Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income including noncontrolling interests	$ 167.9	$ 0.2
Other comprehensive income (loss):
Net gains on derivative instruments (net of tax of $(4.2) and $(3.9), respectively)	6.8	7.7
Reclassifications of net (gains) losses on derivative instruments (net of tax of $3.2 and $(1.5), respectively)	(5.3)	2.1
Foreign currency adjustments (net of tax of $0 and $15.6, respectively)	(30.2)	(30.5)
Benefit plans (net of tax of $(0.3) and $(0.4), respectively)	0.4	0.6
Other comprehensive loss	(28.3)	(20.1)
Comprehensive income (loss) including noncontrolling interests	139.6	(19.9)
(Deduct comprehensive income) add comprehensive loss attributable to noncontrolling interests, principally in AmeriGas Partners	(53.3)	35.0
Comprehensive income attributable to UGI Corporation	$ 86.3	$ 15.1