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Schedule 2 - Parent Company Financial Statements - Balance Sheets (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Investments in Subsidiaries | $ 187.0 | $ 161.0 |  |
Fixed Maturities at Fair Value (Amortized Cost: 2018 – $12.6; 2017 – $0.3) | 6,424.2 | 5,382.7 |  |
Fair Value Option Investments | 0.0 | 77.5 |  |
Short-term Investments | 286.1 | 235.5 |  |
Cash | 75.1 | 45.7 | $ 115.7 | $ 161.7
Other Receivables | 245.4 | 194.3 |  |
Current Income Tax Assets | 38.9 | 6.1 |  |
Other Assets | 526.5 | 270.9 |  |
Total Assets | 11,544.9 | 8,376.2 |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |
Deferred Income Tax Liabilities | 26.2 | 14.8 |  |
Accrued Expenses and Other Liabilities | 697.3 | 453.7 |  |
Total Liabilities | 8,494.8 | 6,260.6 |  |
Shareholders’ Equity: |  |  |  |
Additional Paid-in Capital | 1,666.3 | 673.1 |  |
Retained Earnings | 1,355.5 | 1,243.0 |  |
Accumulated Other Comprehensive Income | 21.8 | 194.4 |  |
Stockholders' Equity Attributable to Parent | 3,050.1 | 2,115.6 |  |
Total Liabilities and Shareholders’ Equity | 11,544.9 | 8,376.2 |  |
Parent Company [Member] |  |  |  |
ASSETS |  |  |  |
Investments in Subsidiaries | 3,736.0 | 2,646.0 |  |
Fixed Maturities at Fair Value (Amortized Cost: 2018 – $12.6; 2017 – $0.3) | 12.6 | 0.3 |  |
Equity Securities at Fair Value | 20.4 | 6.7 |  |
Fair Value Option Investments | 0.0 | 77.5 |  |
Short-term Investments | 64.6 | 104.4 |  |
Cash | 2.9 | 8.4 | 15.7 | $ 15.9
Other Receivables | 5.7 | 3.8 |  |
Other Assets | 14.4 | 5.8 |  |
Total Assets | 3,856.6 | 2,852.9 |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |
Current Income Tax Liability | 40.5 | 14.0 |  |
Deferred Income Tax Liabilities | 20.2 | 16.9 |  |
Liabilities for Benefit Plans | 98.2 | 104.9 |  |
Accrued Expenses and Other Liabilities | 20.1 | 9.2 |  |
Total Liabilities | 806.5 | 737.3 |  |
Shareholders’ Equity: |  |  |  |
Common Stock | 6.5 | 5.1 |  |
Additional Paid-in Capital | 1,666.3 | 673.1 |  |
Retained Earnings | 1,355.5 | 1,243.0 |  |
Accumulated Other Comprehensive Income | 21.8 | 194.4 |  |
Stockholders' Equity Attributable to Parent | 3,050.1 | 2,115.6 |  |
Total Liabilities and Shareholders’ Equity | 3,856.6 | 2,852.9 |  |
Parent Company [Member] | Term Loan Due 2020 [Member] |  |  |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |
Notes Payable |  | 34.9 | $ 0.0 |
Parent Company [Member] | Senior Notes, 4.35 Percent Due February 15, 2025 [Member] |  |  |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |
Notes Payable | 448.4 | 448.1 |  |
Parent Company [Member] | Subordinated Debenture, 7.375 Percent Due 2054 [Member] |  |  |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |
Notes Payable | $ 144.2 | $ 144.2 |  |

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