XML 108 R95.htm IDEA: XBRL DOCUMENT
v3.23.1

Derivative Instruments (Gross Notional Amount and Fair Value of Derivatives Contracts) (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Derivative [Line Items] |  |
Notional Amount | $ 34,479 | $ 33,341
Carrying Value / Fair Value of Assets | 504 | 586
Derivative Liability, Fair Value, Gross Liability | 1,059 | 1,137
Not Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Notional Amount | 31,096 | 30,491
Carrying Value / Fair Value of Assets | 470 | 545
Derivative Liability, Fair Value, Gross Liability | 856 | 927
Not Designated as Hedging Instrument | Interest Rate Swaps |  |
Derivative [Line Items] |  |
Notional Amount | 1,578 | 1,271
Carrying Value / Fair Value of Assets | 13 | 2
Derivative Liability, Fair Value, Gross Liability | 1 | 2
Not Designated as Hedging Instrument | Foreign Currency Forwards |  |
Derivative [Line Items] |  |
Notional Amount | 1,006 | 766
Carrying Value / Fair Value of Assets | 4 | 50
Derivative Liability, Fair Value, Gross Liability | 8 | 0
Not Designated as Hedging Instrument | Financial Futures |  |
Derivative [Line Items] |  |
Notional Amount | 186 | 164
Carrying Value / Fair Value of Assets | 0 | 0
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Not Designated as Hedging Instrument | Consumer Price Index Swap [Member] |  |
Derivative [Line Items] |  |
Notional Amount | 478 | 496
Carrying Value / Fair Value of Assets | 19 | 20
Derivative Liability, Fair Value, Gross Liability | 5 | 3
Not Designated as Hedging Instrument | Credit Default Swaps |  |
Derivative [Line Items] |  |
Notional Amount | 1,528 | 1,523
Carrying Value / Fair Value of Assets | 2 | 2
Derivative Liability, Fair Value, Gross Liability | 14 | 21
Not Designated as Hedging Instrument | Equity Options |  |
Derivative [Line Items] |  |
Notional Amount | 336 | 358
Carrying Value / Fair Value of Assets | 24 | 38
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Not Designated as Hedging Instrument | Synthetic Guaranteed Investment Contracts |  |
Derivative [Line Items] |  |
Notional Amount | 17,280 | 17,411
Carrying Value / Fair Value of Assets | 0 | 0
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Not Designated as Hedging Instrument | Embedded Derivatives In Modified Coinsurance Or Funds Withheld Arrangements |  |
Derivative [Line Items] |  |
Notional Amount | 0 | 0
Carrying Value / Fair Value of Assets | 362 | 363
Derivative Liability, Fair Value, Gross Liability | 333 | 371
Not Designated as Hedging Instrument | Embedded Derivatives In Indexed Annuity [Member] |  |
Derivative [Line Items] |  |
Notional Amount | 0 | 0
Carrying Value / Fair Value of Assets | 0 | 0
Derivative Liability, Fair Value, Gross Liability | 495 | 530
Not Designated as Hedging Instrument | Currency Swap [Member] |  |
Derivative [Line Items] |  |
Notional Amount | 150 | 150
Carrying Value / Fair Value of Assets | 16 | 18
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Not Designated as Hedging Instrument | Interest Rate Swaption |  |
Derivative [Line Items] |  |
Notional Amount | 7,957 | 7,756
Carrying Value / Fair Value of Assets | 11 | 34
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Not Designated as Hedging Instrument | Total Return Swap |  |
Derivative [Line Items] |  |
Notional Amount | 500 | 500
Carrying Value / Fair Value of Assets | 19 | 18
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Not Designated as Hedging Instrument | Interest Rate Future |  |
Derivative [Line Items] |  |
Notional Amount | 97 | 96
Carrying Value / Fair Value of Assets | 0 | 0
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Designated As Hedging Instrument |  |
Derivative [Line Items] |  |
Notional Amount | 3,383 | 2,850
Carrying Value / Fair Value of Assets | 34 | 41
Derivative Liability, Fair Value, Gross Liability | 203 | 210
Designated As Hedging Instrument | Interest Rate Swaps |  |
Derivative [Line Items] |  |
Notional Amount | 1,701 | 1,310
Carrying Value / Fair Value of Assets | 5 | 3
Derivative Liability, Fair Value, Gross Liability | 112 | 113
Designated As Hedging Instrument | Currency Swap [Member] |  |
Derivative [Line Items] |  |
Notional Amount | 114 | 114
Carrying Value / Fair Value of Assets | 0 | 0
Derivative Liability, Fair Value, Gross Liability | 3 | 0
Designated As Hedging Instrument | Forward Contracts [Member] |  |
Derivative [Line Items] |  |
Notional Amount | 1,161 | 1,019
Carrying Value / Fair Value of Assets | 29 | 38
Derivative Liability, Fair Value, Gross Liability | 2 | 1
Designated As Hedging Instrument | Other Contract |  |
Derivative [Line Items] |  |
Notional Amount | 407 | 407
Carrying Value / Fair Value of Assets | 0 | 0
Derivative Liability, Fair Value, Gross Liability | $ 86 | $ 96

X
- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483444/210-20-55-22 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483466/210-20-50-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483444/210-20-55-7 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4B Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (c)(2) -SubTopic 20 -Topic 860 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481326/860-20-50-4D + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483444/210-20-55-22 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483466/210-20-50-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483444/210-20-55-7 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4B Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (c)(2) -SubTopic 20 -Topic 860 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481326/860-20-50-4D + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeLiability
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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480237/815-40-50-5 + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-1B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-1A + Details
Name: | us-gaap_DerivativeNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeForwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_FutureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=rga_ConsumerPriceIndexSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CreditDefaultSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_EquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=rga_SyntheticGuaranteedInvestmentContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=rga_EmbeddedDerivativesInModifiedCoinsuranceOrFundsWithheldArrangementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=rga_EmbeddedDerivativesInIndexedAnnuityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CurrencySwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwaptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_TotalReturnSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=rga_InterestRateFutureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForwardContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_OtherContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |