XML 39 R2.htm IDEA: XBRL DOCUMENT
v3.25.2

Cover Entity Listings - NEW YORK STOCK EXCHANGE, INC. [Member] | Jul. 29, 2025
--- | ---
RGA [Member] |
Entity Information [Line Items] |
Title of 12(b) Security | Common Stock, par value $0.01
Trading Symbol | RGA
Security Exchange Name | NYSE
RZB [Member] |
Entity Information [Line Items] |
Title of 12(b) Security | 5.75% Fixed-To-Floating Rate Subordinated Debentures due 2056
Trading Symbol | RZB
Security Exchange Name | NYSE
RZC |
Entity Information [Line Items] |
Title of 12(b) Security | 7.125% Fixed Rate Reset Subordinated Debentures due 2052
Trading Symbol | RZC
Security Exchange Name | NYSE

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: | dei_EntityInformationLineItems
Namespace Prefix: | dei_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Title of a 12(b) registered security. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 12 -Subsection b + Details
Name: | dei_Security12bTitle
Namespace Prefix: | dei_
Data Type: | dei:securityTitleItemType
Balance Type: | na
Period Type: | duration

X
- Definition Name of the Exchange on which a security is registered. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 12 -Subsection d1-1 + Details
Name: | dei_SecurityExchangeName
Namespace Prefix: | dei_
Data Type: | dei:edgarExchangeCodeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Trading symbol of an instrument as listed on an exchange. + References No definition available. + Details
Name: | dei_TradingSymbol
Namespace Prefix: | dei_
Data Type: | dei:tradingSymbolItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_EntityListingsExchangeAxis=exch_XNYS
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=rga_RGAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=rga_RZBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=rga_RZCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |