Segment Information (Details Textual)	12 Months Ended
Sep. 30, 2012 States Reportable_Segments
Segment Reporting [Abstract]
Number of Reportable Segments	6
Number of states to which product sale with propane revenue	50
General Partner's interest in AmeriGas OLP	1.01%

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.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration