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Financial Condition and Net Income on a Statutory Basis - Significant Subsidiaries (Tables) | 12 Months Ended
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Dec. 31, 2021
Statutory Basis [Abstract] |
Statutory Accounting Practices Disclosure [Table Text Block] | Statutory net income and capital and surplus of the Company’s primary operating insurance subsidiaries, determined in accordance with statutory accounting practices prescribed by the applicable state insurance department or local regulatory authority are as follows (dollars in millions):
|  | Statutory Capital and Surplus |  | Statutory Net Income (Loss)
|  | 2021 |  | 2020 |  | 2021 |  | 2020 |  | 2019
RGA Americas Reinsurance Company, Ltd. |  | $ | 6,812 |  |  | $ | 8,249 |  |  | $ | (241) |  |  | $ | 879 |  |  | $ | 1,049 |
RGA Reinsurance Company |  | 2,368 |  |  | 2,131 |  |  | (98) |  |  | (133) |  |  | 280 |
Reinsurance Company of Missouri, Incorporated |  | 2,362 |  |  | 2,136 |  |  | (13) |  |  | 4 |  |  | 75 |
RGA Reinsurance Company (Barbados) Ltd. |  | 1,781 |  |  | 1,835 |  |  | 52 |  |  | 268 |  |  | 234 |
RGA Atlantic Reinsurance Company Ltd. |  | 1,137 |  |  | 1,441 |  |  | (226) |  |  | 175 |  |  | 243 |
RGA International Reinsurance Company dac |  | 1,121 |  |  | 1,460 |  |  | 43 |  |  | 52 |  |  | 37 |
RGA Life Reinsurance Company of Canada |  | 903 |  |  | 886 |  |  | 25 |  |  | 152 |  |  | (225) |
RGA Worldwide Reinsurance Company, Ltd. |  | 702 |  |  | 703 |  |  | 10 |  |  | 104 |  |  | 106 |
RGA Global Reinsurance Company, Ltd. |  | 565 |  |  | 495 |  |  | 93 |  |  | 59 |  |  | 71 |
RGA Reinsurance Company of Australia Limited |  | 485 |  |  | 535 |  |  | (22) |  |  | 42 |  |  | 15 |
Other |  | 1,015 |  |  | 1,298 |  |  | (152) |  |  | 194 |  |  | 114 |
Reconciliation Of NAIC SAP And Prescribed Practice [Text Block] | A reconciliation of the surplus between NAIC SAP and practices prescribed by the state of domicile is shown below (dollars in millions):
|  | December 31,
|  | 2021 |  | 2020
Prescribed practice – surplus |  | $ | 403 |  |  | $ | 577 |
Prescribed practice – letters of credit |  | (461) |  |  | (461) |
Surplus (deficit) – NAIC SAP |  | $ | (58) |  |  | $ | 116 |

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- Definition Table that provides a reconciliation of certain subsidiaries National Association of Insurance Commissioners stautory accounting practices (NAIC SAP) and practices prescribed by state of domicile. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Tabular disclosure of how the entity's reporting under GAAP as of the balance sheet date differs from the results based on prescribed and permitted accounting practices of the state or country of domicile in which a relevant statutory filing is made, or differences in results based on the National Association of Insurance Commissioners (NAIC) prescribed practices, or a combination thereof. Describes the accounting practices used and the related monetary effect on statutory surplus, net income, and risk-based capital. If an insurance enterprise's risk-based capital would have triggered a regulatory event had it not used a permitted practice, that fact is disclosed in the financial statements. Permitted statutory accounting practices include practices not prescribed but allowed by the domiciliary state insurance department regulatory authority. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.23(c)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24790-158529 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24746-158529 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 55 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82848697&loc=d3e24959-158530 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 55 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82848697&loc=d3e24938-158530 + Details
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