CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Revenues	$ 2,759	$ 2,673
Costs and expenses:
Cost of sales (excluding depreciation and amortization shown below)	3,106	2,120
Operating and administrative expenses	529	514
Depreciation and amortization	131	129
Loss on disposal of U.K. energy marketing business	215	0
Other operating income, net	(18)	(22)
Costs and expenses	3,963	2,741
Operating loss	(1,204)	(68)
Income from equity investees	1	8
Loss on extinguishments of debt	0	(11)
Other non-operating (expense) income, net	(28)	10
Interest expense	(92)	(81)
Loss before income taxes	(1,323)	(142)
Income tax benefit	369	46
Net loss including noncontrolling interests	(954)	(96)
Deduct net income attributable to noncontrolling interests	0	(1)
Net loss attributable to UGI Corporation	$ (954)	$ (97)
Loss per common share attributable to UGI Corporation stockholders:
Basic (in USD per share)	$ (4.54)	$ (0.46)
Diluted (in USD per share)	$ (4.54)	$ (0.46)
Weighted-average common shares outstanding (thousands):
Basic (in shares)	209,934	209,673
Diluted (in shares)	209,934	209,673