Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Taxes [Line Items]
Valuation allowances	$ 36.3	$ 49.1
Unremitted earnings not taxed	18.2	17.5
Income tax reconciliation foreign withholding taxes	0.9	0.9
Unrecognized tax benefits	24.5	26.9	$ 27.3	$ 35.6
UTB if recognized, would impact the reported effective tax rate	11.6
UTB if recognized, would impact the reported effective tax rate, net of federal benefit	10.5
Interest and penalties reported as accrued income tax	2.8	2.3
Capital Loss Carryforward [Member]
Income Taxes [Line Items]
Capital loss carryforwards	$ 5.6	5.6
Minimum [Member]
Income Taxes [Line Items]
Number of open tax years subject to audit	3 years
Maximum [Member]
Income Taxes [Line Items]
Number of open tax years subject to audit	6 years
State [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 622.9	$ 646.7
Valuation allowances	27.8
Estimated future taxable income to utilize deferred tax assets	168.8
Estimated future capital gain to realize capital loss carryforwards	$ 168.1
Estimated future capital gain to realize capital loss carryforwards, expiration year	2025
UTB decrease due to uncertain tax positions	$ 0.8
State [Member] | State Tax Credits [Member]
Income Taxes [Line Items]
Valuation allowances	$ 2.9
State [Member] | Minimum [Member]
Income Taxes [Line Items]
Operating loss carryforwards, expiration date	2025
State [Member] | Maximum [Member]
Income Taxes [Line Items]
Operating loss carryforwards, expiration date	2043
Estimated future capital gain to realize capital loss carryforwards, expiration year	2036
Federal [Member]
Income Taxes [Line Items]
Estimated future capital gain to realize capital loss carryforwards	$ 22.6
Federal [Member] | Minimum [Member]
Income Taxes [Line Items]
Estimated future capital gain to realize capital loss carryforwards, expiration year	2025
Federal [Member] | Maximum [Member]
Income Taxes [Line Items]
Estimated future capital gain to realize capital loss carryforwards, expiration year	2026
Federal and State [Member] | Capital Loss Carryforward [Member]
Income Taxes [Line Items]
Valuation allowances	$ 5.6