CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income including noncontrolling interests	$ 934	$ 489	$ 838	$ 792
Other comprehensive income (loss):
Net gains on derivative instruments (net of tax of $(12), $(2), $(14) and $(2), respectively)	24	4	34	4
Reclassifications of net losses on derivative instruments (net of tax of $(1), $(2), $(3) and $(4), respectively)	6	4	10	9
Foreign currency adjustments (net of tax of $(9), $(10), $(13) and $2, respectively)	(53)	(56)	(85)	7
Benefit plans (net of tax of $0, $0, $(1) and $0, respectively)	1	1	3	1
Other comprehensive (loss) income	(22)	(47)	(38)	21
Comprehensive income including noncontrolling interests	912	442	800	813
Deduct comprehensive income attributable to noncontrolling interests	(1)	0	(2)	0
Comprehensive income attributable to UGI Corporation	$ 911	$ 442	$ 798	$ 813