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Business Segments - Segment Information (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 segments | Sep. 30, 2013
Segment Reporting Information [Line Items] |  |  |  |
Number of Operating Segments |  |  | 2 |
Earned Premiums | $ 462.8 | $ 507.5 | $ 1,410.7 | $ 1,530.2
Net Investment Income | 72.3 | 82.4 | 216.0 | 237.8
Other Income | 0.5 | 0.1 | 0.8 | 0.5
Total Revenues | 539.8 | 635.7 | 1,636.9 | 1,840.5
Net Realized Gains on Sales of Investments | 8.0 | 49.1 | 18.1 | 78.3
Segment Operating Profit (Loss) | (0.2) | 56.3 | 57.7 | 161.0
Net Impairment Losses Recognized in Earnings | (3.8) | (3.4) | (8.7) | (6.3)
Income from Continuing Operations before Income Taxes | 4.0 | 102.0 | 67.1 | 233.0
Segment Net Operating Income (Loss) | 2.1 | 38.9 | 43.2 | 112.9
Income from Continuing Operations | 4.8 | 68.6 | 49.3 | 159.7
Corporate, Non-Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment Operating Profit (Loss) | (7.7) | (11.1) | (24.1) | (35.3)
Segment Net Operating Income (Loss) | (4.6) | (7.4) | (14.7) | (23.0)
Segment Reconciling Items [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Other Income | 4.6 | 4.6 | 13.0 | 10.6
Net Realized Gains on Sales of Investments | 8.0 | 49.1 | 18.1 | 78.3
Net Impairment Losses Recognized in Earnings | (3.8) | (3.4) | (8.7) | (6.3)
Net Realized Gains (Losses) on Sales of Investments, Net of Tax | 5.2 | 31.9 | 11.8 | 50.9
Net Impairment Losses Recognized in Earnings, Net of Tax | (2.5) | (2.2) | (5.7) | (4.1)
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues | 531.0 | 585.4 | 1,614.5 | 1,757.9
Segment Operating Profit (Loss) | 7.5 | 67.4 | 81.8 | 196.3
Segment Net Operating Income (Loss) | 6.7 | 46.3 | 57.9 | 135.9
Operating Segments [Member] | Property and Casualty Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 309.7 | 348.7 | 949.5 | 1,054.7
Net Investment Income | 18.5 | 21.3 | 55.6 | 67.9
Other Income | 0.1 | 0.1 | 0.4 | 0.4
Total Revenues | 328.3 | 370.1 | 1,005.5 | 1,123.0
Segment Operating Profit (Loss) | (23.9) | 32.2 | (8.9) | 98.0
Segment Net Operating Income (Loss) | (13.6) | 23.4 | (0.4) | 71.5
Operating Segments [Member] | Life and Health Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 153.1 | 158.8 | 461.2 | 475.5
Net Investment Income | 49.2 | 56.5 | 147.4 | 159.3
Other Income | 0.4 | 0 | 0.4 | 0.1
Total Revenues | 202.7 | 215.3 | 609.0 | 634.9
Segment Operating Profit (Loss) | 31.4 | 35.2 | 90.7 | 98.3
Segment Net Operating Income (Loss) | $ 20.3 | $ 22.9 | $ 58.3 | $ 64.4

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- Definition Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net of Tax + References No definition available. + Details
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- Definition This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph ((b)(7)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 + Details
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- Definition Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 16 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.2) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 2 -Article 7 + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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- Definition The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -URI http://asc.fasb.org/extlink&oid=27724398&loc=SL6284393-111563 + Details
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- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.1) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1 -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(c)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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