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Financial Condition and Net Income on a Statutory Basis - Significant Subs (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Statutory Accounting Practices [Line Items] |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | $ 35,000,000 |  |
Number Of Preceeding Months To Accumulate Dividend Paid For Approval | 12 |  |
Future Dividend Payment Restricted To Such Percent Of Surplus To Policy Holders | 10.00% |  |
RCM [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 1,692,200,000 | 1,478,864,000 |
Statutory Accounting Practices, Statutory Net Income Amount | 58,549,000 | 37,142,000 | 53,690,000
RGA Reinsurance [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 1,644,589,000 | 1,515,934,000 |
Statutory Accounting Practices, Statutory Net Income Amount | 3,497,000 | 129,717,000 | 68,010,000
RGA Canada [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 725,738,000 | 610,142,000 |
Statutory Accounting Practices, Statutory Net Income Amount | 95,861,000 | 102,229,000 | 68,561,000
RGA Barbados [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 593,048,000 | 492,948,000 |
Statutory Accounting Practices, Statutory Net Income Amount | 78,263,000 | 149,015,000 | 98,697,000
RGA Australia [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 429,042,000 | 385,171,000 |
Statutory Accounting Practices, Statutory Net Income Amount | 36,653,000 | 47,211,000 | 31,897,000
RGA Atlantic [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 426,326,000 | 328,491,000 |
Statutory Accounting Practices, Statutory Net Income Amount | 68,306,000 | 70,160,000 | 78,227,000
RGA Americas [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 307,631,000 | 255,259,000 |
Statutory Accounting Practices, Statutory Net Income Amount | 40,520,000 | 65,283,000 | 45,281,000
Other Reinsurance Subsidiaries [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 811,684,000 | 620,790,000 |
Statutory Accounting Practices, Statutory Net Income Amount | $ (442,414,000) | $ (439,625,000) | $ 80,287,000

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- Definition Restriction as to percent of the Company's surplus to policyholders for future dividend payment. + References No definition available. + Details
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- Definition The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529 Reference 3: 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 4: 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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 7 -Section 03 -Paragraph 24 -Subparagraph c + Details
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