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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2014
Earnings Per Share [Abstract] |
Schedule Of Computation Of Basic And Diluted Earnings Per Common Share | The following table sets forth the computation of basic and diluted earnings per common share:
| Year ended December 31, | 2014 |  | 2013 |  | 2012 |
| (thousands of shares) |  |  |  |  |  |
| Numerator: |  |  |  |  |  |
| Net income available to RenaissanceRe common shareholders | $ | 510,337 |  |  | $ | 665,676 |  |  | $ | 566,014 |  |
| Amount allocated to participating common shareholders (1) | (6,760 | ) |  | (9,520 | ) |  | (8,973 | ) |
| Net income allocated to RenaissanceRe common shareholders | $ | 503,577 |  |  | $ | 656,156 |  |  | $ | 557,041 |  |
| Denominator: |  |  |  |  |  |
| Denominator for basic income per RenaissanceRe common share - weighted average common shares | 39,425 |  |  | 43,349 |  |  | 48,873 |  |
| Per common share equivalents of employee stock options and restricted shares | 543 |  |  | 779 |  |  | 730 |  |
| Denominator for diluted income per RenaissanceRe common share - adjusted weighted average common shares and assumed conversions | 39,968 |  |  | 44,128 |  |  | 49,603 |  |
| Basic income per RenaissanceRe common share | $ | 12.77 |  |  | $ | 15.14 |  |  | $ | 11.40 |  |
| Diluted income per RenaissanceRe common share | $ | 12.60 |  |  | $ | 14.87 |  |  | $ | 11.23 |  |
(1) | Represents earnings attributable to holders of unvested restricted shares issued under the Company’s 2001 Stock Incentive Plan and the Non-Employee Director Stock Incentive Plan.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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