Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2018

Retirement Benefits [Abstract]

Schedule of Changes in Projected Benefit Obligation and Plan Assets, and Net Funded Status

The benefit obligations and plan assets, changes to the benefit obligations and plan assets, and the funded status of the defined benefit pension plans were as follows:

	United States						Germany
	As of December 31,						As of December 31,
	2018			2017			2018			2017
	(In millions)
Change in benefit obligation
Benefit obligation, beginning of year	$	63.7		$	64.9		$	26.8		$	24.1
Interest cost		2.2			2.5			0.4			0.4
Actuarial (gain) loss		(2.0	)		2.5			(0.3	)		(0.1	)
Benefits paid		(2.5	)		(2.5	)		(1.0	)		(1.0	)
Settlement payments		(1.8	)		(3.7	)		—			—
Foreign exchange rate changes		—			—			(1.3	)		3.4
Projected benefit obligation, end of year	$	59.6		$	63.7		$	24.6		$	26.8
Change in plan assets
Fair value of plan assets, beginning of year	$	48.8		$	49.8		$	17.5		$	15.2
Actual return on plan assets		(2.2	)		4.8			0.3			1.1
Foreign exchange rate changes		—			—			(0.8	)		2.1
Company contributions		0.8			0.4			—			0.1
Benefits paid		(2.5	)		(2.5	)		(1.0	)		(1.0	)
Settlement payments		(1.8	)		(3.7	)		—			—
Fair value of plan assets, end of year		43.1			48.8			16.0			17.5
Funded status of the plan, end of year	$	(16.5	)	$	(14.9	)	$	(8.6	)	$	(9.3	)

Schedule of Amounts Recognized in Balance Sheet

Amounts recognized in our Consolidated Balance Sheets consisted of the following:

	United States						Germany
	As of December 31,						As of December 31,
	2018			2017			2018			2017
	(In millions)
Current liabilities		(2.1	)		—			—			—
Noncurrent liabilities		(14.4	)		(14.9	)		(8.6	)		(9.3	)
Accumulated other comprehensive loss — pre-tax		—			18.9			8.9			9.8

Schedule of Amounts Recognized in Other Comprehensive Loss

Pre-tax amounts recognized in accumulated other comprehensive loss consisted of the following:

	United States				Germany
	As of December 31,				As of December 31,
	2018		2017		2018		2017
	(In millions)
Net actuarial loss	$	21.8	$	18.9	$	8.9	$	9.8
Total	$	21.8	$	18.9	$	8.9	$	9.8

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets

The following table includes information for pension plans with an accumulated benefit obligation in excess of plan assets.

	United States				Germany
	As of December 31,				As of December 31,
	2018		2017		2018		2017
	(In millions)
Projected benefit obligation, end of year	$	59.6	$	63.7	$	24.6	$	26.8
Accumulated benefit obligation, end of year		59.6		63.7		24.6		26.8
Plan assets at fair value, end of year		43.1		48.8		16.0		17.5

Schedule of Net Benefit Costs

Components of net periodic pension cost included the following:

	United States						Germany
	Years Ended December 31,						Years Ended December 31,
	2018			2017			2018			2017
	(In millions)
Interest cost		2.1			2.5			0.4			0.4
Expected return on plan assets		(3.1	)		(3.3	)		(0.6	)		(0.6	)
Amortization of net actuarial loss		0.4			0.3			0.3			0.4
Net periodic pension cost (credit)		(0.6	)		(0.5	)		0.1			0.2
Settlements and curtailments		—			1.1			—			—
Total pension cost	$	(0.6	)	$	0.6		$	0.1		$	0.2

Schedule of Assumptions Used

Assumptions used to determine benefit obligations were as follows:

	United States						Germany
	As of December 31,						As of December 31,
	2018			2017			2018			2017
Discount rate		4.25	%		3.50	%		1.7	%		1.56	%
Rate of compensation increase		—	%		—	%		—	%		—	%

Assumptions used to determine net periodic benefit costs were as follows:

	United States						Germany
	As of December 31,						As of December 31,
	2018			2017			2018			2017
Discount rate		3.5	%		4.00	%		1.7	%		1.56	%
Expected return on plan assets		6.5	%		6.50	%		3.5	%		3.50	%
Rate of compensation increase		—	%		—	%		—	%		—	%

Schedule of Allocation of Plan Assets

The plans’ asset allocations by asset category were as follows:

	United States						International
	As of December 31,						As of December 31,
	2018			2017			2018			2017
Short-term investments		12	%		1	%		—	%		—	%
Fixed income securities		27	%		27	%		—	%		—	%
Equity securities		61	%		72	%		—	%		—	%
Insurance contracts		—	%		—	%		100	%		100	%
Total		100	%		100	%		100	%		100	%

Schedule of Expected Benefit Payments

	United States		International
	(In millions)
2019	$	14.5	$	1.0
2020		4.0		1.0
2021		4.4		1.1
2022		4.0		1.1
2023		4.3		1.1
2022-2026		17.3		5.6

Schedule of Fair Value of Plan Assets

The fair value of the plan assets by asset category were as follows:

United States	December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(In millions)
Short-term investments
Money market securities	$	5.2	$	5.2	$	—	$	—
Mutual Funds
Equity securities
US small cap core *		1.0		—		—		—
Large-cap growth funds *		12.5		—		—		—
Emerging markets *		3.0		—		—		—
International growth fund *		9.7		—		—		—
Common stocks		—		—		—		—
Commingled trust funds *		11.7		—		—		—
Total	$	43.1	$	5.2	$	—	$	—

* In accordance with ASC 820-10, certain investments that are measured at fair value using the net asset value (NAV) per share (or its equivalent) as a practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the fair value of plan assets.

International	December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(In millions)
Insurance contracts		16.0		—		16.0		—
Total	$	16.0	$	—	$	16.0	$	—

United States	December 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(In millions)
Short-term investments
Money market securities	$	0.5	$	0.5	$	—	$	—
Mutual Funds
Equity securities
Large-cap growth funds *		19.0		—		—		—
International growth fund *		15.7		—		—		—
Common stocks		0.6		0.6		—		—
Commingled trust funds *		13.0		—		—		—
Total	$	48.8	$	1.1	$	—	$	—

* In accordance with ASC 820-10, certain investments that are measured at fair value using the net asset value (NAV) per share (or its equivalent) as a practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the fair value of plan assets.

International	December 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(In millions)
Insurance contracts		17.5		—		17.5		—
Total	$	17.5	$	—	$	17.5	$	—