Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2019

Compensation And Retirement Disclosure [Abstract]

Schedule of Components of Period Benefit Costs

The components of periodic benefit costs for the years ended December 31, 2019, 2018 and 2017 are as follows:

	US Pension Plans									Non-US Pension Plans									Postretirement Medical and Other
	2019			2018			2017			2019			2018			2017			2019			2018			2017
Service cost - benefits earned    during the year	$	—		$	—		$	—		$	1.8		$	1.8		$	1.9		$	0.2		$	0.2		$	0.3
Interest cost of projected    benefit obligation		5.1			5.2			5.3			2.2			2.1			2.1			0.8			0.8			1.0
Expected return on assets		(4.3	)		(5.7	)		(4.9	)		(1.4	)		(1.4	)		(1.5	)		—			—			—
Amortization of prior service    cost		—			—			—			0.1			0.1			0.1			(2.8	)		(2.8	)		(1.4	)
Amortization of actuarial net    loss (gain)		3.3			2.9			3.2			1.3			1.3			1.6			—			0.8			0.4
Pension settlement charge		—			4.5			—			—			—			—			—			—			—
Net periodic benefit cost	$	4.1		$	6.9		$	3.6		$	4.0		$	3.9		$	4.2		$	(1.8	)	$	(1.0	)	$	0.3
Weighted average    assumptions:
Discount rate		4.3	%		3.8	%		4.2	%		2.5	%		2.2	%		2.1	%		4.1	%		3.3	%		3.8	%
Expected return on plan assets		5.2	%		5.3	%		4.7	%		3.5	%		2.7	%		3.4	%	N/A			N/A			N/A
Rate of compensation    increase	N/A			N/A			N/A				3.6	%		3.5	%		2.6	%	N/A			N/A			N/A

Reconciliation of the Changes in Benefit Obligation, the Changes in Plan Assets, and the Funded Status

The following is a reconciliation of the changes in benefit obligation, plan assets, and funded status as of December 31, 2019 and 2018:

	US Pension Plans						Non-US Pension Plans						Postretirement Medical and Other
	2019			2018			2019			2018			2019			2018
Change in Benefit Obligation
Benefit obligation, beginning of year	$	130.5		$	162.3		$	81.9		$	89.5		$	20.7		$	28.9
Service cost		—			—			1.8			1.8			0.2			0.2
Interest cost		5.1			5.2			2.2			2.1			0.8			0.8
Participant contributions		—			—			—			—			0.4			0.7
Plan amendments		—			—			—			—			—			—
Actuarial (gain) loss		13.8			(9.2	)		8.3			(3.0	)		(1.5	)		(7.2	)
Currency translation adjustment		—			—			1.1			(4.6	)		—			—
Pension settlement		—			(18.9	)		—			—			—			—
Benefits paid		(7.1	)		(8.8	)		(4.7	)		(3.9	)		(2.2	)		(2.7	)
Benefit obligation, end of year	$	142.3		$	130.5		$	90.6		$	81.9		$	18.4		$	20.7
Change in Plan Assets
Fair value of plan assets, beginning of year	$	84.9		$	116.2		$	40.1		$	45.1		$	—		$	—
Actual return on plan assets		16.8			(8.9	)		4.2			(1.4	)		—			—
Employer contributions		5.0			5.3			4.0			2.8			1.8			2.0
Participant contributions		—			—			—			—			0.4			0.7
Currency translation adjustment		—			—			1.6			(2.5	)		—			—
Pension settlement		—			(18.9	)		—			—			—			—
Benefits paid		(7.1	)		(8.8	)		(4.7	)		(3.9	)		(2.2	)		(2.7	)
Fair value of plan assets, end of year		99.6			84.9			45.2			40.1			—			—
Funded status	$	(42.7	)	$	(45.6	)	$	(45.4	)	$	(41.8	)	$	(18.4	)	$	(20.7	)
Amounts recognized in the Consolidated    Balance sheet at December 31
Pension asset	$	—		$	—		$	—		$	—		$	—		$	—
Pension obligation		(42.7	)		(45.6	)		(45.4	)		(41.8	)		—			—
Postretirement medical and other benefit    obligations		—			—			—			—			(18.4	)		(20.7	)
Net amount recognized	$	(42.7	)	$	(45.6	)	$	(45.4	)	$	(41.8	)	$	(18.4	)	$	(20.7	)
Weighted-Average Assumptions
Discount rate		3.3	%		4.3	%		1.5	%		2.2	%		2.9	%		4.1	%
Expected return on plan assets		5.2	%		5.3	%		3.5	%		2.7	%	N/A			N/A
Rate of compensation increase	N/A			N/A				3.6	%		3.5	%	N/A			N/A

Amounts Recognized in Accumulated Other Comprehensive Loss

Amounts recognized in accumulated other comprehensive loss as of December 31, 2019 and 2018, are summarized as follows:

	Pensions						Postretirement Medical and Other
	2019			2018			2019		2018
Net actuarial gain (loss)	$	(61.9	)	$	(59.3	)	$	1.9	$	0.4
Prior service credit (cost)		(0.5	)		(0.5	)		6.9		9.7
Total amount recognized	$	(62.4	)	$	(59.8	)	$	8.8	$	10.1

