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Document and Entity Information Document and Entity Information Entity Listings - NEW YORK STOCK EXCHANGE, INC. [Member] | 9 Months Ended
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Sep. 30, 2019
RGA [Member] |
Entity Listings [Line Items] |
Title of 12(b) Security | Common Stock, par value $0.01
Trading Symbol | RGA
Security Exchange Name | NYSE
RZA [Member] |
Entity Listings [Line Items] |
Title of 12(b) Security | 6.20% Fixed-To-Floating Rate Subordinated Debentures due 2042
Trading Symbol | RZA
Security Exchange Name | NYSE
RZB [Member] |
Entity Listings [Line Items] |
Title of 12(b) Security | 5.75% Fixed-To-Floating Rate Subordinated Debentures due 2056
Trading Symbol | RZB
Security Exchange Name | NYSE

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- 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
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- 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
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