v2.4.0.6

Investments (Tables) | 9 Months Ended
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Sep. 30, 2012
Schedule of Available-for-sale Securities [Line Items] |
Investments Classified by Contractual Maturity Date [Table Text Block] | The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at September 30, 2012 by contractual maturity were:
(Dollars in Millions) |  | Amortized Cost |  | Fair Value
Due in One Year or Less |  | $ | 49.8 |  |  | $ | 49.9 |
Due after One Year to Five Years |  | 549.1 |  |  | 581.8 |
Due after Five Years to Ten Years |  | 1,045.6 |  |  | 1,160.7 |
Due after Ten Years |  | 2,271.1 |  |  | 2,695.9 |
Asset-backed Securities Not Due at a Single Maturity Date |  | 213.9 |  |  | 237.3 |
Investments in Fixed Maturities |  | $ | 4,129.5 |  |  | $ | 4,725.6 |
Schedule of Unrealized Loss on Investments [Table Text Block] | An aging of unrealized losses on the Company’s Investments in Fixed Maturities and Equity Securities at December 31, 2011 is presented below:
|  | Less Than 12 Months |  | 12 Months or Longer |  | Total
(Dollars in Millions) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Fixed Maturities: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government and Government Agencies and Authorities |  | $ | 1.3 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1.3 |  |  | $ | — |
States and Political Subdivisions |  | 2.0 |  |  | — |  |  | 12.0 |  |  | (0.8 | ) |  | 14.0 |  |  | (0.8 | )
Corporate Securities: |  |  |  |  |  |  |  |  |  |  |  |
Bonds and Notes |  | 169.6 |  |  | (5.1 | ) |  | 74.7 |  |  | (4.3 | ) |  | 244.3 |  |  | (9.4 | )
Redeemable Preferred Stocks |  | 0.6 |  |  | (0.1 | ) |  | 0.1 |  |  | — |  |  | 0.7 |  |  | (0.1 | )
Mortgage and Asset-backed |  | — |  |  | — |  |  | 2.7 |  |  | (0.8 | ) |  | 2.7 |  |  | (0.8 | )
Total Fixed Maturities |  | 173.5 |  |  | (5.2 | ) |  | 89.5 |  |  | (5.9 | ) |  | 263.0 |  |  | (11.1 | )
Equity Securities: |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stocks: |  |  |  |  |  |  |  |  |  |  |  |
Finance, Insurance and Real Estate |  | 54.9 |  |  | (8.1 | ) |  | 2.2 |  |  | (0.6 | ) |  | 57.1 |  |  | (8.7 | )
Other Industries |  | 1.8 |  |  | — |  |  | 2.8 |  |  | (0.1 | ) |  | 4.6 |  |  | (0.1 | )
Common Stocks: |  |  |  |  |  |  |  |  |  |  |  |
Manufacturing |  | 1.5 |  |  | (0.1 | ) |  | 0.1 |  |  | — |  |  | 1.6 |  |  | (0.1 | )
Other Industries |  | 10.7 |  |  | (1.8 | ) |  | — |  |  | — |  |  | 10.7 |  |  | (1.8 | )
Other Equity Interests: |  |  |  |  |  |  |  |  |  |  |  |
Limited Liability Companies and Limited Partnerships |  | 17.1 |  |  | (1.5 | ) |  | — |  |  | — |  |  | 17.1 |  |  | (1.5 | )
Total Equity Securities |  | 86.0 |  |  | (11.5 | ) |  | 5.1 |  |  | (0.7 | ) |  | 91.1 |  |  | (12.2 | )
Total |  | $ | 259.5 |  |  | $ | (16.7 | ) |  | $ | 94.6 |  |  | $ | (6.6 | ) |  | $ | 354.1 |  |  | $ | (23.3 | )
An aging of unrealized losses on the Company’s Investments in Fixed Maturities and Equity Securities at September 30, 2012 is presented below:
|  | Less Than 12 Months |  | 12 Months or Longer |  | Total
(Dollars in Millions) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Fixed Maturities: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government and Government Agencies and Authorities |  | $ | 40.0 |  |  | $ | (0.3 | ) |  | $ | — |  |  | $ | — |  |  | $ | 40.0 |  |  | $ | (0.3 | )
