Pension Benefits (Details) - UNITED STATES - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1	$ 2	$ 2
Interest cost	10	11	21	21
Expected return on plan assets	(13)	(13)	(26)	(25)
Amortization of net loss	1	(1)	1	(1)
Amortization of prior service cost	1	1	1	1
Net periodic benefit cost	$ 0	$ (1)	$ (1)	$ (2)