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Segment Information (Details Textual) | 3 Months Ended
--- | ---
Dec. 31, 2012 Reportable_Segments
Segment Reporting Information [Line Items] |
Number of reportable segments (in reportable segments) | 6
Segment Information (Textual) [Abstract] |
General Partner's interest in AmeriGas OLP (as a percent) | 1.01%

X
- Definition Limited liability company or limited partnership managing member or general partner ownership interest percentage. + References No definition available. + Details
Name: | ugi_LimitedLiabilityCompanyOrLimitedPartnershipManagingMemberOrGeneralPartnerOwnershipInterestPercentage
Namespace Prefix: | ugi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ugi_SegmentInformationTextualAbstract
Namespace Prefix: | ugi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration