XML 43 R30.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Reinsurance (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2018
Retrocession Arrangements And Reinsurance Ceded Receivables [Abstract] |
Ceded Credit Risk [Table Text Block] | The following table presents information for the Company’s reinsurance ceded receivable assets, including the respective amount and A.M. Best rating for each reinsurer representing in excess of five percent of the total as of March 31, 2018 and December 31, 2017 (dollars in thousands):
|  |  |  | March 31, 2018 |  | December 31, 2017
Reinsurer |  | A.M. Best Rating |  | Amount |  | % of Total |  | Amount |  | % of Total
Reinsurer A |  | A+ |  | $ | 317,136 |  |  | 39.1 | % |  | $ | 301,478 |  |  | 38.6 | %
Reinsurer B |  | A+ |  | 203,137 |  |  | 25.1 |  |  | 203,898 |  |  | 26.1 |
Reinsurer C |  | A |  | 69,434 |  |  | 8.6 |  |  | 67,723 |  |  | 8.7 |
Reinsurer D |  | A++ |  | 42,967 |  |  | 5.3 |  |  | 40,592 |  |  | 5.2 |
Reinsurer E |  | A+ |  | 42,538 |  |  | 5.2 |  |  | 40,528 |  |  | 5.2 |
Other reinsurers |  |  |  | 135,342 |  |  | 16.7 |  |  | 127,808 |  |  | 16.2 |
Total |  |  |  | $ | 810,554 |  |  | 100.0 | % |  | $ | 782,027 |  |  | 100.0 | %

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

X
- Definition Tabular disclosure of reinsurer or group of reinsurers for whom the entity has a concentration of credit risk. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 825 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=75027451&loc=SL29635902-196195 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611 + Details
Name: | us-gaap_ScheduleOfCededCreditRiskByReinsurerTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration