Segment Information - Reconciliation of Partnership EBITDA to AmeriGas Propane Operating Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended										12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2012
Reconciliation of partnership EBITDA
Partnership EBITDA											$ 655.3	[1]
Depreciation and amortization											(362.9)		(363.1)		(315.0)
Loss on extinguishments of debt											0		0		13.3
Operating income	(9.4)	62.7	588.6	363.7	[2]	(12.3)	[3]	41.5	507.7	294.2	1,005.6		831.1		538.6
AmeriGas Propane
Reconciliation of partnership EBITDA
Partnership EBITDA											664.8	[1]	596.5	[1]	322.1	[1]
Depreciation and amortization											(197.2)		(205.9)		(168.1)
Loss on extinguishments of debt											0		0		13.3
Noncontrolling interests (i)											4.4	[4]	3.8	[4]	1.4	[4]
Operating income											$ 472.0		$ 394.4		$ 168.7

[1] The following table provides a reconciliation of Partnership EBITDA to AmeriGas Propane operating income: 2014 2013 2012Partnership EBITDA $664.8 $596.5 $322.1Depreciation and amortization (197.2) (205.9) (168.1)Loss on extinguishments of debt — — 13.3Noncontrolling interests (i) 4.4 3.8 1.4Operating income $472.0 $394.4 $168.7(i)Principally represents the General Partner’s 1.01% interest in AmeriGas OLP.

[2] Includes income tax expense of $5.7 to reflect the retroactive effects to Fiscal 2013 of new tax legislation in France regarding the deductibility of certain interest expense which decreased net income attributable to UGI Corporation by $5.7 or $0.03 per diluted share (see Note 7).

[3] Includes impairment loss on private equity partnership investment which increased operating loss by $6.3 and net loss attributable to UGI Corporation by $3.7 or $0.02 per share (see Note 2).

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