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Investments (Tables)
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9 Months Ended |
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Sep. 30, 2012
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| Schedule of Available-for-sale Securities [Line Items] |
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| 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 |
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| 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 | ) |
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| 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 |
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| 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 |
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Fixed Maturities [Member]
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| Schedule of Available-for-sale Securities [Line Items] |
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| 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 |
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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 |
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Equity Securities [Member]
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|
| Schedule of Available-for-sale Securities [Line Items] |
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| 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 |
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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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