3.5.0.2 html 213 189 1 true 62 0 false 11 false false R1.htm 0001000 - Document - Document and Entity Information Sheet http://www.ugi.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 1001000 - Statement - Condensed Consolidated Balance Sheets (unaudited) Sheet http://www.ugi.com/role/CondensedConsolidatedBalanceSheetsUnaudited Condensed Consolidated Balance Sheets (unaudited) Statements 2 false false R3.htm 1001501 - Statement - Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) Sheet http://www.ugi.com/role/CondensedConsolidatedBalanceSheetsUnauditedParenthetical Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) Statements 3 false false R4.htm 1002000 - Statement - Condensed Consolidated Statements of Income (unaudited) Sheet http://www.ugi.com/role/CondensedConsolidatedStatementsOfIncomeUnaudited Condensed Consolidated Statements of Income (unaudited) Statements 4 false false R5.htm 1003000 - Statement - Condensed Consolidated Statements of Comprehensive Income (unaudited) Sheet http://www.ugi.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited Condensed Consolidated Statements of Comprehensive Income (unaudited) Statements 5 false false R6.htm 1003501 - Statement - Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) Sheet http://www.ugi.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) Statements 6 false false R7.htm 1004000 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited) Sheet http://www.ugi.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited Condensed Consolidated Statements of Cash Flows (unaudited) Statements 7 false false R8.htm 2101100 - Disclosure - Nature of Operations Sheet http://www.ugi.com/role/NatureOfOperations Nature of Operations Notes 8 false false R9.htm 2102100 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.ugi.com/role/SummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 9 false false R10.htm 2103100 - Disclosure - Accounting Changes Sheet http://www.ugi.com/role/AccountingChanges Accounting Changes Notes 10 false false R11.htm 2104100 - Disclosure - Inventories Sheet http://www.ugi.com/role/Inventories Inventories Notes 11 false false R12.htm 2105100 - Disclosure - Regulatory Assets and Liabilities and Regulatory Matters Sheet http://www.ugi.com/role/RegulatoryAssetsAndLiabilitiesAndRegulatoryMatters Regulatory Assets and Liabilities and Regulatory Matters Notes 12 false false R13.htm 2107100 - Disclosure - Debt Sheet http://www.ugi.com/role/Debt Debt Notes 13 false false R14.htm 2109100 - Disclosure - Commitments and Contingencies Sheet http://www.ugi.com/role/CommitmentsAndContingencies Commitments and Contingencies Notes 14 false false R15.htm 2110100 - Disclosure - Defined Benefit Pension and Other Postretirement Plans Sheet http://www.ugi.com/role/DefinedBenefitPensionAndOtherPostretirementPlans Defined Benefit Pension and Other Postretirement Plans Notes 15 false false R16.htm 2111100 - Disclosure - Fair Value Measurements Sheet http://www.ugi.com/role/FairValueMeasurements Fair Value Measurements Notes 16 false false R17.htm 2112100 - Disclosure - Derivative Instruments and Hedging Activities Sheet http://www.ugi.com/role/DerivativeInstrumentsAndHedgingActivities Derivative Instruments and Hedging Activities Notes 17 false false R18.htm 2113100 - Disclosure - Accumulated Other Comprehensive Income Sheet http://www.ugi.com/role/AccumulatedOtherComprehensiveIncome Accumulated Other Comprehensive Income Notes 18 false false R19.htm 2114100 - Disclosure - Related Party Transactions Sheet http://www.ugi.com/role/RelatedPartyTransactions Related Party Transactions Notes 19 false false R20.htm 2115100 - Disclosure - Segment Information Sheet http://www.ugi.com/role/SegmentInformation Segment Information Notes 20 false false R21.htm 2202201 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.ugi.com/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.ugi.com/role/SummaryOfSignificantAccountingPolicies 