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Income Taxes - Schedule of Temporary Differences That Give Rise to Net Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Deferred Income Tax Assets: |  |
Insurance Reserves | $ 16.2 | $ 17.0
Unearned Premium Reserves | 64.5 | 59.1
Tax Capitalization of Policy Acquisition Costs | 44.6 | 44.0
Payroll and Employee Benefit Accruals | 35.0 | 49.6
Net Operating Loss Carryforwards | 3.3 | 5.5
Other | 12.5 | 11.2
Total Deferred Income Tax Assets | 176.1 | 186.4
Deferred Income Tax Liabilities: |  |
Investments | 155.6 | 33.2
Deferred Policy Acquisition Costs | 112.9 | 98.7
Life VIF and P&C Customer Relationships | 5.3 | 6.0
Goodwill and Other Intangible Assets Acquired | 39.3 | 45.2
Depreciable Assets | 37.6 | 27.1
Other | 3.6 | 2.4
Total Deferred Income Tax Liabilities | 354.3 | 212.6
Net Deferred Income Tax Liabilities | $ 178.2 | $ 26.2

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