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Schedule 2 - Parent Company Financial Statements - Balance Sheets (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Investments in Subsidiaries | $ 161.0 | $ 175.9 |  |
Fixed Maturities at Fair Value (Amortized Cost: 2017 – $0.3; 2016 – $46.3) | 5,382.7 | 5,124.9 |  |
Fair Value Option Investments | 77.5 | 111.4 |  |
Short-term Investments | 235.5 | 273.7 |  |
Cash | 45.7 | 115.7 | $ 161.7 | $ 76.1
Other Receivables | 194.3 | 198.6 |  |
Current Income Tax Assets | 6.1 | 15.5 |  |
Other Assets | 270.9 | 255.9 |  |
Total Assets | 8,376.2 | 8,210.5 |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |
Deferred Income Tax Liabilities | 14.8 | 0.0 |  |
Accrued Expenses and Other Liabilities | 453.7 | 453.2 |  |
Total Liabilities | 6,260.6 | 6,235.3 |  |
Shareholders’ Equity: |  |  |  |
Additional Paid-in Capital | 673.1 | 660.3 |  |
Retained Earnings | 1,243.0 | 1,172.8 |  |
Accumulated Other Comprehensive Income | 194.4 | 137.0 |  |
Stockholders' Equity Attributable to Parent | 2,115.6 | 1,975.2 |  |
Total Liabilities and Shareholders’ Equity | 8,376.2 | 8,210.5 |  |
Parent Company [Member] |  |  |  |
ASSETS |  |  |  |
Investments in Subsidiaries | 2,646.0 | 2,575.5 |  |
Fixed Maturities at Fair Value (Amortized Cost: 2017 – $0.3; 2016 – $46.3) | 0.3 | 46.3 |  |
Equity Securities at Fair Value (Cost: 2017 – $6.1; 2016 – $5.2) | 6.7 | 5.3 |  |
Fair Value Option Investments | 77.5 | 111.4 |  |
Short-term Investments | 104.4 | 120.0 |  |
Cash | 8.4 | 15.7 | $ 15.9 | $ 17.9
Other Receivables | 3.8 | 3.4 |  |
Current Income Tax Assets | 0.0 | 2.4 |  |
Other Assets | 5.8 | 7.5 |  |
Total Assets | 2,852.9 | 2,887.5 |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |
Current Income Tax Liability | 14.0 | 0.0 |  |
Deferred Income Tax Liabilities | 16.9 | 34.0 |  |
Liabilities for Benefit Plans | 104.9 | 118.7 |  |
Accrued Expenses and Other Liabilities | 9.2 | 8.0 |  |
Total Liabilities | 737.3 | 912.3 |  |
Shareholders’ Equity: |  |  |  |
Common Stock | 5.1 | 5.1 |  |
Additional Paid-in Capital | 673.1 | 660.3 |  |
Retained Earnings | 1,243.0 | 1,172.8 |  |
Accumulated Other Comprehensive Income | 194.4 | 137.0 |  |
Stockholders' Equity Attributable to Parent | 2,115.6 | 1,975.2 |  |
Total Liabilities and Shareholders’ Equity | 2,852.9 | 2,887.5 |  |
Parent Company [Member] | Senior Notes, 6% Due May 15, 2017 [Member] |  |  |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |
Notes Payable | 0.0 | 359.8 |  |
Parent Company [Member] | Senior Notes, 4.35 Percent Due February 15, 2025 [Member] |  |  |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |
Notes Payable | 448.1 | 247.7 |  |
Parent Company [Member] | Subordinated Debenture, 7.375 Percent Due 2054 [Member] |  |  |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |
Notes Payable | $ 144.2 | $ 144.1 |  |

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