21 false false R22.htm 2304301 - Disclosure - Inventories (Tables) Sheet http://www.ugi.com/role/InventoriesTables Inventories (Tables) Tables http://www.ugi.com/role/Inventories 22 false false R23.htm 2305301 - Disclosure - Regulatory Assets and Liabilities and Regulatory Matters (Tables) Sheet http://www.ugi.com/role/RegulatoryAssetsAndLiabilitiesAndRegulatoryMattersTables Regulatory Assets and Liabilities and Regulatory Matters (Tables) Tables http://www.ugi.com/role/RegulatoryAssetsAndLiabilitiesAndRegulatoryMatters 23 false false R24.htm 2310301 - Disclosure - Defined Benefit Pension and Other Postretirement Plans (Tables) Sheet http://www.ugi.com/role/DefinedBenefitPensionAndOtherPostretirementPlansTables Defined Benefit Pension and Other Postretirement Plans (Tables) Tables http://www.ugi.com/role/DefinedBenefitPensionAndOtherPostretirementPlans 24 false false R25.htm 2311301 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.ugi.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.ugi.com/role/FairValueMeasurements 25 false false R26.htm 2312301 - Disclosure - Derivative Instruments and Hedging Activities (Tables) Sheet http://www.ugi.com/role/DerivativeInstrumentsAndHedgingActivitiesTables Derivative Instruments and Hedging Activities (Tables) Tables http://www.ugi.com/role/DerivativeInstrumentsAndHedgingActivities 26 false false R27.htm 2313301 - Disclosure - Accumulated Other Comprehensive Income (Tables) Sheet http://www.ugi.com/role/AccumulatedOtherComprehensiveIncomeTables Accumulated Other Comprehensive Income (Tables) Tables http://www.ugi.com/role/AccumulatedOtherComprehensiveIncome 27 false false R28.htm 2315301 - Disclosure - Segment Information (Tables) Sheet http://www.ugi.com/role/SegmentInformationTables Segment Information (Tables) Tables http://www.ugi.com/role/SegmentInformation 28 false false R29.htm 2401401 - Disclosure - Nature of Operations (Details) Sheet http://www.ugi.com/role/NatureOfOperationsDetails Nature of Operations (Details) Details http://www.ugi.com/role/NatureOfOperations 29 false false R30.htm 2404402 - Disclosure - Inventories - Schedule of Inventories (Details) Sheet http://www.ugi.com/role/InventoriesScheduleOfInventoriesDetails Inventories - Schedule of Inventories (Details) Details 30 false false R31.htm 2404403 - Disclosure - Inventories (Details) Sheet http://www.ugi.com/role/InventoriesDetails Inventories (Details) Details http://www.ugi.com/role/InventoriesTables 31 false false R32.htm 2405402 - Disclosure - Regulatory Assets and Liabilities and Regulatory Matters - Schedule of Regulatory Assets and Liabilities Associated With Gas Utility and Electric Utility (Details) Sheet http://www.ugi.com/role/RegulatoryAssetsAndLiabilitiesAndRegulatoryMattersScheduleOfRegulatoryAssetsAndLiabilitiesAssociatedWithGasUtilityAndElectricUtilityDetails Regulatory Assets and Liabilities and Regulatory Matters - Schedule of Regulatory Assets and Liabilities Associated With Gas Utility and Electric Utility (Details) Details 32 false false R33.htm 2405403 - Disclosure - Regulatory Assets and Liabilities and Regulatory Matters (Details) Sheet http://www.ugi.com/role/RegulatoryAssetsAndLiabilitiesAndRegulatoryMattersDetails Regulatory Assets and Liabilities and Regulatory Matters (Details) Details http://www.ugi.com/role/RegulatoryAssetsAndLiabilitiesAndRegulatoryMattersTables 33 false false R34.htm 2407401 - Disclosure - Debt (Details) Sheet http://www.ugi.com/role/DebtDetails Debt (Details) Details http://www.ugi.com/role/Debt 34 false false R35.htm 2409401 - Disclosure - Commitments and Contingencies (Details) Sheet http://www.ugi.com/role/CommitmentsAndContingenciesDetails Commitments and Contingencies (Details) Details http://www.ugi.com/role/CommitmentsAndContingencies 35 false false R36.htm 2410402 - Disclosure - Defined Benefit Pension and Other Postretirement Plans - Schedule of Components of Net Periodic Pension Expense and Other Postretirement Benefit Costs (Details) Sheet http://www.ugi.com/role/DefinedBenefitPensionAndOtherPostretirementPlansScheduleOfComponentsOfNetPeriodicPensionExpenseAndOtherPostretirementBenefitCostsDetails Defined Benefit Pension and Other Postretirement Plans - Schedule of Components of Net Periodic Pension Expense and Other Postretirement Benefit Costs (Details) Details 36 false false R37.htm 2410403 - Disclosure - Defined Benefit Pension and Other Postretirement Plans (Details) Sheet http://www.ugi.com/role/DefinedBenefitPensionAndOtherPostretirementPlansDetails Defined Benefit Pension and Other Postretirement Plans (Details) Details http://www.ugi.com/role/DefinedBenefitPensionAndOtherPostretirementPlansTables 37 false false R38.htm 2411402 - Disclosure - Fair Value Measurements - Financial Assets and Financial Liabilities That are Measured at Fair Value on a Recurring Basis (Details) Sheet http://www.ugi.com/role/FairValueMeasurementsFinancialAssetsAndFinancialLiabilitiesThatAreMeasuredAtFairValueOnRecurringBasisDetails Fair Value Measurements - Financial Assets and Financial Liabilities That are Measured at Fair Value on a Recurring Basis (Details) Details 38 false false R39.htm 2411403 - Disclosure - Fair Value Measurements (Details) Sheet http://www.ugi.com/role/FairValueMeasurementsDetails Fair Value Measurements (Details) Details http://www.ugi.com/role/FairValueMeasurementsTables 39 false false R40.htm 2412402 - Disclosure - Derivative Instruments and Hedging Activities (Details) Sheet http://www.ugi.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails Derivative Instruments and Hedging Activities (Details) Details http://www.ugi.com/role/DerivativeInstrumentsAndHedgingActivitiesTables 40 false false R41.htm 2412403 - Disclosure - Derivative Instruments and Hedging Activities - Balance Sheet Location and Fair Value of Derivative Assets and Liabilities (Details) Sheet http://www.ugi.com/role/DerivativeInstrumentsAndHedgingActivitiesBalanceSheetLocationAndFairValueOfDerivativeAssetsAndLiabilitiesDetails Derivative Instruments and Hedging Activities - Balance Sheet Location and Fair Value of Derivative Assets and Liabilities (Details) Details 41 false false R42.htm 2412404 - Disclosure - Derivative Instruments and Hedging Activities - Effects of Derivatives on Statements of Income and AOCI (Details) Sheet http://www.ugi.com/role/DerivativeInstrumentsAndHedgingActivitiesEffectsOfDerivativesOnStatementsOfIncomeAndAociDetails Derivative Instruments and Hedging Activities - Effects of Derivatives on Statements of Income and AOCI (Details) Details 42 false false R43.htm 2413402 - Disclosure - Accumulated Other Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Income (Details) Sheet http://www.ugi.com/role/AccumulatedOtherComprehensiveIncomeScheduleOfChangesInAccumulatedOtherComprehensiveIncomeDetails Accumulated Other Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Income (Details) Details 43 false false R44.htm 2414401 - Disclosure - Related Party Transactions (Details) Sheet http://www.ugi.com/role/RelatedPartyTransactionsDetails Related Party Transactions (Details) Details http://www.ugi.com/role/RelatedPartyTransactions 44 false false R45.htm 2415402 - Disclosure - Segment Information (Details) Sheet http://www.ugi.com/role/SegmentInformationDetails Segment Information (Details) Details http://www.ugi.com/role/SegmentInformationTables 45 false false R46.htm 2415403 - Disclosure - Segment Information - Schedule of Segment Information (Details) Sheet http://www.ugi.com/role/SegmentInformationScheduleOfSegmentInformationDetails Segment Information - Schedule of Segment Information (Details) Details 46 false false All Reports Book All Reports ugu-20160630.xml ugu-20160630.xsd ugu-20160630_cal.xml ugu-20160630_def.xml ugu-20160630_lab.xml ugu-20160630_pre.xml true true