CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net gains (losses) on derivative instruments, tax	$ (5)	$ 7
Reclassifications of net gain on derivative instruments, tax	0	3
Foreign currency adjustments, tax	(20)	12
Benefit plans, net of tax	0	0
Net income attributable to UGI Corporation	$ 375	$ 94