Defined benefit and 401(k) savings plan (Tables)

12 Months Ended

Dec. 31, 2019

Retirement Benefits [Abstract]

Summary of Funded Status of the Swiss Plan

The funded status of the Swiss Plan is as follows:

(in millions)	December 31, 2019			December 31, 2018
Fair value of plan assets, beginning of year	$	18.2		$	—
Acquisitions	—			18.2
Employer contributions	1.0			0.2
Employee contributions	0.7			0.1
Net benefits received (paid)	1.7			0.3
Actual return on plan assets	1.7			—
Settlements	(3.0		)	(0.6		)
Currency impact	0.3			—
Fair value of plan assets, end of year	$	20.6		$	18.2
Projected benefit obligation, beginning of year	$	28.6		$	—
Acquisitions	—			28.3
Service cost	1.3			0.3
Interest Cost	0.2			0.1
Employee contributions	0.7			0.1
Actuarial loss	7.0			0.3
Net benefits received (paid)	1.7			(0.1		)
Plan amendment	(1.7		)	0.1
Settlements	(3.0		)	(0.6		)
Currency impact	0.4			0.1
Projected benefit obligation, end of year	$	35.3		$	28.6
Funded status, end of year	$	(14.7	)	$	(10.4	)
Accumulated benefit obligation, end of year	$	31.0		$	25.6

Components of Net Periodic Pension Cost

Components of net periodic pension cost incurred during the year are as follows:

(in millions)	December 31, 2019			December 31, 2018
Service cost	$	1.3		$	0.3
Interest cost	0.2			0.1
Expected return on plan assets	(0.5		)	(0.1		)
Net periodic benefit cost	$	1.0		$	0.3

Schedule of Weighted Average Assumptions

The weighted average assumptions used to calculate the projected benefit obligations are as follows:

	December 31, 2019		December 31, 2018
Discount rate	0.2	%	0.9	%
Expected rate of return	3.0	%	3.0	%
Rate of future compensation increases	1.5	%	1.5	%

Schedule of Accumulated Other Comprehensive Loss Before Income Tax

The following table presents losses recognized in accumulated other comprehensive loss before income tax related to the Company’s defined benefit pension plans:

(in millions)	Year Ended December 31, 2019			Year Ended December 31, 2018
Net actuarial loss	$	5.4		$	0.1
Prior service cost	(1.7		)	0.1
Total recognized in accumulated other comprehensive loss	$	3.7		$	0.2

Schedule of Expected Future Benefits Payments

Future benefits expected to be paid as of December 31, 2019 are as follows:

(In millions)	December 31, 2019
2020	$	1.0
2021	1.0
2022	1.5
2023	1.0
2024	1.0
Thereafter	6.6
Total	$	12.1