Employee Benefit Plans (Paid Benefit Obligations and Accumulated Benefit Obligations in Excess of Fair Value) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accumulated benefit obligation [Abstract]
Projected benefit obligations	$ 1,376	$ 1,459
Accumulated benefit obligations	1,337	1,411
Estimated fair value of plan assets	2	2
Defined Benefit Plan, Plan with Accumulated Postretirement Benefit Obligation in Excess of Plan Assets, Accumulated Postretirement Benefit Obligation	549	580
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligations	1,388	1,474
Accumulated benefit obligations	1,337	1,411
Estimated fair value of plan assets	12	15
Defined Benefit Plan, Plan with Accumulated Postretirement Benefit Obligation in Excess of Plan Assets, Plan Assets	$ 244	$ 266