XML 92 R79.htm IDEA: XBRL DOCUMENT
v3.22.1

Commitments, Contingencies and Guarantees (Maximum Potential Obligation) (Details) $ in Millions | Mar. 31, 2022 USD ($)
--- | ---
Commitment Period Two Thousand Thirty Four [Member] |
Other Commitments [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 1,243
Commitment Period Two Thousand Thirty Five [Member] |
Other Commitments [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | 2,678
Commitment Period Two Thousand Thirty Six [Member] |
Other Commitments [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | 3,599
Commitment Period Two Thousand Thirty Seven |
Other Commitments [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | 6,850
Commitment Period Two Thousand Thirty Eight |
Other Commitments [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | 2,300
Commitment Period Two Thousand Thirty Nine |
Other Commitments [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | 7,350
Commitment Period Two Thousand Forty Six |
Other Commitments [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 3,000

X
- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + 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 (b)(1) -URI http://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsMaximumExposure
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_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=rga_CommitmentPeriodTwoThousandThirtyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=rga_CommitmentPeriodTwoThousandThirtyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=rga_CommitmentPeriodTwoThousandThirtySixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=rga_CommitmentPeriodTwoThousandThirtySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=rga_CommitmentPeriodTwoThousandThirtyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=rga_CommitmentPeriodTwoThousandThirtyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=rga_CommitmentPeriodTwoThousandFortySixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |