Employee Benefit Plans (Schedule of Plan with ABO in Excess of Plan Assets) (Details) - Pension Plan [Member] - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 3,675	$ 22,116
Accumulated benefit obligation	3,645	22,080
Fair value of plan assets	$ 1,733	$ 17,747