3.20.2 html 242 350 1 false 50 0 false 8 false false R1.htm 100000 - Document - Document And Entity Information Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DocumentDocumentAndEntityInformation Document And Entity Information Cover 1 false false R2.htm 100010 - Statement - CONSOLIDATED INTERIM STATEMENTS OF OPERATIONS (Unaudited) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/StatementCONSOLIDATEDINTERIMSTATEMENTSOFOPERATIONSUnaudited CONSOLIDATED INTERIM STATEMENTS OF OPERATIONS (Unaudited) Statements 2 false false R3.htm 100020 - Statement - CONSOLIDATED INTERIM STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/StatementCONSOLIDATEDINTERIMSTATEMENTSOFCOMPREHENSIVELOSSINCOMEUnaudited CONSOLIDATED INTERIM STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) Statements 3 false false R4.htm 100030 - Statement - CONSOLIDATED INTERIM BALANCE SHEETS (Unaudited) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/StatementCONSOLIDATEDINTERIMBALANCESHEETSUnaudited CONSOLIDATED INTERIM BALANCE SHEETS (Unaudited) Statements 4 false false R5.htm 100040 - Statement - CONSOLIDATED INTERIM BALANCE SHEETS (Unaudited) (Parenthetical) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/StatementCONSOLIDATEDINTERIMBALANCESHEETSUnauditedParenthetical CONSOLIDATED INTERIM BALANCE SHEETS (Unaudited) (Parenthetical) Statements 5 false false R6.htm 100050 - Statement - CONSOLIDATED INTERIM STATEMENTS OF CASH FLOWS (Unaudited) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/StatementCONSOLIDATEDINTERIMSTATEMENTSOFCASHFLOWSUnaudited CONSOLIDATED INTERIM STATEMENTS OF CASH FLOWS (Unaudited) Statements 6 false false R7.htm 100060 - Statement - CONSOLIDATED INTERIM STATEMENTS OF EQUITY (DEFICIT) (Unaudited) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/StatementCONSOLIDATEDINTERIMSTATEMENTSOFEQUITYDEFICITUnaudited CONSOLIDATED INTERIM STATEMENTS OF EQUITY (DEFICIT) (Unaudited) Statements 7 false false R8.htm 100070 - Disclosure - Background and Basis of Presentation Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureBackgroundAndBasisOfPresentation Background and Basis of Presentation Notes 8 false false R9.htm 100080 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 9 false false R10.htm 100090 - Disclosure - Revenue Recognition and Contracts with Customers Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureRevenueRecognitionAndContractsWithCustomers Revenue Recognition and Contracts with Customers Notes 10 false false R11.htm 100100 - Disclosure - Research, Development & Engineering Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureResearchDevelopmentEngineering Research, Development & Engineering Notes 11 false false R12.htm 100110 - Disclosure - Other Expense, Net Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherExpenseNet Other Expense, Net Notes 12 false false R13.htm 100120 - Disclosure - Income Taxes Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureIncomeTaxes Income Taxes Notes 13 false false R14.htm 100130 - Disclosure - Accounts, Notes and Other Receivables???Net Notes http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccountsNotesAndOtherReceivablesNet Accounts, Notes and Other Receivables???Net Notes 14 false false R15.htm 100140 - Disclosure - Factoring and Notes Receivable Notes http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureFactoringAndNotesReceivable Factoring and Notes Receivable Notes 15 false false R16.htm 100150 - Disclosure - Inventories-Net Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureInventoriesNet Inventories-Net Notes 16 false false R17.htm 100160 - Disclosure - Other Assets Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherAssets Other Assets Notes 17 false false R18.htm 100170 - Disclosure - Accrued Liabilities Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccruedLiabilities Accrued Liabilities Notes 18 false false R19.htm 100180 - Disclosure - Other Liabilities Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherLiabilities Other Liabilities Notes 19 false false R20.htm 100190 - Disclosure - Leases Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureLeases Leases Notes 20 false false R21.htm 100200 - Disclosure - Financial Instruments and Fair Value Measures Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureFinancialInstrumentsAndFairValueMeasures Financial Instruments and Fair Value Measures Notes 21 false false R22.htm 100210 - Disclosure - Accumulated Other Comprehensive Income (Loss) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLoss Accumulated Other Comprehensive Income (Loss) Notes 22 false false R23.htm 100220 - Disclosure - Earnings Per Share Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureEarningsPerShare Earnings Per Share Notes 23 false false R24.htm 100230 - Disclosure - Commitments and Contingencies Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 24 false false R25.htm 100240 - Disclosure - Pension Benefits Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosurePensionBenefits Pension Benefits Notes 25 false false R26.htm 100250 - Disclosure - China Variable Interest Entity Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureChinaVariableInterestEntity China Variable Interest Entity Notes 26 false false R27.htm 100260 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies 27 false false R28.htm 100270 - Disclosure - Background and Basis of Presentation (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureBackgroundAndBasisOfPresentationTables Background and Basis of Presentation (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureBackgroundAndBasisOfPresentation 28 false false R29.htm 100280 - Disclosure - Revenue Recognition and Contracts with Customers (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureRevenueRecognitionAndContractsWithCustomersTables Revenue Recognition and Contracts with Customers (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureRevenueRecognitionAndContractsWithCustomers 29 false false R30.htm 100290 - Disclosure - Research, Development & Engineering (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureResearchDevelopmentEngineeringTables Research, Development & Engineering (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureResearchDevelopmentEngineering 30 false false R31.htm 100300 - Disclosure - Other Expenses, Net (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherExpensesNetTables Other Expenses, Net (Tables) Tables 31 false false R32.htm 100310 - Disclosure - Income Taxes (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureIncomeTaxes 32 false false R33.htm 100320 - Disclosure - Accounts, Notes and Other Receivables???Net (Tables) Notes http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccountsNotesAndOtherReceivablesNetTables Accounts, Notes and Other Receivables???Net (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccountsNotesAndOtherReceivablesNet 33 false false R34.htm 100330 - Disclosure - Inventories-Net (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureInventoriesNetTables Inventories-Net (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureInventoriesNet 34 false false R35.htm 100340 - Disclosure - Other Assets (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherAssetsTables Other Assets (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherAssets 35 false false R36.htm 100350 - Disclosure - Accrued Liabilities (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccruedLiabilitiesTables Accrued Liabilities (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccruedLiabilities 36 false false R37.htm 100360 - Disclosure - Other Liabilities (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherLiabilitiesTables Other Liabilities (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherLiabilities 37 false false R38.htm 100370 - Disclosure - Leases (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureLeasesTables Leases (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureLeases 38 false false R39.htm 100380 - Disclosure - Financial Instruments and Fair Value Measures (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureFinancialInstrumentsAndFairValueMeasuresTables Financial Instruments and Fair Value Measures (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureFinancialInstrumentsAndFairValueMeasures 39 false false R40.htm 100390 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossTables Accumulated Other Comprehensive Income (Loss) (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLoss 40 false false R41.htm 100400 - Disclosure - Earnings Per Share (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureEarningsPerShareTables Earnings Per Share (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureEarningsPerShare 41 false false R42.htm 100410 - Disclosure - Commitments and Contingencies (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureCommitmentsAndContingenciesTables Commitments and Contingencies (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureCommitmentsAndContingencies 42 false false R43.htm 100420 - Disclosure - Pension Benefits (Tables) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosurePensionBenefitsTables Pension Benefits (Tables) Tables http://www.garrettmotion.com/20200630/taxonomy/role/DisclosurePensionBenefits 43 false false R44.htm 100440 - Disclosure - Background and Basis of Presentation - Additional Information (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureBackgroundAndBasisOfPresentationAdditionalInformationDetails Background and Basis of Presentation - Additional Information (Details) Details 44 false false R45.htm 100450 - Disclosure - Background and Basis of Presentation - Schedule of Consolidated Net Secured Leverage Ratio (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureBackgroundAndBasisOfPresentationScheduleOfConsolidatedNetSecuredLeverageRatioDetails Background and Basis of Presentation - Schedule of Consolidated Net Secured Leverage Ratio (Details) Details 45 false false R46.htm 100460 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails Summary of Significant Accounting Policies - Additional Information (Details) Details 46 false false R47.htm 100470 - Disclosure - Revenue Recognition and Contracts with Customers - Summary of Net Sales by Region and Channel (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureRevenueRecognitionAndContractsWithCustomersSummaryOfNetSalesByRegionAndChannelDetails Revenue Recognition and Contracts with Customers - Summary of Net Sales by Region and Channel (Details) Details 47 false false R48.htm 100480 - Disclosure - Revenue Recognition and Contracts with Customers - Summary of Contract Assets and Liabilities (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureRevenueRecognitionAndContractsWithCustomersSummaryOfContractAssetsAndLiabilitiesDetails