v3.25.4
Employee Benefit Plans - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Funded (unfunded) status of the plan $ 93 $ 54  
Defined benefit plan, net periodic benefit expense 167 195  
Cost for defined contribution retirement plans 59 58 $ 55
Amount not yet recognized in net periodic benefit income (expense) $ 5 7  
Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, target allocation percentage 95.00%    
Defined benefit plan, target allocation percentage to hedge projected liabilities 100.00%    
Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, target allocation percentage 5.00%    
U.S.      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, target allocation within equity securities 60.00%    
Non-US Equity      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, target allocation within equity securities 40.00%    
Postretirement Medical Plan      
Defined Benefit Plan Disclosure [Line Items]      
Funded (unfunded) status of the plan $ (24) (26)  
Amount not yet recognized in net periodic benefit income (expense) (1) $ 1  
Qualified Plans      
Defined Benefit Plan Disclosure [Line Items]      
Funded (unfunded) status of the plan $ 142    
Expected long-term rate of return on plan assets 5.75% 6.75% 6.40%
Discount rate - net periodic benefit costs 5.33% 5.08% 5.36%
Non-Qualified Plans      
Defined Benefit Plan Disclosure [Line Items]      
Funded (unfunded) status of the plan $ (49)    
Employer contributions $ 5    
Minimum | Postretirement Medical Plan      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate - net periodic benefit costs 5.23% 5.04% 5.32%
Minimum | Non-Qualified Plans      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate - net periodic benefit costs 4.99% 5.02% 5.26%
Maximum | Postretirement Medical Plan      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate - net periodic benefit costs 5.64% 5.10% 5.41%
Maximum | Non-Qualified Plans      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate - net periodic benefit costs 5.25% 5.05% 5.33%