v3.25.4
Employee Benefit Plans - Accumulated Other Comprehensive Income and Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Net periodic benefit income:      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other comprehensive income (loss) Other comprehensive income (loss) Other comprehensive income (loss)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other comprehensive income (loss) Other comprehensive income (loss) Other comprehensive income (loss)
Interest cost $ 68 $ 72 $ 74
Expected return on plan assets (77) (98) (92)
Amortization of actuarial loss 3 1 0
Net periodic benefit income (6) (25) (18)
Amounts recognized in Other comprehensive income (loss):      
Actuarial loss (gain) (26) 23 32
Prior-service cost 0 (3) 0
Amortization of actuarial loss (3) (1) 0
Loss (gain) recognized in Other comprehensive income (loss) $ (28) $ 19 $ 32
Qualified Plans      
Defined Benefit Plan, Assumptions Used in Calculations      
Discount rate - net periodic benefit costs 5.33% 5.08% 5.36%
Discount rate - benefit obligations 5.40% 5.63% 5.15%
Expected long-term rate of return on plan assets 5.75% 6.75% 6.40%
Non-Qualified Plans | Minimum      
Defined Benefit Plan, Assumptions Used in Calculations      
Discount rate - net periodic benefit costs 4.99% 5.02% 5.26%
Discount rate - benefit obligations 4.60% 5.21% 4.98%
Non-Qualified Plans | Maximum      
Defined Benefit Plan, Assumptions Used in Calculations      
Discount rate - net periodic benefit costs 5.25% 5.05% 5.33%
Discount rate - benefit obligations 5.20% 5.55% 5.12%