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Retirement Benefit Plans (Tables) - Pension Plan

12 Months Ended

Dec. 31, 2024

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Periodic Benefit Cost Information and the Related Assumptions Used to Measure the Net Periodic Benefit Cost

The following tables summarize the net periodic benefit cost information and the related assumptions used to measure the net periodic benefit cost for the years ended December 31:

			U.S. Plans									International Plans
			2024			2023			2022			2024			2023			2022
Components of net periodic    benefit cost:
Service cost			$	0.7		$	0.8		$	6.9		$	1.9		$	1.6		$	1.6
Interest cost			17.1			17.9			17.7			10.2			10.4			5.7
Expected return on plan assets			(7.6)			(8.5)			(18.9)			(9.6)			(10.4)			(9.3)
Amortization of prior service cost			0.1			0.2			1.2			0.2			0.2			0.1
Recognition of net actuarial    (gains) losses			(1.3)			9.2			22.6			0.6			12.4			(6.6)
Curtailment gain			—			—			—			(0.1)			—			—
Net periodic benefit cost (credit)			$	9.0		$	19.6		$	29.5		$	3.2		$	14.2		$	(8.5)

Schedule of Assumptions Used to Measure the Benefit Obligation for the Defined Benefit Pension Plans

Assumptions			2024			2023			2022
U.S. Plans:
Discount rate			5.37% to 5.53%			5.62% to 5.74%			3.03% to 4.95%
Future compensation assumption			3.25%			2.50% to 3.50%			2.50% to 3.50%
Expected long-term return on plan assets			2.09% to 4.67%			4.31% to 4.91%			4.35% to 5.65%
International Plans:
Discount rate			3.15% to 11.70%			3.70% to 10.70%			1.00% to 9.50%
Future compensation assumption			3.00% to 8.00%			2.80% to 8.00%			2.10% to 8.00%
Expected long-term return on plan assets			2.50% to 8.90%			2.50% to 8.90%			2.00% to 8.90%

The following table summarizes assumptions used to measure the benefit obligation for the defined benefit pension plans at December 31:

Assumptions			2024			2023
U.S. Plans:
Discount rate			5.78% to 5.84%			5.37% to 5.53%
Future compensation assumption			3.00%			3.25		%
International Plans:
Discount rate			3.35% to 11.40%			3.15% to 11.70%
Future compensation assumption			2.62% to 8.00%			3.00% to 8.00%

Schedule of Change in Benefit Obligations

The following tables set forth the change in the benefit obligation and plan assets, funded status and amounts recognized on the Consolidated Balance Sheets for defined benefit pension plans as of December 31, 2024 and 2023:

			U.S. Plans						International Plans
			2024			2023			2024			2023
Change in benefit obligation:
Benefit obligation at beginning of year			$	333.2		$	335.3		$	242.3		$	218.1
Service cost			0.7			0.8			1.9			1.6
Interest cost			17.1			17.9			10.2			10.4
Plan amendments			—			—			0.3			—
Actuarial (gains) losses			(12.6)			10.8			(14.9)			10.8
International plan exchange rate change			—			—			(6.9)			10.4
Curtailments			—			—			(0.1)			—
Benefits paid			(21.0)			(31.6)			(15.0)			(14.7)
Acquisitions			—			—			—			3.9
Other			—			—			0.4			1.8
Benefit obligation at end of year			$	317.4		$	333.2		$	218.2		$	242.3

Schedule of Change in Plan Assets

Change in plan assets:
Fair value of plan assets at beginning of year			$	199.2		$	201.6		$	196.8		$	185.5
Actual return on plan assets			(3.7)			10.1			(5.9)			8.8
Company contributions / payments			20.5			19.1			4.1			8.0
International plan exchange rate change			—			—			(4.1)			9.2
Benefits paid			(21.0)			(31.6)			(15.0)			(14.7)
Fair value of plan assets at end of year			195.0			199.2			175.9			196.8
Funded status at end of year			$	(122.4)		$	(134.0)		$	(42.3)		$	(45.5)

Schedule of Amounts Recognized on the Consolidated Balance Sheets

Amounts recognized on the Consolidated Balance Sheets:
Current liabilities			$	(4.9)		$	(4.8)		$	(2.1)		$	(2.4)
Non-current liabilities			(117.5)			(129.2)			(40.2)			(43.1)
			$	(122.4)		$	(134.0)		$	(42.3)		$	(45.5)

Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss (Income) and Changes in Prior Service Cost Recognized in Accumulated Other Comprehensive Loss (Income)

Amounts recognized in accumulated other comprehensive loss:
Net prior service cost			$	—		$	0.1		$	3.6		$	3.6
Accumulated other comprehensive loss			$	—		$	0.1		$	3.6		$	3.6

Changes in prior service cost recognized in accumulated other      comprehensive loss:
Accumulated other comprehensive loss at beginning of year			$	0.1		$	0.3		$	3.6		$	3.6
Prior service cost			—			—			0.3			—
Recognized prior service cost			(0.1)			(0.2)			(0.2)			(0.2)
Foreign currency impact			—			—			(0.1)			0.2
Total recognized in accumulated other comprehensive      loss at December 31			$	—		$	0.1		$	3.6		$	3.6

Schedule of Target Allocation for Pension Plan Assets and Actual Pension Plan Asset Allocations

The Company’s target allocation for pension plan assets, as well as the actual pension plan asset allocations as of December 31, 2024 and 2023, was as follows: 

			Current Target Allocation									Percentage of Pension Plan Assets at December 31,
Asset Category												2024			2023
Equity securities			10%			to			14%			13%			13%
Fixed income securities			78%			to			90%			83%			84%
Other investments			2%			to			6%			4%			3%
Total												100%			100%

Schedule of Fair Value Hierarchy for Investments of Pension Assets Measured at Fair Value on a Recurring Basis

The following table presents the fair value hierarchy for those investments of the Company’s pension assets measured at fair value on a recurring basis:

			December 31, 2024												December 31, 2023
			Level 1			Level 2			Level 3			Total			Level 1			Level 2			Level 3			Total
Assets:
Cash and cash equivalents			$	14.0		$	—		$	—		$	14.0		$	28.0		$	—		$	—		$	28.0
Government and agency securities			8.0			—			—			8.0			9.0			—			—			9.0
Equity securities - U.S. companies			0.1			—			—			0.1			0.1			—			—			0.1
Common collective funds - fixed income			—			—			—			—			31.0			—			—			31.0
Mutual funds - fixed income			28.8			—			—			28.8			30.5			—			—			30.5
			$	50.9		$	—		$	—		$	50.9		$	98.6		$	—		$	—		$	98.6
Investments measured at net asset value:
Common collective funds - international equities												47.3												45.8
Common collective funds - fixed income												132.2												166.1
Limited partnerships												4.2												5.4
Real estate partnerships												2.3												3.5
Other liability-driven investments												109.1												51.6
Other assets												24.9												25.0
Total Assets												$	370.9											$	396.0

Schedule of Employer Contributions to Defined Benefit Plans

Employer Contributions to Defined Benefit Plans
2023			$	27.1
2024			24.6
2025 (estimated)			37.6

Schedule of Estimated Future Benefit Payments

Estimated future benefit payments, including estimated lump sum distributions, are expected to be as follows:

Benefit Payments
2025			$	56.4
2026			48.5
2027			44.2
2028			42.6
2029			41.7
2030-2034			211.3

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