CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Revenues	$ 2,030	$ 2,121
Costs and expenses:
Cost of sales (excluding depreciation and amortization shown below)	923	1,202
Operating and administrative expenses	497	530
Depreciation and amortization	138	137
Loss on disposal of business	0	28
Other operating expense (income), net	(15)	(8)
Costs and expenses	1,543	1,889
Operating income	487	232
Income (loss) from equity investees	3	1
Other non-operating income (expense), net	29	(13)
Interest expense	(102)	(100)
Income before income taxes	417	120
Income tax benefit (expense)	(42)	(26)
Net income attributable to UGI Corporation	$ 375	$ 94
Earnings per common share attributable to UGI Corporation stockholders:
Basic (in USD per share)	$ 1.74	$ 0.45
Diluted (in USD per share)	$ 1.74	$ 0.44
Weighted-average common shares outstanding (thousands):
Basic (in shares)	214,933	209,782
Diluted (in shares)	215,695	215,570