3.25.1 html 423 593 1 true 123 0 false 10 false false R1.htm 0000001 - Document - Cover Sheet http://borrdrilling.com/role/Cover Cover Cover 1 false false R2.htm 0000002 - Document - Audit Information Sheet http://borrdrilling.com/role/AuditInformation Audit Information Cover 2 false false R3.htm 9952151 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS Sheet http://borrdrilling.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS CONSOLIDATED STATEMENTS OF OPERATIONS Statements 3 false false R4.htm 9952152 - Statement - CONSOLIDATED STATEMENT OF COMPREHENSIVE LOSS Sheet http://borrdrilling.com/role/CONSOLIDATEDSTATEMENTOFCOMPREHENSIVELOSS CONSOLIDATED STATEMENT OF COMPREHENSIVE LOSS Statements 4 false false R5.htm 9952153 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://borrdrilling.com/role/CONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS Statements 5 false false R6.htm 9952154 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://borrdrilling.com/role/CONSOLIDATEDBALANCESHEETSParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 6 false false R7.htm 9952155 - Statement - CONSOLIDATED STATEMENT OF CASH FLOWS Sheet http://borrdrilling.com/role/CONSOLIDATEDSTATEMENTOFCASHFLOWS CONSOLIDATED STATEMENT OF CASH FLOWS Statements 7 false false R8.htm 9952156 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY Sheet http://borrdrilling.com/role/CONSOLIDATEDSTATEMENTOFCHANGESINSHAREHOLDERSEQUITY CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY Statements 8 false false R9.htm 9952157 - Disclosure - General Sheet http://borrdrilling.com/role/General General Notes 9 false false R10.htm 9952158 - Disclosure - Basis of Preparation and Accounting Policies Sheet http://borrdrilling.com/role/BasisofPreparationandAccountingPolicies Basis of Preparation and Accounting Policies Notes 10 false false R11.htm 9952159 - Disclosure - Recently Issued Accounting Standards Sheet http://borrdrilling.com/role/RecentlyIssuedAccountingStandards Recently Issued Accounting Standards Notes 11 false false R12.htm 9952160 - Disclosure - Segments Sheet http://borrdrilling.com/role/Segments Segments Notes 12 false false R13.htm 9952161 - Disclosure - Contracts with Customers Sheet http://borrdrilling.com/role/ContractswithCustomers Contracts with Customers Notes 13 false false R14.htm 9952162 - Disclosure - Gain on Disposals Sheet http://borrdrilling.com/role/GainonDisposals Gain on Disposals Notes 14 false false R15.htm 9952163 - Disclosure - Equity Method Investments Sheet http://borrdrilling.com/role/EquityMethodInvestments Equity Method Investments Notes 15 false false R16.htm 9952164 - Disclosure - Interest expense Sheet http://borrdrilling.com/role/Interestexpense Interest expense Notes 16 false false R17.htm 9952165 - Disclosure - Other Financial Expenses, Net Sheet http://borrdrilling.com/role/OtherFinancialExpensesNet Other Financial Expenses, Net Notes 17 false false R18.htm 9952166 - Disclosure - Taxation Sheet http://borrdrilling.com/role/Taxation Taxation Notes 18 false false R19.htm 9952167 - Disclosure - Earnings per Share Sheet http://borrdrilling.com/role/EarningsperShare Earnings per Share Notes 19 false false R20.htm 9952168 - Disclosure - Other Current Assets Sheet http://borrdrilling.com/role/OtherCurrentAssets Other Current Assets Notes 20 false false R21.htm 9952169 - Disclosure - Newbuildings Sheet http://borrdrilling.com/role/Newbuildings Newbuildings Notes 21 false false R22.htm 9952170 - Disclosure - Jack-up drilling rigs, net Sheet http://borrdrilling.com/role/Jackupdrillingrigsnet Jack-up drilling rigs, net Notes 22 false false R23.htm 9952171 - Disclosure - Leases Sheet http://borrdrilling.com/role/Leases Leases Notes 23 false false R24.htm 9952172 - Disclosure - Other Non-Current Assets Sheet http://borrdrilling.com/role/OtherNonCurrentAssets Other Non-Current Assets Notes 24 false false R25.htm 9952173 - Disclosure - Accrued Expenses Sheet http://borrdrilling.com/role/AccruedExpenses Accrued Expenses Notes 25 false false R26.htm 9952174 - Disclosure - Other Current Liabilities Sheet http://borrdrilling.com/role/OtherCurrentLiabilities Other Current Liabilities Notes 26 false false R27.htm 9952175 - Disclosure - Debt Sheet http://borrdrilling.com/role/Debt Debt Notes 27 false false R28.htm 9952176 - Disclosure - Onerous Contracts Sheet http://borrdrilling.com/role/OnerousContracts Onerous Contracts Notes 28 false false R29.htm 9952177 - Disclosure - Commitments and contingencies Sheet http://borrdrilling.com/role/Commitmentsandcontingencies Commitments and contingencies Notes 29 false false R30.htm 9952178 - Disclosure - Share based compensation Sheet http://borrdrilling.com/role/Sharebasedcompensation Share based compensation Notes 30 false false R31.htm 9952179 - Disclosure - Pensions Sheet http://borrdrilling.com/role/Pensions Pensions Notes 31 false false R32.htm 9952180 - Disclosure - Financial Instruments Sheet http://borrdrilling.com/role/FinancialInstruments Financial Instruments Notes 32 false false R33.htm 9952181 - Disclosure - Related Party Transactions Sheet http://borrdrilling.com/role/RelatedPartyTransactions Related Party Transactions Notes 33 false false R34.htm 9952182 - Disclosure - Stockholders' Equity Sheet http://borrdrilling.com/role/StockholdersEquity Stockholders' Equity Notes 34 false false R35.htm 9952183 - Disclosure - Subsequent Events Sheet http://borrdrilling.com/role/SubsequentEvents Subsequent Events Notes 35 false false R36.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 36 false false R37.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 37 false false R38.htm 995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure Sheet http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure Cybersecurity Risk Management and Strategy Disclosure Notes 38 false false R39.htm 9955511 - Disclosure - Basis of Preparation and Accounting Policies (Policies) Sheet http://borrdrilling.com/role/BasisofPreparationandAccountingPoliciesPolicies Basis of Preparation and Accounting Policies (Policies) Policies http://borrdrilling.com/role/BasisofPreparationandAccountingPolicies 39 false false R40.htm 9955512 - Disclosure - Recently Issued Accounting Standards (Tables) Sheet http://borrdrilling.com/role/RecentlyIssuedAccountingStandardsTables Recently Issued Accounting Standards (Tables) Tables http://borrdrilling.com/role/RecentlyIssuedAccountingStandards 40 false false R41.htm 9955513 - Disclosure - Segments (Tables) Sheet http://borrdrilling.com/role/SegmentsTables Segments (Tables) Tables http://borrdrilling.com/role/Segments 41 false false R42.htm 9955514 - Disclosure - Contracts with Customers (Tables) Sheet http://borrdrilling.com/role/ContractswithCustomersTables Contracts with Customers (Tables) Tables http://borrdrilling.com/role/ContractswithCustomers 42 false false R43.htm 9955515 - Disclosure - Gain on Disposals (Tables) Sheet http://borrdrilling.com/role/GainonDisposalsTables Gain on Disposals (Tables) Tables http://borrdrilling.com/role/GainonDisposals 43 false false R44.htm 9955516 - Disclosure - Equity Method Investments (Tables) Sheet http://borrdrilling.com/role/EquityMethodInvestmentsTables Equity Method Investments (Tables) Tables http://borrdrilling.com/role/EquityMethodInvestments 44 false false R45.htm 9955517 - Disclosure - Interest expense (Tables) Sheet http://borrdrilling.com/role/InterestexpenseTables Interest expense (Tables) Tables http://borrdrilling.com/role/Interestexpense 45 false false R46.htm 9955518 - Disclosure - Other Financial Expenses, Net (Tables) Sheet http://borrdrilling.com/role/OtherFinancialExpensesNetTables Other Financial Expenses, Net (Tables) Tables http://borrdrilling.com/role/OtherFinancialExpensesNet 46 false false R47.htm 9955519 - Disclosure - Taxation (Tables) Sheet http://borrdrilling.com/role/TaxationTables Taxation (Tables) Tables http://borrdrilling.com/role/Taxation 47 false false R48.htm 9955520 - Disclosure - Earnings per Share (Tables) Sheet http://borrdrilling.com/role/EarningsperShareTables Earnings per Share (Tables) Tables http://borrdrilling.com/role/EarningsperShare 48 false false R49.htm 9955521 - Disclosure - Other Current Assets (Tables) Sheet http://borrdrilling.com/role/OtherCurrentAssetsTables Other Current Assets (Tables) Tables http://borrdrilling.com/role/OtherCurrentAssets 49 false false R50.htm 9955522 - Disclosure - Newbuildings (Tables) Sheet http://borrdrilling.com/role/NewbuildingsTables Newbuildings (Tables) Tables http://borrdrilling.com/role/Newbuildings 50 false false R51.htm 9955523 - Disclosure - Jack-up drilling rigs, net (Tables) Sheet http://borrdrilling.com/role/JackupdrillingrigsnetTables Jack-up drilling rigs, net (Tables) Tables http://borrdrilling.com/role/Jackupdrillingrigsnet 51 false false R52.htm 9955524 - Disclosure - Leases (Tables) Sheet http://borrdrilling.com/role/LeasesTables Leases (Tables) Tables http://borrdrilling.com/role/Leases 52 false false R53.htm 9955525 - Disclosure - Other Non-Current Assets (Tables) Sheet http://borrdrilling.com/role/OtherNonCurrentAssetsTables Other Non-Current Assets (Tables) Tables http://borrdrilling.com/role/OtherNonCurrentAssets 53 false false R54.htm 9955526 - Disclosure - Accrued Expenses (Tables) Sheet http://borrdrilling.com/role/AccruedExpensesTables Accrued Expenses (Tables) Tables http://borrdrilling.com/role/AccruedExpenses 54 false false R55.htm 9955527 - Disclosure - Other Current Liabilities (Tables) Sheet http://borrdrilling.com/role/OtherCurrentLiabilitiesTables Other Current Liabilities (Tables) Tables http://borrdrilling.com/role/OtherCurrentLiabilities 55 false false R56.htm 9955528 - Disclosure - Debt (Tables) Sheet http://borrdrilling.com/role/DebtTables Debt (Tables) Tables http://borrdrilling.com/role/Debt 56 false false R57.htm 9955529 - Disclosure - Onerous Contracts (Tables) Sheet http://borrdrilling.com/role/OnerousContractsTables Onerous Contracts (Tables) Tables http://borrdrilling.com/role/OnerousContracts 57 false false R58.htm 9955530 - Disclosure - Commitments and contingencies (Tables) Sheet http://borrdrilling.com/role/CommitmentsandcontingenciesTables Commitments and contingencies (Tables) Tables http://borrdrilling.com/role/Commitmentsandcontingencies 58 false false R59.htm 9955531 - Disclosure - Share based compensation (Tables) Sheet http://borrdrilling.com/role/SharebasedcompensationTables Share based compensation (Tables) Tables http://borrdrilling.com/role/Sharebasedcompensation 59 false false R60.htm 9955532 - Disclosure - Pensions (Tables) Sheet http://borrdrilling.com/role/PensionsTables Pensions (Tables) Tables http://borrdrilling.com/role/Pensions 60 false false R61.htm 9955533 - Disclosure - Financial Instruments (Tables) Sheet http://borrdrilling.com/role/FinancialInstrumentsTables Financial Instruments (Tables) Tables http://borrdrilling.com/role/FinancialInstruments 61 false false R62.htm 9955534 - Disclosure - Related Party Transactions (Tables) Sheet http://borrdrilling.com/role/RelatedPartyTransactionsTables Related Party Transactions (Tables) Tables http://borrdrilling.com/role/RelatedPartyTransactions 62 false false R63.htm 9955535 - Disclosure - Stockholders' Equity (Tables) Sheet http://borrdrilling.com/role/StockholdersEquityTables Stockholders' Equity (Tables) Tables http://borrdrilling.com/role/StockholdersEquity 63 false false R64.htm 9955536 - Disclosure - General (Details) Sheet http://borrdrilling.com/role/GeneralDetails General (Details) Details http://borrdrilling.com/role/General 