XML 97 R83.htm IDEA: XBRL DOCUMENT
v3.19.1

Commitments, Contingencies and Guarantees (Guarantees Issued) (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Insurance Treaty Guarantee [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value | $ 1,481,172 | $ 1,392,352
Insurance Treaty Guarantee Net Of Assets Held In Trust [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value | 1,381,152 | 1,291,445
Guarantee Of Borrowed Securities [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value | 272,365 | 269,980
Product Financing Arrangement [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value | 57,801 | 61,273
Guarantee Of Lease Obligations [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value | $ 401 | $ 392

X
- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsCurrentCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_GuaranteeObligationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=rga_InsuranceTreatyGuaranteeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=rga_InsuranceTreatyGuaranteeNetOfAssetsHeldInTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=rga_GuaranteeOfBorrowedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_ProductFinancingArrangementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=rga_GuaranteeOfLeaseObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |