Retirement and Deferred Compensation Plans

12 Months Ended

Dec. 31, 2023

Retirement Benefits [Abstract]

Retirement and Deferred Compensation Plans

(9) Retirement and Deferred Compensation Plans

For all of our United States defined benefit and retiree health care plans, we adopted the Society of Actuaries’ Pri-2012 Mortality Table with MP-2021 Mortality Improvement Scale in determining the plans’ benefit obligations as of December 31, 2023.

Defined Benefit Pension Plans

We sponsor qualified and nonqualified pension plans covering permanent employees in several countries. In our Switzerland pension plan, we recognized a partial settlement as a result of local regulations and turnover common to our industry and reclassified pension losses of $5.8, $2.7, and $1.0 in 2023, 2022, and 2021, respectively, net of tax, recorded in accumulated other comprehensive loss to the Consolidated Statements of Comprehensive Income.

The reconciliation of the changes in the plans’ benefit obligations, the fair value of plan assets and the funded status of the plans are as follows:

	United States Plans						Non-United States Plans
Year Ended December 31		2023		2022				2023		2022
Change in Benefit Obligation
Benefit obligation, beginning of year	$	20.5		$	26.0		$	632.3		$	897.9
Service cost		—			—			15.5			19.4
Interest cost		1.0			0.5			20.1			8.2
Settlements		—			—			(66.4	)		(57.4	)
Transfers		—			—			26.9			31.1
Actuarial (gain) loss		(0.1	)		(3.7	)		43.3			(218.7	)
Plan participant contributions		—			—			12.4			13.0
Benefits paid		(2.2	)		(2.3	)		(14.2	)		(11.4	)
Currency exchange rate changes		—			—			43.3			(49.8	)
Benefit obligation, end of year	$	19.2		$	20.5		$	713.2		$	632.3

	United States Plans						Non-United States Plans
Year Ended December 31		2023		2022				2023		2022
Change in Plan Assets
Fair value of plan assets, beginning of year	$	—		$	—		$	547.8		$	762.5
Actual return on plan assets		—			—			30.3			(166.7	)
Settlements		—			—			(66.4	)		(57.4	)
Transfers		—			—			28.4			31.8
Plan participant contributions		—			—			12.4			13.0
Company contributions		2.2			2.3			17.6			17.1
Benefits paid		(2.2	)		(2.3	)		(14.2	)		(11.4	)
Currency exchange rate changes		—			—			40.4			(41.1	)
Fair value of plan assets, end of year	$	—		$	—		$	596.3		$	547.8
Funded Status at End of Year
Funded status, end of year	$	(19.2	)	$	(20.5	)	$	(117.0	)	$	(84.5	)
Amounts Recognized
Noncurrent assets	$	—		$	—		$	8.8		$	26.6
Current liabilities		(2.2	)		(2.4	)		(1.0	)		(1.2	)
Noncurrent liabilities		(17.0	)		(18.1	)		(124.8	)		(109.9	)
Net amount recognized	$	(19.2	)	$	(20.5	)	$	(117.0	)	$	(84.5	)

For both 2023 and 2022, the actuarial gain related to the non-United States plans' benefit obligation was primarily related to changes in discount rates. The settlements and transfers of the non-United States plans primarily represent transfers in and out of temporary associates within our Switzerland plan.

Amounts recognized in accumulated other comprehensive loss, net of tax, consisted of:

	United States Plans				Non-United States Plans
Year Ended December 31		2023	2022			2023	2022
Net loss	$	4.0	$	4.5	$	26.9	$	4.6
Prior service cost		—		—		5.1		3.1
Total	$	4.0	$	4.5	$	32.0	$	7.7

The accumulated benefit obligation (ABO) for all qualified defined benefit pension plans was $706.0 and $629.0 as of December 31, 2023 and 2022, respectively. The ABO for plans that have plan assets was $625.1 and $554.1 as of December 31, 2023 and 2022, respectively. The accumulated benefit obligation for some of our plans exceeded the fair value of plan assets as follows:

December 31		2023	2022
Accumulated benefit obligation	$	129.9	$	113.4
Plan assets		89.0		76.8

The projected benefit obligation (PBO) for all qualified defined benefit pension plans was $732.4 and $652.8 as of December 31, 2023 and 2022, respectively. The PBO for some of our plans exceeded the fair value of plan assets as follows:

December 31		2023	2022
Projected benefit obligation	$	137.8	$	117.4
Plan assets		92.6		76.8

By their nature, certain of our plans do not have plan assets. The accumulated benefit obligation for these plans was $80.9 and $74.9 as of December 31, 2023 and 2022, respectively.

