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Investments in Unconsolidated Affiliates (Investment in Unconsolidated Affiliates Table) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended
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Sep. 30, 2016 | Sep. 30, 2015 | Jun. 30, 2015 | Jun. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Investments in unconsolidated affiliates |  |  |  |  |  |
Equity in earnings of unconsolidated affiliates, net of tax | $ 0.0 | $ 3.9 |  |  | $ 0.0 | $ 18.0
Symetra | Common Stock |  |  |  |  |  |
Investments in unconsolidated affiliates |  |  |  |  |  |
Equity in earnings of unconsolidated affiliates, net of tax |  | $ 4.2 |  |  |  | $ 17.5
Hamer, LLC [Member] |  |  |  |  |  |
Investments in unconsolidated affiliates |  |  |  |  |  |
Equity in earnings of unconsolidated affiliates, net of tax |  |  | $ 1.1 | $ 1.6 |  |

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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + 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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