Retirement Benefits (Tables)

9 Months Ended

Sep. 30, 2022

Retirement Benefits [Abstract]

Summary of Net Benefit Costs

The following table summarizes net periodic benefit cost (income) relating to our defined benefit pension plans:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Service cost	$	4	$	4	$	11	$	14
Interest cost	1		1		3		2
Expected return on plan assets	(2)		(2)		(5)		(5)
Amortization of prior service cost	(1)		(1)		(3)		(5)
Amortization of net actuarial loss	—		—		—		1
Net curtailments and settlements (Note 6)	—		(9)		—		(26)
Net periodic benefit cost (income)	$	2	$	(7)	$	6	$	(19)