CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Revenues	$ 3,106	$ 3,466	$ 5,865	$ 6,139
Costs and expenses:
Cost of sales (excluding depreciation and amortization shown below)	2,148	1,470	5,254	3,590
Operating and administrative expenses	587	553	1,116	1,067
Depreciation and amortization	132	128	263	257
Loss on disposal of U.K. energy marketing business	0	0	215	0
Other operating income, net	(16)	(17)	(34)	(39)
Costs and expenses	2,851	2,134	6,814	4,875
Operating income (loss)	255	1,332	(949)	1,264
Income from equity investees	0	5	1	13
Loss on extinguishment of debt	0	0	0	(11)
Other non-operating income (expense), net	2	11	(26)	21
Interest expense	(93)	(82)	(185)	(163)
Income (loss) before income taxes	164	1,266	(1,159)	1,124
Income tax (expense) benefit	(54)	(332)	315	(286)
Net income (loss) including noncontrolling interests	110	934	(844)	838
Deduct net income attributable to noncontrolling interests	0	(1)	0	(2)
Net income (loss) attributable to UGI Corporation	$ 110	$ 933	$ (844)	$ 836
Loss per common share attributable to UGI Corporation stockholders:
Basic (in USD per share)	$ 0.52	$ 4.44	$ (4.02)	$ 3.98
Diluted (in USD per share)	$ 0.51	$ 4.32	$ (4.02)	$ 3.87
Weighted-average common shares outstanding (thousands):
Basic (in shares)	209,857	210,163	209,902	209,919
Diluted (in shares)	216,120	215,928	209,902	215,936