Employee Benefit Plans and Postretirement Benefits - Projected Benefit Obligations in Excess of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 724	$ 753
Pension
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	908	1,091
Fair value of plan assets	724	836
Healthcare
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	187	179
Fair value of plan assets	60	58
Other
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	81	100
Fair value of plan assets	$ 0	$ 0