicies Fair Value Measures and Disclosures (Policies) Policies http://www.moneygram.com/role/SummaryofSignificantAccountingPolicies 31 false false R32.htm 230053001 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.moneygram.com/role/SummaryofSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.moneygram.com/role/SummaryofSignificantAccountingPolicies 32 false false R33.htm 230133002 - Disclosure - Restructuring and Reorganization Costs (Tables) Sheet http://www.moneygram.com/role/RestructuringandReorganizationCostsTables Restructuring and Reorganization Costs (Tables) Tables http://www.moneygram.com/role/RestructuringandReorganizationCosts 33 false false R34.htm 230193003 - Disclosure - Settlement Assets and Payment Service Obligations (Tables) Sheet http://www.moneygram.com/role/SettlementAssetsandPaymentServiceObligationsTables Settlement Assets and Payment Service Obligations (Tables) Tables http://www.moneygram.com/role/SettlementAssetsandPaymentServiceObligations 34 false false R35.htm 230223004 - Disclosure - Fair Value Measurement (Tables) Sheet http://www.moneygram.com/role/FairValueMeasurementTables Fair Value Measurement (Tables) Tables http://www.moneygram.com/role/FairValueMeasurement 35 false false R36.htm 230283005 - Disclosure - Investment Portfolio (Tables) Sheet http://www.moneygram.com/role/InvestmentPortfolioTables Investment Portfolio (Tables) Tables http://www.moneygram.com/role/InvestmentPortfolio 36 false false R37.htm 230343006 - Disclosure - Derivative Financial Instruments (Tables) Sheet http://www.moneygram.com/role/DerivativeFinancialInstrumentsTables Derivative Financial Instruments (Tables) Tables http://www.moneygram.com/role/DerivativeFinancialInstruments 37 false false R38.htm 230393007 - Disclosure - Property and Equipment (Tables) Sheet http://www.moneygram.com/role/PropertyandEquipmentTables Property and Equipment (Tables) Tables http://www.moneygram.com/role/PropertyandEquipment 38 false false R39.htm 230433008 - Disclosure - Goodwill and Intangible Assets (Tables) Sheet http://www.moneygram.com/role/GoodwillandIntangibleAssetsTables Goodwill and Intangible Assets (Tables) Tables http://www.moneygram.com/role/GoodwillandIntangibleAssets 39 false false R40.htm 230473009 - Disclosure - Debt (Tables) Sheet http://www.moneygram.com/role/DebtTables Debt (Tables) Tables http://www.moneygram.com/role/Debt 40 false false R41.htm 230523010 - Disclosure - Pension and Other Benefits (Tables) Sheet http://www.moneygram.com/role/PensionandOtherBenefitsTables Pension and Other Benefits (Tables) Tables http://www.moneygram.com/role/PensionandOtherBenefits 41 false false R42.htm 230643011 - Disclosure - Stockholders' Deficit (Tables) Sheet http://www.moneygram.com/role/StockholdersDeficitTables Stockholders' Deficit (Tables) Tables http://www.moneygram.com/role/StockholdersDeficit 42 false false R43.htm 230713012 - Disclosure - Stock-Based Compensation (Tables) Sheet http://www.moneygram.com/role/StockBasedCompensationTables Stock-Based Compensation (Tables) Tables http://www.moneygram.com/role/StockBasedCompensation 43 false false R44.htm 230793013 - Disclosure - Income Taxes Income Taxes (Tables) Sheet http://www.moneygram.com/role/IncomeTaxesIncomeTaxesTables Income Taxes Income Taxes (Tables) Tables 44 false false R45.htm 230903014 - Disclosure - Earnings Per Share (Tables) Sheet http://www.moneygram.com/role/EarningsPerShareTables Earnings Per Share (Tables) Tables http://www.moneygram.com/role/EarningsPerShare 45 false false R46.htm 230933015 - Disclosure - Segment Information (Tables) Sheet http://www.moneygram.com/role/SegmentInformationTables Segment Information (Tables) Tables http://www.moneygram.com/role/SegmentInformation 46 false false R47.htm 231023016 - Disclosure - Revenue Recognition (Tables) Sheet http://www.moneygram.com/role/RevenueRecognitionTables Revenue Recognition (Tables) Tables http://www.moneygram.com/role/RevenueRecognition 47 false false R48.htm 231053017 - Disclosure - Leases (Tables) Sheet http://www.moneygram.com/role/LeasesTables Leases (Tables) Tables http://www.moneygram.com/role/Leases 48 false false R49.htm 240024001 - Disclosure - Description of the Business and Basis of Presentation (Details) Sheet http://www.moneygram.com/role/DescriptionoftheBusinessandBasisofPresentationDetails Description of the Business and Basis of Presentation (Details) Details http://www.moneygram.com/role/DescriptionoftheBusinessandBasisofPresentation 49 false false R50.htm 240064002 - Disclosure - Summary of Significant Accounting Policies - Receivables (Details) Sheet http://www.moneygram.com/role/SummaryofSignificantAccountingPoliciesReceivablesDetails Summary of Significant Accounting Policies - Receivables (Details) Details 50 false false R51.htm 240074003 - Disclosure - Summary of Significant Accounting Policies - Estimated Useful Lives by Major Asset Category (Details) Sheet http://www.moneygram.com/role/SummaryofSignificantAccountingPoliciesEstimatedUsefulLivesbyMajorAssetCategoryDetails Summary of Significant Accounting Policies - Estimated Useful Lives by Major Asset Category (Details) Details 51 false false R52.htm 240084004 - Disclosure - Summary of SIgnificant Accounting Policies - Amortized Finite Lived Intangible Assets (Details) Sheet http://www.moneygram.com/role/SummaryofSIgnificantAccountingPoliciesAmortizedFiniteLivedIntangibleAssetsDetails Summary of SIgnificant Accounting Policies - Amortized Finite Lived Intangible Assets (Details) Details 52 false false R53.htm 240094005 - Disclosure - Summary of Significant Accounting Policies - Weighted-Average Common Shares Basic and Diluted (Details) Sheet http://www.moneygram.com/role/SummaryofSignificantAccountingPoliciesWeightedAverageCommonSharesBasicandDilutedDetails Summary of Significant Accounting Policies - Weighted-Average Common Shares Basic and Diluted (Details) Details 53 false false R54.htm 240104006 - Disclosure - Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) Sheet http://www.moneygram.com/role/SummaryofSignificantAccountingPoliciesScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) Details 54 false false R55.htm 240114007 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) Sheet http://www.moneygram.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetails Summary of Significant Accounting Policies - Additional Information (Details) Details 55 false false R56.htm 240144008 - Disclosure - Restructuring and Reorganization Costs - Schedule of Restructuring and Reorganization Costs Accrual (Details) Sheet http://www.moneygram.com/role/RestructuringandReorganizationCostsScheduleofRestructuringandReorganizationCostsAccrualDetails Restructuring and Reorganization Costs - Schedule of Restructuring and Reorganization Costs Accrual (Details) Details 56 false false R57.htm 240164010 - Disclosure - Restructuring and Reorganization Costs - Summary of Total Cumulative Restructuring and Reorganization Costs Incurred By Reporting Segment (Details) Sheet http://www.moneygram.com/role/RestructuringandReorganizationCostsSummaryofTotalCumulativeRestructuringandReorganizationCostsIncurredByReportingSegmentDetails Restructuring and Reorganization Costs - Summary of Total Cumulative Restructuring and Reorganization Costs Incurred By Reporting Segment (Details) Details 57 false false R58.htm 240174011 - Disclosure - Restructuring and Reorganization Costs - Additional Information (Details) Sheet http://www.moneygram.com/role/RestructuringandReorganizationCostsAdditionalInformationDetails