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Pension and Other Postretirement Benefits - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 11, 2021
Mar. 31, 2022
Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restructuring and other charges (credits)   $ 2 $ 9
Pension benefits      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restructuring and other charges (credits)   1 3
Increase (decrease) in minimum required pension funding $ 33 $ 13  
Other postretirement benefits      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Increase (decrease) in obligation, pension benefits     $ (39)