The components of the net periodic benefit cost and other amounts recognized in other comprehensive income (loss) for all plans were as follows:

Year Ended December 31		2023		2022			2021
Net Periodic Benefit Cost
Service cost	$	15.5		$	19.4		$	22.0
Interest cost		21.1			8.7			6.1
Expected return on assets		(19.0	)		(14.7	)		(12.2	)
Settlements		6.7			2.7			1.0
Net (gain) loss		(3.3	)		1.8			4.6
Prior service cost		0.7			0.7			0.7
Net periodic benefit cost		21.7			18.6			22.2
Other Changes in Plan Assets and Benefit Obligation Recognized in Other Comprehensive Income/Loss
Net loss (gain)		31.9			(40.9	)		(60.0	)
Prior service credit		(1.2	)		(0.2	)		—
Amortization of net loss		(3.7	)		(5.0	)		(5.6	)
Amortization of prior service cost		(0.7	)		(0.7	)		(0.7	)
Total recognized in other comprehensive income/loss		26.3			(46.8	)		(66.3	)
Total recognized in net periodic benefit cost and other comprehensive income/loss	$	48.0		$	(28.2	)	$	(44.1	)

The estimated net gain and prior service cost for the defined benefit pension plans that will be amortized from accumulated other comprehensive income/loss into net periodic benefit cost during 2024 are $1.5 and $0.7, respectively.

The weighted-average assumptions used in the measurement of the benefit obligation were as follows:

	United States Plans						Non-United States Plans
Year Ended December 31		2023		2022				2023		2022
Discount rate		5.2	%		5.4	%		2.7	%		3.2	%
Rate of compensation increase		1.4	%		1.3	%		1.9	%		1.9	%

The weighted-average assumptions used in the measurement of the net periodic benefit cost were as follows:

	United States Plans									Non-United States Plans
Year Ended December 31		2023		2022			2021				2023		2022			2021
Discount rate		5.4	%		2.6	%		2.1	%		3.2	%		1.0	%		0.6	%
Expected long-term return on plan assets	N/A			N/A			N/A				3.5	%		2.2	%		1.8	%
Rate of compensation increase		1.3	%		1.3	%		—	%		1.9	%		1.7	%		1.7	%
Interest crediting rates for cash balance plans	N/A			N/A			N/A				2.6	%		0.5	%		1.9	%

We determine our assumption for the discount rate based on an index of high-quality corporate bond yields and matched-funding yield curve analysis as of the end of each fiscal year.

Our overall expected long-term rate of return used in the measurement of the 2023 net periodic benefit cost on non-United States plans varied by country and ranged from 2.5% to 5.0%. For a majority of our plans, a building block approach has been employed to establish this return. Historical markets are studied and long-term historical relationships between equity securities and fixed income instruments are preserved consistent with the widely accepted capital market principle that assets with higher volatility generate a greater return over time. Current market factors such as inflation and interest rates are evaluated before long-term capital market assumptions are determined. The long-term portfolio return is established with proper consideration of diversification and rebalancing. We also use guaranteed insurance contracts for four of our foreign plans. Peer data and historical returns are reviewed to check for reasonableness and appropriateness of our expected rate of return. None of our United States plans has plan assets due to the settlement of the Qualified Retirement Plan liability during the first quarter of 2020.

Projected salary levels utilized in the determination of the projected benefit obligation for the pension plans are based upon historical experience and the future expectations for each respective country.

Our plans’ investment policies are to optimize the long-term return on plan assets at an acceptable level of risk and to maintain careful control of the risk level within each asset class. Our long-term objective is to minimize plan expenses and contributions by outperforming plan liabilities. We have historically used a balanced portfolio strategy based primarily on a target allocation of equity securities and fixed-income instruments, which vary by location. These target allocations, which are similar to the 2023 allocations, are determined based on the favorable risk tolerance characteristics of the plan and, at times, may be adjusted within a specified range to advance our overall objective.

The fair values of our Level 1 and Level 2 pension plan assets are primarily determined by using market quotes and other relevant information that is generated by market transactions involving identical or comparable assets. Insurance contracts and annuity contracts are measured at the present value of expected future benefit payments primarily using associated interest curves. Hedge funds consist of a number of diversified funds including those investing in international securities, equity and private partnership interests valued using market available data and various models and assumptions.

The fair value of our pension plan assets by asset category was as follows:

	Fair Value Measurements Using
	December 31, 2023		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Asset Category
Cash and cash equivalents	$	6.9	$	6.9	$	—	$	—
Equity securities:
Mutual funds		137.6		137.6		—		—
Common stock		34.0		34.0		—		—
Fixed income instruments:
Fixed income funds		125.6		—		125.6		—
Annuity contract		35.4		—		—		35.4
Guaranteed insurance contracts		23.4		—		23.4		—
Other types of investments:
Real estate funds		99.6		—		98.2		1.4
Insurance contracts		82.6		—		—		82.6
Hedge funds		29.1		—		12.4		16.7
Other		22.1		—		3.9		18.2
	$	596.3	$	178.5	$	263.5	$	154.3

	Fair Value Measurements Using
	December 31, 2022		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Asset Category
Cash and cash equivalents	$	18.3	$	18.3	$	—	$	—
Equity securities:
Mutual funds		114.5		114.5		—		—
Common stock		29.0		29.0		—		—
Fixed income instruments:
Fixed income funds		73.7		—		73.7		—
Bonds		38.0		—		38.0		—
Annuity contract		33.5		—		—		33.5
Guaranteed insurance contracts		21.3		—		21.3		—
Other types of investments:
Real estate funds		95.3		—		94.0		1.3
Insurance contracts		76.7		—		—		76.7
Hedge funds		28.7		—		13.5		15.2
Other		18.8		—		3.3		15.5
	$	547.8	$	161.8	$	243.8	$	142.2

The following table summarizes the changes in fair value of the pension assets that are measured using Level 3 inputs. We determined that transfers between fair-value-measurement levels occurred on the date of the event that caused the transfer.

