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Acquisition of Tokio Millennium Re (Purchase Price) (Details) - TMR Group Entities - USD ($) $ / shares in Units, $ in Thousands | Mar. 22, 2019 | Mar. 15, 2019
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Business Acquisition [Line Items] |  |
Special Dividend paid to common shareholders of Tokio and holders of Tokio equity awards | $ 500,000 |
Common shares issued by RenaissanceRe to Tokio (in shares) | 1,739,071 |
Common share price of RenaissanceRe (in dollars per share) | $ 143.75 | $ 143.7539
Market value of RenaissanceRe common shares issued by RenaissanceRe to Tokio | $ 249,998 |
Cash consideration paid by RenaissanceRe as acquisition consideration | 813,595 |
Total purchase price | 1,563,593 |
Less: Special Dividend paid to Tokio | (500,000) |
Net purchase price | $ 1,063,593 |
Common share price, trading volume, term | 30 days |

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