v3.22.2.2
Pension and Other Postretirement Benefits - Narrative (Details)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Apr. 30, 2021
USD ($)
Jan. 31, 2021
USD ($)
plan
Sep. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
plan
Sep. 30, 2021
USD ($)
May 31, 2022
USD ($)
May 14, 2022
claimant
Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                    
Labor Agreement, Number of Employees | claimant                 3,300  
Labor Agreement, One Time Signing Bonus           $ 19        
Pension benefits | UNITED STATES                    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                    
Defined Benefit Plan, Plan Assets, Contributions by Employer $ 250 $ 200 $ 7 $ 7            
Defined Benefit Plan, Number Of Pension Plans | plan   2       2        
Defined Benefit Plan, Benefit Obligation, Payment for Settlement     $ 15   $ 5 $ 15 $ 24      
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax             549      
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan             $ 549      
Pension benefits | UNITED STATES | Hourly Plan                    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                    
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate               4.66%   2.96%
Defined Benefit Plan, Change in amounts for Asset (Liability) Recognized in Statement of Financial Position               $ 13    
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax           $ 10        
Defined Benefit Plan, Net Periodic Benefit Cost, (Increase) Decrease for Remeasurement due to Amendment               8    
Defined Benefit Plan, Service Cost, (Increase) Decrease for Remeasurement due to Settlement               2    
Defined Benefit Plan, Non-service Cost, (Increase) Decrease for Remeasurement due to Settlement               $ 10    
Pension benefits | UNITED STATES | Salaried Plan                    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                    
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate     5.71%     5.71%       2.82%
Defined Benefit Plan, Change in amounts for Asset (Liability) Recognized in Statement of Financial Position     $ 34     $ 34        
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax           26        
Defined Benefit Plan, Net Periodic Benefit Cost, (Increase) Decrease for Remeasurement due to Amendment     8     8        
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax           15        
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax           12        
Defined Benefit Plan, Funded Plan | Pension benefits | UNITED STATES                    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                    
Defined Benefit Plan, Minimum Required Employer Contributions, Next Fiscal Year   $ 183 $ 8     $ 8        
Defined Benefit Plan, Employer Contribution, Additional Contribution Above Minimum Requirement   $ 17