Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Jun. 30, 2023

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income, Net of Tax

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

Three Months Ended June 30, 2023	Postretirement Benefit Plans		Derivative Instruments		Foreign Currency		Total
AOCI — March 31, 2023	$	14	$	15	$	(270)	$	(241)
Other comprehensive income before reclassification adjustments	—		22		8		30
Amounts reclassified from AOCI	(1)		(10)		—		(11)
Other comprehensive (loss) income attributable to UGI	(1)		12		8		19
AOCI — June 30, 2023	$	13	$	27	$	(262)	$	(222)
Three Months Ended June 30, 2022	Postretirement Benefit Plans		Derivative Instruments		Foreign Currency		Total
AOCI — March 31, 2022	$	(14)	$	11	$	(175)	$	(178)
Other comprehensive income (loss) before reclassification adjustments	—		8		(106)		(98)
Amounts reclassified from AOCI	—		3		—		3
Other comprehensive income (loss) attributable to UGI	—		11		(106)		(95)
AOCI — June 30, 2022	$	(14)	$	22	$	(281)	$	(273)
Nine Months Ended June 30, 2023	Postretirement Benefit Plans		Derivative Instruments		Foreign Currency		Total
AOCI — September 30, 2022	$	14	$	37	$	(431)	$	(380)
Other comprehensive income before reclassification adjustments	—		10		169		179
Amounts reclassified from AOCI	(1)		(20)		—		(21)
Other comprehensive (loss) income attributable to UGI	(1)		(10)		169		158
AOCI — June 30, 2023	$	13	$	27	$	(262)	$	(222)
Nine Months Ended June 30, 2022	Postretirement Benefit Plans		Derivative Instruments		Foreign Currency		Total
AOCI — September 30, 2021	$	(17)	$	(33)	$	(90)	$	(140)
Other comprehensive income (loss) before reclassification adjustments	—		42		(191)		(149)
Amounts reclassified from AOCI	3		13		—		16
Other comprehensive income (loss) attributable to UGI	3		55		(191)		(133)
AOCI — June 30, 2022	$	(14)	$	22	$	(281)	$	(273)