v3.22.2
Pension and Other Postretirement Benefits - Narrative (Details)
 1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2022
plan
Jan. 31, 2021
USD ($)
plan
Jun. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
plan
May 31, 2022
USD ($)
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   $ 200,000,000 $ 7        
Defined Benefit Plan, Number Of Pension Plans | plan 2 2   2      
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 $ 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    
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   $ 183,000,000 $ 15,000,000 $ 15,000,000      
Defined Benefit Plan, Employer Contribution, Additional Contribution Above Minimum Requirement   $ 17,000,000