Revenue Recognition and Contracts with Customers - Summary of Contract Assets and Liabilities (Details) Details 48 false false R49.htm 100490 - Disclosure - Research, Development & Engineering - Summary of Research, Development & Engineering Activities (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureResearchDevelopmentEngineeringSummaryOfResearchDevelopmentEngineeringActivitiesDetails Research, Development & Engineering - Summary of Research, Development & Engineering Activities (Details) Details 49 false false R50.htm 100500 - Disclosure - Other Expense, Net - Schedule of Other Operating Cost and Expense (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherExpenseNetScheduleOfOtherOperatingCostAndExpenseDetails Other Expense, Net - Schedule of Other Operating Cost and Expense (Details) Details 50 false false R51.htm 100510 - Disclosure - Income Taxes - Tax Expense (Benefit) and Effective Tax Rate (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureIncomeTaxesTaxExpenseBenefitAndEffectiveTaxRateDetails Income Taxes - Tax Expense (Benefit) and Effective Tax Rate (Details) Details 51 false false R52.htm 100520 - Disclosure - Income Taxes - Additional Information (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationDetails Income Taxes - Additional Information (Details) Details 52 false false R53.htm 100530 - Disclosure - Accounts, Notes and Other Receivables Net - Schedule of Accounts, Notes and Other Receivables Net (Details) Notes http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccountsNotesAndOtherReceivablesNetScheduleOfAccountsNotesAndOtherReceivablesNetDetails Accounts, Notes and Other Receivables Net - Schedule of Accounts, Notes and Other Receivables Net (Details) Details 53 false false R54.htm 100540 - Disclosure - Accounts, Notes and Other Receivables Net - Additional Information (Details) Notes http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccountsNotesAndOtherReceivablesNetAdditionalInformationDetails Accounts, Notes and Other Receivables Net - Additional Information (Details) Details 54 false false R55.htm 100550 - Disclosure - Factoring and Notes Receivable - Additional Information (Details) Notes http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureFactoringAndNotesReceivableAdditionalInformationDetails Factoring and Notes Receivable - Additional Information (Details) Details 55 false false R56.htm 100560 - Disclosure - Inventories-Net - Summary of Inventories (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureInventoriesNetSummaryOfInventoriesDetails Inventories-Net - Summary of Inventories (Details) Details 56 false false R57.htm 100570 - Disclosure - Other Assets - Schedule of Other Assets (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherAssetsScheduleOfOtherAssetsDetails Other Assets - Schedule of Other Assets (Details) Details 57 false false R58.htm 100580 - Disclosure - Accrued Liabilities - Summary of Accrued Liabilities (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccruedLiabilitiesSummaryOfAccruedLiabilitiesDetails Accrued Liabilities - Summary of Accrued Liabilities (Details) Details 58 false false R59.htm 100590 - Disclosure - Accrued Liabilities - Summary of Accrued Liabilities (Parenthetical) (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccruedLiabilitiesSummaryOfAccruedLiabilitiesParentheticalDetails Accrued Liabilities - Summary of Accrued Liabilities (Parenthetical) (Details) Details 59 false false R60.htm 100600 - Disclosure - Accrued Liabilities - Summary of Expenses Related to the Repositioning Accruals (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccruedLiabilitiesSummaryOfExpensesRelatedToRepositioningAccrualsDetails Accrued Liabilities - Summary of Expenses Related to the Repositioning Accruals (Details) Details 60 false false R61.htm 100610 - Disclosure - Other Liabilities - Schedule of Other Liabilities (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureOtherLiabilitiesScheduleOfOtherLiabilitiesDetails Other Liabilities - Schedule of Other Liabilities (Details) Details 61 false false R62.htm 100620 - Disclosure - Leases - Additional Information (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureLeasesAdditionalInformationDetails Leases - Additional Information (Details) Details 62 false false R63.htm 100630 - Disclosure - Leases - Summary of Components of Lease Expense (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureLeasesSummaryOfComponentsOfLeaseExpenseDetails Leases - Summary of Components of Lease Expense (Details) Details 63 false false R64.htm 100640 - Disclosure - Leases - Summary of Supplemental Cash Flow Information Related to Operating Leases (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureLeasesSummaryOfSupplementalCashFlowInformationRelatedToOperatingLeasesDetails Leases - Summary of Supplemental Cash Flow Information Related to Operating Leases (Details) Details 64 false false R65.htm 100650 - Disclosure - Leases - Summary of Supplemental Balance Sheet Information Related to Operating Leases (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureLeasesSummaryOfSupplementalBalanceSheetInformationRelatedToOperatingLeasesDetails Leases - Summary of Supplemental Balance Sheet Information Related to Operating Leases (Details) Details 65 false false R66.htm 100660 - Disclosure - Leases - Schedule of Maturities of Operating