v2.4.0.6

Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2012
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:
| Three months ended June 30, | 2012 |  | 2011 |
| (thousands of shares) |  |  |  |
| Numerator: |  |  |  |
| Net income available to RenaissanceRe common shareholders | $ | 142,270 |  |  | $ | 24,764 |  |
| Amount allocated to participating common shareholders (1) | (2,236 | ) |  | (461 | ) |
| Net income allocated to RenaissanceRe common shareholders | $ | 140,034 |  |  | $ | 24,303 |  |
| Denominator: |  |  |  |
| Denominator for basic income per RenaissanceRe common share - weighted average common shares | 50,278 |  |  | 50,493 |  |
| Per common share equivalents of employee stock options and restricted shares | 734 |  |  | 557 |  |
| Denominator for diluted income per RenaissanceRe common share - adjusted weighted average common shares and assumed conversions | 51,012 |  |  | 51,050 |  |
| Basic income per RenaissanceRe common share | $ | 2.78 |  |  | $ | 0.48 |  |
| Diluted income per RenaissanceRe common share | $ | 2.75 |  |  | $ | 0.48 |  |
| Six months ended June 30, | 2012 |  | 2011 |
| (thousands of shares) |  |  |  |
| Numerator: |  |  |  |
| Net income (loss) available (attributable) to RenaissanceRe common shareholders | $ | 343,699 |  |  | $ | (223,269 | ) |
| Amount allocated to participating common shareholders (1) | (5,601 | ) |  | (514 | ) |
| Net income (loss) allocated to RenaissanceRe common shareholders | $ | 338,098 |  |  | $ | (223,783 | ) |
| Denominator: |  |  |  |
| Denominator for basic income (loss) per RenaissanceRe common share - weighted average common shares | 50,328 |  |  | 50,994 |  |
| Per common share equivalents of employee stock options and restricted shares | 669 |  |  | — |  |
| Denominator for diluted income (loss) per RenaissanceRe common share - adjusted weighted average common shares and assumed conversions | 50,997 |  |  | 50,994 |  |
| Basic income (loss) per RenaissanceRe common share | $ | 6.72 |  |  | $ | (4.39 | ) |
| Diluted income (loss) per RenaissanceRe common share | $ | 6.63 |  |  | $ | (4.39 | ) |
(1) | Represents earnings attributable to holders of unvested restricted shares issued under the Company’s 2001 Stock Incentive Plan and Non-Employee Director Stock Incentive Plan.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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