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Financial Condition and Net Income on a Statutory Basis - Significant Subs (Tables) | 12 Months Ended
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Dec. 31, 2012
Statutory Basis [Abstract] |
Statutory Accounting Practices Disclosure [Table Text Block] |
| Statutory Capital & Surplus |  | Statutory Net Income (Loss)
|  | 2012 |  | 2011 |  | 2012 |  | 2011 |  | 2010
RGA Reinsurance | $ | 1,644,589 |  | $ | 1,515,934 |  | $ | 3,497 |  | $ | 129,717 |  | $ | 68,010
RCM |  | 1,692,200 |  |  | 1,478,864 |  |  | 58,549 |  |  | 37,142 |  |  | 53,690
RGA Canada |  | 725,738 |  |  | 610,142 |  |  | 95,861 |  |  | 102,229 |  |  | 68,561
RGA Barbados |  | 593,048 |  |  | 492,948 |  |  | 78,263 |  |  | 149,015 |  |  | 98,697
RGA Australia |  | 429,042 |  |  | 385,171 |  |  | 36,653 |  |  | 47,211 |  |  | 31,897
RGA Atlantic |  | 426,326 |  |  | 328,491 |  |  | 68,306 |  |  | 70,160 |  |  | 78,227
RGA Americas |  | 307,631 |  |  | 255,259 |  |  | 40,520 |  |  | 65,283 |  |  | 45,281
Other reinsurance subsidiaries |  | 811,684 |  |  | 620,790 |  |  | (442,414) |  |  | (439,625) |  |  | 80,287
Reconciliation Of NAIC SAP And Prescribed Practice [Text Block] |
|  |  | December 31,
|  |  | 2012 |  | 2011
| Prescribed practice – surplus note |  | $ | 230,291 |  | $ | 138,193
| Prescribed practice – letters of credit |  |  | (488,000) |  |  | (360,000)
| Surplus (deficit) – NAIC SAP |  | $ | (257,709) |  | $ | (221,807)

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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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- 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 55 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6588579&loc=d3e24938-158530 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-5 -Paragraph 8, 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 60 -Paragraph 60 -Subparagraph h -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 55 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6588579&loc=d3e24959-158530 Reference 7: http://www.xbrl.org/2003/role/presentationRef -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 8: http://www.xbrl.org/2003/role/presentationRef -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=6879938&loc=d3e572229-122910 + Details
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