Employee benefit plans and compensation plans (Tables)

12 Months Ended

Dec. 31, 2018

Employee benefit plans and compensation plans

Schedule of breakdown of plan assets

	2018		2017
International equities	11.4	%	18.1	%
Swedish equities	7.5	%	9.8	%
Swedish nominal bonds	40.3	%	32.7	%
Real estate	11.2	%	11.3	%
Private equity	10.4	%	9.7	%
Other	19.2	%	18.4	%

Schedule of reconciliation of beginning and ending funded status and net amounts recognized

(Millions)	2018		2017
Change in benefit obligation
Projected benefit obligation, beginning of year	$	17.4	$	14.9
Service cost		1.0		0.8
Interest cost		0.4		0.3
Actuarial losses		0.6		0.4
Benefit payments		(0.4)		(0.5)
Tax payments		(0.2)		(0.2)
Currency revaluation effect		(1.3)		1.7
Projected benefit obligation, end of year		17.5		17.4
Change in plan assets
Fair value of plan assets, beginning of year		16.1		11.6
Employer contributions		1.2		0.9
Benefit payments		(0.3)		(0.3)
Interest income		0.8		2.5
Currency revaluation effect		(1.4)		1.4
Fair value of plan assets, end of year		16.4		16.1
Funded status at end of year(1)	$	(1.1)	$	(1.3)

(1) At December 31, 2018, the Swedish plan had a funding status of $3.0 and the German plan had a funding status of $(4.1). At December 31, 2017, the Swedish plan had a funding status of $3.1 and the German plan had a funding status of $(4.4).

Schedule of components of net periodic pension expense

(Millions)	2018		2017		2016
Service cost	$	(1.2)	$	(0.8)	$	(0.9)
Interest cost		0.1		2.2		—
Actuarial (loss)		(0.8)		(0.3)		(0.9)
Net periodic pension expense	$	(1.9)	$	1.1	$	(1.8)

Schedule of projected benefit payments required for defined pension benefit plans

(Millions)	December 31, 2018
2019	$	0.4
2020		0.4
2021		0.4
2022		0.4
2023		0.4
2024-2028		2.9
Total benefit payments required	$	4.9

Sweden

Employee benefit plans and compensation plans

Schedule of assumptions used to determine benefit obligations

	2018		2017
Discount rate	2.5	%	2.5	%
Increase in compensation levels rate	3.2	%	3.2	%
Turnover rate	3.0	%	3.0	%

Germany

Employee benefit plans and compensation plans

Schedule of assumptions used to determine benefit obligations

	2018		2017
Discount rate	1.7	%	1.7	%
Increase in compensation levels rate	2.0	%	2.0	%