Pension Benefits (Details) - UNITED STATES - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 1	$ 2	$ 3	$ 5
Interest cost		10	8	31	24
Expected return on plan assets		(12)	(11)	(37)	(34)
Amortization of net loss		0	3	(1)	8
Amortization of prior service cost		0	1	1	4
Net periodic benefit cost		(1)	3	(3)	7
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	[1]	$ 0	$ 2	$ 0	$ 2

[1] Loss is a result of settlement transactions which exceeded the sum of annual service and interest costs for the applicable plan. This loss was recorded in Other pension (income) expense.