XML 119 R102.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Fair Value of Assets and Liabilities (Narrative) (Details) | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Fair Value Disclosures [Abstract] |  |
Percentage Of Fixed Maturity Securities Classified As Level 3 | 6.90% | 8.20%

X
- Definition Percentage of fixed maturity securities classified as Level 3 + References No definition available. + Details
Name: | rga_PercentageOfFixedMaturitySecuritiesClassifiedAsLevel3
Namespace Prefix: | rga_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration