Employee Benefits Schedule of Net Benefit Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1	$ 2
Interest cost on benefit obligation	2	2	2
Expected return on plan assets	(1)	(2)	(2)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0	0	(1)
Amortization of net actuarial loss	(1)	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	(1)	(11)
Net periodic benefit cost	0	(10)	1
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	10	17	19
Interest cost on benefit obligation	37	28	27
Expected return on plan assets	(43)	(46)	(45)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(1)	(2)	0
Amortization of net actuarial loss	0	15	22
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	0	0	0
Net periodic benefit cost	3	12	23
Non Qualified Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0
Interest cost on benefit obligation	1	1	1
Expected return on plan assets	0	0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0	0	0
Amortization of net actuarial loss	1	1	1
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	0	0	0
Net periodic benefit cost	$ 2	$ 2	$ 2