64 false false R65.htm 9955537 - Disclosure - Basis of Preparation and Accounting Policies (Details) Sheet http://borrdrilling.com/role/BasisofPreparationandAccountingPoliciesDetails Basis of Preparation and Accounting Policies (Details) Details http://borrdrilling.com/role/BasisofPreparationandAccountingPoliciesPolicies 65 false false R66.htm 9955538 - Disclosure - Segments - Narrative (Details) Sheet http://borrdrilling.com/role/SegmentsNarrativeDetails Segments - Narrative (Details) Details 66 false false R67.htm 9955539 - Disclosure - Segments - Revenue by Geographic Areas (Details) Sheet http://borrdrilling.com/role/SegmentsRevenuebyGeographicAreasDetails Segments - Revenue by Geographic Areas (Details) Details 67 false false R68.htm 9955540 - Disclosure - Segments - Long-lived Assets by Geographic Areas (Details) Sheet http://borrdrilling.com/role/SegmentsLonglivedAssetsbyGeographicAreasDetails Segments - Long-lived Assets by Geographic Areas (Details) Details 68 false false R69.htm 9955541 - Disclosure - Segments - Major Customers by Reporting Segments (Details) Sheet http://borrdrilling.com/role/SegmentsMajorCustomersbyReportingSegmentsDetails Segments - Major Customers by Reporting Segments (Details) Details 69 false false R70.htm 9955542 - Disclosure - Contracts with Customers - Contract Assets and Liabilities (Details) Sheet http://borrdrilling.com/role/ContractswithCustomersContractAssetsandLiabilitiesDetails Contracts with Customers - Contract Assets and Liabilities (Details) Details 70 false false R71.htm 9955543 - Disclosure - Contracts with Customers - Significant Changes in Contract Assets and Contract Liabilities (Details) Sheet http://borrdrilling.com/role/ContractswithCustomersSignificantChangesinContractAssetsandContractLiabilitiesDetails Contracts with Customers - Significant Changes in Contract Assets and Contract Liabilities (Details) Details 71 false false R72.htm 9955544 - Disclosure - Contracts with Customers - Disaggregation of Revenue (Details) Sheet http://borrdrilling.com/role/ContractswithCustomersDisaggregationofRevenueDetails Contracts with Customers - Disaggregation of Revenue (Details) Details 72 false false R73.htm 9955545 - Disclosure - Contracts with Customers - Performance Obligation Expected Timing of Satisfaction (Details) Sheet http://borrdrilling.com/role/ContractswithCustomersPerformanceObligationExpectedTimingofSatisfactionDetails Contracts with Customers - Performance Obligation Expected Timing of Satisfaction (Details) Details 73 false false R74.htm 9955546 - Disclosure - Contract with Customers - Contract Cost (Details) Sheet http://borrdrilling.com/role/ContractwithCustomersContractCostDetails Contract with Customers - Contract Cost (Details) Details 74 false false R75.htm 9955547 - Disclosure - Contracts with Customers - Narrative (Details) Sheet http://borrdrilling.com/role/ContractswithCustomersNarrativeDetails Contracts with Customers - Narrative (Details) Details 75 false false R76.htm 9955548 - Disclosure - Gain on Disposals (Details) Sheet http://borrdrilling.com/role/GainonDisposalsDetails Gain on Disposals (Details) Details http://borrdrilling.com/role/GainonDisposalsTables 76 false false R77.htm 9955549 - Disclosure - Equity Method Investments - Narrative (Details) Sheet http://borrdrilling.com/role/EquityMethodInvestmentsNarrativeDetails Equity Method Investments - Narrative (Details) Details 77 false false R78.htm 9955550 - Disclosure - Equity Method Investments - Summarized Statement of Operations (Details) Sheet http://borrdrilling.com/role/EquityMethodInvestmentsSummarizedStatementofOperationsDetails Equity Method Investments - Summarized Statement of Operations (Details) Details 78 false false R79.htm 9955551 - Disclosure - Equity Method Investments - Summarized Balance Sheets (Details) Sheet http://borrdrilling.com/role/EquityMethodInvestmentsSummarizedBalanceSheetsDetails Equity Method Investments - Summarized Balance Sheets (Details) Details 79 false false R80.htm 9955552 - Disclosure - Equity Method Investments - Investments In Equity Method Investments (Details) Sheet http://borrdrilling.com/role/EquityMethodInvestmentsInvestmentsInEquityMethodInvestmentsDetails Equity Method Investments - Investments In Equity Method Investments (Details) Details 80 false false R81.htm 9955553 - Disclosure - Interest expense (Details) Sheet http://borrdrilling.com/role/InterestexpenseDetails Interest expense (Details) Details http://borrdrilling.com/role/InterestexpenseTables 81 false false R82.htm 9955554 - Disclosure - Other Financial Expenses, Net - Other Financial Expenses, Net (Details) Sheet http://borrdrilling.com/role/OtherFinancialExpensesNetOtherFinancialExpensesNetDetails Other Financial Expenses, Net - Other Financial Expenses, Net (Details) Details 82 false false R83.htm 9955555 - Disclosure - Other Financial Expenses, Net - Additional Information (Details) Sheet http://borrdrilling.com/role/OtherFinancialExpensesNetAdditionalInformationDetails Other Financial Expenses, Net - Additional Information (Details) Details 83 false false R84.htm 9955556 - Disclosure - Taxation - Total Pre-Tax Loss (Details) Sheet http://borrdrilling.com/role/TaxationTotalPreTaxLossDetails Taxation - Total Pre-Tax Loss (Details) Details 84 false false R85.htm 9955557 - Disclosure - Taxation - Components of Income Taxes (Details) Sheet http://borrdrilling.com/role/TaxationComponentsofIncomeTaxesDetails Taxation - Components of Income Taxes (Details) Details 85 false false R86.htm 9955558 - Disclosure - Taxation - Narrative (Details) Sheet http://borrdrilling.com/role/TaxationNarrativeDetails Taxation - Narrative (Details) Details 86 false false R87.htm 9955559 - Disclosure - Taxation - Reconciliation of the Bermuda Statutory Tax Rate (Details) Sheet http://borrdrilling.com/role/TaxationReconciliationoftheBermudaStatutoryTaxRateDetails Taxation - Reconciliation of the Bermuda Statutory Tax Rate (Details) Details 87 false false R88.htm 9955560 - Disclosure - Taxation - Deferred Tax Assets and Liabilities (Details) Sheet http://borrdrilling.com/role/TaxationDeferredTaxAssetsandLiabilitiesDetails Taxation - Deferred Tax Assets and Liabilities (Details) Details 88 false false R89.htm 9955561 - Disclosure - Taxation - Unrecognized Tax Benefits (Details) Sheet http://borrdrilling.com/role/TaxationUnrecognizedTaxBenefitsDetails Taxation - Unrecognized Tax Benefits (Details) Details 89 false false R90.htm 9955562 - Disclosure - Earnings per Share - Schedule of Computation of Basic Loss Per Share (EPS) (Details) Sheet http://borrdrilling.com/role/EarningsperShareScheduleofComputationofBasicLossPerShareEPSDetails Earnings per Share - Schedule of Computation of Basic Loss Per Share (EPS) (Details) Details 90 false false R91.htm 9955563 - Disclosure - Earnings per Share - Narrative (Details) Sheet http://borrdrilling.com/role/EarningsperShareNarrativeDetails Earnings per Share - Narrative (Details) Details 91 false false R92.htm 9955564 - Disclosure - Other Current Assets (Details) Sheet http://borrdrilling.com/role/OtherCurrentAssetsDetails Other Current Assets (Details) Details http://borrdrilling.com/role/OtherCurrentAssetsTables 92 false false R93.htm 9955565 - Disclosure - Newbuildings (Details) Sheet http://borrdrilling.com/role/NewbuildingsDetails Newbuildings (Details) Details http://borrdrilling.com/role/NewbuildingsTables 93 false false R94.htm 9955566 - Disclosure - Newbuildings - Narrative (Details) Sheet http://borrdrilling.com/role/NewbuildingsNarrativeDetails Newbuildings - Narrative (Details) Details 94 false false R95.htm 9955567 - Disclosure - Newbuildings - Newbuildings Impairment (Details) Sheet http://borrdrilling.com/role/NewbuildingsNewbuildingsImpairmentDetails Newbuildings - Newbuildings Impairment (Details) Details 95 false false R96.htm 9955568 - Disclosure - Jack-up drilling rigs, net (Details) Sheet http://borrdrilling.com/role/JackupdrillingrigsnetDetails Jack-up drilling rigs, net (Details) Details http://borrdrilling.com/role/JackupdrillingrigsnetTables 96 false false R97.htm 9955569 - Disclosure - Jack-up drilling rigs, net - Narrative (Details) Sheet http://borrdrilling.com/role/JackupdrillingrigsnetNarrativeDetails Jack-up drilling rigs, net - Narrative (Details) Details 97 false false R98.htm 9955570 - Disclosure - Leases - Narrative (Details) Sheet http://borrdrilling.com/role/LeasesNarrativeDetails Leases - Narrative (Details) Details 98 false false R99.htm 9955571 - Disclosure - Leases (Details) Sheet http://borrdrilling.com/role/LeasesDetails Leases (Details) Details http://borrdrilling.com/role/LeasesTables 99 false false R100.htm 9955572 - Disclosure - Leases - Future Minimum Lease Payments Under Non Cancellable Operating Leases (Details) Sheet http://borrdrilling.com/role/LeasesFutureMinimumLeasePaymentsUnderNonCancellableOperatingLeasesDetails Leases - Future Minimum Lease Payments Under Non Cancellable Operating Leases (Details) Details 100 false false R101.htm 9955573 - Disclosure - Leases - Scedule of minimum future revenues to be received (Details) Sheet http://borrdrilling.com/role/LeasesSceduleofminimumfuturerevenuestobereceivedDetails Leases - Scedule of minimum future revenues to be received (Details) Details 101 false false R102.htm 9955574 - Disclosure - Other Non-Current Assets (Details) Sheet http://borrdrilling.com/role/OtherNonCurrentAssetsDetails Other Non-Current Assets (Details) Details http://borrdrilling.com/role/OtherNonCurrentAssetsTables 102 false false R103.htm 9955575 - Disclosure - Accrued Expenses (Details) Sheet http://borrdrilling.com/role/AccruedExpensesDetails Accrued Expenses (Details) Details http://borrdrilling.com/role/AccruedExpensesTables 103 false false R104.htm 9955576 - Disclosure - Other Current Liabilities (Details) Sheet http://borrdrilling.com/role/OtherCurrentLiabilitiesDetails Other Current Liabilities (Details) Details http://borrdrilling.com/role/OtherCurrentLiabilitiesTables 104 false false R105.htm 9955577 - Disclosure - Debt - Short term (Details) Sheet http://borrdrilling.com/role/DebtShorttermDetails Debt - Short term (Details) Details 105 false false R106.htm 9955578 - Disclosure - Debt - Long term (Details) Sheet http://borrdrilling.com/role/DebtLongtermDetails Debt - Long term (Details) Details 106 false false R107.htm 9955579 - Disclosure - Debt - Schedule of Maturities (Details) Sheet http://borrdrilling.com/role/DebtScheduleofMaturitiesDetails Debt - Schedule of Maturities (Details) Details 107 false false R108.htm 9955580 - Disclosure - Debt - Our Long Term Debt (Details) Sheet http://borrdrilling.com/role/DebtOurLongTermDebtDetails Debt - Our Long Term Debt (Details) Details 108 false false R109.htm 9955581 - Disclosure - Debt - Senior Secured Notes (Details) Notes http://borrdrilling.com/role/DebtSeniorSecuredNotesDetails Debt - Senior Secured Notes (Details) Details 109 false false R110.htm 9955582 - Disclosure - Debt - Super Senior Revolving Credit Facility (Details) Sheet http://borrdrilling.com/role/DebtSuperSeniorRevolvingCreditFacilityDetails Debt - Super Senior Revolving Credit Facility (Details) Details 110 false false R111.htm 9955583 - Disclosure - Debt - Unsecured Convertible Bonds (Details) Sheet http://borrdrilling.com/role/DebtUnsecuredConvertibleBondsDetails Debt - Unsecured Convertible Bonds (Details) Details 111 false false R112.htm 9955584 - Disclosure - Onerous Contracts (Details) Sheet http://borrdrilling.com/role/OnerousContractsDetails Onerous Contracts (Details) Details