Retirement Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2021

Components of Net Pension Expense

The components of net pension expense for our defined benefit retirement plans were as follows (in millions):

	For the Years Ended December 31,
	U.S. and Puerto Rico									Foreign
	2021			2020			2019			2021			2020			2019
Service cost	$	0.9		$	0.7		$	7.1		$	24.7		$	24.7		$	19.0
Interest cost		10.5			13.9			16.2			4.9			5.4			9.0
Expected return on plan assets		(29.8	)		(32.9	)		(32.4	)		(15.6	)		(13.3	)		(13.4	)
Curtailment gain		—			—			(7.2	)		—			—			—
Settlements		6.4			0.5			0.8			0.5			(0.5	)		—
Amortization of prior service cost		0.3			0.3			(3.4	)		(4.3	)		(4.2	)		(3.9	)
Amortization of unrecognized actuarial loss		8.6			7.2			19.3			2.5			1.3			2.5
Net periodic benefit (income) expense	$	(3.1	)	$	(10.3	)	$	0.4		$	12.7		$	13.4		$	13.2

Weighted Average Actuarial Assumptions Used to Determine Net Pension Expense for Our Defined Benefit Retirement Plans

The weighted average actuarial assumptions used to determine net pension expense for our defined benefit retirement plans were as follows:

	For the Years Ended December 31,
	U.S. and Puerto Rico									Foreign
	2021			2020			2019			2021			2020			2019
Discount rate		2.04	%		3.40	%		4.38	%		0.63	%		0.73	%		1.44	%
Rate of compensation increase		—			—			3.29	%		2.39	%		2.28	%		2.50	%
Expected long-term rate of return on plan assets		6.75	%		7.75	%		7.75	%		2.09	%		2.17	%		2.14	%

Changes in Projected Benefit Obligations

Changes in projected benefit obligations and plan assets were (in millions):

	For the Years Ended December 31,
	U.S. and Puerto Rico						Foreign
	2021			2020			2021			2020
Projected benefit obligation - beginning of year	$	516.9		$	472.0		$	819.3		$	740.4
Service cost		0.9			0.7			24.7			24.7
Interest cost		10.5			13.9			4.9			5.4
Plan amendments		—			—			—			0.2
Employee contributions		—			—			23.4			22.1
Benefits paid		(13.3	)		(24.0	)		(41.7	)		(39.8	)
Actuarial loss		3.0			55.6			6.1			12.5
Expenses paid		—			—			(0.2	)		(0.3	)
Settlement		(14.9	)		(1.3	)		(3.0	)		(4.5	)
Translation (gain) loss		—			—			(25.6	)		58.6
Projected benefit obligation - end of year	$	503.1		$	516.9		$	807.9		$	819.3

Changes in Fair Value of Plan Assets

	For the Years Ended December 31,
	U.S. and Puerto Rico						Foreign
	2021			2020			2021			2020
Plan assets at fair market value - beginning of year	$	474.1		$	444.9		$	756.7		$	665.2
Actual return on plan assets		50.5			51.4			86.6			40.0
Employer contributions		3.1			3.1			22.4			21.2
Employee contributions		—			—			23.4			22.1
Settlements		(14.9	)		(1.3	)		(3.0	)		(4.5	)
Benefits paid		(13.3	)		(24.0	)		(41.7	)		(39.8	)
Expenses paid		—			—			(0.2	)		(0.3	)
Translation (loss) gain		—			—			(23.0	)		52.8
Plan assets at fair market value - end of year	$	499.5		$	474.1		$	821.2		$	756.7
Funded status	$	(3.6	)	$	(42.8	)	$	13.3		$	(62.6	)

Summary of Amounts Recognized in Balance Sheet

	For the Years Ended December 31,
	U.S. and Puerto Rico						Foreign
	2021			2020			2021			2020
Amounts recognized in consolidated balance sheet:
Prepaid pension	$	2.7		$	—		$	54.9		$	20.4
Short-term accrued benefit liability		(0.1	)		(0.1	)		(1.3	)		(1.3	)
Long-term accrued benefit liability		(6.2	)		(42.7	)		(40.3	)		(81.7	)
Net amount recognized	$	(3.6	)	$	(42.8	)	$	13.3		$	(62.6	)

