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Acquisition of Business Value of Intangible Assets Acquired (Details) - USD ($) $ in Millions | 9 Months Ended |
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Sep. 30, 2015 | Apr. 30, 2015
Broker Relationships [Member] |  |
Schedule of Intangible Assets Acquired by Class [Line Items] |  |
Finite-Lived Intangible Assets, Remaining Amortization Period | 15 years |
Minimum [Member] |  |
Schedule of Intangible Assets Acquired by Class [Line Items] |  |
Finite-Lived Intangible Assets, Remaining Amortization Period | 2 years |
Maximum [Member] |  |
Schedule of Intangible Assets Acquired by Class [Line Items] |  |
Finite-Lived Intangible Assets, Remaining Amortization Period | 5 years |
Intangible Assets Other Than Intangible Assets Arising from Insurance Contracts Acquired [Member] |  |
Schedule of Intangible Assets Acquired by Class [Line Items] |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | $ 23.6 | $ 32.6
Other Intangible Assets [Member] |  |
Schedule of Intangible Assets Acquired by Class [Line Items] |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 3.9 | 4.5
Broker Relationships [Member] |  |
Schedule of Intangible Assets Acquired by Class [Line Items] |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 18.4 | 18.9
Intangible Assets Arising from Insurance Contracts Acquired in Business Combination [Member] |  |
Schedule of Intangible Assets Acquired by Class [Line Items] |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | $ 1.3 | $ 9.2

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- Definition [Line Items] for Schedule of Intangible Assets Acquired by Class [Table] + References No definition available. + Details
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- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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- Definition Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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