Pension - Projected Benefit Obligations and Assets (Details) - Pension Plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Change in benefit obligation
Benefit obligation, January 1	$ 5,223	$ 5,600
Service cost	2	2	$ 2
Interest cost	140	132	168
Actuarial (gains), net	(1,094)	(189)
Benefits paid from plan assets	(296)	(304)
Other	(27)	(18)
Benefit obligation, December 31	3,948	5,223	5,600
Change in plan assets
Fair value of plan assets, January 1	4,846	4,623
Actual return on plan assets	(366)	522
Benefits paid	(296)	(304)
Contributions	2	5
Fair value of plan assets, December 31	4,186	4,846	$ 4,623
Funded status	238	(377)
Amounts presented in Consolidated Balance Sheets
Other assets	238	0
Accrued expenses and other liabilities	0	(14)
Other non-current liabilities	$ 0	$ (363)