0000898174-21-000016 | 10-Q | XBRL Viewer | Reinsurance Group OF America INC

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2021	Apr. 30, 2021
Cover [Abstract]
Entity Incorporation, State or Country Code	MO
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Amendment flag	false
Entity registrant name	REINSURANCE GROUP OF AMERICA, INCORPORATED
Entity central index key	0000898174
Entity current reporting status	Yes
Entity Interactive Data Current	Yes
Current fiscal year end date	--12-31
Entity filer category	Large Accelerated Filer
Common Shares Outstanding		67,985,243
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Small Business	false
Entity Tax Identification Number	43-1627032
Document Transition Report	false
Entity File Number	1-11848

Document and Entity Information Address	3 Months Ended
Mar. 31, 2021
Document Information [Line Items]
Entity Address, Address Line One	16600 Swingley Ridge Road
Entity Address, City or Town	Chesterfield
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	63017
City Area Code	636
Local Phone Number	736-7000

Label

Element

Value

Gain Loss On Investments Related To Change In Fair Value Of Derivatives Excluding Embedded Derivatives

rga_GainLossOnInvestmentsRelatedToChangeInFairValueOfDerivativesExcludingEmbeddedDerivatives

$ (51,000,000)

Gain Loss On Investments Related To Change In Fair Value Of Derivatives Excluding Embedded Derivatives

rga_GainLossOnInvestmentsRelatedToChangeInFairValueOfDerivativesExcludingEmbeddedDerivatives

123,000,000

Liability For Unpaid Claims And Claims Adjustment Expense Net Of Recoverable

rga_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetOfRecoverable

6,915,000,000

Liability For Unpaid Claims And Claims Adjustment Expense Net Of Recoverable

rga_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetOfRecoverable

6,222,000,000

Liability For Unpaid Claims And Claims Adjustment Expense Net Of Recoverable

rga_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetOfRecoverable

7,552,000,000

Liability For Unpaid Claims And Claims Adjustment Expense Net Of Recoverable

rga_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetOfRecoverable

$ 6,324,000,000

Stock Based Compensation Shares

rga_StockBasedCompensationShares

^[1]

Stock Based Compensation Shares

rga_StockBasedCompensationShares

28,342

^[1]

Stock Based Compensation Shares

rga_StockBasedCompensationShares

28,342

^[1]

Stock Based Compensation Shares

rga_StockBasedCompensationShares

^[1]

Stock Based Compensation Shares

rga_StockBasedCompensationShares

64,654

^[1]

Stock Based Compensation Shares

rga_StockBasedCompensationShares

64,654

^[1]

Fair Value Measured On Recurring Basis Short Term Investments

rga_FairValueMeasuredOnRecurringBasisShortTermInvestments

$ 123,000,000

Fair Value Measured On Recurring Basis Short Term Investments

rga_FairValueMeasuredOnRecurringBasisShortTermInvestments

3,000,000

Fair Value Measured On Recurring Basis Short Term Investments

rga_FairValueMeasuredOnRecurringBasisShortTermInvestments

109,000,000

Fair Value Measured On Recurring Basis Short Term Investments

rga_FairValueMeasuredOnRecurringBasisShortTermInvestments

11,000,000

Fair Value Measured On Recurring Basis Short Term Investments

rga_FairValueMeasuredOnRecurringBasisShortTermInvestments

197,000,000

Fair Value Measured On Recurring Basis Short Term Investments

rga_FairValueMeasuredOnRecurringBasisShortTermInvestments

32,000,000

Fair Value Measured On Recurring Basis Short Term Investments

rga_FairValueMeasuredOnRecurringBasisShortTermInvestments

150,000,000

Fair Value Measured On Recurring Basis Short Term Investments

rga_FairValueMeasuredOnRecurringBasisShortTermInvestments

15,000,000

Liability for Unpaid Claims and Claims Adjustment Expense Other

rga_LiabilityforUnpaidClaimsandClaimsAdjustmentExpenseOther

41,000,000

Liability for Unpaid Claims and Claims Adjustment Expense Other

rga_LiabilityforUnpaidClaimsandClaimsAdjustmentExpenseOther

274,000,000

Fair Value Measured On Recurring Basis Guaranteed Interest Contracts Embedded Derivatives

rga_FairValueMeasuredOnRecurringBasisGuaranteedInterestContractsEmbeddedDerivatives

856,000,000

Fair Value Measured On Recurring Basis Guaranteed Interest Contracts Embedded Derivatives

rga_FairValueMeasuredOnRecurringBasisGuaranteedInterestContractsEmbeddedDerivatives

Fair Value Measured On Recurring Basis Guaranteed Interest Contracts Embedded Derivatives

rga_FairValueMeasuredOnRecurringBasisGuaranteedInterestContractsEmbeddedDerivatives

Fair Value Measured On Recurring Basis Guaranteed Interest Contracts Embedded Derivatives

rga_FairValueMeasuredOnRecurringBasisGuaranteedInterestContractsEmbeddedDerivatives

856,000,000

Fair Value Measured On Recurring Basis Guaranteed Interest Contracts Embedded Derivatives

rga_FairValueMeasuredOnRecurringBasisGuaranteedInterestContractsEmbeddedDerivatives

907,000,000

Fair Value Measured On Recurring Basis Guaranteed Interest Contracts Embedded Derivatives

rga_FairValueMeasuredOnRecurringBasisGuaranteedInterestContractsEmbeddedDerivatives

Fair Value Measured On Recurring Basis Guaranteed Interest Contracts Embedded Derivatives

rga_FairValueMeasuredOnRecurringBasisGuaranteedInterestContractsEmbeddedDerivatives

Fair Value Measured On Recurring Basis Guaranteed Interest Contracts Embedded Derivatives

rga_FairValueMeasuredOnRecurringBasisGuaranteedInterestContractsEmbeddedDerivatives

907,000,000

Investment Revenue

rga_InvestmentRevenue

495,000,000

Investment Revenue

rga_InvestmentRevenue

480,000,000

Investment Revenue

rga_InvestmentRevenue

2,000,000

Investment Revenue

rga_InvestmentRevenue

2,000,000

Investment Revenue

rga_InvestmentRevenue

66,000,000

Investment Revenue

rga_InvestmentRevenue

67,000,000

Investment Revenue

rga_InvestmentRevenue

14,000,000

Investment Revenue

rga_InvestmentRevenue

15,000,000

Investment Revenue

rga_InvestmentRevenue

1,000,000

Investment Revenue

rga_InvestmentRevenue

4,000,000

Investment Revenue

rga_InvestmentRevenue

174,000,000

Investment Revenue

rga_InvestmentRevenue

(5,000,000)

Investment Revenue

rga_InvestmentRevenue

836,000,000

Investment Revenue

rga_InvestmentRevenue

616,000,000

Cumulative Foreign Currency Translation Gain Loss Recorded In Accumulated Other Comprehensive Income Loss For Terminated Net Investment In Foreign Operations Hedges

rga_CumulativeForeignCurrencyTranslationGainLossRecordedInAccumulatedOtherComprehensiveIncomeLossForTerminatedNetInvestmentInForeignOperationsHedges

124,000,000

Cumulative Foreign Currency Translation Gain Loss Recorded In Accumulated Other Comprehensive Income Loss For Terminated Net Investment In Foreign Operations Hedges

rga_CumulativeForeignCurrencyTranslationGainLossRecordedInAccumulatedOtherComprehensiveIncomeLossForTerminatedNetInvestmentInForeignOperationsHedges

139,000,000

Other Impairment Losses And Change In Mortgage Loan Provision

rga_OtherImpairmentLossesAndChangeInMortgageLoanProvision

(18,000,000)

Other Impairment Losses And Change In Mortgage Loan Provision

rga_OtherImpairmentLossesAndChangeInMortgageLoanProvision

13,000,000

Change in Fair Value Limited Partnership Investments and Other Net

rga_ChangeInFairValueLimitedPartnershipInvestmentsAndOtherNet

(111,000,000)

Change in Fair Value Limited Partnership Investments and Other Net

rga_ChangeInFairValueLimitedPartnershipInvestmentsAndOtherNet

(9,000,000)

Impaired Financing Receivable Net Of Related Allowance

rga_ImpairedFinancingReceivableNetOfRelatedAllowance

36,000,000

Impaired Financing Receivable Net Of Related Allowance

rga_ImpairedFinancingReceivableNetOfRelatedAllowance

Impaired Financing Receivable Net Of Related Allowance

rga_ImpairedFinancingReceivableNetOfRelatedAllowance

36,000,000

Impaired Financing Receivable Net Of Related Allowance

rga_ImpairedFinancingReceivableNetOfRelatedAllowance

37,000,000

Impaired Financing Receivable Net Of Related Allowance

rga_ImpairedFinancingReceivableNetOfRelatedAllowance

Impaired Financing Receivable Net Of Related Allowance

rga_ImpairedFinancingReceivableNetOfRelatedAllowance

37,000,000

Gains Losses Deferred In Accumulated Other Comprehensive Income Loss On Derivatives Effective Portion

rga_GainsLossesDeferredInAccumulatedOtherComprehensiveIncomeLossOnDerivativesEffectivePortion

(1,000,000)

Gains Losses Deferred In Accumulated Other Comprehensive Income Loss On Derivatives Effective Portion

rga_GainsLossesDeferredInAccumulatedOtherComprehensiveIncomeLossOnDerivativesEffectivePortion

15,000,000

Gains Losses Deferred In Accumulated Other Comprehensive Income Loss On Derivatives Effective Portion

rga_GainsLossesDeferredInAccumulatedOtherComprehensiveIncomeLossOnDerivativesEffectivePortion

(14,000,000)

Gains Losses Deferred In Accumulated Other Comprehensive Income Loss On Derivatives Effective Portion

rga_GainsLossesDeferredInAccumulatedOtherComprehensiveIncomeLossOnDerivativesEffectivePortion

80,000,000

Gains Losses Deferred In Accumulated Other Comprehensive Income Loss On Derivatives Effective Portion

rga_GainsLossesDeferredInAccumulatedOtherComprehensiveIncomeLossOnDerivativesEffectivePortion

(15,000,000)

Gains Losses Deferred In Accumulated Other Comprehensive Income Loss On Derivatives Effective Portion

rga_GainsLossesDeferredInAccumulatedOtherComprehensiveIncomeLossOnDerivativesEffectivePortion

95,000,000

Derivatives And Other Investments Net

rga_DerivativesAndOtherInvestmentsNet

18,000,000

Derivatives And Other Investments Net

rga_DerivativesAndOtherInvestmentsNet

(243,000,000)

Adoption of New Accounting Standard Current Expected Credit Loss

rga_AdoptionofNewAccountingStandardCurrentExpectedCreditLoss

Adoption of New Accounting Standard Current Expected Credit Loss

rga_AdoptionofNewAccountingStandardCurrentExpectedCreditLoss

14,000,000

Fair Value Measured On Recurring Basis Funds Held Under Reinsurance Agreements Asset Embedded Derivatives