Employee Benefit Plans and Postretirement Benefits - Projected Benefit Obligations in Excess of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 656	$ 1,102
Pension
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	969	1,607
Fair value of plan assets	733	1,198
Healthcare
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	181	281
Fair value of plan assets	58	130
Other
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	89	113
Fair value of plan assets	$ 0	$ 0