Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Mar. 31, 2023

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income

The tables below present changes in AOCI, net of tax:

Three Months Ended March 31, 2023	Postretirement Benefit Plans		Derivative Instruments		Foreign Currency		Total
AOCI — December 31, 2022	$	14	$	35	$	(280)	$	(231)
Other comprehensive (loss) income before reclassification adjustments	—		(15)		10		(5)
Amounts reclassified from AOCI	—		(5)		—		(5)
Other comprehensive (loss) income attributable to UGI	—		(20)		10		(10)
AOCI — March 31, 2023	$	14	$	15	$	(270)	$	(241)
Three Months Ended March 31, 2022	Postretirement Benefit Plans		Derivative Instruments		Foreign Currency		Total
AOCI — December 31, 2021	$	(15)	$	(19)	$	(122)	$	(156)
Other comprehensive income (loss) before reclassification adjustments	—		24		(53)		(29)
Amounts reclassified from AOCI	1		6		—		7
Other comprehensive income (loss) attributable to UGI	1		30		(53)		(22)
AOCI — March 31, 2022	$	(14)	$	11	$	(175)	$	(178)
Six Months Ended March 31, 2023	Postretirement Benefit Plans		Derivative Instruments		Foreign Currency		Total
AOCI — September 30, 2022	$	14	$	37	$	(431)	$	(380)
Other comprehensive (loss) income before reclassification adjustments	—		(12)		161		149
Amounts reclassified from AOCI	—		(10)		—		(10)
Other comprehensive (loss) income attributable to UGI	—		(22)		161		139
AOCI — March 31, 2023	$	14	$	15	$	(270)	$	(241)
Six Months Ended March 31, 2022	Postretirement Benefit Plans		Derivative Instruments		Foreign Currency		Total
AOCI — September 30, 2021	$	(17)	$	(33)	$	(90)	$	(140)
Other comprehensive income (loss) before reclassification adjustments	—		34		(85)		(51)
Amounts reclassified from AOCI	3		10		—		13
Other comprehensive income (loss) attributable to UGI	3		44		(85)		(38)
AOCI — March 31, 2022	$	(14)	$	11	$	(175)	$	(178)