Lease Liabilities (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureLeasesScheduleOfMaturitiesOfOperatingLeaseLiabilitiesDetails Leases - Schedule of Maturities of Operating Lease Liabilities (Details) Details 66 false false R67.htm 100680 - Disclosure - Financial Instruments and Fair Value Measures - Additional Information (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureFinancialInstrumentsAndFairValueMeasuresAdditionalInformationDetails Financial Instruments and Fair Value Measures - Additional Information (Details) Details 67 false false R68.htm 100690 - Disclosure - Financial Instruments and Fair Value Measures - Summary of Financial Assets and Liabilities Accounted for at Fair Value on Recurring Basis (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureFinancialInstrumentsAndFairValueMeasuresSummaryOfFinancialAssetsAndLiabilitiesAccountedForAtFairValueOnRecurringBasisDetails Financial Instruments and Fair Value Measures - Summary of Financial Assets and Liabilities Accounted for at Fair Value on Recurring Basis (Details) Details 68 false false R69.htm 100700 - Disclosure - Financial Instruments and Fair Value Measures - Summary of Financial Assets and Liabilities Not Carried at Fair Value (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureFinancialInstrumentsAndFairValueMeasuresSummaryOfFinancialAssetsAndLiabilitiesNotCarriedAtFairValueDetails Financial Instruments and Fair Value Measures - Summary of Financial Assets and Liabilities Not Carried at Fair Value (Details) Details 69 false false R70.htm 100710 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossSummaryOfChangesInAccumulatedOtherComprehensiveIncomeLossByComponentDetails Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) Details http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossTables 70 false false R71.htm 100720 - Disclosure - Earnings Per Share - Schedule of Basic and Diluted Earnings Per Share (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureEarningsPerShareScheduleOfBasicAndDilutedEarningsPerShareDetails Earnings Per Share - Schedule of Basic and Diluted Earnings Per Share (Details) Details 71 false false R72.htm 100730 - Disclosure - Earnings Per Share - Additional Information (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureEarningsPerShareAdditionalInformationDetails Earnings Per Share - Additional Information (Details) Details 72 false false R73.htm 100740 - Disclosure - Commitments and Contingencies - Additional Information (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformationDetails Commitments and Contingencies - Additional Information (Details) Details 73 false false R74.htm 100750 - Disclosure - Commitments and Contingencies - Summary of Obligation Payable to Honeywell (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureCommitmentsAndContingenciesSummaryOfObligationPayableToHoneywellDetails Commitments and Contingencies - Summary of Obligation Payable to Honeywell (Details) Details 74 false false R75.htm 100760 - Disclosure - Commitments and Contingencies - Summary of Asbestos Claims Activity (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureCommitmentsAndContingenciesSummaryOfAsbestosClaimsActivityDetails Commitments and Contingencies - Summary of Asbestos Claims Activity (Details) Details 75 false false R76.htm 100770 - Disclosure - Commitments and Contingencies - Summary of Asbestos Disease Distribution of Unresolved Claims (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureCommitmentsAndContingenciesSummaryOfAsbestosDiseaseDistributionOfUnresolvedClaimsDetails Commitments and Contingencies - Summary of Asbestos Disease Distribution of Unresolved Claims (Details) Details 76 false false R77.htm 100780 - Disclosure - Commitments and Contingencies - Summary of Average Resolutions Per Claim Excluding Legal Costs (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureCommitmentsAndContingenciesSummaryOfAverageResolutionsPerClaimExcludingLegalCostsDetails Commitments and Contingencies - Summary of Average Resolutions Per Claim Excluding Legal Costs (Details) Details 77 false false R78.htm 100790 - Disclosure - Pension Benefits - Additional Information (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosurePensionBenefitsAdditionalInformationDetails Pension Benefits - Additional Information (Details) Details 78 false false R79.htm 100800 - Disclosure - Pension Benefits - Summary of Net Periodic Benefit Cost (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosurePensionBenefitsSummaryOfNetPeriodicBenefitCostDetails Pension Benefits - Summary of Net Periodic Benefit Cost (Details) Details 79 false false R80.htm 100810 - Disclosure - China Variable Interest Entity - Additional Information (Details) Sheet http://www.garrettmotion.com/20200630/taxonomy/role/DisclosureChinaVariableInterestEntityAdditionalInformationDetails China Variable Interest Entity - Additional Information (Details) Details 80 false false All Reports Book All Reports gtx-10q_20200630.htm gtx-20200630.xsd gtx-20200630_cal.xml gtx-20200630_def.xml gtx-20200630_lab.xml gtx-20200630_pre.xml gtx-ex101_32.htm gtx-ex102_33.htm gtx-ex311_6.htm gtx-ex312_9.htm gtx-ex321_7.htm gtx-ex322_8.htm gy0ep1mna0h2000001.jpg gy0ep1mna0h2000002.jpg http://fasb.org/us-gaap/2019-01-31 http://fasb.org/srt/2019-01-31 http://xbrl.sec.gov/country/2017-01-31 http://xbrl.sec.gov/dei/2019-01-31 true true