Condensed Consolidated Statements of (Loss) Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net revenues	$ 1,426	$ 1,640	$ 2,857	$ 3,135
Cost of sales	(1,342)	(1,332)	(2,658)	(2,595)
Gross profit	84	308	199	540
Selling, general and administrative expenses	(136)	(148)	(266)	(290)
Restructuring, asset impairment and other related charges	(32)	(1)	(105)	(1)
Other income, net	4	12	4	40
Operating (loss) income	(80)	171	(168)	289
Non-operating (expense) income, net	(3)	(2)	(4)	8
Interest expense, net	(64)	(50)	(127)	(99)
(Loss) income before tax	(147)	119	(299)	198
Income tax benefit (expense)	8	(45)	27	(81)
Net (loss) income	(139)	74	(272)	117
Income attributable to non-controlling interests		(1)	(1)	(1)
Net (loss) income attributable to Pactiv Evergreen Inc. common shareholders	$ (139)	$ 73	$ (273)	$ 116
(Loss) earnings per share attributable to Pactiv Evergreen Inc. common shareholders
Basic	$ (0.78)	$ 0.41	$ (1.54)	$ 0.65
Diluted	$ (0.78)	$ 0.4	$ (1.54)	$ 0.65