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Earnings Per Share | 6 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Earnings Per Share | EARNINGS PER SHARE The following table sets forth the computation of basic and diluted earnings per common share:
|  | Three months ended |  | Six months ended |
| (common shares in thousands) | June 30, 2021 |  | June 30, 2020 |  | June 30, 2021 |  | June 30, 2020 |
| Numerator: |  |  |  |  |  |  |  |
| Net income available to RenaissanceRe common shareholders | $ | 456,818 |  |  | $ | 575,845 |  |  | $ | 165,884 |  |  | $ | 493,871 |  |
| Amount allocated to participating common shareholders (1) | (5,809) |  |  | (7,593) |  |  | (1,864) |  |  | (6,153) |  |
| Net income available to RenaissanceRe common shareholders | $ | 451,009 |  |  | $ | 568,252 |  |  | $ | 164,020 |  |  | $ | 487,718 |  |
| Denominator: |  |  |  |  |  |  |  |
| Denominator for basic loss per RenaissanceRe common share - weighted average common shares | 48,163 |  |  | 44,939 |  |  | 48,871 |  |  | 44,190 |  |
| Per common share equivalents of employee stock options and non-vested shares | 63 |  |  | 64 |  |  | 69 |  |  | 63 |  |
| Denominator for diluted loss per RenaissanceRe common share - adjusted weighted average common shares and assumed conversions | 48,226 |  |  | 45,003 |  |  | 48,940 |  |  | 44,253 |  |
| Net income available to RenaissanceRe common shareholders per common share – basic | $ | 9.36 |  |  | $ | 12.64 |  |  | $ | 3.36 |  |  | $ | 11.04 |  |
| Net income available to RenaissanceRe common shareholders per common share – diluted | $ | 9.35 |  |  | $ | 12.63 |  |  | $ | 3.35 |  |  | $ | 11.02 |  |
(1)Represents earnings and dividends attributable to holders of unvested shares issued pursuant to the Company's stock compensation plans.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257 + Details
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