v3.22.4
Pension and Postretirement Benefit Plans - Change in Benefit Obligation and Plan Assets and Amounts Recognized in Balance Sheet and AOCI (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
​Amounts recognized in the Consolidated Balance Sheet as of December 31, (Millions)      
Non-current assets $ 1,225 $ 943  
Accrued benefit cost      
Current liabilities (77) (78)  
Non-current liabilities (1,966) (2,870)  
Postretirement Benefits      
Change in plan assets      
Company contributions 3 3  
Unfunded Plans      
Benefit Plan Information      
Maximum amount of certain nonqualified unfunded pension and postretirement benefit plans obligations not included in benefit obligation reconciliation 51 51  
Funded | Qualified and Non-qualified Pension Benefits      
Change in plan assets      
Company contributions 155 177  
Funded | Postretirement Benefits      
Change in benefit obligation      
Benefit obligation at beginning of year 2,281 2,397  
Acquisitions/Transfers 0 0  
Service cost 42 53 $ 43
Interest cost 52 43 62
Participant contributions 0 0  
Foreign exchange rate changes 1 (4)  
Plan amendments 0 0  
Actuarial (gain) loss (458) (89)  
Benefit payments (115) (113)  
Settlements, curtailments, special termination benefits and other (6) (6)  
Benefit obligation at end of year 1,797 2,281 2,397
Change in plan assets      
Fair value of plan assets at beginning of year 1,353 1,376  
Acquisitions/Transfers 0 0  
Actual return on plan assets (218) 93  
Company contributions 3 3  
Participant contributions 0 0  
Foreign exchange rate changes 0 0  
Benefit payments (115) (113)  
Settlements, curtailments, special termination benefits and other (6) (6)  
Fair value of plan assets at end of year 1,017 1,353 1,376
Funded status at end of year (780) (928)  
​Amounts recognized in the Consolidated Balance Sheet as of December 31, (Millions)      
Non-current assets 0 0  
Accrued benefit cost      
Current liabilities (11) (5)  
Non-current liabilities (769) (923)  
Ending balance (780) (928)  
Amounts recognized in accumulated other comprehensive income as of December 31, (Millions)      
Net transition obligation (asset) 0 0  
Net actuarial loss (gain) 332 538  
Prior service cost (credit) (166) (197)  
Ending balance 166 341  
Funded | United States | Qualified and Non-qualified Pension Benefits      
Change in benefit obligation      
Benefit obligation at beginning of year 18,104 19,376  
Acquisitions/Transfers 0 0  
Service cost 256 286 261
Interest cost 417 360 499
Participant contributions 0 0  
Foreign exchange rate changes 0 0  
Plan amendments 0 0  
Actuarial (gain) loss (3,777) (588)  
Benefit payments (1,495) (1,330)  
Settlements, curtailments, special termination benefits and other 0 0  
Benefit obligation at end of year 13,505 18,104 19,376
Change in plan assets      
Fair value of plan assets at beginning of year 16,953 17,127  
Acquisitions/Transfers 0 0  
Actual return on plan assets (2,875) 1,079  
Company contributions 65 77  
Participant contributions 0 0  
Foreign exchange rate changes 0 0  
Benefit payments (1,495) (1,330)  
Settlements, curtailments, special termination benefits and other 0 0  
Fair value of plan assets at end of year 12,648 16,953 17,127
Funded status at end of year (857) (1,151)  
​Amounts recognized in the Consolidated Balance Sheet as of December 31, (Millions)      
Non-current assets 0 0  
Accrued benefit cost      
Current liabilities (52) (59)  
Non-current liabilities (805) (1,092)  
Ending balance (857) (1,151)  
Amounts recognized in accumulated other comprehensive income as of December 31, (Millions)      
Net transition obligation (asset) 0 0  
Net actuarial loss (gain) 4,616 4,991  
Prior service cost (credit) (56) (80)  
Ending balance 4,560 4,911  
Accumulated benefit obligation 12,967 17,305  
Plans with accumulated benefit obligation in excess of plan assets      
Accumulated benefit obligation 402 514  
Fair value of plan assets 0 0  
Plans with projected benefit obligation in excess of plan assets      
Projected benefit obligation 13,505 18,104  
Fair value of plan assets 12,648 16,953  
Funded | United States | Postretirement Benefits      
Change in plan assets      
Fair value of plan assets at beginning of year 1,353    
Fair value of plan assets at end of year 1,017 1,353  
Funded | International | Qualified and Non-qualified Pension Benefits      
Change in benefit obligation      
Benefit obligation at beginning of year 7,942 8,770  
Acquisitions/Transfers 0 0  
Service cost 128 164 152
Interest cost 125 98 117
Participant contributions 7 10  
Foreign exchange rate changes (567) (325)  
Plan amendments 8 1  
Actuarial (gain) loss (2,240) (433)  
Benefit payments (266) (298)  
Settlements, curtailments, special termination benefits and other (65) (45)  
Benefit obligation at end of year 5,072 7,942 8,770
Change in plan assets      
Fair value of plan assets at beginning of year 8,016 8,194  
Acquisitions/Transfers 0 0  
Actual return on plan assets (1,286) 321  
Company contributions 90 100  
Participant contributions 7 10  
Foreign exchange rate changes (602) (265)  
Benefit payments (266) (298)  
Settlements, curtailments, special termination benefits and other (68) (46)  
Fair value of plan assets at end of year 5,891 8,016 $ 8,194
Funded status at end of year 819 74  
​Amounts recognized in the Consolidated Balance Sheet as of December 31, (Millions)      
Non-current assets 1,225 943  
Accrued benefit cost      
Current liabilities (14) (14)  
Non-current liabilities (392) (855)  
Ending balance 819 74  
Amounts recognized in accumulated other comprehensive income as of December 31, (Millions)      
Net transition obligation (asset) 4 6  
Net actuarial loss (gain) 157 960  
Prior service cost (credit) 10 3  
Ending balance 171 969  
Accumulated benefit obligation 4,814 7,484  
Plans with accumulated benefit obligation in excess of plan assets      
Accumulated benefit obligation 775 2,843  
Fair value of plan assets 427 2,194  
Plans with projected benefit obligation in excess of plan assets      
Projected benefit obligation 851 3,204  
Fair value of plan assets $ 442 $ 2,335