3.26.1 html 220 209 1 false 55 0 false 6 false false R1.htm 00090 - Document - Document and Entity Information Sheet http://www.bwlpg.com/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 00100 - Statement - CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME Sheet http://www.bwlpg.com/role/StatementCondensedConsolidatedStatementOfComprehensiveIncome CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME Statements 2 false false R3.htm 00200 - Statement - CONDENSED CONSOLIDATED BALANCE SHEET Sheet http://www.bwlpg.com/role/StatementCondensedConsolidatedBalanceSheet CONDENSED CONSOLIDATED BALANCE SHEET Statements 3 false false R4.htm 00300 - Statement - CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Sheet http://www.bwlpg.com/role/StatementCondensedConsolidatedStatementOfChangesInEquity CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Statements 4 false false R5.htm 00400 - Statement - CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS Sheet http://www.bwlpg.com/role/StatementCondensedConsolidatedStatementOfCashFlows CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS Statements 5 false false R6.htm 00405 - Statement - CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Parentheticals) Sheet http://www.bwlpg.com/role/StatementCondensedConsolidatedStatementOfCashFlowsParentheticals CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Parentheticals) Statements 6 false false R7.htm 10101 - Disclosure - General information Sheet http://www.bwlpg.com/role/DisclosureGeneralInformation General information Notes 7 false false R8.htm 10201 - Disclosure - Material accounting policies Sheet http://www.bwlpg.com/role/DisclosureMaterialAccountingPolicies Material accounting policies Notes 8 false false R9.htm 10301 - Disclosure - Derivative financial instruments Sheet http://www.bwlpg.com/role/DisclosureDerivativeFinancialInstruments Derivative financial instruments Notes 9 false false R10.htm 10401 - Disclosure - Property, plant and equipment Sheet http://www.bwlpg.com/role/DisclosurePropertyPlantAndEquipment Property, plant and equipment Notes 10 false false R11.htm 10501 - Disclosure - Treasury shares Sheet http://www.bwlpg.com/role/DisclosureTreasuryShares Treasury shares Notes 11 false false R12.htm 10601 - Disclosure - Borrowings and lease liabilities Sheet http://www.bwlpg.com/role/DisclosureBorrowingsAndLeaseLiabilities Borrowings and lease liabilities Notes 12 false false R13.htm 10701 - Disclosure - Related party transactions Sheet http://www.bwlpg.com/role/DisclosureRelatedPartyTransactions Related party transactions Notes 13 false false R14.htm 10801 - Disclosure - Financial risk management Sheet http://www.bwlpg.com/role/DisclosureFinancialRiskManagement Financial risk management Notes 14 false false R15.htm 10901 - Disclosure - Segment information Sheet http://www.bwlpg.com/role/DisclosureSegmentInformation Segment information Notes 15 false false R16.htm 11001 - Disclosure - Investment in subsidiaries Sheet http://www.bwlpg.com/role/DisclosureInvestmentInSubsidiaries Investment in subsidiaries Notes 16 false false R17.htm 11101 - Disclosure - Dividends paid Sheet http://www.bwlpg.com/role/DisclosureDividendsPaid Dividends paid Notes 17 false false R18.htm 11201 - Disclosure - Subsequent events Sheet http://www.bwlpg.com/role/DisclosureSubsequentEvents Subsequent events Notes 18 false false R19.htm 20202 - Disclosure - Material accounting policies (Policies) Sheet http://www.bwlpg.com/role/DisclosureMaterialAccountingPoliciesPolicies Material accounting policies (Policies) Policies 19 false false R20.htm 30303 - Disclosure - Derivative financial instruments (Tables) Sheet http://www.bwlpg.com/role/DisclosureDerivativeFinancialInstrumentsTables Derivative financial instruments (Tables) Tables http://www.bwlpg.com/role/DisclosureDerivativeFinancialInstruments 20 false false R21.htm 30403 - Disclosure - Property, plant and equipment (Tables) Sheet http://www.bwlpg.com/role/DisclosurePropertyPlantAndEquipmentTables Property, plant and equipment (Tables) Tables http://www.bwlpg.com/role/DisclosurePropertyPlantAndEquipment 21 false false R22.htm 30503 - Disclosure - Treasury shares (Tables) Sheet http://www.bwlpg.com/role/DisclosureTreasurySharesTables Treasury shares (Tables) Tables http://www.bwlpg.com/role/DisclosureTreasuryShares 22 false false R23.htm 30603 - Disclosure - Borrowings and lease liabilities (Tables) Sheet http://www.bwlpg.com/role/DisclosureBorrowingsAndLeaseLiabilitiesTables Borrowings and lease liabilities (Tables) Tables http://www.bwlpg.com/role/DisclosureBorrowingsAndLeaseLiabilities 23 false false R24.htm 30703 - Disclosure - Related party transactions (Tables) Sheet http://www.bwlpg.com/role/DisclosureRelatedPartyTransactionsTables Related party transactions (Tables) Tables http://www.bwlpg.com/role/DisclosureRelatedPartyTransactions 24 false false R25.htm 30803 - Disclosure - Financial risk management (Tables) Sheet http://www.bwlpg.com/role/DisclosureFinancialRiskManagementTables Financial risk management (Tables) Tables http://www.bwlpg.com/role/DisclosureFinancialRiskManagement 