Employee Benefits - Net Periodic Benefit (Expense) Income for Defined Benefit Pension Plans and Other Post-employment Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Retirement Benefits [Abstract]
Service cost	$ (1)	$ (1)	$ (1)	$ (1)
Interest cost	(12)	(16)	(25)	(37)
Expected return on plan assets	9	14	20	35
Amortization of actuarial gains			1
Ongoing net periodic benefit cost	(4)	(3)	(5)	(3)
Income due to settlements				10
Total net periodic benefit (expense) income	$ (4)	$ (3)	$ (5)	$ 7