Employment Benefit Plans Change in Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Net pension assets included in other current liabilities	$ 11	$ 10
Net pension assets included in other assets	752	947
Pension Benefits
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of period	3,170	2,916
Actual return (loss) on plan assets	(681)	392
Employer contributions	11	10
Benefits paid	(141)	(142)
Settlements	(4)	(6)
Fair value of plan assets at measurement date	2,355	3,170
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Funded status (plan assets less projected benefit obligations)	$ 677	$ 848