CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income attributable to UGI Corporation	$ 375	$ 94
Other comprehensive income (loss):
Net gains (losses) on derivative instruments (net of tax of $(5) and $7, respectively)	15	(15)
Reclassifications of net (gains) losses on derivative instruments (net of tax of $0 and $3, respectively)	(2)	(10)
Foreign currency adjustments (net of tax of $(20) and $12, respectively)	(72)	49
Benefit plans (net of tax of $0 and $0, respectively)	(1)	0
Other comprehensive income (loss)	(60)	24
Comprehensive income attributable to UGI Corporation	$ 315	$ 118