Employee Pension and Other Postretirement Benefits Schedule of Defined Benefit Plans Discolsures (Table) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		$ 8,460
Fair value of plan assets at end of year		6,781	$ 8,460
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Pension plan assets		600	281
Pension Benefits [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year		8,569	8,706
Service cost		181	199	$ 180
Interest cost		258	240	258
Plan participants' contributions		6	7
Plan amendments		97
Actuarial loss (gain)		(2,327)	(292)
Benefits paid		(314)	(291)
Settlement		(32)
Benefit obligation at end of year		6,438	8,569	8,706
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		8,460	7,710
Actual return on plan assets		(1,349)	965
Employer contributions		10	69
Plan participants' contributions		6	7
Benefits paid		(314)	(291)
Settlement		(32)
Fair value of plan assets at end of year		6,781	8,460	7,710
Funded status		343	(109)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Pension plan assets		600	281
Current liability	[1]	(43)	(39)
Non-current liability	[2]	(214)	(351)
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax [Abstract]
Prior service costs (credits)		156	80
Net actuarial loss (gain)		780	1,197
Other Benefits [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year		505	534
Service cost		9	10	9
Interest cost		14	14	17
Plan participants' contributions		11	11
Plan amendments			(14)
Actuarial loss (gain)		(103)	(2)
Benefits paid		(42)	(48)
Benefit obligation at end of year		394	505	$ 534
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Employer contributions		31	37
Plan participants' contributions		11	11
Benefits paid		(42)	(48)
Funded status		(394)	(505)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Current liability	[1]	(134)	(137)
Non-current liability	[2]	(260)	(368)
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax [Abstract]
Prior service costs (credits)		(16)	(20)
Net actuarial loss (gain)		$ (102)	$ (3)

[1] Included in other current liabilities and current portion of postretirement plan liabilities, respectively.

[2] Included in pension plan liabilities and other postretirement plan liabilities, respectively.