XML 85 R84.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Commitments and Contingent Liabilities (Narrative) (Details) $ in Millions | Sep. 30, 2015 USD ($) credit_facilities | Dec. 31, 2014 USD ($)
--- | --- | ---
Commitments And Contingent Liabilities [Line Items] |  |
Undrawn outstanding letters of credit in favor of third parties | $ 146.2 | $ 176.5
Undrawn outstanding letters of credit between subsidiaries | $ 1,104.6 | $ 1,035.0
Number of credit facilities | credit_facilities | 7 |
Credit Facility 850 Million [Member] |  |
Commitments And Contingent Liabilities [Line Items] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 850.0 |
Letter of Credit [Member] |  |
Commitments And Contingent Liabilities [Line Items] |  |
Number of credit facilities | credit_facilities | 6 |
Line of Credit Facility, Maximum Borrowing Capacity | $ 651.3 |

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

X
- Definition Number of credit facilities + References No definition available. + Details
Name: | rga_Numberofcreditfacilities
Namespace Prefix: | rga_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Undrawn outstanding letters of credit between subsidiaries of the Company. + References No definition available. + Details
Name: | rga_UndrawnOutstandingLettersOfCreditBetweenSubsidiaries
Namespace Prefix: | rga_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Undrawn outstanding letters of credit in favor of third parties. + References No definition available. + Details
Name: | rga_UndrawnOutstandingLettersOfCreditInFavorOfThirdParties
Namespace Prefix: | rga_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_CreditFacilityAxis=rga_CreditFacility850MillionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |