Equity Incentive Programs (Schedule of Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU liability awards expense	$ 0.0	$ 0.2
Stock-based compensation charges	5.6	6.0
Restricted Stock and Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized	4.3	5.1
Deferred Stock Units (DSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized	$ 1.3	$ 0.7