Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of liability recognized arising from contingent consideration in a business combination.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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The cash outflow associated with the acquisition of a controlling interest in another entity or an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, joint venture or equity method investment).

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Number of lines of business

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Percentage of gross profit

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Premiums Written, Percentage of Total

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Significant Transactions (Details) In Millions, unless otherwise specified	3 Months Ended					3 Months Ended				2 Months Ended		1 Months Ended				3 Months Ended		2 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Mar. 31, 2015 Star & Shield Insurance Exchange USD ($)	Mar. 31, 2014 QuoteLab USD ($)	Mar. 31, 2015 QuoteLab USD ($)	Dec. 31, 2014 QuoteLab USD ($)	Mar. 14, 2014 QuoteLab USD ($)	Feb. 19, 2014 WOBI USD ($) business	Mar. 31, 2015 WOBI	Jan. 31, 2014 Star & Shield LLC [Member] USD ($)	Mar. 14, 2014 Common Class A QuoteLab	Feb. 23, 2015 Common Stock Cashboard [Member]	Feb. 19, 2014 Common Stock WOBI	Mar. 31, 2015 Non-controlling interest Star & Shield Insurance Exchange USD ($)	Mar. 31, 2014 Non-controlling interest Star & Shield Insurance Exchange USD ($)	Feb. 19, 2014 Israel, New Shekels Preferred Stock WOBI ILS	Feb. 23, 2015 Israel, New Shekels Common Stock Cashboard [Member] ILS	Feb. 19, 2014 Israel, New Shekels Common Stock WOBI ILS	Feb. 19, 2014 United States of America, Dollars Preferred Stock WOBI USD ($)	Feb. 23, 2015 United States of America, Dollars Common Stock Cashboard [Member] USD ($)	Feb. 19, 2014 United States of America, Dollars Common Stock WOBI USD ($)	Feb. 23, 2015 Cashboard [Member] USD ($)	Feb. 19, 2014 WOBI USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Business Combination, Contingent Consideration, Liability							$ 7.9	$ 7.9
Ownership interest (as a percent)											63.30%		60.00%	56.20%	54.00%
Payments to Acquire Businesses and Interest in Affiliates	2.4	32.2				28.1						1.8						31.5	9.5	14.4	9.0	2.4	4.1
Premiums Written, Percentage of Total										85.00%
Number of lines of business										4
Purchase of Surplus Notes					19.0
Percentage of gross profit									62.50%
Assets	10,507.8us-gaap_Assets		10,455.7us-gaap_Assets		16.0				70.1															5.5	13.4
Goodwill	169.2us-gaap_Goodwill	23.8us-gaap_Goodwill	168.9us-gaap_Goodwill	0us-gaap_Goodwill					18.3	5.5														0.3
Intangible Assets, Net (Excluding Goodwill)	193.4	62.4	197.5	20.7																				2.8	2.9
Goodwill and intangible assets	362.6		366.4						38.5
Liabilities	5,968.0us-gaap_Liabilities		5,917.3us-gaap_Liabilities		29.5				10.0	0.7														1.2
Net Income (Loss) Attributable to Noncontrolling Interest	$ 7.3	$ 0.6														$ 1.1	$ 4.6