Nature of Operations (Details) $ in Millions	9 Months Ended
	Jun. 30, 2016 USD ($) county	Jun. 30, 2015 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General Partner held a general partner interest in AmeriGas Partners	1.00%
Percentage of 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%
General Partner incentive distribution | $	$ 27.7	$ 21.7
Number of counties of operation | county	1