Year Ended December 31	2023			2022
Balance, beginning of year	$	142.2		$	206.5
Actual return on plan assets		5.6			(61.2	)
Purchases, sales and settlements, net		(0.7	)		7.4
Currency exchange rate changes		7.2			(10.5	)
Balance, end of year	$	154.3		$	142.2

Retiree Health Care Plan

We provide medical and dental benefits to certain eligible retired employees in the United States. Due to the nature of the plan, there are no plan assets. The reconciliation of the changes in the plan’s benefit obligation and the statement of the funded status of the plan were as follows:

Year Ended December 31	2023			2022
Change in Benefit Obligation
Benefit obligation, beginning of year	$	11.5		$	14.1
Interest cost		0.5			0.3
Actuarial gain		(1.0	)		(2.1	)
Benefits paid		(0.8	)		(0.8	)
Benefit obligation, end of year	$	10.2		$	11.5
Funded Status at End of Year
Funded status, end of year	$	(10.2	)	$	(11.5	)
Amounts Recognized
Current liabilities	$	(1.1	)	$	(1.2	)
Noncurrent liabilities		(9.1	)		(10.3	)
Net amount recognized	$	(10.2	)	$	(11.5	)

The amount recognized in accumulated other comprehensive loss, net of tax, consists of a net gain of $0.3 and a net loss of $0.5 as of December 31, 2023 and 2022, respectively, and a prior service credit of $1.0 and $1.7 as of December 31, 2023 and 2022, respectively.

The discount rate used in the measurement of the benefit obligation was 4.9% and 5.1% in 2023 and 2022, respectively. The discount rate used in the measurement of net periodic benefit cost was 5.1%, 2.6% and 2.2% in 2023, 2022, and 2021, respectively.

The components of net periodic benefit cost and other amounts recognized in other comprehensive loss for this plan were as follows:

Year Ended December 31	2023			2022			2021
Net Periodic Benefit Credit
Interest cost	$	0.5		$	0.3		$	0.2
Net loss		—			0.2			0.2
Prior service credit		(0.8	)		(0.8	)		(0.8	)
Net periodic benefit credit	$	(0.3	)	$	(0.3	)	$	(0.4	)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income/Loss
Net (gain) loss	$	(1.0	)	$	(2.0	)	$	0.2
Amortization of net loss		—			(0.2	)		(0.2	)
Amortization of prior service credit		0.8			0.8			0.8
Total recognized in other comprehensive income/loss		(0.2	)		(1.4	)		0.8
Total recognized in net periodic benefit cost and other comprehensive income/loss	$	(0.5	)	$	(1.7	)	$	0.4

The estimated prior service credit for the retiree health care plan that will be amortized from accumulated other comprehensive income/loss into net periodic benefit cost during 2024 is $0.8. No net gain/loss is estimated to be amortized in 2024.

The health care cost trend rate is assumed to be 7.4% in 2024, decreasing gradually to an ultimate rate of 4.4% in 2033. Assumed health care cost trend rates are not expected to have a material effect on the amounts reported.

Future Contributions and Payments

During 2024, we plan to contribute approximately $16.4 to our pension plans and to fund our retiree health care payments as incurred. Projected benefit payments from the plans as of December 31, 2023 were estimated as follows:

Year	Pension Plans		Retiree Health Care Plan
2024	$	72.2	$	1.1
2025		46.5		1.1
2026		36.7		1.0
2027		31.5		1.0
2028		28.9		0.9
2029–2033		176.9		4.1
Total projected benefit payments	$	392.7	$	9.2

Defined Contribution Plans and Deferred Compensation Plans

We have defined contribution plans covering substantially all permanent United States employees and various other employees throughout the world. With our company-sponsored plans, employees may elect to contribute a portion of their salary to the plans and we match a portion of their contributions up to a maximum percentage of the employee’s salary. In addition, profit sharing contributions are made if a targeted earnings level is reached at management’s discretion. The total expense for our match and any profit sharing contributions was $19.2, $18.4 and $17.3 for the years ended December 31, 2023, 2022 and 2021, respectively. In certain countries with statutory defined contribution plans, we pay a percentage of the employees' salary in pension premiums. The total expense for the statutory defined contribution plans was $29.5, $31.4 and $32.2 for the years ended December 31, 2023, 2022 and 2021, respectively.

We also have deferred compensation plans in the United States. One of the plans had an asset and liability of $144.2 and $114.4 as of December 31, 2023 and 2022, respectively, with the remaining plans holding immaterial amounts of assets and liabilities.