CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenues	$ 7,210	$ 8,928	$ 10,106
Costs and expenses:
Cost of sales (excluding depreciation and amortization shown below)	3,529	6,937	5,973
Operating and administrative expenses	2,132	2,158	2,028
Depreciation and amortization	551	532	518
Impairment of goodwill	195	656	0
Loss on disposals of businesses	95	221	0
Other operating income, net	(62)	(132)	(79)
Total costs and expenses	6,440	10,372	8,440
Operating income (loss)	770	(1,444)	1,666
(Loss) income from equity investees	(19)	2	(14)
Loss on extinguishments of debt	(9)	(9)	(11)
Other non-operating (expense) income, net	(8)	(7)	75
Interest expense	(394)	(379)	(329)
Income (loss) before income taxes	340	(1,837)	1,387
Income tax (expense) benefit	(71)	335	(313)
Net income (loss) including noncontrolling interests	269	(1,502)	1,074
Deduct net income attributable to noncontrolling interests	0	0	(1)
Net income (loss) attributable to UGI Corporation	$ 269	$ (1,502)	$ 1,073
Earnings per common share attributable to UGI Corporation stockholders:
Basic (in dollars per share)	$ 1.27	$ (7.16)	$ 5.11
Diluted (in dollars per share)	$ 1.25	$ (7.16)	$ 4.97
Weighted-average common shares outstanding:
Basic (in shares)	211,309	209,806	209,940
Diluted (in shares)	215,271	209,806	215,821