v3.25.4
Pension and Postretirement Benefit Plans - Schedule of Pension Asset Fair Values (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension plans | United States      
Benefit Plan Information      
Fair value of plan assets $ 7,641 $ 7,498 $ 12,348
Pension plans | International      
Benefit Plan Information      
Fair value of plan assets 5,740 5,397 6,341
Pension plans | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 7,641 7,498  
Pension plans | Levels 1, 2 and 3 | International      
Benefit Plan Information      
Fair value of plan assets 5,740 5,397  
Pension plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 3,283 2,583  
Pension plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 1 | International      
Benefit Plan Information      
Fair value of plan assets 818 485  
Pension plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 2,185 2,795  
Pension plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 2 | International      
Benefit Plan Information      
Fair value of plan assets 3,628 3,808  
Pension plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 1 13  
Pension plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 3 | International      
Benefit Plan Information      
Fair value of plan assets 540 507  
Pension plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 2,248 2,354  
Pension plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Investments Measured at Net Asset Value | International      
Benefit Plan Information      
Fair value of plan assets 893 851  
Pension plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 7,717 7,745  
Pension plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Levels 1, 2 and 3 | International      
Benefit Plan Information      
Fair value of plan assets 5,879 5,651  
Pension plans | Equities | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 1,537 1,318  
Pension plans | Equities | Level 1 | International      
Benefit Plan Information      
Fair value of plan assets 223 231  
Pension plans | Equities | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Equities | Level 2 | International      
Benefit Plan Information      
Fair value of plan assets 118 437  
Pension plans | Equities | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Equities | Level 3 | International      
Benefit Plan Information      
Fair value of plan assets 1 1  
Pension plans | Equities | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Equities | Investments Measured at Net Asset Value | International      
Benefit Plan Information      
Fair value of plan assets 2 2  
Pension plans | Equities | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 1,537 1,318  
Pension plans | Equities | Levels 1, 2 and 3 | International      
Benefit Plan Information      
Fair value of plan assets 344 671  
Pension plans | Fixed income and private credit | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 1,594 1,227  
Pension plans | Fixed income and private credit | Level 1 | International      
Benefit Plan Information      
Fair value of plan assets 515 150  
Pension plans | Fixed income and private credit | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 2,171 2,774  
Pension plans | Fixed income and private credit | Level 2 | International      
Benefit Plan Information      
Fair value of plan assets 3,390 3,248  
Pension plans | Fixed income and private credit | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Fixed income and private credit | Level 3 | International      
Benefit Plan Information      
Fair value of plan assets 5 2  
Pension plans | Fixed income and private credit | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 249 336  
Pension plans | Fixed income and private credit | Investments Measured at Net Asset Value | International      
Benefit Plan Information      
Fair value of plan assets 1 1  
Pension plans | Fixed income and private credit | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 4,014 4,337  
Pension plans | Fixed income and private credit | Levels 1, 2 and 3 | International      
Benefit Plan Information      
Fair value of plan assets 3,911 3,401  
Pension plans | Private equity | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Private equity | Level 1 | International      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Private equity | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Private equity | Level 2 | International      
Benefit Plan Information      
Fair value of plan assets 24 21  
Pension plans | Private equity | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 0 13  
Pension plans | Private equity | Level 3 | International      
Benefit Plan Information      
Fair value of plan assets 2 1  
Pension plans | Private equity | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 1,062 1,179  
Pension plans | Private equity | Investments Measured at Net Asset Value | International      
Benefit Plan Information      
Fair value of plan assets 782 736  
Pension plans | Private equity | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 1,062 1,192  
Pension plans | Private equity | Levels 1, 2 and 3 | International      
Benefit Plan Information      
Fair value of plan assets 808 758  
Pension plans | Absolute return | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Absolute return | Level 1 | International      
Benefit Plan Information      
Fair value of plan assets 0 5  
Pension plans | Absolute return | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 0 7  
Pension plans | Absolute return | Level 2 | International      
Benefit Plan Information      
Fair value of plan assets 43 44  
Pension plans | Absolute return | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 1 0  
Pension plans | Absolute return | Level 3 | International      
Benefit Plan Information      
