XML 228 R206.htm IDEA: XBRL DOCUMENT v3.24.0.1
Employee Benefit Plans (Paid Benefit Obligations and Accumulated Benefit Obligations in Excess of Fair Value) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Accumulated benefit obligation [Abstract]    
Projected benefit obligations $ 1,459 $ 1,434
Accumulated benefit obligations 1,411 1,384
Estimated fair value of plan assets 2 0
Defined Benefit Plan, Plan with Accumulated Postretirement Benefit Obligation in Excess of Plan Assets, Accumulated Postretirement Benefit Obligation 580 562
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]    
Projected benefit obligations 1,474 1,444
Accumulated benefit obligations 1,411 1,384
Estimated fair value of plan assets 15 10
Defined Benefit Plan, Plan with Accumulated Postretirement Benefit Obligation in Excess of Plan Assets, Plan Assets $ 266 $ 276