CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenues	$ 2,467	$ 3,106	$ 4,588	$ 5,865
Costs and expenses:
Cost of sales (excluding depreciation and amortization shown below)	1,030	2,148	2,232	5,254
Operating and administrative expenses	591	587	1,121	1,116
Depreciation and amortization	138	132	275	263
Loss on disposal of UGI International energy marketing business	0	0	28	215
Other operating income, net	(9)	(16)	(17)	(34)
Costs and expenses	1,750	2,851	3,639	6,814
Operating income (loss)	717	255	949	(949)
Income from equity investees	1	0	2	1
Other non-operating income (expense), net	11	2	(2)	(26)
Interest expense	(100)	(93)	(200)	(185)
Income (loss) before income taxes	629	164	749	(1,159)
Income tax (expense) benefit	(133)	(54)	(159)	315
Net income (loss) attributable to UGI Corporation	$ 496	$ 110	$ 590	$ (844)
Earnings (loss) per common share attributable to UGI Corporation stockholders:
Basic (in USD per share)	$ 2.36	$ 0.52	$ 2.81	$ (4.02)
Diluted (in USD per share)	$ 2.30	$ 0.51	$ 2.74	$ (4.02)
Weighted-average common shares outstanding (thousands):
Basic (in shares)	209,826	209,857	209,789	209,902
Diluted (in shares)	215,245	216,120	215,393	209,902