Restructuring and Reorganization Costs - Additional Information (Details) Details 58 false false R59.htm 240204012 - Disclosure - Settlement Assets and Payment Service Obligations (Details) Sheet http://www.moneygram.com/role/SettlementAssetsandPaymentServiceObligationsDetails Settlement Assets and Payment Service Obligations (Details) Details http://www.moneygram.com/role/SettlementAssetsandPaymentServiceObligationsTables 59 false false R60.htm 240234013 - Disclosure - Fair Value Measurement - Financial Assets and Liabilities Measured at Fair Value by Hierarchy Level (Detail) Sheet http://www.moneygram.com/role/FairValueMeasurementFinancialAssetsandLiabilitiesMeasuredatFairValuebyHierarchyLevelDetail Fair Value Measurement - Financial Assets and Liabilities Measured at Fair Value by Hierarchy Level (Detail) Details 60 false false R61.htm 240244014 - Disclosure - Fair Value Measurement - Roll-forward of Other Asset-Backed Securities (Detail) Sheet http://www.moneygram.com/role/FairValueMeasurementRollforwardofOtherAssetBackedSecuritiesDetail Fair Value Measurement - Roll-forward of Other Asset-Backed Securities (Detail) Details 61 false false R62.htm 240254015 - Disclosure - Fair Value Measurement - Additional Information (Detail) Sheet http://www.moneygram.com/role/FairValueMeasurementAdditionalInformationDetail Fair Value Measurement - Additional Information (Detail) Details 62 false false R63.htm 240294016 - Disclosure - Investment Portfolio - Components of Investment Portfolio (Detail) Sheet http://www.moneygram.com/role/InvestmentPortfolioComponentsofInvestmentPortfolioDetail Investment Portfolio - Components of Investment Portfolio (Detail) Details 63 false false R64.htm 240304017 - Disclosure - Investment Portfolio - Available for Sale Investments (Substantially Restricted) (Detail) Sheet http://www.moneygram.com/role/InvestmentPortfolioAvailableforSaleInvestmentsSubstantiallyRestrictedDetail Investment Portfolio - Available for Sale Investments (Substantially Restricted) (Detail) Details 64 false false R65.htm 240314018 - Disclosure - Investment Portfolio Investment Portfolio - Investment Ratings (Details) Sheet http://www.moneygram.com/role/InvestmentPortfolioInvestmentPortfolioInvestmentRatingsDetails Investment Portfolio Investment Portfolio - Investment Ratings (Details) Details 65 false false R66.htm 240324019 - Disclosure - Investment Portfolio - Additional Information (Detail) Sheet http://www.moneygram.com/role/InvestmentPortfolioAdditionalInformationDetail Investment Portfolio - Additional Information (Detail) Details 66 false false R67.htm 240354020 - Disclosure - Derivative Financial Instruments - Summary of (Gains) Losses Related to Assets and Liabilities Denominated in Foreign Currencies (Detail) Sheet http://www.moneygram.com/role/DerivativeFinancialInstrumentsSummaryofGainsLossesRelatedtoAssetsandLiabilitiesDenominatedinForeignCurrenciesDetail Derivative Financial Instruments - Summary of (Gains) Losses Related to Assets and Liabilities Denominated in Foreign Currencies (Detail) Details 67 false false R68.htm 240364021 - Disclosure - Derivative Financial Instruments - Fair Values of Derivative Forward Contract Instruments (Detail) Sheet http://www.moneygram.com/role/DerivativeFinancialInstrumentsFairValuesofDerivativeForwardContractInstrumentsDetail Derivative Financial Instruments - Fair Values of Derivative Forward Contract Instruments (Detail) Details 68 false false R69.htm 240374022 - Disclosure - Derivative Financial Instruments - Additional Information (Detail) Sheet http://www.moneygram.com/role/DerivativeFinancialInstrumentsAdditionalInformationDetail Derivative Financial Instruments - Additional Information (Detail) Details 