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Investments Investments - Net Realized Gains on Sales of Investments (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Fixed Maturities [Member] |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Gains on Sales | $ 3.6 | $ 0.2 | $ 9.5 | $ 5.0
Losses on Sales | (0.1) | 0.0 | (0.7) | 0.0
Equity Securities [Member] |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Gains on Sales | 2.8 | 7.9 | 35.7 | 11.7
Losses on Sales | $ (0.7) | $ 0.0 | $ (1.4) | $ 0.0

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- Definition This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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- Definition This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities and excluding other than temporary impairments (OTTI), if any, recognized elsewhere. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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