XML 117 R100.htm IDEA: XBRL DOCUMENT v3.24.0.1

Reinsurance (Funds Withheld) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Reinsurance Liabilities Table [Line Items]
Funds Held under Reinsurance Agreements, Liability	$ 4,483	$ 1,486
Funds withheld at interest	5,683	6,003
Available-for-sale Securities [Member]
Reinsurance Liabilities Table [Line Items]
Funds withheld at interest	2,442	203
Equity Securities [Member]
Reinsurance Liabilities Table [Line Items]
Funds withheld at interest	2	1
Mortgage Loans on Real Estate [Member]
Reinsurance Liabilities Table [Line Items]
Funds withheld at interest	451	18
Funds Withheld At Interest [Member]
Reinsurance Liabilities Table [Line Items]
Funds withheld at interest	1,545	1,596
Partnership Interest [Member]
Reinsurance Liabilities Table [Line Items]
Funds withheld at interest	35	0
Short-term Investments [Member]
Reinsurance Liabilities Table [Line Items]
Funds withheld at interest	30	1
Accrued Income Receivable
Reinsurance Liabilities Table [Line Items]
Funds withheld at interest	28	3
Other Assets
Reinsurance Liabilities Table [Line Items]
Funds withheld at interest	1	0
Assets
Reinsurance Liabilities Table [Line Items]
Funds withheld at interest	$ 4,534	$ 1,822

X

- Definition

Reinsurance Liabilities Table [Line Items]

+ References

No definition available.

+ Details

Name:	rga_ReinsuranceLiabilitiesTableLineItems
Namespace Prefix:	rga_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of the reinsurer's funds held on its behalf by the ceding insurer, including funds held in trust, under reinsurance treaties or contracts with the assuming insurer as security for the payment of the obligations thereunder.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(10))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

+ Details

Name:	us-gaap_FundsHeldUnderReinsuranceAgreementsAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of funds held as security for payments to be received under reinsurance contracts.

+ References

No definition available.

+ Details

Name:	us-gaap_FundsHeldUnderReinsuranceAgreementsLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	rga_MajorCategoriesOfInvestmentsAxis=us-gaap_AvailableforsaleSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	rga_MajorCategoriesOfInvestmentsAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	rga_MajorCategoriesOfInvestmentsAxis=us-gaap_MortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	rga_MajorCategoriesOfInvestmentsAxis=rga_FundsWithheldAtInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	rga_MajorCategoriesOfInvestmentsAxis=srt_PartnershipInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	rga_MajorCategoriesOfInvestmentsAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	rga_MajorCategoriesOfInvestmentsAxis=us-gaap_AccruedIncomeReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	rga_MajorCategoriesOfInvestmentsAxis=us-gaap_OtherAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	rga_MajorCategoriesOfInvestmentsAxis=us-gaap_AssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: