Employee Benefit Plans - Schedule of Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan [Member]
schedule of net funded status [Line Items]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	$ 3,490	$ 4,649
Service cost	3	4	$ 4
Interest cost	180	111	96
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	0	0
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(40)	(18)
Defined Benefit Plan, Changes in Assumptions	108	(1,077)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	218	215
Defined Benefit Plan, Benefit Obligation, Ending Balance	3,603	3,490	4,649
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	3,524	4,482
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	254	(745)
Defined Benefit Plan, Plan Assets, Contributions by Employer	1	0
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	0	0
Defined Benefit Plan, Plan Assets, Benefits Paid	192	189
Defined Benefit Plan, Plan Assets, Administration Expense	14	24
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	3,573	3,524	4,482
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(30)	34
Assets for Plan Benefits, Defined Benefit Plan	293	357
Liability, Defined Benefit Plan	323	323
Pension Plan [Member] | UNITED STATES
schedule of net funded status [Line Items]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	3,156	4,210
Service cost	3	4
Interest cost	163	101
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	0	0
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(38)	(14)
Defined Benefit Plan, Changes in Assumptions	100	(985)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	191	188
Defined Benefit Plan, Benefit Obligation, Ending Balance	3,269	3,156	4,210
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	3,513	4,467
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	254	(742)
Defined Benefit Plan, Plan Assets, Contributions by Employer	0	0
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	0	0
Defined Benefit Plan, Plan Assets, Benefits Paid	191	188
Defined Benefit Plan, Plan Assets, Administration Expense	14	24
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	3,562	3,513	4,467
Defined Benefit Plan, Funded (Unfunded) Status of Plan	293	357
Assets for Plan Benefits, Defined Benefit Plan	293	357
Liability, Defined Benefit Plan	0	0
Other Pension Plan
schedule of net funded status [Line Items]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	334	439
Service cost	0	0
Interest cost	17	10
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	0	0
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(2)	(4)
Defined Benefit Plan, Changes in Assumptions	8	(92)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	27	27
Defined Benefit Plan, Benefit Obligation, Ending Balance	334	334	439
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	11	15
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	0	(3)
Defined Benefit Plan, Plan Assets, Contributions by Employer	1	0
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	0	0
Defined Benefit Plan, Plan Assets, Benefits Paid	1	1
Defined Benefit Plan, Plan Assets, Administration Expense	0	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	11	11	15
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(323)	(323)
Assets for Plan Benefits, Defined Benefit Plan	0	0
Liability, Defined Benefit Plan	323	323
Other Postretirement Benefits Plan [Member]
schedule of net funded status [Line Items]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	143	197
Service cost	0	0	0
Interest cost	7	4	3
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	8	10
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(3)	5
Defined Benefit Plan, Changes in Assumptions	3	(33)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	26	30
Defined Benefit Plan, Benefit Obligation, Ending Balance	138	143	197
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	30	51
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	1	(6)
Defined Benefit Plan, Plan Assets, Contributions by Employer	5	5
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	8	10
Defined Benefit Plan, Plan Assets, Benefits Paid	26	30
Defined Benefit Plan, Plan Assets, Administration Expense	0	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	18	30	$ 51
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(120)	(113)
Assets for Plan Benefits, Defined Benefit Plan	0	0
Liability, Defined Benefit Plan	$ 120	$ 113