Summary of the Sensitivity of Retirement Obligations and Retirement Benefit Costs of Plans to Changes in the Key Assumptions

The following table summarizes the sensitivity of our December 31, 2019 retirement obligations and 2020 retirement benefit costs of our plans to changes in the key assumptions used to determine those results:

Change in assumption:	Estimated increase (decrease) in 2020 pension cost			Estimated increase (decrease) in Projected Benefit Obligation for the year ended December 31, 2019			Estimated decrease in 2020 Other Postretirement Benefit costs			Estimated increase (decrease) in Other Postretirement Benefit Obligation for the year ended December 31, 2019
0.50% increase in discount rate	$	(0.8	)	$	(14.3	)	N/A			$	(0.6	)
0.50% decrease in discount rate		0.9			15.7			(0.1	)		0.6
0.50% increase in long-term return on assets		(0.7	)	N/A			N/A			N/A
0.50% decrease in long-term return on assets		0.7		N/A			N/A			N/A
1% increase in medical trend rates	N/A			N/A			N/A				0.7
1% decrease in medical trend rates	N/A			N/A				(0.1	)		(0.6	)

Schedule of the Weighted-Average Asset Allocations of the Pension Plans

The weighted-average asset allocations of the U.S. pension plans as of December 31, 2019 and 2018, by asset category are as follows:

	2019			2018
Equity		50.4	%		47.8	%
Fixed income		48.9	%		51.4	%
Other		0.7	%		0.8	%
Total		100.0	%		100.0	%

The weighted-average asset allocations of the Non-U.S. pension plans as of December 31, 2019 and 2018, by asset category are as follows:

	2019			2018
Equity		0.0	%		36.1	%
Fixed income		31.9	%		31.6	%
Other*		68.1	%		32.3	%
Total		100.0	%		100.0	%
*Includes diversified investments that have equity and    fixed income holdings.

Schedule of the Actual Allocations for the Pension Assets and Target Allocations by Asset Class

The actual and target allocations for the pension assets as of December 31, 2019, by asset class, are as follows:

	Target Allocations						Weighted Average Asset Allocations
	U.S. Plans			Non-U.S. Plans			U.S. Plans			Non-U.S. Plans
Equity Securities		50	%		—	%		50.4	%		0.0	%
Debt Securities		50	%	40%				48.9	%		31.9	%
Other		—	%	60%				0.7	%		68.1	%

Schedule of Plan Assets Using the Fair Value Hierarchy

The following table presents the Company’s plan assets using the fair value hierarchy as of December 31, 2019 and 2018. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant non-observable inputs.

	December 31, 2019
Assets	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)		Net Asset Value ("NAV")		Total
Cash and cash equivalents	$	2.4	$	—	$	—	$	—	$	2.4
Insurance group annuity contracts		—		—		12.6		—		12.6
Common/collective trust funds — Corporate and    other non-government debt		—		—		—		22.9		22.9
Common/collective trust funds — Government,    corporate and other non-government debt		—		—		—		40.2		40.2
Common/collective trust funds — Corporate equity		—		—		—		50.3		50.3
Common/collective trust funds — Customized strategy		—		—		—		16.4		16.4
Total	$	2.4	$	—	$	12.6	$	129.8	$	144.8

	December 31, 2018
Assets	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)		Net Asset Value ("NAV")		Total
Cash and cash equivalents	$	1.7	$	—	$	—	$	—	$	1.7
Insurance group annuity contracts		—		—		12.0		—		12.0
Common/collective trust funds — Government,    corporate and other non-government debt		—		—		—		56.3		56.3
Common/collective trust funds — Corporate equity		—		—		—		55.0		55.0
Total	$	1.7	$	—	$	12.0	$	111.3	$	125.0

Reconciliation of the Fair Values Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3) from the Beginning of the Year to the End of the Year

A reconciliation of the fair value measurements of plan assets using significant unobservable inputs (Level 3) from the beginning of the year to the end of the year is as follows:

	Insurance Contracts Year Ended December 31,
	2019			2018
Beginning Balance	$	12.0		$	14.4
Actual return on assets		1.1			(0.3	)
Benefit payments		(1.0	)		(1.3	)
Foreign currency impact		0.5			(0.8	)
Ending Balance	$	12.6		$	12.0

Schedule of Projected Future Benefit Payments from the Plans

Projected future benefit payments from the plans as of December 31, 2019 are estimated as follows:

	U.S Pension Plans		Non-U.S. Pension Plans		Postretirement Medical and Other
2020	$	8.5	$	3.1	$	2.1
2021		8.6		2.9		2.0
2022		8.7		3.1		1.9
2023		8.8		3.5		1.8
2024		8.8		3.6		1.7
Thereafter		43.0		21.1		6.6
Total	$	86.4	$	37.3	$	16.1

Schedule of Fair Value of Plan Assets for which the Accumulated Benefit Obligation is in Excess of Plan Assets

The fair value of plan assets for which the accumulated benefit obligation is in excess of the plan assets as of December 31, 2019 and 2018 is as follows:

	U.S Pension Plans				Non U.S. Pension Plans
	2019		2018		2019		2018
Projected benefit obligation	$	142.3	$	130.5	$	90.5	$	81.9
Accumulated benefit obligation		142.3		130.5		86.4		78.1
Fair value of plan assets		99.6		84.9		45.2		40.1