v3.22.4
Pension and Other Postretirement Benefits - Benefit Obligation and Funded Status (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Apr. 30, 2021
Dec. 31, 2020
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Apr. 01, 2020
Jan. 01, 2020
Amounts recognized on the Consolidated Balance Sheet:              
Noncurrent assets           $ 65  
Noncurrent liabilities           $ (15)  
United States              
Amounts recognized on the Consolidated Balance Sheet:              
Current liabilities             $ (60)
Pension benefits​              
Change in benefit obligation              
Benefit obligation at beginning of year     $ 2,817 $ 4,081      
Service cost     16 21 $ 21    
Interest cost     75 63 108    
Amendments     23 0      
Actuarial losses     (722) (105)      
Benefits paid     (135) (183)      
Settlements     (78) (1,051)      
Foreign currency translation impact     (33) (9)      
Divestitures     (2) 0      
Benefit obligation at end of year   $ 4,081 1,961 2,817 4,081    
Change in plan assets              
Fair value of plan assets at beginning of year     2,124 2,754      
Actual return on plan assets     (535) 177      
Employer contributions     31 458      
Benefits paid     (127) (176)      
Settlements     (78) (1,069)      
Foreign currency translation impact     (32) (3)      
Administrative expenses     0 (17)      
Fair value of plan assets at end of year   2,754 1,383 2,124 2,754    
Funded status     578 693      
Amounts recognized on the Consolidated Balance Sheet:              
Noncurrent assets     15 32      
Current liabilities     (7) (8)      
Noncurrent liabilities     (586) (717)      
Net amount recognized     (578) (693)      
Amounts recognized in Accumulated Other Comprehensive Loss (pretax):              
Net actuarial loss     1,165 1,389      
Prior service cost (benefit)     20 0      
Net amount recognized     1,185 1,389      
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Income (pretax):              
Net actuarial gain     (103) (137)      
Prior service cost (benefit)     23 0      
Amortization of prior service (cost) benefit     (3) 0      
Amortization of net actuarial loss (includes settlements)     (121) (678)      
Total     (204) (815)      
Actuarial loss attributable to change in discount rate used to determine benefit obligation     725 130      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]              
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Actuarial Gain (Loss) Attributable To Change In Discount Rate     (725) (130)      
Pension benefits​ | United States              
Change in benefit obligation              
Benefit obligation at beginning of year     2,398        
Settlements $ 995 240          
Benefit obligation at end of year 3,337   1,716 2,398      
Change in plan assets              
Fair value of plan assets at beginning of year     1,744        
Employer contributions 250            
Fair value of plan assets at end of year $ 2,790   1,167 1,744      
Funded status     549 654      
Other postretirement benefits              
Change in benefit obligation              
Benefit obligation at beginning of year     440 514      
Service cost     5 6 5    
Interest cost     10 11 13    
Amendments     0 (30)      
Actuarial losses     (96) (23)      
Benefits paid     (30) (38)      
Settlements     0 0      
Foreign currency translation impact     0 0      
Divestitures     0 0      
Benefit obligation at end of year   514 329 440 514    
Change in plan assets              
Fair value of plan assets at beginning of year     0 0      
Actual return on plan assets     0 0      
Employer contributions     0 0      
Benefits paid     0 0      
Settlements     0 0      
Foreign currency translation impact     0 0      
Administrative expenses     0 0      
Fair value of plan assets at end of year   $ 0 0 0 $ 0    
Funded status     329 440      
Amounts recognized on the Consolidated Balance Sheet:              
Noncurrent assets     0 0      
Current liabilities     (27) (29)      
Noncurrent liabilities     (302) (411)      
Net amount recognized     (329) (440)      
Amounts recognized in Accumulated Other Comprehensive Loss (pretax):              
Net actuarial loss     62 166      
Prior service cost (benefit)     (77) (85)      
Net amount recognized     (15) 81      
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Income (pretax):              
Net actuarial gain     (96) (23)      
Prior service cost (benefit)     0 (30)      
Amortization of prior service (cost) benefit     8 6      
Amortization of net actuarial loss (includes settlements)     (8) (8)      
Total     (96) (55)      
Actuarial loss attributable to change in discount rate used to determine benefit obligation     100 15      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]              
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Actuarial Gain (Loss) Attributable To Change In Discount Rate     $ (100) $ (15)