Nature of Operations (Details Textual)	3 Months Ended
	Dec. 31, 2012 States Employee
Nature of Operations (Textual) [Abstract]
Common Units held by ETP	29,567,362
Nature of Operations (Additional Textual) [Abstract]
Number of states in which the company has market share (in states)	50
Common units held by the general partner and its wholly owned subsidiary Petrolane Incorporated	23,756,882
Common Units held by public	39,488,173
Limited partner interest held by AmeriGas Partners in AmeriGas OLP (as a percent)	98.99%
Employees of the AmeriGas Partners and the Operating Partnerships (in employees)	0
AmeriGas Propane Inc Partnership Interest In AmeriGas Partners [Member]
Nature of Operations (Textual) [Abstract]
General Partners Ownership Interest (as a percent)	1.00%
AmeriGas Propane Inc Partnership Interest In AmeriGas OLP [Member]
Nature of Operations (Textual) [Abstract]
General Partners Ownership Interest (as a percent)	1.01%