Condensed Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Net income	$ 326.2	$ 227.0	$ 496.9	$ 337.1
Net gains (losses) on derivative instruments (net of tax of $(6.9), 16.2, $(2.6) and $39.3, respectively)	9.2	(39.4)	(0.1)	(80.7)
Reclassifications of net losses on derivative instruments (net of tax of $(6.9), $(13.8), $(13.5) and $(21.8), respectively)	29.0	32.2	50.8	44.7
Foreign currency adjustments (net of tax of $8.2, $(8.0), $4.2 and $(1.5), respectively)	(23.6)	23.9	(7.5)	1.7
Benefit plans (net of tax of $(0.3), $(0.1), $(0.5), and $(0.2), respectively	0.5	0.1	0.8	0.2
Other Comprehensive Income (Loss), Net of Tax	15.1	16.8	44.0	(34.1)
Comprehensive income	341.3	243.8	540.9	303.0
Less: comprehensive income attributable to noncontrolling interests, principally in AmeriGas Partners	(171.3)	(91.4)	(250.0)	(107.7)
Comprehensive income attributable to UGI Corporation	$ 170.0	$ 152.4	$ 290.9	$ 195.3