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Stock-Based Compensation (Stock-Based Compensation Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Stock or Unit Option Plan Expense	$ 0.0	$ 0.0	$ 0.1
Stock Appreciation Rights Expense	0.0	1.0	0.9
Allocated Share-based Compensation Expense	1.5	2.3	1.9
Share-based Payment Arrangement, Expense, Tax Benefit	(0.3)	(0.3)	(0.2)
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Restricted Stock or Unit Expense	1.0	0.9	0.7
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock or Unit Expense	1.0	0.9	0.7
Restricted Stock
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Restricted Stock or Unit Expense	0.5	0.4	0.2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock or Unit Expense	$ 0.5	$ 0.4	$ 0.2

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