Pension Benefits (Details) - UNITED STATES - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1
Interest cost	11	10
Expected return on plan assets	(13)	(12)
Net periodic benefit cost	$ (1)	$ (1)