Consolidated Statements of Changes In Equity - USD ($) $ in Millions	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, 2012			$ 1,157.7	$ 1,156.0	$ (55.2)	$ (28.7)	$ 1,085.6
Employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld			29.7
Employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld						35.2
Dividend reinvestment plan			1.4			0.8
Excess tax benefits realized on equity-based compensation			9.4
Equity-based compensation expense			9.9
Loss from acquisition of noncontrolling interests through business combination			0.0
Net income attributable to UGI Corporation	$ 427.6			278.1			149.5
Cash dividends on common stock ($0.890, $0.791 and $0.737 per share, respectively)				(125.8)
Net gains 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 (losses) gains, net of tax					5.3
Reclassification of benefit plans actuarial losses and prior service costs, net of tax	(1.2)				1.2
Foreign currency (losses) gains on long-term intra-company transactions, net of tax	3.2				3.2
Foreign currency translation adjustments, net of tax	28.8				28.8
Repurchases of common stock						0.0
Reacquired common stock - employee and director plans						(39.6)
Net gains on derivative instruments							4.6
Reclassification of net (gains) losses on derivative instruments							38.2
Dividends and distributions							(226.7)
Change in noncontrolling interests as a result of business combination							0.0
Other							4.2
Balance, end of year at Sep. 30, 2013	3,547.9	$ 2,492.5	1,208.1	1,308.3	8.4	(32.3)	1,055.4
Employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld			(16.4)
Employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld						65.8
Excess tax benefits realized on equity-based compensation			12.5
Equity-based compensation expense			11.4
Loss from acquisition of noncontrolling interests through business combination			0.0
Net income attributable to UGI Corporation	532.6			337.2			195.4
Cash dividends on common stock ($0.890, $0.791 and $0.737 per share, respectively)				(136.1)
Net gains on derivative instruments, net of tax	54.0				21.6
Reclassification of net losses (gains) on derivative instruments, net of tax	(45.2)				(4.0)
Benefit plans, principally actuarial (losses) gains, net of tax					(5.2)
Reclassification of benefit plans actuarial losses and prior service costs, net of tax	(1.0)				1.0
Foreign currency (losses) gains on long-term intra-company transactions, net of tax	(19.8)				(19.8)
Foreign currency translation adjustments, net of tax	(23.2)				(23.2)
Repurchases of common stock						(39.8)
Reacquired common stock - employee and director plans						(38.4)
Net gains on derivative instruments							32.4
Reclassification of net (gains) losses on derivative instruments							(41.2)
Dividends and distributions							(238.0)
Change in noncontrolling interests as a result of business combination							0.0
Other							0.1
Balance, end of year at Sep. 30, 2014	2,659.1
Balance, end of year at Sep. 30, 2014	3,663.2	2,659.1	1,215.6	1,509.4	(21.2)	(44.7)	1,004.1
Employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld			(22.1)
Employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld						40.5
Dividend reinvestment plan						0.0
Excess tax benefits realized on equity-based compensation			8.3
Equity-based compensation expense			13.2
Loss from acquisition of noncontrolling interests through business combination			(0.4)
Net income attributable to UGI Corporation	414.0			281.0			133.0
Cash dividends on common stock ($0.890, $0.791 and $0.737 per share, respectively)				(153.5)
Net gains on derivative instruments, net of tax	16.8				16.8
Reclassification of net losses (gains) on derivative instruments, net of tax	1.6				3.7
Benefit plans, principally actuarial (losses) gains, net of tax					(1.2)
Reclassification of benefit plans actuarial losses and prior service costs, net of tax	(1.4)				1.4
Foreign currency (losses) gains on long-term intra-company transactions, net of tax	(50.6)				(50.6)
Foreign currency translation adjustments, net of tax	(63.5)				(63.5)
Repurchases of common stock						(34.1)
Reacquired common stock - employee and director plans						(6.6)
Reclassification of net (gains) losses on derivative instruments							(2.1)
Dividends and distributions							(249.4)
Change in noncontrolling interests as a result of business combination							(5.2)
Balance, end of year at Sep. 30, 2015	2,692.0
Balance, end of year at Sep. 30, 2015	$ 3,572.4	$ 2,692.0	$ 1,214.6	$ 1,636.9	$ (114.6)	$ (44.9)	$ 880.4