Segment Information (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2011
Reconciliation of partnership EBITDA
Depreciation and amortization									$ (363.1)		$ (315.0)		$ (227.7)
Loss on extinguishments of debt					0	(0.1)	13.4	0			13.3		38.1
Operating income	(12.3)	41.5	507.7	294.2	(15.0)	3.2	385.0	165.4	831.1		538.6		642.4
AmeriGas Propane [Member]
Reconciliation of partnership EBITDA
Partnership EBITDA									596.5	[1]	322.1	[1]	295.6	[1]
Depreciation and amortization									(205.9)		(168.1)		(94.5)
Loss on extinguishments of debt											13.3		38.1
Noncontrolling interests (i)									3.8	[2]	1.4	[2]	2.4	[2]
Operating income									$ 394.4		$ 168.7		$ 241.6

[1] The following table provides a reconciliation of Partnership EBITDA to AmeriGas Propane operating income:Year ended September 30, 2013 2012 2011Partnership EBITDA $596.5 $322.1 $295.6Depreciation and amortization (205.9) (168.1) (94.5)Loss on extinguishments of debt — 13.3 38.1Noncontrolling interests (i) 3.8 1.4 2.4Operating income $394.4 $168.7 $241.6(i)Principally represents the General Partner’s 1.01% interest in AmeriGas OLP.

[2] Principally represents the General Partner’s 1.01% interest in AmeriGas OLP.