Pension Benefits - Components of Net Periodic Benefit Cost (Details) - UNITED STATES - Pension Plan - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 4	$ 4
Interest cost	4	3	3
Expected return on plan assets that reduces periodic pension benefit cost	(3)	(3)	(2)
Amortization of net actuarial loss	0	0	0
Net periodic benefit cost	4	4	5
Settlements	0	0	0
Total net benefit cost	$ 4	$ 4	$ 5