Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

Schedule of Components of Period Benefit Costs

The components of periodic benefit costs for the years ended December 31, 2021, 2020 and 2019 are as follows:

	US Pension Plans									Non-US Pension Plans									Postretirement Medical and Other
	2021			2020			2019			2021			2020			2019			2021			2020			2019
Service cost - benefits earned    during the year	$	—		$	—		$	—		$	2.3		$	2.1		$	1.8		$	0.1		$	0.2		$	0.2
Interest cost of projected    benefit obligation		2.8			4.0			5.1			1.5			1.8			2.2			0.2			0.4			0.8
Expected return on assets		(4.9	)		(5.2	)		(4.3	)		(1.0	)		(1.1	)		(1.4	)		—			—			—
Amortization of prior service    cost		—			—			—			0.1			0.1			0.1			(2.7	)		(2.7	)		(2.8	)
Amortization of actuarial net    loss (gain)		3.2			2.8			3.3			1.8			1.7			1.3			(0.3	)		—			—
Pension settlement charge    (gain) loss		—			—			—			(0.9	)		—			—			—			—			—
Net periodic benefit cost	$	1.1		$	1.6		$	4.1		$	3.8		$	4.6		$	4.0		$	(2.7	)	$	(2.1	)	$	(1.8	)
Weighted average    assumptions:
Effective discount rate for    benefit obligations		2.4	%		3.3	%		4.3	%		1.2	%		1.6	%		2.5	%		2.0	%		2.9	%		4.1	%
Effective interest rate on    benefit obligation		2.0	%		2.9	%		4.0	%		1.2	%		1.6	%		2.5	%		1.3	%		2.6	%		3.7	%
Expected return on    plan assets		4.3	%		5.2	%		5.2	%		1.6	%		2.3	%		3.5	%	N/A			N/A			N/A
Rate of compensation    increase	N/A			N/A			N/A				4.1	%		3.1	%		3.6	%	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, 2021 and 2020:

	US Pension Plans					Non-US Pension Plans						Postretirement Medical and Other
	2021			2020		2021			2020			2021			2020
Change in Benefit Obligation
Benefit obligation, beginning of year	$	151.9		$	142.3	$	104.9		$	90.6		$	15.8		$	18.4
Service cost		—			—		2.3			2.1			0.1			0.2
Interest cost		2.8			4.0		1.5			1.8			0.2			0.4
Participant contributions		—			—		—			—			0.3			0.3
Plan curtailment		—			—		(0.3	)		(0.1	)		—			—
Actuarial (gain) loss		(5.4	)		13.4		(3.7	)		9.7			(1.0	)		(1.3	)
Currency translation adjustment		—			—		(4.2	)		5.3			—			—

Pension settlement		—			—			(1.9	)		—			—			—
Benefits paid		(8.1	)		(7.8	)		(4.1	)		(4.5	)		(1.7	)		(2.2	)
Benefit obligation, end of year	$	141.2		$	151.9		$	94.5		$	104.9		$	13.7		$	15.8
Change in Plan Assets
Fair value of plan assets, beginning of year	$	113.7		$	99.6		$	52.3		$	45.2		$	—		$	—
Actual return on plan assets		8.5			12.7			0.6			6.0			—			—
Employer contributions		0.5			9.2			3.9			3.9			1.4			1.9
Participant contributions		—			—			—			—			0.3			0.3
Currency translation adjustment		—			—			(0.6	)		1.7			—			—
Pension settlement		—			—			(1.9	)		—			—			—
Benefits paid		(8.1	)		(7.8	)		(4.1	)		(4.5	)		(1.7	)		(2.2	)
Fair value of plan assets, end of year		114.6			113.7			50.2			52.3			—			—
Funded status	$	(26.6	)	$	(38.2	)	$	(44.3	)	$	(52.6	)	$	(13.7	)	$	(15.8	)
Amounts recognized in the Consolidated    Balance Sheets as of December 31
Short-term pension obligation	$	(0.5	)	$	(0.5	)	$	(1.0	)	$	(1.1	)	$	—		$	—
Long-term pension obligation		(26.1	)		(37.7	)		(43.3	)		(51.5	)		—			—
Short-term postretirement medical and other    benefit obligations		—			—			—			—			(1.6	)		(1.8	)
Long-term postretirement medical and other    benefit obligations		—			—			—			—			(12.1	)		(14.0	)
Net amount recognized	$	(26.6	)	$	(38.2	)	$	(44.3	)	$	(52.6	)	$	(13.7	)	$	(15.8	)
Weighted-Average Assumptions
Discount rate		2.8	%		2.4	%		1.4	%		1.1	%		2.5	%		2.0	%
Expected return on plan assets		4.3	%		5.2	%		1.6	%		2.3	%	N/A			N/A
Rate of compensation increase	N/A			N/A				4.1	%		3.1	%	N/A			N/A

Amounts Recognized in Accumulated Other Comprehensive Loss

Amounts recognized in accumulated other comprehensive loss as of December 31, 2021 and 2020, are summarized as follows:

