Consolidated Statements of Changes In Equity (USD $)	Total	Total UGI Corporation Stockholder's Equity	Common Stock, Without Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interests
Balance, beginning of year at Sep. 30, 2011							$ 213,000,000
Balance, beginning of year at Sep. 30, 2011			937,400,000	1,064,900,000	(1,000,000)	(27,800,000)
Employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld			13,600,000			6,400,000
Dividend reinvestment plan			2,200,000			900,000
Excess tax benefits realized on equity-based compensation			1,800,000
Equity-based compensation expense			8,300,000
Adjustments to reflect change in ownership of AmeriGas Partners, net of tax			194,400,000		1,900,000		(321,400,000)
Net income attributable to UGI Corporation	210,200,000			210,200,000
Cash dividends on common stock ($0.791, $0.737 and $0.707 per share, respectively)				(119,100,000)
Net gains (losses) on derivative instruments, net of tax	(105,400,000)				(45,600,000)
Reclassification of net (gains) losses on derivative instruments, net of tax	56,300,000				22,600,000
Benefit plans, principally actuarial (losses) gains, net of tax	(11,500,000)				(11,500,000)
Reclassification of benefit plans actuarial losses and prior service costs, net of tax, to net income	(700,000)				700,000
Foreign currency (losses) gains on long-term intra-company transactions, net of tax	(1,700,000)				(1,700,000)
Foreign currency translation adjustments, net of tax	(20,600,000)				(20,600,000)
Repurchases of common stock						0
Reacquired common stock - employee and director plans						(8,200,000)
Net income (loss) attributable to noncontrolling interests, principally in AmeriGas Partners	(12,500,000)						(12,500,000)
Net gains (losses) on derivative instruments							(59,800,000)
Reclassification of net (gains) losses on derivative instruments							33,700,000
Dividends and distributions							(182,100,000)
AmeriGas Partners Common Unit public offering							276,600,000
AmeriGas Partners Common Units issued for Heritage Acquisition							1,132,600,000
Other							5,500,000
Balance, end of year at Sep. 30, 2012	3,315,400,000						1,085,600,000
Balance, end of year at Sep. 30, 2012		2,229,800,000	1,157,700,000	1,156,000,000	(55,200,000)	(28,700,000)
Employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld			29,700,000			35,200,000
Dividend reinvestment plan			1,400,000			800,000
Excess tax benefits realized on equity-based compensation			9,400,000
Equity-based compensation expense			9,900,000
Adjustments to reflect change in ownership of AmeriGas Partners, net of tax			0		0		0
Net income attributable to UGI Corporation	278,100,000			278,100,000
Cash dividends on common stock ($0.791, $0.737 and $0.707 per share, respectively)				(125,800,000)
Net gains (losses) on derivative instruments, net of tax	14,400,000				9,800,000
Reclassification of net (gains) losses on derivative instruments, net of tax	53,500,000				15,300,000
Benefit plans, principally actuarial (losses) gains, net of tax	5,300,000				5,300,000
Reclassification of benefit plans actuarial losses and prior service costs, net of tax, to net income	(1,200,000)				1,200,000
Foreign currency (losses) gains on long-term intra-company transactions, net of tax	3,200,000				3,200,000
Foreign currency translation adjustments, net of tax	28,800,000				28,800,000
Repurchases of common stock						0
Reacquired common stock - employee and director plans						(39,600,000)
Net income (loss) attributable to noncontrolling interests, principally in AmeriGas Partners	149,500,000						149,500,000
Net gains (losses) on derivative instruments							4,600,000
Reclassification of net (gains) losses on derivative instruments							38,200,000
Dividends and distributions							(226,700,000)
AmeriGas Partners Common Unit public offering							0
AmeriGas Partners Common Units issued for Heritage Acquisition							0
Other							4,200,000
Balance, end of year at Sep. 30, 2013	3,547,900,000						1,055,400,000
Balance, end of year at Sep. 30, 2013	2,492,500,000	2,492,500,000	1,208,100,000	1,308,300,000	8,400,000	(32,300,000)
Employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld			(16,400,000)			65,800,000
Dividend reinvestment plan						0
Excess tax benefits realized on equity-based compensation			12,500,000
Equity-based compensation expense			11,400,000
Adjustments to reflect change in ownership of AmeriGas Partners, net of tax			0		0		0
Net income attributable to UGI Corporation	337,200,000			337,200,000
Cash dividends on common stock ($0.791, $0.737 and $0.707 per share, respectively)				(136,100,000)
Net gains (losses) on derivative instruments, net of tax	54,000,000				21,600,000
Reclassification of net (gains) losses on derivative instruments, net of tax	(45,200,000)				(4,000,000)
Benefit plans, principally actuarial (losses) gains, net of tax	(5,200,000)				(5,200,000)
Reclassification of benefit plans actuarial losses and prior service costs, net of tax, to net income	(1,000,000)				1,000,000
Foreign currency (losses) gains on long-term intra-company transactions, net of tax	(19,800,000)				(19,800,000)
Foreign currency translation adjustments, net of tax	(23,200,000)				(23,200,000)
Repurchases of common stock						(39,800,000)
Reacquired common stock - employee and director plans						(38,400,000)
Net income (loss) attributable to noncontrolling interests, principally in AmeriGas Partners	195,400,000						195,400,000
Net gains (losses) on derivative instruments							32,400,000
Reclassification of net (gains) losses on derivative instruments							(41,200,000)
Dividends and distributions							(238,000,000)
AmeriGas Partners Common Unit public offering							0
AmeriGas Partners Common Units issued for Heritage Acquisition							0
Other							100,000
Balance, end of year at Sep. 30, 2014	3,663,200,000						1,004,100,000
Balance, end of year at Sep. 30, 2014	$ 2,659,100,000	$ 2,659,100,000	$ 1,215,600,000	$ 1,509,400,000	$ (21,200,000)	$ (44,700,000)