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Acquisition of Platinum Financial Results (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Business Acquisition [Line Items] |  |  |  |  |
Revenues | $ 397,567 |  | $ 331,174 | $ 779,487 | $ 674,783
Net income available to RenaissanceRe common shareholders | 73,233 |  | $ 120,752 | 241,076 | $ 271,755
Platinum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Transaction-related costs |  | $ 6,700 |  | 48,200 |
Revenues | 106,691 |  |  | 146,830 |
Net income available to RenaissanceRe common shareholders | 5,004 |  |  | (14,435) |
Platinum | Platinum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Transaction-related costs | $ 5,800 |  |  | $ 34,200 |

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