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Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2024

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

			Pension Plan Adjustments			Other Post Retirement Employee Benefit Plan Adjustments			Total
Balance at December 31, 2022			$	(46.5)		$	13.3		$	(33.3)
Amounts reclassified from accumulated other comprehensive loss			—			(0.3)			(0.2)
Balance at September 30, 2023			$	(46.5)		$	13.0		$	(33.5)
Balance at December 31, 2023			$	(42.0)		$	11.3		$	(30.7)
Amounts reclassified from accumulated other comprehensive loss			0.1			(0.2)			(0.1)
Balance at September 30, 2024			$	(41.9)		$	11.1		$	(30.8)

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- Definition

Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss).

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Namespace Prefix:	us-gaap_
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