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Nature of Operations (Details)
 12 Months Ended
Sep. 30, 2016
county
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
General Partner held a general partner interest in AmeriGas Partners 1.00%
Percentage of our limited partnership interest in AmeriGas Partners 25.30%
Effective Ownership interest in AmeriGas OLP 27.10%
General public as limited partner interests in AmeriGas Partners 73.70%
Number of counties of operation 1