Fair value of plan assets 532 503  
Pension plans | Absolute return | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 602 563  
Pension plans | Absolute return | Investments Measured at Net Asset Value | International      
Benefit Plan Information      
Fair value of plan assets 108 112  
Pension plans | Absolute return | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 603 570  
Pension plans | Absolute return | Levels 1, 2 and 3 | International      
Benefit Plan Information      
Fair value of plan assets 683 664  
Pension plans | Cash and cash equivalents | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 152 38  
Pension plans | Cash and cash equivalents | Level 1 | International      
Benefit Plan Information      
Fair value of plan assets 80 99  
Pension plans | Cash and cash equivalents | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 14 14  
Pension plans | Cash and cash equivalents | Level 2 | International      
Benefit Plan Information      
Fair value of plan assets 53 58  
Pension plans | Cash and cash equivalents | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Cash and cash equivalents | Level 3 | International      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Cash and cash equivalents | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 335 276  
Pension plans | Cash and cash equivalents | Investments Measured at Net Asset Value | International      
Benefit Plan Information      
Fair value of plan assets 0 0  
Pension plans | Cash and cash equivalents | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 501 328  
Pension plans | Cash and cash equivalents | Levels 1, 2 and 3 | International      
Benefit Plan Information      
Fair value of plan assets 133 157  
Pension plans | Other items to reconcile to fair value of plan assets | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets (76) (247)  
Pension plans | Other items to reconcile to fair value of plan assets | Levels 1, 2 and 3 | International      
Benefit Plan Information      
Fair value of plan assets (139) (254)  
Postretirement benefits      
Benefit Plan Information      
Fair value of plan assets 718 761 $ 980
Postretirement benefits | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 718 761  
Postretirement benefits | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 346 258  
Postretirement benefits | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 186 310  
Postretirement benefits | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 0 1  
Postretirement benefits | Defined Benefit Plan Assets, Excluding Reconciling Items | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 192 216  
Postretirement benefits | Defined Benefit Plan Assets, Excluding Reconciling Items | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 724 785  
Postretirement benefits | Equities | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 131 122  
Postretirement benefits | Equities | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Postretirement benefits | Equities | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Postretirement benefits | Equities | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Postretirement benefits | Equities | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 131 122  
Postretirement benefits | Fixed income and private credit | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 201 129  
Postretirement benefits | Fixed income and private credit | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 185 305  
Postretirement benefits | Fixed income and private credit | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Postretirement benefits | Fixed income and private credit | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 21 31  
Postretirement benefits | Fixed income and private credit | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 407 465  
Postretirement benefits | Private equity | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Postretirement benefits | Private equity | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Postretirement benefits | Private equity | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 0 1  
Postretirement benefits | Private equity | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 91 110  
Postretirement benefits | Private equity | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 91 111  
Postretirement benefits | Absolute return | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Postretirement benefits | Absolute return | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 0 4  
Postretirement benefits | Absolute return | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Postretirement benefits | Absolute return | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 51 49  
Postretirement benefits | Absolute return | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 51 53  
Postretirement benefits | Cash and cash equivalents | Level 1 | United States      
Benefit Plan Information      
Fair value of plan assets 14 7  
Postretirement benefits | Cash and cash equivalents | Level 2 | United States      
Benefit Plan Information      
Fair value of plan assets 1 1  
Postretirement benefits | Cash and cash equivalents | Level 3 | United States      
Benefit Plan Information      
Fair value of plan assets 0 0  
Postretirement benefits | Cash and cash equivalents | Investments Measured at Net Asset Value | United States      
Benefit Plan Information      
Fair value of plan assets 29 26  
Postretirement benefits | Cash and cash equivalents | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets 44 34  
Postretirement benefits | Other items to reconcile to fair value of plan assets | Levels 1, 2 and 3 | United States      
Benefit Plan Information      
Fair value of plan assets $ (6) $ (24)