69 false false R70.htm 240404023 - Disclosure - Property and Equipment - Components of Property and Equipment (Details) Sheet http://www.moneygram.com/role/PropertyandEquipmentComponentsofPropertyandEquipmentDetails Property and Equipment - Components of Property and Equipment (Details) Details 70 false false R71.htm 240414024 - Disclosure - Property and Equipment - Additional Information (Details) Sheet http://www.moneygram.com/role/PropertyandEquipmentAdditionalInformationDetails Property and Equipment - Additional Information (Details) Details 71 false false R72.htm 240444025 - Disclosure - Goodwill and Intangible Assets - Components of Finite-Lived Intangible Assets (Detail) Sheet http://www.moneygram.com/role/GoodwillandIntangibleAssetsComponentsofFiniteLivedIntangibleAssetsDetail Goodwill and Intangible Assets - Components of Finite-Lived Intangible Assets (Detail) Details 72 false false R73.htm 240454026 - Disclosure - Goodwill and Intangible Assets - Additional Information (Detail) Sheet http://www.moneygram.com/role/GoodwillandIntangibleAssetsAdditionalInformationDetail Goodwill and Intangible Assets - Additional Information (Detail) Details 73 false false R74.htm 240484027 - Disclosure - Debt - Outstanding Debt (Details) Sheet http://www.moneygram.com/role/DebtOutstandingDebtDetails Debt - Outstanding Debt (Details) Details 74 false false R75.htm 240494028 - Disclosure - Debt Debt - Quarterly Financial Covenants (Details) Sheet http://www.moneygram.com/role/DebtDebtQuarterlyFinancialCovenantsDetails Debt Debt - Quarterly Financial Covenants (Details) Details 75 false false R76.htm 240504029 - Disclosure - Debt - Additional Information (Detail) Sheet http://www.moneygram.com/role/DebtAdditionalInformationDetail Debt - Additional Information (Detail) Details 76 false false R77.htm 240534030 - Disclosure - Pension and Other Benefits Pension assumptions (Details) Sheet http://www.moneygram.com/role/PensionandOtherBenefitsPensionassumptionsDetails Pension and Other Benefits Pension assumptions (Details) Details 77 false false R78.htm 240544031 - Disclosure - Pension and Other Benefits Financial Assets Recorded at Fair Value by Hierarchy (Details) Sheet http://www.moneygram.com/role/PensionandOtherBenefitsFinancialAssetsRecordedatFairValuebyHierarchyDetails Pension and Other Benefits Financial Assets Recorded at Fair Value by Hierarchy (Details) Details 78 false false R79.htm 240554032 - Disclosure - Pension and Other Benefits Pension Plan Assets Fair Value (Details) Sheet http://www.moneygram.com/role/PensionandOtherBenefitsPensionPlanAssetsFairValueDetails Pension and Other Benefits Pension Plan Assets Fair Value (Details) Details 79 false false R80.htm 240564033 - Disclosure - Net Periodic Benefit Expense Amortized from Accumulated Other Comprehensive Loss (Detail) Sheet http://www.moneygram.com/role/NetPeriodicBenefitExpenseAmortizedfromAccumulatedOtherComprehensiveLossDetail Net Periodic Benefit Expense Amortized from Accumulated Other Comprehensive Loss (Detail) Details 80 false false R81.htm 240574034 - Disclosure - Pension and Other Benefits Amounts Recognized in Other Comprehensive Income (Loss) (Details) Sheet http://www.moneygram.com/role/PensionandOtherBenefitsAmountsRecognizedinOtherComprehensiveIncomeLossDetails Pension and Other Benefits Amounts Recognized in Other Comprehensive Income (Loss) (Details) Details 81 false false R82.htm 240584035 - Disclosure - Pension and Other Benefits Pension Unfunded Status Table (Details) Sheet http://www.moneygram.com/role/PensionandOtherBenefitsPensionUnfundedStatusTableDetails Pension and Other Benefits Pension Unfunded Status Table (Details) Details 82 false false R83.htm 240594036 - Disclosure - Pension and Other Benefits