http://borrdrilling.com/role/OnerousContractsTables 112 false false R113.htm 9955586 - Disclosure - Commitments and contingencies - Narrative (Details) Sheet http://borrdrilling.com/role/CommitmentsandcontingenciesNarrativeDetails Commitments and contingencies - Narrative (Details) Details 113 false false R114.htm 9955587 - Disclosure - Commitments and contingencies (Details) - Commitments Sheet http://borrdrilling.com/role/CommitmentsandcontingenciesDetailsCommitments Commitments and contingencies (Details) - Commitments Details http://borrdrilling.com/role/CommitmentsandcontingenciesTables 114 false false R115.htm 9955588 - Disclosure - Commitments and contingencies (Details) - Other Commercial Commitments Sheet http://borrdrilling.com/role/CommitmentsandcontingenciesDetailsOtherCommercialCommitments Commitments and contingencies (Details) - Other Commercial Commitments Details http://borrdrilling.com/role/CommitmentsandcontingenciesTables 115 false false R116.htm 9955589 - Disclosure - Commitments and contingencies (Details) - Other Commercial Commitments Maturity Sheet http://borrdrilling.com/role/CommitmentsandcontingenciesDetailsOtherCommercialCommitmentsMaturity Commitments and contingencies (Details) - Other Commercial Commitments Maturity Details http://borrdrilling.com/role/CommitmentsandcontingenciesTables 116 false false R117.htm 9955590 - Disclosure - Commitments and contingencies (Details) - Assets Pledged as Collateral Sheet http://borrdrilling.com/role/CommitmentsandcontingenciesDetailsAssetsPledgedasCollateral Commitments and contingencies (Details) - Assets Pledged as Collateral Details http://borrdrilling.com/role/CommitmentsandcontingenciesTables 117 false false R118.htm 9955591 - Disclosure - Share based compensation - Narrative (Details) Sheet http://borrdrilling.com/role/SharebasedcompensationNarrativeDetails Share based compensation - Narrative (Details) Details 118 false false R119.htm 9955592 - Disclosure - Share based compensation - Share-based Payment Charges (Details) Sheet http://borrdrilling.com/role/SharebasedcompensationSharebasedPaymentChargesDetails Share based compensation - Share-based Payment Charges (Details) Details 119 false false R120.htm 9955593 - Disclosure - Share based compensation - Share Options Issued (Details) Sheet http://borrdrilling.com/role/SharebasedcompensationShareOptionsIssuedDetails Share based compensation - Share Options Issued (Details) Details 120 false false R121.htm 9955594 - Disclosure - Share based compensation - Share Options Activity (Details) Sheet http://borrdrilling.com/role/SharebasedcompensationShareOptionsActivityDetails Share based compensation - Share Options Activity (Details) Details 121 false false R122.htm 9955595 - Disclosure - Share based compensation - Fair Value of Equity Settled Options (Details) Sheet http://borrdrilling.com/role/SharebasedcompensationFairValueofEquitySettledOptionsDetails Share based compensation - Fair Value of Equity Settled Options (Details) Details 122 false false R123.htm 9955596 - Disclosure - Share based compensation - Non Vested PSU And RSU Activity (Details) Sheet http://borrdrilling.com/role/SharebasedcompensationNonVestedPSUAndRSUActivityDetails Share based compensation - Non Vested PSU And RSU Activity (Details) Details 123 false false R124.htm 9955597 - Disclosure - Pensions (Details) - Narrative Sheet http://borrdrilling.com/role/PensionsDetailsNarrative Pensions (Details) - Narrative Details http://borrdrilling.com/role/PensionsTables 124 false false R125.htm 9955598 - Disclosure - Pensions (Details) - Defined Benefit Plan Reconciliations Sheet http://borrdrilling.com/role/PensionsDetailsDefinedBenefitPlanReconciliations Pensions (Details) - Defined Benefit Plan Reconciliations Details http://borrdrilling.com/role/PensionsTables 125 false false R126.htm 9955599 - Disclosure - Pensions (Details) - Defined Benefit Plan Costs and Key Assumptions Sheet http://borrdrilling.com/role/PensionsDetailsDefinedBenefitPlanCostsandKeyAssumptions Pensions (Details) - Defined Benefit Plan Costs and Key Assumptions Details http://borrdrilling.com/role/PensionsTables 126 false false R127.htm 9955600 - Disclosure - Pensions (Details) - Defined Benefit Plans Cash Flows Sheet http://borrdrilling.com/role/PensionsDetailsDefinedBenefitPlansCashFlows Pensions (Details) - Defined Benefit Plans Cash Flows Details http://borrdrilling.com/role/PensionsTables 127 false false R128.htm 9955601 - Disclosure - Financial Instruments (Details) Sheet http://borrdrilling.com/role/FinancialInstrumentsDetails Financial Instruments (Details) Details http://borrdrilling.com/role/FinancialInstrumentsTables 128 false false R129.htm 9955602 - Disclosure - Financial Instruments - Narrative (Details) Sheet http://borrdrilling.com/role/FinancialInstrumentsNarrativeDetails Financial Instruments - Narrative (Details) Details 129 false false R130.htm 9955603 - Disclosure - Related Party Transactions - Narrative (Details) Sheet http://borrdrilling.com/role/RelatedPartyTransactionsNarrativeDetails Related Party Transactions - Narrative (Details) Details 130 false false R131.htm 9955604 - Disclosure - Related Party Transactions - Transactions with Significant Influence Entities (Details) Sheet http://borrdrilling.com/role/RelatedPartyTransactionsTransactionswithSignificantInfluenceEntitiesDetails Related Party Transactions - Transactions with Significant Influence Entities (Details) Details 131 false false R132.htm 9955605 - Disclosure - Related Party Transactions - Transactions with Other Related Parties (Details) Sheet http://borrdrilling.com/role/RelatedPartyTransactionsTransactionswithOtherRelatedPartiesDetails Related Party Transactions - Transactions with Other Related Parties (Details) Details 132 false false R133.htm 9955606 - Disclosure - Stockholders' Equity (Details) - Authorized And Issued Share Capital Sheet http://borrdrilling.com/role/StockholdersEquityDetailsAuthorizedAndIssuedShareCapital Stockholders' Equity (Details) - Authorized And Issued Share Capital Details http://borrdrilling.com/role/StockholdersEquityTables 133 false false R134.htm 9955607 - Disclosure - Stockholders' Equity (Details) - Shares Issued Sheet http://borrdrilling.com/role/StockholdersEquityDetailsSharesIssued Stockholders' Equity (Details) - Shares Issued Details http://borrdrilling.com/role/StockholdersEquityTables 134 false false R135.htm 9955608 - Disclosure - Stockholders' Equity (Details) - Treasury Share Issuance Sheet http://borrdrilling.com/role/StockholdersEquityDetailsTreasuryShareIssuance Stockholders' Equity (Details) - Treasury Share Issuance Details http://borrdrilling.com/role/StockholdersEquityTables 135 false false R136.htm 9955609 - Disclosure - Stockholders' Equity - Narrative (Details) Sheet http://borrdrilling.com/role/StockholdersEquityNarrativeDetails Stockholders' Equity - Narrative (Details) Details 136 false false R137.htm 9955610 - Disclosure - Stockholders' Equity -Cash Distributions (Details) Sheet http://borrdrilling.com/role/StockholdersEquityCashDistributionsDetails Stockholders' Equity -Cash Distributions (Details) Details 137 false false R138.htm 9955611 - Disclosure - Subsequent Events (Details) Sheet http://borrdrilling.com/role/SubsequentEventsDetails Subsequent Events (Details) Details http://borrdrilling.com/role/SubsequentEvents 138 false false All Reports Book All Reports borr-20241231.htm borr-20241231.xsd borr-20241231_cal.xml borr-20241231_def.xml borr-20241231_lab.xml borr-20241231_pre.xml borr-20241231_g1.jpg http://fasb.org/srt/2024 http://fasb.org/us-gaap/2024 http://xbrl.sec.gov/cyd/2024 http://xbrl.sec.gov/dei/2024 http://xbrl.sec.gov/ecd/2024 true true