25 false false R26.htm 30903 - Disclosure - Segment information (Tables) Sheet http://www.bwlpg.com/role/DisclosureSegmentInformationTables Segment information (Tables) Tables http://www.bwlpg.com/role/DisclosureSegmentInformation 26 false false R27.htm 31003 - Disclosure - Investment in subsidiaries (Tables) Sheet http://www.bwlpg.com/role/DisclosureInvestmentInSubsidiariesTables Investment in subsidiaries (Tables) Tables http://www.bwlpg.com/role/DisclosureInvestmentInSubsidiaries 27 false false R28.htm 40301 - Disclosure - Derivative financial instruments (Details) Sheet http://www.bwlpg.com/role/DisclosureDerivativeFinancialInstrumentsDetails Derivative financial instruments (Details) Details http://www.bwlpg.com/role/DisclosureDerivativeFinancialInstrumentsTables 28 false false R29.htm 40401 - Disclosure - Property, plant and equipment (Details) Sheet http://www.bwlpg.com/role/DisclosurePropertyPlantAndEquipmentDetails Property, plant and equipment (Details) Details http://www.bwlpg.com/role/DisclosurePropertyPlantAndEquipmentTables 29 false false R30.htm 40501 - Disclosure - Treasury shares (Details) Sheet http://www.bwlpg.com/role/DisclosureTreasurySharesDetails Treasury shares (Details) Details http://www.bwlpg.com/role/DisclosureTreasurySharesTables 30 false false R31.htm 40502 - Disclosure - Treasury shares - Narratives (Details) Sheet http://www.bwlpg.com/role/DisclosureTreasurySharesNarrativesDetails Treasury shares - Narratives (Details) Details 31 false false R32.htm 40601 - Disclosure - Borrowings and lease liabilities (Details) Sheet http://www.bwlpg.com/role/DisclosureBorrowingsAndLeaseLiabilitiesDetails Borrowings and lease liabilities (Details) Details http://www.bwlpg.com/role/DisclosureBorrowingsAndLeaseLiabilitiesTables 32 false false R33.htm 40602 - Disclosure - Borrowings and lease liabilities - Movements in borrowings and lease liabilities (Details) Sheet http://www.bwlpg.com/role/DisclosureBorrowingsAndLeaseLiabilitiesMovementsInBorrowingsAndLeaseLiabilitiesDetails Borrowings and lease liabilities - Movements in borrowings and lease liabilities (Details) Details 33 false false R34.htm 40701 - Disclosure - Related party transactions - Services (Details) Sheet http://www.bwlpg.com/role/DisclosureRelatedPartyTransactionsServicesDetails Related party transactions - Services (Details) Details 34 false false R35.htm 40702 - Disclosure - Related party transactions - Key management's remuneration (Details) Sheet http://www.bwlpg.com/role/DisclosureRelatedPartyTransactionsKeyManagementSRemunerationDetails Related party transactions - Key management's remuneration (Details) Details 35 false false R36.htm 40801 - Disclosure - Financial risk management - Financial instruments by category (Details) Sheet http://www.bwlpg.com/role/DisclosureFinancialRiskManagementFinancialInstrumentsByCategoryDetails Financial risk management - Financial instruments by category (Details) Details 36 false false R37.htm 40802 - Disclosure - Financial risk management - Estimation of fair value (Details) Sheet http://www.bwlpg.com/role/DisclosureFinancialRiskManagementEstimationOfFairValueDetails Financial risk management - Estimation of fair value (Details) Details 37 false false R38.htm 40901 - Disclosure - Segment information - Segment performance (Details) Sheet http://www.bwlpg.com/role/DisclosureSegmentInformationSegmentPerformanceDetails Segment information - Segment performance (Details) Details 38 false false R39.htm 40902 - Disclosure - Segment information - Reconciliation of segment results (Details) Sheet http://www.bwlpg.com/role/DisclosureSegmentInformationReconciliationOfSegmentResultsDetails Segment information - Reconciliation of segment results (Details) Details 39 false false R40.htm 41001 - Disclosure - Investment in subsidiaries - Summarised balance sheet (Details) Sheet http://www.bwlpg.com/role/DisclosureInvestmentInSubsidiariesSummarisedBalanceSheetDetails Investment in subsidiaries - Summarised balance sheet (Details) Details 40 false false R41.htm 41002 - Disclosure - Investment in subsidiaries - Summarised statement of comprehensive income (Details) Sheet http://www.bwlpg.com/role/DisclosureInvestmentInSubsidiariesSummarisedStatementOfComprehensiveIncomeDetails Investment in subsidiaries - Summarised statement of comprehensive income (Details) Details 41 false false R42.htm 41101 - Disclosure - Dividends paid (Details) Sheet http://www.bwlpg.com/role/DisclosureDividendsPaidDetails Dividends paid (Details) Details http://www.bwlpg.com/role/DisclosureDividendsPaid 42 false false R43.htm 41201 - Disclosure - Subsequent events (Details) Sheet http://www.bwlpg.com/role/DisclosureSubsequentEventsDetails Subsequent events (Details) Details http://www.bwlpg.com/role/DisclosureSubsequentEvents 43 false false All Reports Book All Reports bwlp-20260630.xsd bwlp-20260630_cal.xml bwlp-20260630_def.xml bwlp-20260630_lab.xml bwlp-20260630_pre.xml bwlp-20260630xex99d2.htm bwlp-20260630xex99d2001.jpg http://fasb.org/srt/2025 http://xbrl.sec.gov/dei/2025 https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full true true