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Description of Business and Basis of Presentation - Additional Information (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Feb. 07, 2020
shares
Feb. 04, 2020
$ / shares
shares
Dec. 31, 2021
Segment
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Related Party Transaction [Line Items]          
Number of reportable segments | Segment     4    
Pactiv Evergreen Inc.          
Related Party Transaction [Line Items]          
Cost allocated to related party service provided | $       $ 2 $ 41
Related party transaction historical expenses not allocated | $       1 22
Outstanding common stock shares exchanged immediately prior to IPO | shares   155,455      
Pactiv Evergreen Inc. | Underwriters          
Related Party Transaction [Line Items]          
Number of common stock shares sold | shares 7,075,500        
IPO | Pactiv Evergreen Inc.          
Related Party Transaction [Line Items]          
Issuance costs | $       $ 2 $ 28
Number of common stock shares sold | shares   54,245,500      
Shares issued, price per share | $ / shares   $ 26.00