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Other Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2025

Postretirement Plan

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Periodic Benefit Cost for the Other Postretirement Benefit Plans

The following table sets forth the net periodic benefit cost for the Company’s other postretirement benefit plans. The amounts for the three and nine months ended September 30, 2025 are based on calculations prepared by the Company's actuaries and represent the Company’s best estimate of that period’s proportionate share of the amounts to be recorded for the year ending December 31, 2025.

			Three Months Ended September 30,												Nine Months Ended September 30,
			2025						2024						2025						2024
Net periodic benefit credit:
Service cost			$	0.1					$	0.1					$	0.1					$	0.1
Interest cost			0.5						0.4						1.4						1.3
Amortization of prior service credit			(2.1)						(2.1)						(6.2)						(6.2)
Net periodic benefit credit			$	(1.5)					$	(1.6)					$	(4.7)					$	(4.8)

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans.

+ References

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-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
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-Paragraph 5
-Publisher FASB
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-URI https://asc.fasb.org/1943274/2147480506/715-20-50-2

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