Employee benefit plans (Tables)

3 Months Ended

Mar. 31, 2020

Employee benefit plans

Summary of the components of net periodic benefit cost

	Three Months Ended March 31,
	Pension
	2020		2019
Interest cost		4		5
Expected return on plan assets		(6)		(6)
Expenses paid		1		1
Net periodic benefit cost	$	(1)	$	—