States and Political Subdivisions |  | — |  |  | — |  |  | 0.7 |  |  | — |  |  | 0.7 |  |  | — |
Corporate Securities: |  |  |  |  |  |  |  |  |  |  |  |
Bonds and Notes |  | 172.3 |  |  | (3.3 | ) |  | 40.3 |  |  | (3.1 | ) |  | 212.6 |  |  | (6.4 | )
Redeemable Preferred Stocks |  | — |  |  | — |  |  | 0.7 |  |  | (0.2 | ) |  | 0.7 |  |  | (0.2 | )
Mortgage and Asset-backed |  | 0.1 |  |  | — |  |  | 2.5 |  |  | (0.5 | ) |  | 2.6 |  |  | (0.5 | )
Total Fixed Maturities |  | 212.4 |  |  | (3.6 | ) |  | 44.2 |  |  | (3.8 | ) |  | 256.6 |  |  | (7.4 | )
Equity Securities: |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stocks: |  |  |  |  |  |  |  |  |  |  |  |
Finance, Insurance and Real Estate |  | — |  |  | — |  |  | 2.3 |  |  | (0.2 | ) |  | 2.3 |  |  | (0.2 | )
Other Industries |  | 0.9 |  |  | — |  |  | 3.7 |  |  | (0.1 | ) |  | 4.6 |  |  | (0.1 | )
Common Stocks: |  |  |  |  |  |  |  |  |  |  |  |
Manufacturing |  | 2.3 |  |  | (0.2 | ) |  | — |  |  | — |  |  | 2.3 |  |  | (0.2 | )
Other Industries |  | 4.7 |  |  | (0.3 | ) |  | 2.8 |  |  | (0.6 | ) |  | 7.5 |  |  | (0.9 | )
Other Equity Interests: |  |  |  |  |  |  |  |  |  |  |  |
Limited Liability Companies and Limited Partnerships |  | 8.0 |  |  | (0.8 | ) |  | 11.1 |  |  | (1.0 | ) |  | 19.1 |  |  | (1.8 | )
Total Equity Securities |  | 15.9 |  |  | (1.3 | ) |  | 19.9 |  |  | (1.9 | ) |  | 35.8 |  |  | (3.2 | )
Total |  | $ | 228.3 |  |  | $ | (4.9 | ) |  | $ | 64.1 |  |  | $ | (5.7 | ) |  | $ | 292.4 |  |  | $ | (10.6 | )
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block] | The following table sets forth the pre-tax amount of other-than-temporary-impairment (“OTTI”) credit losses, recognized in Retained Earnings for Investments in Fixed Maturities held by the Company as of the dates indicated, for which a portion of the OTTI loss has been recognized in Accumulated Other Comprehensive Income, and the corresponding changes in such amounts.
|  | Nine Months Ended |  | Three Months Ended
(Dollars in Millions) |  | Sep 30, 2012 |  | Sep 30, 2011 |  | Sep 30, 2012 |  | Sep 30, 2011
Balance at Beginning of Period |  | $ | 3.9 |  |  | $ | 2.4 |  |  | $ | 3.6 |  |  | $ | 2.1 |
Reductions to Previously Recognized OTTI Credit Losses |  | (0.1 | ) |  | (0.5 | ) |  | — |  |  | (0.2 | )
Reductions for Investments Sold During Period |  | (0.2 | ) |  | — |  |  | — |  |  | — |
Balance at End of Period |  | $ | 3.6 |  |  | $ | 1.9 |  |  | $ | 3.6 |  |  | $ | 1.9 |
Schedule of Other Investments [Table Text Block] | The carrying values of the Company’s Other Investments at September 30, 2012 and December 31, 2011 were:
(Dollars in Millions) |  | Sep 30, 2012 |  | Dec 31, 2011
Loans to Policyholders at Unpaid Principal |  | $ | 262.4 |  |  | $ | 253.9 |
Real Estate at Depreciated Cost |  | 232.6 |  |  | 239.4 |
Trading Securities at Fair Value |  | 4.5 |  |  | 4.4 |
Other |  | 0.6 |  |  | 0.6 |
Total |  | $ | 500.1 |  |  | $ | 498.3 |
Fixed Maturities [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Schedule of Available-for-sale Securities Reconciliation [Table Text Block] | The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2011 were:
|  | Amortized Cost |  | Gross Unrealized |  | Fair Value
(Dollars in Millions) |  | Gains |  | Losses |
U.S. Government and Government Agencies and Authorities |  | $ | 439.4 |  |  | $ | 52.3 |  |  | $ | — |  |  | $ | 491.7 |
