Significant Accounting Policies (Details Textual) (USD $)	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Significant Accounting Policies (Textual) [Abstract]
Theoretical distributions of net income on earnings (in dollars per unit)	$ 0.06	$ 0.16
AmeriGas Propane Inc Partnership Interest in AmeriGas OLP [Member]
General Partner Interest [Line Items]
General Partners Ownership Interest (as a percent)	1.01%
AmeriGas Propane Inc Partnership Interest In AmeriGas Partners [Member]
General Partner Interest [Line Items]
General Partner Interest Percentage	1.00%
General Partners Ownership Interest (as a percent)	1.00%
AmeriGas Finance Corp., AP Eagle Finance Corp. and AmeriGas Finance LLC [Member]
Significant Accounting Policies (Textual) [Abstract]
Ownership Percentage of Finance Subsidiaries	100.00%