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Supplemental Schedule of Reinsurance (Tables) | 12 Months Ended
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Dec. 31, 2020
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract] |
Supplemental Schedule Of Reinsurance Premiums For Insurance Companies [Table Text Block] | REINSURANCE GROUP OF AMERICA, INCORPORATED SCHEDULE IV—REINSURANCE (in millions)
|  | As of or for the Year ended December 31,
|  | Gross Amount |  | Ceded to Other Companies |  | Assumed from Other Companies |  | Net Amounts |  | Percentage of Amount Assumed to Net
2020 |  |  |  |  |  |  |  |  |  |
Life insurance in force |  | $ | 1,990 |  |  | $ | 184,625 |  |  | $ | 3,480,692 |  |  | $ | 3,298,057 |  |  | 105.5 | %
Premiums |  |  |  |  |  |  |  |  |  |
U.S. and Latin America: |  |  |  |  |  |  |  |  |  |
Traditional |  | $ | 23 |  |  | $ | 585 |  |  | $ | 6,399 |  |  | $ | 5,837 |  |  | 109.6 | %
Financial Solutions |  | 3 |  |  | — |  |  | 50 |  |  | $ | 53 |  |  | 94.3 |
Canada: |  |  |  |  |  |  |  |  |  |
Traditional |  | — |  |  | 54 |  |  | 1,106 |  |  | $ | 1,052 |  |  | 105.1 |
Financial Solutions |  | — |  |  | — |  |  | 83 |  |  | $ | 83 |  |  | 100.0 |
Europe, Middle East and Africa: |  |  |  |  |  |  |  |  |  |
Traditional |  | 32 |  |  | 24 |  |  | 1,548 |  |  | $ | 1,556 |  |  | 99.5 |
Financial Solutions |  | — |  |  | 178 |  |  | 430 |  |  | $ | 252 |  |  | 170.6 |
Asia Pacific: |  |  |  |  |  |  |  |  |  |
Traditional |  | — |  |  | 106 |  |  | 2,787 |  |  | $ | 2,681 |  |  | 104.0 |
Financial Solutions |  | — |  |  | — |  |  | 180 |  |  | $ | 180 |  |  | 100.0 |
Total |  | $ | 58 |  |  | $ | 947 |  |  | $ | 12,583 |  |  | $ | 11,694 |  |  | 107.6 |
2019 |  |  |  |  |  |  |  |  |  |
Life insurance in force |  | $ | 1,316 |  |  | $ | 192,864 |  |  | $ | 3,480,206 |  |  | $ | 3,288,658 |  |  | 105.8 | %
Premiums |  |  |  |  |  |  |  |  |  |
U.S. and Latin America: |  |  |  |  |  |  |  |  |  |
Traditional |  | $ | 29 |  |  | $ | 591 |  |  | $ | 6,291 |  |  | 5,729 |  |  | 109.8 | %
Financial Solutions |  | 2 |  |  | — |  |  | 37 |  |  | 39 |  |  | 95.4 |
Canada: |  |  |  |  |  |  |  |  |  |
Traditional |  | — |  |  | 54 |  |  | 1,120 |  |  | 1,066 |  |  | 105.0 |
Financial Solutions |  | — |  |  | — |  |  | 89 |  |  | 89 |  |  | 100.0 |
Europe, Middle East and Africa: |  |  |  |  |  |  |  |  |  |
Traditional |  | 45 |  |  | 52 |  |  | 1,449 |  |  | 1,442 |  |  | 100.6 |
Financial Solutions |  | — |  |  | 148 |  |  | 366 |  |  | 218 |  |  | 167.9 |
Asia Pacific: |  |  |  |  |  |  |  |  |  |
Traditional |  | — |  |  | 84 |  |  | 2,652 |  |  | 2,568 |  |  | 103.2 |
Financial Solutions |  | — |  |  | — |  |  | 146 |  |  | 146 |  |  | 100.0 |
Total |  | $ | 76 |  |  | $ | 929 |  |  | $ | 12,150 |  |  | $ | 11,297 |  |  | 107.5 |
2018 |  |  |  |  |  |  |  |  |  |
Life insurance in force |  | $ | 1,363 |  |  | $ | 186,172 |  |  | $ | 3,329,181 |  |  | $ | 3,144,372 |  |  | 105.9 | %
Premiums |  |  |  |  |  |  |  |  |  |
U.S. and Latin America: |  |  |  |  |  |  |  |  |  |
Traditional |  | $ | 32 |  |  | $ | 593 |  |  | $ | 6,095 |  |  | $ | 5,534 |  |  | 110.2 | %
Financial Solutions |  | 5 |  |  | — |  |  | 22 |  |  | 27 |  |  | 82.7 |
Canada: |  |  |  |  |  |  |  |  |  |
Traditional |  | — |  |  | 47 |  |  | 1,071 |  |  | 1,024 |  |  | 104.6 |
Financial Solutions |  | — |  |  | — |  |  | 43 |  |  | 43 |  |  | 100.0 |
Europe, Middle East and Africa: |  |  |  |  |  |  |  |  |  |
Traditional |  | 26 |  |  | 26 |  |  | 1,424 |  |  | 1,424 |  |  | 100.0 |
Financial Solutions |  | — |  |  | 144 |  |  | 339 |  |  | 195 |  |  | 173.5 |
Asia Pacific: |  |  |  |  |  |  |  |  |  |
Traditional |  | — |  |  | 50 |  |  | 2,346 |  |  | 2,296 |  |  | 102.2 |
Financial Solutions |  | — |  |  | — |  |  | 1 |  |  | 1 |  |  | 100.0 |
Total |  | $ | 63 |  |  | $ | 860 |  |  | $ | 11,341 |  |  | $ | 10,544 |  |  | 107.6 |

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