Benefit Obligations - Schedule of Net Periodic Benefit Costs Recognized (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 4
Interest cost	31	32
Expected return on plan assets	(34)	(33)
Total	0	3
Post-retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	1	0
Expected return on plan assets	0	0
Total	$ 1	$ 0