CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Revenues	$ 2,006.6	$ 2,200.2
Costs and expenses:
Cost of sales (excluding depreciation and amortization shown below)	1,008.0	1,425.0
Operating and administrative expenses	511.2	503.2
Depreciation and amortization	119.4	111.2
Other operating income, net	(9.2)	(6.9)
Total cost and expenses	1,629.4	2,032.5
Operating income	377.2	167.7
Income from equity investees	6.5	1.5
Loss on extinguishments of debt	0.0	(6.1)
Other non-operating (expense) income, net	(11.5)	9.0
Interest expense	(84.1)	(60.2)
Income before income taxes	288.1	111.9
Income tax expense	(76.1)	(23.4)
Net income including noncontrolling interests	212.0	88.5
Deduct net income attributable to noncontrolling interests, principally in AmeriGas Partners	0.0	(24.3)
Net income attributable to UGI Corporation	$ 212.0	$ 64.2
Earnings per common share attributable to UGI Corporation stockholders:
Basic (in USD per share)	$ 1.01	$ 0.37
Diluted (in USD per share)	$ 1.00	$ 0.36
Weighted-average common shares outstanding (thousands):
Basic (in shares)	209,439	174,413
Diluted (in shares)	211,258	177,566