Weighted Average Actuarial Assumptions Used to Determine Projected Benefit Obligation for Defined Benefit Retirement Plans

The weighted average actuarial assumptions used to determine the projected benefit obligation for our defined benefit retirement plans were as follows:

	For the Years Ended December 31,
	U.S. and Puerto Rico									Foreign
	2021			2020			2019			2021			2020			2019
Discount rate		2.70	%		2.70	%		3.40	%		0.73	%		0.61	%		0.74	%
Rate of compensation increase		—			—			3.29	%		2.48	%		2.36	%		2.45	%

Plans with Benefit Obligations in Excess of Plan Assets

Plans with projected benefit obligations in excess of plan assets were as follows (in millions):

	As of December 31,
	U.S. and Puerto Rico				Foreign
	2021		2020		2021		2020
Projected benefit obligation	$	468.5	$	516.9	$	38.8	$	778.4
Plan assets at fair market value		462.2		474.1		8.1		709.5

Total Accumulated Benefit Obligations and Plans with Accumulated Benefit Obligations in Excess of Plan Assets

Total accumulated benefit obligations and plans with accumulated benefit obligations in excess of plan assets were as follows (in millions):

	As of December 31,
	U.S. and Puerto Rico				Foreign
	2021		2020		2021		2020
Total accumulated benefit obligations	$	503.1	$	516.9	$	783.0	$	801.3
Plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligation		468.5		516.9		36.4		560.9
Plan assets at fair market value		462.2		474.1		8.1		508.6

Summary of Benefits Expected to be Paid Out

The benefits expected to be paid out in each of the next five years and for the five years combined thereafter are as follows (in millions):

For the Years Ending December 31,	U.S. and Puerto Rico		Foreign
2022	$	24.6	$	32.8
2023		25.4		34.8
2024		25.7		33.6
2025		26.3		35.0
2026		27.0		34.7
2027-2031		133.1		175.7

Reconciliation of Beginning and Ending Balances of Foreign Pension Plan Assets Measured at Fair Value

The following table provides a reconciliation of the beginning and ending balances of our foreign pension plan assets measured at fair value that used significant unobservable inputs (Level 3) (in millions):

	December 31, 2021
Beginning Balance	$	145.3
Gain on assets sold		0.7
Change in fair value of assets		7.0
Net purchases and sales		11.9
Translation gain		(4.3	)
Ending Balance	$	160.6

U.S. and Puerto Rico [Member]

Fair Value of Pension Plan Assets

The fair value of our U.S. and Puerto Rico pension plan assets by asset category was as follows (in millions):

	As of December 31, 2021
			Fair Value Measurements at Reporting Date Using:
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents	$	3.8	$	3.8	$	—	$	—
Equity securities		342.1		—		342.1		—
Intermediate fixed income securities		153.6		—		153.6		—
Total	$	499.5	$	3.8	$	495.7	$	—

	As of December 31, 2020
			Fair Value Measurements at Reporting Date Using:
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents	$	7.3	$	7.3	$	—	$	—
Equity securities		304.1		—		304.1		—
Intermediate fixed income securities		162.7		—		162.7		—
Total	$	474.1	$	7.3	$	466.8	$	—

Foreign Plan [Member]

Fair Value of Pension Plan Assets

The fair value of our foreign pension plan assets was as follows (in millions):

	As of December 31, 2021
			Fair Value Measurements at Reporting Date Using:
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents	$	56.6	$	56.6	$	—	$	—
Equity securities		185.5		149.6		35.9		—
Fixed income securities		195.5		—		195.5		—
Other types of investments		223.0		—		223.0		—
Real estate		160.6		—		—		160.6
Total	$	821.2	$	206.2	$	454.4	$	160.6

	As of December 31, 2020
			Fair Value Measurements at Reporting Date Using:
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents	$	42.7	$	42.7	$	—	$	—
Equity securities		163.9		126.8		37.1		—
Fixed income securities		262.5		—		262.5		—
Other types of investments		142.3		—		142.3		—
Real estate		145.3		—		—		145.3
Total	$	756.7	$	169.5	$	441.9	$	145.3