Condensed Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Other Comprehensive Income [Abstract]
Net (loss) income	$ (139)	$ 74	$ (272)	$ 117
Other comprehensive income (loss), net of income taxes:
Currency translation adjustments	10	(10)	24	(6)
Defined benefit plans			(1)	(103)
Interest rate derivatives	14		8
Other comprehensive income (loss)	24	(10)	31	(109)
Comprehensive (loss) income	(115)	64	(241)	8
Comprehensive income attributable to non-controlling interests		(1)	(1)	(1)
Comprehensive (loss) income attributable to Pactiv Evergreen Inc. common shareholders	$ (115)	$ 63	$ (242)	$ 7