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Retirement and Postretirement Plans (Tables)

9 Months Ended

Sep. 30, 2024

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Defined Benefit Plans Disclosures

The components of net periodic benefit cost (income) for the three months ended September 30, 2024 were as follows:


		Pension
		United States of America												United Kingdom				Mexico
		Bargaining Plan				Salaried Plan				Supplemental Plan				Pension Scheme				Pension Plan				Total Pension				Postretirement Plans
Service cost		$	2.2			$	—			$	—			$	—			$	—			$	2.2			$	0.1
Interest cost			6.4				—				0.2				0.6				—				7.2				1.1
Expected return on plan assets			(7.0	)			—				—				(0.7	)			—				(7.7	)			(0.7	)
Amortization of prior service cost			0.3				—				—				—				—				0.3				(1.5	)
Net remeasurement losses (gains)			—				—				—				—				—				—				—
Net Periodic Benefit Cost (Income)		$	1.9			$	—			$	0.2			$	(0.1	)		$	—			$	2.0			$	(1.0	)

The components of net periodic benefit cost (income) for the three months ended September 30, 2023 were as follows:


		Pension
		United States of America												United Kingdom				Mexico
		Bargaining Plan				Salaried Plan				Supplemental Plan				Pension Scheme				Pension Plan				Total Pension				Postretirement Plans
Service cost		$	2.4			$	0.2			$	—			$	—			$	—			$	2.6			$	0.2
Interest cost			6.5				1.6				0.2				0.5				—				8.8				1.2
Expected return on plan assets			(6.7	)			(1.8	)			—				(0.6	)			—				(9.1	)			(0.9	)
Amortization of prior service cost			0.3				—				—				—				—				0.3				(1.5	)
Net remeasurement losses (gains)			—				(1.0	)			—				—				—				(1.0	)			—
Net Periodic Benefit Cost (Income)		$	2.5			$	(1.0	)		$	0.2			$	(0.1	)		$	—			$	1.6			$	(1.0	)

The components of net periodic benefit cost (income) for the nine months ended September 30, 2024 were as follows:


		Pension
		United States of America												United Kingdom				Mexico
		Bargaining Plan				Salaried Plan				Supplemental Plan				Pension Scheme				Pension Plan				Total Pension				Postretirement Plans
Service cost		$	6.6			$	0.3			$	—			$	—			$	—			$	6.9			$	0.3
Interest cost			19.2				2.5				0.6				1.8				—				24.1				3.3
Expected return on plan assets			(21.0	)			(2.7	)			—				(2.1	)			—				(25.8	)			(2.1	)
Amortization of prior service cost			0.9				—				—				—				—				0.9				(4.5	)
Net remeasurement losses (gains)			—				1.8				—				—				—				1.8				—
Net Periodic Benefit Cost (Income)		$	5.7			$	1.9			$	0.6			$	(0.3	)		$	—			$	7.9			$	(3.0	)

The components of net periodic benefit cost (income) for the nine months ended September 30, 2023 were as follows:


		Pension
		United States of America												United Kingdom				Mexico
		Bargaining Plan				Salaried Plan				Supplemental Plan				Pension Scheme				Pension Plan				Total Pension				Postretirement Plans
Service cost		$	7.2			$	0.6			$	—			$	—			$	—			$	7.8			$	0.6
Interest cost			19.5				4.9				0.6				1.5				—				26.5				3.6
Expected return on plan assets			(20.1	)			(5.6	)			—				(1.8	)			—				(27.5	)			(2.7	)
Amortization of prior service cost			0.9				—				—				—				—				0.9				(4.5	)
Net remeasurement losses (gains)			—				1.7				—				—				—				1.7				—
Net Periodic Benefit Cost (Income)		$	7.5			$	1.6			$	0.6			$	(0.3	)		$	—			$	9.4			$	(3.0	)