Consolidated Statements of Changes In Equity (USD $) In Millions, unless otherwise specified	Total	Total UGI Corporation Stockholder's Equity	Common stock, without par value	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock	Noncontrolling interests
Beginning Balance at Sep. 30, 2010							$ 237.4
Beginning Balance at Sep. 30, 2010			906.1	933.3	22.8	(38.2)
Common Stock issued:
Employee and director plans			14.7			9.7
Dividend reinvestment plan			2.2			0.7
Reacquired common stock - employee and director plans						0
Excess tax benefits realized on equity-based compensation			3.8
Stock-based compensation expense			10.6
Net gains (losses) on derivative instruments, net of tax	3.9				(8.7)
Reclassification of net losses (gains) on derivative instruments, net of tax	19.0				(1.0)
Benefit plans, principally actuarial gains (losses), net of tax	0.1				0.1
Reclassification of benefit plans actuarial losses and prior service costs, net of tax, to net income	0.6				0.6
Adjustments to reflect change in ownership of AmeriGas Partners, net of tax			0		0		0
Net income attributable to UGI Corporation	245.4			245.4
Cash dividends on Common Stock ($1.105, $1.06 and $1.02 per share, respectively)				(113.8)
Foreign currency gains (losses) on long-term intra-company transactions, net of tax	(0.8)				(0.8)
Foreign currency translation adjustments, net of tax	(14.0)				(14.0)
Net income (loss) attributable to noncontrolling interests, principally in AmeriGas Partners	74.6						74.6
Net gains (losses) on derivative instruments							12.6
Reclassification of net losses (gains) on derivative instruments							(18.1)
Dividends and distributions							(94.0)
AmeriGas Partners Common Unit public offering							0
AmeriGas Partners Common Units issued for Heritage Acquisition							0
Other							0.5
Ending Balance at Sep. 30, 2011		1,973.5	937.4	1,064.9	(1.0)	(27.8)
Ending Balance at Sep. 30, 2011	2,186.5						213.0
Common Stock issued:
Employee and director plans			13.6			6.4
Dividend reinvestment plan			2.2			0.9
Reacquired common stock - employee and director plans						(8.2)
Excess tax benefits realized on equity-based compensation			1.8
Stock-based compensation expense			8.3
Net gains (losses) on derivative instruments, net of tax	(105.4)				(45.6)
Reclassification of net losses (gains) on derivative instruments, net of tax	(56.3)				22.6
Benefit plans, principally actuarial gains (losses), net of tax	(11.5)				(11.5)
Reclassification of benefit plans actuarial losses and prior service costs, net of tax, to net income	0.7				0.7
Adjustments to reflect change in ownership of AmeriGas Partners, net of tax			194.4		1.9		(321.4)
Net income attributable to UGI Corporation	210.2			210.2
Cash dividends on Common Stock ($1.105, $1.06 and $1.02 per share, respectively)				(119.1)
Foreign currency gains (losses) on long-term intra-company transactions, net of tax	(1.7)				(1.7)
Foreign currency translation adjustments, net of tax	(20.6)				(20.6)
Net income (loss) attributable to noncontrolling interests, principally in AmeriGas Partners	(12.5)						(12.5)
Net gains (losses) on derivative instruments							(59.8)
Reclassification of net losses (gains) on derivative instruments							33.7
Dividends and distributions							(182.1)
AmeriGas Partners Common Unit public offering							276.6
AmeriGas Partners Common Units issued for Heritage Acquisition							1,132.6
Other							5.5
Ending Balance at Sep. 30, 2012	2,229.8	2,229.8	1,157.7	1,156.0	(55.2)	(28.7)
Ending Balance at Sep. 30, 2012	3,315.4						1,085.6
Common Stock issued:
Employee and director plans			29.7			35.2
Dividend reinvestment plan			1.4			0.8
Reacquired common stock - employee and director plans						(39.6)
Excess tax benefits realized on equity-based compensation			9.4
Stock-based compensation expense			9.9
Net gains (losses) on derivative instruments, net of tax	14.4				9.8
Reclassification of net losses (gains) on derivative instruments, net of tax	(53.5)				15.3
Benefit plans, principally actuarial gains (losses), net of tax	5.3				5.3
Reclassification of benefit plans actuarial losses and prior service costs, net of tax, to net income	1.2				1.2
Adjustments to reflect change in ownership of AmeriGas Partners, net of tax			0		0		0
Net income attributable to UGI Corporation	278.1			278.1
Cash dividends on Common Stock ($1.105, $1.06 and $1.02 per share, respectively)				(125.8)
Foreign currency gains (losses) on long-term intra-company transactions, net of tax	3.2				3.2
Foreign currency translation adjustments, net of tax	28.8				28.8
Net income (loss) attributable to noncontrolling interests, principally in AmeriGas Partners	149.5						149.5
Net gains (losses) on derivative instruments							4.6
Reclassification of net losses (gains) on derivative instruments							38.2
Dividends and distributions							(226.7)
AmeriGas Partners Common Unit public offering							0
AmeriGas Partners Common Units issued for Heritage Acquisition							0
Other							4.2
Ending Balance at Sep. 30, 2013	2,492.5	2,492.5	1,208.1	1,308.3	8.4	(32.3)
Ending Balance at Sep. 30, 2013	$ 3,547.9						$ 1,055.4