Segment Information (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Reconciliation of partnership EBITDA
Depreciation and amortization	$ (84.6)		$ (57.8)		$ (227.7)		$ (168.6)
Loss on extinguishment of debt	(0.1)		0		13.3		18.8
Operating income (loss)	(19.2)		17.2		549.9		626.5
AmeriGas Propane [Member]
Reconciliation of partnership EBITDA
Partnership EBITDA	1.8	[1],[2]	31.1	[1],[2]	310.0	[3],[4]	301.9	[3],[4]
Depreciation and amortization	(49.5)		(24.5)		(118.5)		(70.4)
Loss on extinguishment of debt	(0.1)		0		13.3		18.8
Noncontrolling interests	(0.6)	[5]	0.1	[5]	1.9	[5]	2.6	[5]
Operating income (loss)	$ (48.4)		$ 6.7		$ 206.7		$ 252.9

[1] Includes $0.1 gain associated with extinguishments of Partnership debt in 2012.

[2] The following table provides a reconciliation of Partnership EBITDA to AmeriGas Propane operating income (loss):Three Months Ended June 30, 2012 2011Partnership EBITDA (ii) $1.8 $31.1Depreciation and amortization (49.5) (24.5)Gain on extinguishments of debt (0.1) —Noncontrolling interests (i) (0.6) 0.1Operating (loss) income $(48.4) $6.7

[3] Includes $13.3 loss and $18.8 loss, respectively, associated with extinguishments of Partnership debt.

[4] The following table provides a reconciliation of Partnership EBITDA to AmeriGas Propane operating income:Nine Months Ended June 30, 2012 2011Partnership EBITDA (ii) $310.0 $301.9Depreciation and amortization (118.5) (70.4)Loss on extinguishment of debt 13.3 18.8Noncontrolling interests (i) 1.9 2.6Operating income $206.7 $252.9

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