Pension Benefits (Tables)

6 Months Ended

Jun. 30, 2021

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost associated with our U.S. pension plans are as follows:

	Quarter ended				Year to date
	2021		2020		2021		2020
Service cost	$	2	$	2	$	4	$	4
Interest cost	8		8		16		17
Expected return on plan assets	(10)		(11)		(21)		(22)
Amortization of net loss	3		3		9		7
Amortization of prior service cost	2		2		3		3
Net periodic benefit cost	$	5	$	4	$	11	$	9