Amounts Recognized in Balance Sheet (Details) Sheet http://www.moneygram.com/role/PensionandOtherBenefitsAmountsRecognizedinBalanceSheetDetails Pension and Other Benefits Amounts Recognized in Balance Sheet (Details) Details 83 false false R84.htm 240604037 - Disclosure - Pension and Other Benefits Accumulated and Projected Benefit Obligations (Details) Sheet http://www.moneygram.com/role/PensionandOtherBenefitsAccumulatedandProjectedBenefitObligationsDetails Pension and Other Benefits Accumulated and Projected Benefit Obligations (Details) Details 84 false false R85.htm 240614038 - Disclosure - Pension and Other Benefits Expected Benefit Payments (Details) Sheet http://www.moneygram.com/role/PensionandOtherBenefitsExpectedBenefitPaymentsDetails Pension and Other Benefits Expected Benefit Payments (Details) Details 85 false false R86.htm 240624039 - Disclosure - Pension and Other Benefits Additional Information (Details) Sheet http://www.moneygram.com/role/PensionandOtherBenefitsAdditionalInformationDetails Pension and Other Benefits Additional Information (Details) Details 86 false false R87.htm 240654040 - Disclosure - Stockholders' Deficit Schedule of Activity of Company's Common Stock (Details) Sheet http://www.moneygram.com/role/StockholdersDeficitScheduleofActivityofCompanysCommonStockDetails Stockholders' Deficit Schedule of Activity of Company's Common Stock (Details) Details 87 false false R88.htm 240664041 - Disclosure - Stockholders' Deficit Schedule of Accumulated Other Comprehensive Income (Loss) (Details) Sheet http://www.moneygram.com/role/StockholdersDeficitScheduleofAccumulatedOtherComprehensiveIncomeLossDetails Stockholders' Deficit Schedule of Accumulated Other Comprehensive Income (Loss) (Details) Details 88 false false R89.htm 240674042 - Disclosure - Stockholders' Deficit - Summary of Significant Amounts Reclassified (Details) Sheet http://www.moneygram.com/role/StockholdersDeficitSummaryofSignificantAmountsReclassifiedDetails Stockholders' Deficit - Summary of Significant Amounts Reclassified (Details) Details 89 false false R90.htm 240684043 - Disclosure - Stockholders' Deficit - Summary of Changes To Accumulated Other Comprehensive Loss By Component (Details) Sheet http://www.moneygram.com/role/StockholdersDeficitSummaryofChangesToAccumulatedOtherComprehensiveLossByComponentDetails Stockholders' Deficit - Summary of Changes To Accumulated Other Comprehensive Loss By Component (Details) Details 90 false false R91.htm 240694044 - Disclosure - Stockholders' Deficit - Additional Information (Details) Sheet http://www.moneygram.com/role/StockholdersDeficitAdditionalInformationDetails Stockholders' Deficit - Additional Information (Details) Details 91 false false R92.htm 240724045 - Disclosure - Stock-Based Compensation - Summary of Stock-Based Compensation Expense (Detail) Sheet http://www.moneygram.com/role/StockBasedCompensationSummaryofStockBasedCompensationExpenseDetail Stock-Based Compensation - Summary of Stock-Based Compensation Expense (Detail) Details 92 false false R93.htm 240734046 - Disclosure - Stock-Based Compensation - Summary of Stock Option Activity (Detail) Sheet http://www.moneygram.com/role/StockBasedCompensationSummaryofStockOptionActivityDetail Stock-Based Compensation - Summary of Stock Option Activity (Detail) Details 93 false false R94.htm 240754048 - Disclosure - Stock-Based Compensation - Summary of Restricted Stock Unit Activity (Detail) Sheet http://www.moneygram.com/role/StockBasedCompensationSummaryofRestrictedStockUnitActivityDetail Stock-Based Compensation - Summary of Restricted Stock Unit Activity (Detail) Details 94 false false R95.htm 240764049 - Disclosure - Stock-Based Compensation - Restricted Stock and Restricted Stock