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Insurance and Other Expenses (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Insurance and Other Expenses [Abstract] |  |  |
Commissions | $ 596.3 | $ 584.2 | $ 724.8
Taxes, Licenses and Fees | 83.7 | 79.6 | 99.5
Policy Acquisition Costs: |  |  |
Deferred | (576.4) | (563.3) | (691.5)
Amortized | 538.0 | 607.1 | 705.7
Net Policy Acquisition Costs (Deferred) Amortized | (38.4) | 43.8 | 14.2
Policy Acquisition Costs | 641.6 | 707.6 | 838.5
Business Unit Operating Costs | 277.4 | 256.1 | 282.4
Corporate Overhead Costs | 194.9 | 200.0 | 207.8
Insurance Expenses | 1,113.9 | 1,163.7 | 1,328.7
Acquisition and Disposition Related Transaction, Integration, Restructuring and Other Costs | 40.3 | 120.3 | 62.9
Pension Settlement | (2.6) | 70.2 | 0.0
Other Corporate Costs | 28.5 | 11.4 | 12.3
Other Expenses | 66.2 | 201.9 | 75.2
Insurance and Other Expenses | $ 1,180.1 | $ 1,365.6 | $ 1,403.9

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- Definition The expense incurred by an insurance company to persons or entities for generating or placing insurance or investment contracts with the company, usually determined as a percentage of policy or contract premiums. Excludes advances or draws to be applied against commissions earned. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(7)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 + Details
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