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Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2025

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost (Credit)

The components of the net periodic benefit cost (credit) for our retirement plans were as follows:

		Defined Benefit Pension Plan
		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2025				2024				2025				2024
Service cost		$	4.0			$	4.2			$	11.4			$	12.3
Interest cost			5.2				4.8				14.9				14.4
Expected return on assets			(5.4	)			(4.8	)			(15.4	)			(14.1	)
Net (gain) loss			—				(0.3	)			0.2				(1.1	)
Prior service cost			0.2				0.2				0.5				0.5
Curtailments			—				—				—				(1.3	)
Total benefit cost		$	4.0			$	4.1			$	11.6			$	10.7
		Retiree Health Care Plan
		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2025				2024				2025				2024
Interest cost		$	0.1			$	0.1			$	0.3			$	0.3
Prior service credit			(0.2	)			(0.2	)			(0.6	)			(0.6	)
Total benefit credit		$	(0.1	)		$	(0.1	)		$	(0.3	)		$	(0.3	)

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- References

No definition available.

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- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (q)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 715
-SubTopic 20
-Subparagraph (h)
-Name Accounting Standards Codification
-Paragraph 1
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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