Unit Compensation Information (Detail) Sheet http://www.moneygram.com/role/StockBasedCompensationRestrictedStockandRestrictedStockUnitCompensationInformationDetail Stock-Based Compensation - Restricted Stock and Restricted Stock Unit Compensation Information (Detail) Details 95 false false R96.htm 240774050 - Disclosure - Stock-Based Compensation - Additional Information (Detail) Sheet http://www.moneygram.com/role/StockBasedCompensationAdditionalInformationDetail Stock-Based Compensation - Additional Information (Detail) Details 96 false false R97.htm 240804051 - Disclosure - Income Taxes Income Taxes - Components of Income (Loss) Before Income Taxes (Details) Sheet http://www.moneygram.com/role/IncomeTaxesIncomeTaxesComponentsofIncomeLossBeforeIncomeTaxesDetails Income Taxes Income Taxes - Components of Income (Loss) Before Income Taxes (Details) Details 97 false false R98.htm 240814052 - Disclosure - Income Taxes Income Taxes - Income Tax (Benefit) Expense (Details) Sheet http://www.moneygram.com/role/IncomeTaxesIncomeTaxesIncomeTaxBenefitExpenseDetails Income Taxes Income Taxes - Income Tax (Benefit) Expense (Details) Details 98 false false R99.htm 240824053 - Disclosure - Income Taxes Income Taxes - Reconciliation of the Expected Federal Income Tax at Statutory Rates (Details) Sheet http://www.moneygram.com/role/IncomeTaxesIncomeTaxesReconciliationoftheExpectedFederalIncomeTaxatStatutoryRatesDetails Income Taxes Income Taxes - Reconciliation of the Expected Federal Income Tax at Statutory Rates (Details) Details 99 false false R100.htm 240834054 - Disclosure - Income Taxes Income Taxes - Deferred Tax Assets and Liabilities (Details) Sheet http://www.moneygram.com/role/IncomeTaxesIncomeTaxesDeferredTaxAssetsandLiabilitiesDetails Income Taxes Income Taxes - Deferred Tax Assets and Liabilities (Details) Details 100 false false R101.htm 240844055 - Disclosure - Income Taxes Income Taxes - Amount and Expiration Dates of Tax Loss Carry Forwards (Not Tax Effected) and Credit Carry Forwards (Details) Sheet http://www.moneygram.com/role/IncomeTaxesIncomeTaxesAmountandExpirationDatesofTaxLossCarryForwardsNotTaxEffectedandCreditCarryForwardsDetails Income Taxes Income Taxes - Amount and Expiration Dates of Tax Loss Carry Forwards (Not Tax Effected) and Credit Carry Forwards (Details) Details 101 false false R102.htm 240854056 - Disclosure - Income Taxes Income Taxes - Reconciliation of Unrecognized Tax Benefits for the Period (Details) Sheet http://www.moneygram.com/role/IncomeTaxesIncomeTaxesReconciliationofUnrecognizedTaxBenefitsforthePeriodDetails Income Taxes Income Taxes - Reconciliation of Unrecognized Tax Benefits for the Period (Details) Details 102 false false R103.htm 240864057 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.moneygram.com/role/IncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) Details 103 false false R104.htm 240884058 - Disclosure - Commitments and Contingencies - Additional Information (Detail) Sheet http://www.moneygram.com/role/CommitmentsandContingenciesAdditionalInformationDetail Commitments and Contingencies - Additional Information (Detail) Details 104 false false R105.htm 240944060 - Disclosure - Segment Information - Revenue by Segment (Detail) Sheet http://www.moneygram.com/role/SegmentInformationRevenuebySegmentDetail Segment Information - Revenue by Segment (Detail) Details 105 false false R106.htm 240954061 - Disclosure - Segment Information - Operating Income by Segment (Detail) Sheet http://www.moneygram.com/role/SegmentInformationOperatingIncomebySegmentDetail Segment Information - Operating Income by Segment (Detail) Details 106 false false R107.htm 240964062 - Disclosure - Segment Information Segment Information - Depreciation and