Document and Entity Information Document and Entity Information Entity Listings - NEW YORK STOCK EXCHANGE, INC. [Member] |
3 Months Ended |
|---|---|
Mar. 31, 2026 | |
| RGA [Member] | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.01 |
| Trading Symbol | RGA |
| Security Exchange Name | NYSE |
| RZA [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 |
| RZB [Member] | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | 7.125% Fixed Rate Subordinated Debentures due 2052 |
| Trading Symbol | RZC |
| Security Exchange Name | NYSE |