v3.25.4
Pension and Postretirement Plans - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, amortization percentage 10.00%    
Actual increase in plan assets $ (1) $ (6)  
Maximum employee contribution of eligible pay (as a percent) 75.00%    
Total expense related to participants in the savings plan $ 163 $ 155 $ 196
Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Target allocations for plan assets (as a percent) 43.00%    
Debt Securities      
Defined Benefit Plan Disclosure [Line Items]      
Target allocations for plan assets (as a percent) 34.00%    
Real Estate Investment      
Defined Benefit Plan Disclosure [Line Items]      
Target allocations for plan assets (as a percent) 10.00%    
Other Types of Investments      
Defined Benefit Plan Disclosure [Line Items]      
Target allocations for plan assets (as a percent) 13.00%    
Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Semi-annual discretionary company contribution target (as a percent)     0.00%
Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Company match of participant's contributions of eligible pay (as a percent) 8.00% 8.00% 8.00%
Semi-annual discretionary company contribution target (as a percent)     4.00%
United States      
Defined Benefit Plan Disclosure [Line Items]      
Expected future employer contributions next fiscal year $ 200    
Pension Benefits | United States      
Defined Benefit Plan Disclosure [Line Items]      
Accumulated benefit obligations 2,298 $ 2,218  
Actuarial loss (gain) $ 104 $ 68  
Weighted-average actual return on plan assets 11.00% 7.00%  
Actual increase in plan assets $ 269 $ 172  
Pension Benefits | Int’l.      
Defined Benefit Plan Disclosure [Line Items]      
Accumulated benefit obligations 552 609  
Actuarial loss (gain) (24) (48)  
Actual increase in plan assets 34 14  
Expected future employer contributions next fiscal year 4    
Other Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Actuarial loss (gain) 1 (8)  
Actual increase in plan assets $ 0 $ 0  
Health care cost trend rate (as a percent) 8.00%    
Health care cost trend rate, ultimate (as a percent) 5.00%