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Acquisition of Platinum Fair Value of Net Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 02, 2015 | Mar. 01, 2015 | Jun. 30, 2015 | Dec. 31, 2014
Business Acquisition [Line Items] |  |  |  |
Shareholders’ equity of Platinum prior to Special Dividend |  |  | $ 4,836,944 | $ 3,865,715
Platinum |  |  |  |
Adjustments for Fair Value, By Applicable Balance Sheet Caption [Abstract] |  |  |  |
Deferred acquisition costs | $ (44,486) |  |  |
Debt | (28,899) |  |  |
Reserve for claims and claim expenses | (21,725) |  |  |
Other assets - deferred debt issuance costs | (1,046) |  |  |
Total adjustments for fair value by applicable balance sheet caption before tax impact | (96,156) |  |  |
Other assets - net deferred tax asset related to fair value adjustments | 29,069 |  |  |
Total adjustments for fair value by applicable balance sheet caption | (67,087) |  |  |
Adjustments for Fair Value of the Identifiable Intangible Assets [Abstract] |  |  |  |
Identifiable indefinite lived intangible assets (insurance licenses) | 8,400 |  |  |
Identifiable finite lived intangible assets (non-contractual relationships, renewal rights, value of business acquired, trade name, internally developed and used computer software and covenants not to compete) | 75,200 |  |  |
Identifiable intangible assets before tax impact |  | $ 83,600 |  |
Total adjustments for fair value of the identifiable intangible assets | (13,115) |  |  |
Total adjustments for fair value of the identifiable intangible assets | 70,485 |  |  |
Total adjustments for fair value by applicable balance sheet caption and identifiable intangible assets | 3,398 |  |  |
Shareholders’ equity of Platinum at fair value | 1,487,473 |  |  |
Total net purchase price paid by RenaissanceRe | 1,679,202 |  |  |
Excess purchase price over the fair value of net assets acquired assigned to goodwill | 191,729 |  |  |
Platinum |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Shareholders’ equity of Platinum prior to Special Dividend |  | 1,737,278 |  |
Cash and cash equivalents (Special Dividend on Platinum common shares and Platinum equity awards) | (253,203) | $ (253,203) |  |
Adjusted shareholders’ equity of Platinum at March 2, 2015 | $ 1,484,075 |  |  |

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