Pension Benefits (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost	$ (1)	$ 2
UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	2
Interest cost	10	8
Expected return on plan assets	(12)	(12)
Amortization of net loss	0	3
Amortization of prior service cost	$ 0	$ 1