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Acquisition of Platinum Purchase Price (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 30, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Mar. 15, 2016 | Mar. 02, 2015 | Mar. 01, 2015
Common Shares |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Dividends per common share, in usd per share | $ 0.31 | $ 0.31 | $ 0.31 | $ 0.31 | $ 0.31 |  |
Share price, in usd per share |  |  |  |  |  | $ 102.47 |
Platinum Underwriters Holdings, Ltd. |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Agreed cash price paid to common shareholders of Platinum and Platinum Awards, in usd per share |  |  |  |  |  | $ 76 |
Cash consideration paid by RenaissanceRe to common shareholders of Platinum and holders of Platinum equity awards |  |  |  |  |  | $ 1,160,000 |
Aggregate consideration transferred |  |  |  |  |  | 1,932,405 |
Total net purchase price paid by RenaissanceRe |  |  |  |  |  | $ 1,679,202 |
Platinum Underwriters Holdings, Ltd. | Common Shares |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum, in shares |  |  |  |  |  | 25,320,312 |
Shares issued |  |  |  |  |  | 7,434,561 |
Shares issued, value |  |  |  |  |  | $ 761,819 |
Fair value of Platinum common shares owned by RenaissanceRe and canceled in connection with the acquisition of Platinum |  |  |  |  |  | $ 12,950 |
Platinum common shares owned by RenaissanceRe and canceled in connection with the acquisition of Platinum, in shares |  |  |  |  |  | (169,220) |
Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum excluding those owned by RenaissanceRe and canceled in connection with the acquisition of Platinum, in shares |  |  |  |  |  | 25,151,092 |
Agreed cash price paid to common shareholders of Platinum and Platinum Awards, in usd per share |  |  |  |  |  | $ 35.96 |
Cash consideration paid by RenaissanceRe to common shareholders of Platinum and holders of Platinum equity awards |  |  |  |  |  | $ 904,433 |
Platinum Underwriters Holdings, Ltd. |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum, in shares |  |  |  |  |  |  | 25,320,312
Dividends per common share, in usd per share |  |  |  |  |  |  | $ 10
Dividends paid, value |  |  |  |  |  | $ (253,203) | $ (253,203)

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