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

12 Months Ended

Dec. 31, 2018

Defined benefit and 401(k) savings plan [Abstract]

Benefit Obligations, Fair Value of Plan Assets and Funded Status

The funded status of the Swiss Plan is as follows:

	December 31,
(in millions)	2018
Fair value of plan assets, beginning of year	$	—
Acquisitions		18.2
Employer contributions		0.2
Employee contributions		0.1
Benefits paid		0.3
Actual administration expenses		—
Actual return on plan assets		—
Settlements		(0.6	)
Currency impact		—
Fair value of plan assets, end of year		18.2
Projected Benefit Obligation, beginning of year	$	—
Acquisitions		28.3
Service cost		0.3
Interest Cost		0.1
Employee contributions		0.1
Actuarial loss		0.3
Benefits paid (refunded)		(0.1	)
Actual administration expenses, taxes		—
Plan amendment		0.1
Settlements		(0.6	)
Currency impact		0.1
Projected benefit obligation, end of year	$	28.6
Funded status, end of year	$	(10.4	)
Accumulated benefit obligation, end of year	$	25.6

Since assets exceed the present value of expected benefit payments for the next twelve months, all of the liability is noncurrent.

Net Periodic Pension Cost

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

	December 31,
(in millions)	2018
Service cost	$	0.3
Interest cost		0.1
Expected return on plan assets		(0.1	)
Amortization of loss		—
Amortization of prior service cost		—
Net periodic benefit cost	$	0.3

Weighted Average Assumptions

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

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

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:

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

Future Benefits Expected to be Paid

Future benefits expected to be paid as of December 31, 2018 are as follows:

(In millions)	December 31, 2018
2019	$	1.0
2020		2.0
2021		0.8
2022		1.4
2023		0.9
Thereafter		5.8
Total	$	11.9