Quarterly Data (unaudited) (Details) (USD $)	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
Net income attributable to UGI Corporation	$ (19,800,000)	$ 20,600,000	$ 214,400,000	$ 122,000,000	[1]	$ (14,200,000)	[2]	$ 9,100,000	$ 180,700,000	$ 102,500,000	$ 337,200,000	$ 278,100,000	$ 210,200,000
Earnings Per Share, Diluted	$ (0.11)	$ 0.12	$ 1.22	$ 0.70	[1]	$ (0.08)	[2]	$ 0.05	$ 1.05	$ 0.60	$ 1.92	$ 1.60	$ 1.24
Other-than-temporary impairment of an investment in a private equity partnership pre-tax loss											0	6,300,000	0
Increase in net loss due to impairment loss												3,700,000
Increase in net loss per diluted share due to impairment loss												$ 0.02
FRANCE | Foreign Tax Authority [Member]
Income tax expense				5,700,000
Restatement Adjustment [Member]
Net income attributable to UGI Corporation				$ 5.7
Earnings Per Share, Diluted				$ 0.03

[1] 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).

[2] 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).