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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Schedule Of Earnings Per Share Basic And Diluted By Common Class [Table Text Block] | The following table sets forth the computation of basic and diluted earnings per share on net income (in millions, except per share information):
|  | 2023 |  | 2022 |  | 2021
Earnings: |  |  |  |  |  |
Net income (numerator for basic and diluted calculations) |  | $ | 909 |  |  | $ | 521 |  |  | $ | 1,170 |
Less: Net income attributable to noncontrolling interest |  | 7 |  |  | 4 |  |  | — |
Net income available to RGA, Inc. shareholders |  | $ | 902 |  |  | $ | 517 |  |  | $ | 1,170 |
Shares: |  |  |  |  |  |
Weighted average outstanding shares (denominator for basic calculations) |  | 66.3 |  |  | 66.9 |  |  | 67.8 |
Equivalent shares from outstanding stock awards |  | 0.8 |  |  | 0.8 |  |  | 0.5 |
Diluted shares (denominator for diluted calculations) |  | 67.1 |  |  | 67.7 |  |  | 68.3 |
Earnings per share: |  |  |  |  |  |
Basic |  | $ | 13.60 |  |  | $ | 7.73 |  |  | $ | 17.26 |
Diluted |  | 13.44 |  |  | 7.64 |  |  | 17.13 |

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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/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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