	Pensions						Postretirement Medical and Other
	2021			2020			2021		2020
Net actuarial gain (loss)	$	(51.3	)	$	(69.3	)	$	4.0	$	3.3
Prior service credit (cost)		(0.4	)		(0.4	)		1.4		4.1
Total amount recognized	$	(51.7	)	$	(69.7	)	$	5.4	$	7.4

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, 2021 retirement obligations and 2022 retirement benefit costs of our plans to changes in the key assumptions used to determine those results:

Change in assumption:	Estimated increase (decrease) in 2022 pension cost			Estimated increase (decrease) in Projected Benefit Obligation for the year ended December 31, 2021			Estimated increase (decrease) in 2022 Other Postretirement Benefit costs			Estimated increase (decrease) in Other Postretirement Benefit Obligation for the year ended December 31, 2021
0.50% increase in discount rate	$	(1.0	)	$	(14.2	)	N/A			$	(0.4	)
0.50% decrease in discount rate		1.1			15.8		N/A				0.4
0.50% increase in long-term return on assets		(0.8	)	N/A			N/A			N/A
0.50% decrease in long-term return on assets		0.8		N/A			N/A			N/A
1.0% increase in medical trend rates	N/A			N/A			0.1				0.4
1.0% decrease in medical trend rates	N/A			N/A				(0.1	)		(0.4	)

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, 2021 and 2020, by asset category are as follows:

	2021			2020
Equity		52.7	%		53.3	%
Fixed income		38.2	%		38.8	%
Other		9.1	%		7.9	%
Total		100.0	%		100.0	%

The weighted-average asset allocations of the Non-U.S. pension plans as of December 31, 2021 and 2020, by asset category are as follows:

	2021			2020
Equity		0.0	%		0.0	%
Fixed income		41.3	%		45.6	%
Other*		58.7	%		54.4	%
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, 2021, 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	%		0	%		52.7	%		0.0	%
Debt Securities		40	%	40%				38.2	%		41.3	%
Other		10	%	60%				9.1	%		58.7	%

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, 2021 and 2020. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. See Note 5, “Fair Value of Financial Instruments,” for definitions of each fair value level.

	December 31, 2021
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
Equity:
U.S. equity	$	—	$	—	$	—	$	32.7	$	32.7
International equity		—		—		—		31.9		31.9
Fixed income:
Corporate bonds and notes		—		—		—		27.1		27.1
Government and agency bonds		—		—		—		34.7		34.7
Commingled funds		—		—		—		18.9		18.9
International fixed income		—		—		—		2.2		2.2
Other:
Cash and cash equivalents		0.7		—		—		—		0.7
Money market funds		—		0.7		—		—		0.7
Annuity contracts		—		—		12.6		—		12.6
Other		—		—		—		3.3		3.3
Total	$	0.7	$	0.7	$	12.6	$	150.8	$	164.8

*Certain assets that are measured at fair value using the NAV per share practical expedient have not been classified in the fair value hierarchy.

	December 31, 2020
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
Equity:
U.S. equity	$	—	$	—	$	—	$	32.3	$	32.3
International equity		—		—		—		30.6		30.6
Fixed income:
Corporate bonds and notes		—		—		—		35.7		35.7
Government and agency bonds		—		—		—		30.1		30.1
Commingled funds		—		—		—		17.8		17.8
International fixed income		—		—		—		0.5		0.5
Other:
Cash and cash equivalents		0.6		—		—		—		0.6
Money market funds		—		0.7		—		—		0.7
Annuity contracts		—		—		12.9		—		12.9
Other		—		—		—		4.8		4.8
Total	$	0.6	$	0.7	$	12.9	$	151.8	$	166.0

*Certain assets that are measured at fair value using the NAV per share practical expedient have not been classified in the fair value hierarchy.

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,
	2021			2020
Beginning Balance	$	12.9		$	12.6
Actual return on assets		0.7			0.9
Benefit payments		(0.9	)		(1.0	)
Foreign currency impact		(0.1	)		0.4
Ending Balance	$	12.6		$	12.9

Schedule of Projected Future Benefit Payments from the Plans

Projected future benefit payments from the plans as of December 31, 2021 are estimated as follows:

	U.S Pension Plans		Non-U.S. Pension Plans		Postretirement Medical and Other
2022	$	8.7	$	2.8	$	1.6
2023		8.7		3.0		1.5
2024		8.8		3.2		1.4
2025		8.8		3.7		1.3
2026		8.7		3.9		1.2
Thereafter		41.7		22.8		4.6
Total	$	85.4	$	39.4	$	11.6

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, 2021 and 2020 is as follows:

	U.S Pension Plans				Non U.S. Pension Plans
	2021		2020		2021		2020
Projected benefit obligation	$	141.2	$	151.9	$	93.5	$	104.9
Accumulated benefit obligation		141.2		151.9		89.1		99.3
Fair value of plan assets		114.6		113.7		50.2		52.3