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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Dec. 31, 2014 lb competitors lawsuit | Dec. 31, 2013
Commitments and Contingencies |  |
Amount of propane in cylinders before reduction | 17 ugi_AmountOfPropaneInCylindersBeforeReduction |
Amount of propane in cylinders after reduction | 15 ugi_AmountOfPropaneInCylindersAfterReduction |
Number of competitors who alleged to have colluded with the Partnership | 1 ugi_LossContingencyNumberofCompetitorsAllegedtohaveColludedwiththePartnership |
Class action lawsuits (more than 35) | 35 ugi_LossContingencyClassActionLawsuit |
PNG MGP |  |
Commitments and Contingencies |  |
Loss contingency, settlement agreement, terms | 2 years |
Environmental Matters | CPG MGP |  |
Commitments and Contingencies |  |
Environmental expenditures cap during calendar year | 1.8 ugi_EnvironmentalExpendituresCapDuringCalendarYear / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_EnvironmentalIssueMember / us-gaap_StatementBusinessSegmentsAxis = ugi_CpgMgpMember |
Environmental Matters | PNG MGP |  |
Commitments and Contingencies |  |
Environmental expenditures cap during calendar year | 1.1 ugi_EnvironmentalExpendituresCapDuringCalendarYear / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_EnvironmentalIssueMember / us-gaap_StatementBusinessSegmentsAxis = ugi_PngMgpMember |
Environmental Matters | UGI Utilities |  |
Commitments and Contingencies |  |
Base year for determination of investigation and remediation cost (in years) | 5 years |
CPG and PNG COAs | UGI Utilities |  |
Commitments and Contingencies |  |
Accrual for environmental loss contingencies | 11.2 us-gaap_AccrualForEnvironmentalLossContingencies / dei_LegalEntityAxis = ugi_UgiUtilitiesMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = ugi_CpgAndPngCoasMember | $ 12.1 us-gaap_AccrualForEnvironmentalLossContingencies / dei_LegalEntityAxis = ugi_UgiUtilitiesMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = ugi_CpgAndPngCoasMember

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- Definition Loss Contingency Number of Competitors Alleged to have Colluded with the Partnership + References No definition available. + Details
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