Amortization (Details) Sheet http://www.moneygram.com/role/SegmentInformationSegmentInformationDepreciationandAmortizationDetails Segment Information Segment Information - Depreciation and Amortization (Details) Details 107 false false R108.htm 240974063 - Disclosure - Segment Information Segment Information - Capital Expenditures (Details) Sheet http://www.moneygram.com/role/SegmentInformationSegmentInformationCapitalExpendituresDetails Segment Information Segment Information - Capital Expenditures (Details) Details 108 false false R109.htm 240984064 - Disclosure - Segment Information - Assets by Segment (Detail) Sheet http://www.moneygram.com/role/SegmentInformationAssetsbySegmentDetail Segment Information - Assets by Segment (Detail) Details 109 false false R110.htm 240994065 - Disclosure - Segment Information Segment Information - Revenue by Geography (Details) Sheet http://www.moneygram.com/role/SegmentInformationSegmentInformationRevenuebyGeographyDetails Segment Information Segment Information - Revenue by Geography (Details) Details 110 false false R111.htm 241004066 - Disclosure - Segment Information - Additional Information (Detail) Sheet http://www.moneygram.com/role/SegmentInformationAdditionalInformationDetail Segment Information - Additional Information (Detail) Details 111 false false R112.htm 241034067 - Disclosure - Revenue Recognition Revenue Recognition - Services & Products (Details) Sheet http://www.moneygram.com/role/RevenueRecognitionRevenueRecognitionServicesProductsDetails Revenue Recognition Revenue Recognition - Services & Products (Details) Details 112 false false R113.htm 241064068 - Disclosure - Leases Leases - Summary of the Lease Expense and Supplemental Cash Flow Information (Details) Sheet http://www.moneygram.com/role/LeasesLeasesSummaryoftheLeaseExpenseandSupplementalCashFlowInformationDetails Leases Leases - Summary of the Lease Expense and Supplemental Cash Flow Information (Details) Details 113 false false R114.htm 241074069 - Disclosure - Leases Leases - Schedule of Operating Lease Maturities (Details) Sheet http://www.moneygram.com/role/LeasesLeasesScheduleofOperatingLeaseMaturitiesDetails Leases Leases - Schedule of Operating Lease Maturities (Details) Details 114 false false R115.htm 241084070 - Disclosure - Leases Leases - Additional Information (Details) Sheet http://www.moneygram.com/role/LeasesLeasesAdditionalInformationDetails Leases Leases - Additional Information (Details) Details 115 false false R116.htm 241104071 - Disclosure - Related Parties Related Parties - Ripple Transactions (Details) Sheet http://www.moneygram.com/role/RelatedPartiesRelatedPartiesRippleTransactionsDetails Related Parties Related Parties - Ripple Transactions (Details) Details 116 false false R117.htm 241114072 - Disclosure - Related Parties Related Parties - Additional Information (Details) Sheet http://www.moneygram.com/role/RelatedPartiesRelatedPartiesAdditionalInformationDetails Related Parties Related Parties - Additional Information (Details) Details 117 false false R118.htm 241144074 - Disclosure - Subsequent Events (Details) Sheet http://www.moneygram.com/role/SubsequentEventsDetails_1 Subsequent Events (Details) Details http://www.moneygram.com/role/SubsequentEvents 118 false false All Reports Book All Reports mgi-20201231.htm mgi-20201231.xsd mgi-20201231_cal.xml mgi-20201231_def.xml mgi-20201231_lab.xml mgi-20201231_pre.xml mgi20201231ex1028.htm mgi20201231ex21.htm mgi20201231ex23.htm mgi20201231ex24.htm mgi20201231ex311.htm mgi20201231ex312.htm mgi20201231ex321.htm mgi20201231ex322.htm mgi20201231ex44.htm mgi-20201231_g1.jpg mgi-20201231_g2.jpg http://xbrl.sec.gov/dei/2020-01-31 http://fasb.org/srt/2020-01-31 http://fasb.org/us-gaap/2020-01-31 true true