v3.26.1
Employee Benefit Plans - Defined Benefit Plans Measured Using Significant Unobservable Inputs Level 3 (Details) - Pension Plan - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning $ 5,627  
Fair value of plan assets - ending 6,433 $ 5,627
U.S.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 1,407 1,528
Fair value of plan assets - ending 1,845 1,407
U.S. | Real estate    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 35  
Fair value of plan assets - ending 55 35
U.S. | Private equity/venture capital    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 167  
Fair value of plan assets - ending 158 167
U.S. | Guaranteed Insurance Contracts    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 0  
Fair value of plan assets - ending 0 0
U.S. | Level 3    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 24  
Fair value of plan assets - ending 23 24
U.S. | Level 3 | Real estate    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 24 47
Purchases 0 0
Sales (2) (22)
Unrealized losses 1 (1)
Acquisition 0  
Currency translation 0 0
Fair value of plan assets - ending 23 24
U.S. | Level 3 | Private equity/venture capital    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 0  
Fair value of plan assets - ending 0 0
U.S. | Level 3 | Guaranteed Insurance Contracts    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 0  
Fair value of plan assets - ending 0 0
Non-U.S.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 4,220 4,662
Fair value of plan assets - ending 4,588 4,220
Non-U.S. | Real estate    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 118  
Fair value of plan assets - ending 114 118
Non-U.S. | Private equity/venture capital    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 258  
Fair value of plan assets - ending 45 258
Non-U.S. | Guaranteed Insurance Contracts    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 2,184  
Fair value of plan assets - ending 2,498 2,184
Non-U.S. | Level 3    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 2,271 2,591
Purchases 0 1
Sales 0 (3)
Unrealized losses (11) (269)
Acquisition 131  
Currency translation 177 (49)
Fair value of plan assets - ending 2,568 2,271
Non-U.S. | Level 3 | Real estate    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 87 106
Purchases 0 0
Sales 0 0
Unrealized losses (31) (12)
Acquisition 0  
Currency translation 14 (7)
Fair value of plan assets - ending 70 87
Non-U.S. | Level 3 | Private equity/venture capital    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 0 4
Purchases 0 0
Sales 0 0
Unrealized losses 0 (4)
Acquisition 0  
Currency translation 0 0
Fair value of plan assets - ending 0 0
Non-U.S. | Level 3 | Guaranteed Insurance Contracts    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value of plan assets - beginning 2,184 2,481
Purchases 0 1
Sales 0 (3)
Unrealized losses 20 (253)
Acquisition 131  
Currency translation 163 (42)
Fair value of plan assets - ending $ 2,498 $ 2,184