v3.26.1
Employee Benefits - Plans ABO in Excess of Plan Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]    
ABO $ 822 $ 845
Cash Balance Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
PBO 705 725
ABO 705 725
Fair value of plan assets 790 805
Other Defined Benefit Plans    
Defined Benefit Plan Disclosure [Line Items]    
PBO 117 121
ABO 117 121
Fair value of plan assets $ 0 $ 0