Condensed Consolidated Statements of Income (unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Condensed Consolidated Statements of Income [Abstract]
Revenues	$ 2,427.5	$ 2,181.0	$ 4,116.3	$ 3,946.6
Costs and expenses:
Cost of sales (excluding depreciation shown below)	1,526.6	1,423.9	2,628.4	2,586.5
Operating and administrative expenses	444.3	350.0	785.7	662.1
Utility taxes other than income taxes	4.9	5.4	9.0	9.8
Depreciation	68.7	49.0	121.5	98.2
Amortization	14.1	6.5	21.6	12.6
Other income, net	(10.9)	(10.8)	(19.0)	(31.9)
Total costs and expenses	2,046.7	1,824.0	3,547.2	3,337.3
Operating income	380.8	357.0	569.1	609.3
Loss from equity investees		(0.4)	(0.1)	(0.6)
Loss on extinguishment of debt	(13.4)	(18.8)	(13.4)	(18.8)
Interest expense	(65.3)	(34.3)	(101.3)	(67.6)
Income before income taxes	302.1	303.5	454.3	522.3
Income taxes	(75.1)	(87.9)	(117.2)	(151.7)
Net income	227.0	215.6	337.1	370.6
Less: net income attributable to noncontrolling interests, principally in AmeriGas Partners	(93.6)	(66.2)	(116.7)	(108.1)
Net income attributable to UGI Corporation	$ 133.4	$ 149.4	$ 220.4	$ 262.5
Earnings per common share attributable to UGI stockholders:
Basic	$ 1.19	$ 1.34	$ 1.96	$ 2.36
Diluted	$ 1.18	$ 1.32	$ 1.95	$ 2.33
Average common shares outstanding (thousands):
Basic	112,510	111,637	112,380	111,267
Diluted	113,239	113,160	113,085	112,782
Dividends declared per common share	$ 0.26	$ 0.25	$ 0.52	$ 0.50