CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Revenues	$ 1,380	$ 1,659	$ 5,968	$ 7,524
Costs and expenses:
Cost of sales (excluding depreciation and amortization shown below)	639	1,104	2,871	6,358
Operating and administrative expenses	501	523	1,622	1,639
Depreciation and amortization	139	134	414	397
Impairment of goodwill	0	656	0	656
Impairment of held-for-sale assets	62	0	62	0
Loss on disposal of UGI International energy marketing business	1	0	29	215
Other operating income, net	(29)	(26)	(46)	(60)
Costs and expenses	1,313	2,391	4,952	9,205
Operating income (loss)	67	(732)	1,016	(1,681)
(Loss) income from equity investees	(24)	1	(22)	2
Loss on extinguishments of debt	(7)	(9)	(7)	(9)
Other non-operating income (expense), net	5	1	3	(25)
Interest expense	(96)	(96)	(296)	(281)
(Loss) income before income taxes	(55)	(835)	694	(1,994)
Income tax benefit (expense)	7	46	(152)	361
Net (loss) income attributable to UGI Corporation	$ (48)	$ (789)	$ 542	$ (1,633)
(Loss) earnings per common share attributable to UGI Corporation stockholders:
Basic (in USD per share)	$ (0.23)	$ (3.76)	$ 2.58	$ (7.78)
Diluted (in USD per share)	$ (0.23)	$ (3.76)	$ 2.52	$ (7.78)
Weighted-average common shares outstanding (thousands):
Basic (in shares)	210,679	209,706	210,090	209,811
Diluted (in shares)	210,679	209,706	215,218	209,811