CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net (loss) income including noncontrolling interests	$ (7)	$ 150	$ 831	$ 942
Other comprehensive (loss) income:
Net gains on derivative instruments (net of tax of $(3), $1, $(17) and $(1), respectively)	8	0	42	4
Reclassifications of net losses on derivative instruments (net of tax of $(1), $(1), $(4) and $(5), respectively)	3	5	13	14
Foreign currency adjustments (net of tax of $(17), $3, $(30) and $5, respectively)	(106)	16	(191)	23
Benefit plans (net of tax of $0, $(1), $(1) and $(1), respectively)	0	0	3	1
Other comprehensive (loss) income	(95)	21	(133)	42
Comprehensive (loss) income including noncontrolling interests	(102)	171	698	984
Deduct comprehensive income attributable to noncontrolling interests	0	0	(2)	0
Comprehensive (loss) income attributable to UGI Corporation	$ (102)	$ 171	$ 696	$ 984