States and Political Subdivisions |  | 1,705.0 |  |  | 148.4 |  |  | (0.8 | ) |  | 1,852.6 |
Corporate Securities: |  |  |  |  |  |  |  |
Bonds and Notes |  | 2,040.1 |  |  | 311.6 |  |  | (9.4 | ) |  | 2,342.3 |
Redeemable Preferred Stocks |  | 76.7 |  |  | 5.1 |  |  | (0.1 | ) |  | 81.7 |
Mortgage and Asset-backed |  | 4.9 |  |  | 1.0 |  |  | (0.8 | ) |  | 5.1 |
Investments in Fixed Maturities |  | $ | 4,266.1 |  |  | $ | 518.4 |  |  | $ | (11.1 | ) |  | $ | 4,773.4 |
The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at September 30, 2012 were:
|  | Amortized Cost |  | Gross Unrealized |  | Fair Value
(Dollars in Millions) |  | Gains |  | Losses |
U.S. Government and Government Agencies and Authorities |  | $ | 406.3 |  |  | $ | 50.6 |  |  | $ | (0.3 | ) |  | $ | 456.6 |
States and Political Subdivisions |  | 1,280.6 |  |  | 155.4 |  |  | — |  |  | 1,436.0 |
Corporate Securities: |  |  |  |  |  |  |  |
Bonds and Notes |  | 2,399.8 |  |  | 393.2 |  |  | (6.4 | ) |  | 2,786.6 |
Redeemable Preferred Stocks |  | 38.6 |  |  | 3.3 |  |  | (0.2 | ) |  | 41.7 |
Mortgage and Asset-backed |  | 4.2 |  |  | 1.0 |  |  | (0.5 | ) |  | 4.7 |
Investments in Fixed Maturities |  | $ | 4,129.5 |  |  | $ | 603.5 |  |  | $ | (7.4 | ) |  | $ | 4,725.6 |
Equity Securities [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Schedule of Available-for-sale Securities Reconciliation [Table Text Block] | Gross unrealized gains and gross unrealized losses on the Company’s Investments in Equity Securities at September 30, 2012 were:
|  |  |  | Gross Unrealized |  |
(Dollars in Millions) |  | Cost |  | Gains |  | Losses |  | Fair Value
Preferred Stocks: |  |  |  |  |  |  |  |
Finance, Insurance and Real Estate |  | $ | 80.4 |  |  | $ | 4.5 |  |  | $ | (0.2 | ) |  | $ | 84.7 |
Other Industries |  | 18.4 |  |  | 3.9 |  |  | (0.1 | ) |  | 22.2 |
Common Stocks: |  |  |  |  |  |  |  |
Manufacturing |  | 66.5 |  |  | 23.9 |  |  | (0.2 | ) |  | 90.2 |
Other Industries |  | 65.0 |  |  | 13.0 |  |  | (0.9 | ) |  | 77.1 |
Other Equity Interests: |  |  |  |  |  |  |  |
Exchange Traded Funds |  | 144.6 |  |  | 7.2 |  |  | — |  |  | 151.8 |
Limited Liability Companies and Limited Partnerships |  | 106.5 |  |  | 15.0 |  |  | (1.8 | ) |  | 119.7 |
Investments in Equity Securities |  | $ | 481.4 |  |  | $ | 67.5 |  |  | $ | (3.2 | ) |  | $ | 545.7 |
Gross unrealized gains and gross unrealized losses on the Company’s Investments in Equity Securities at December 31, 2011 were:
|  |  |  | Gross Unrealized |  |
(Dollars in Millions) |  | Cost |  | Gains |  | Losses |  | Fair Value
Preferred Stocks: |  |  |  |  |  |  |  |
Finance, Insurance and Real Estate |  | $ | 94.4 |  |  | $ | 1.0 |  |  | $ | (8.7 | ) |  | $ | 86.7 |
Other Industries |  | 18.0 |  |  | 2.6 |  |  | (0.1 | ) |  | 20.5 |
Common Stocks: |  |  |  |  |  |  |  |
Manufacturing |  | 64.6 |  |  | 18.9 |  |  | (0.1 | ) |  | 83.4 |
Other Industries |  | 41.4 |  |  | 7.4 |  |  | (1.8 | ) |  | 47.0 |
Other Equity Interests: |  |  |  |  |  |  |  |
Exchange Traded Funds |  | 66.0 |  |  | 0.6 |  |  | — |  |  | 66.6 |
Limited Liability Companies and Limited Partnerships |  | 82.9 |  |  | 11.7 |  |  | (1.5 | ) |  | 93.1 |
Investments in Equity Securities |  | $ | 367.3 |  |  | $ | 42.2 |  |  | $ | (12.2 | ) |  | $ | 397.3 |

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