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Investments - Fixed Maturity Securities in Continuous Loss Position (Details) | Mar. 31, 2024 security | Mar. 31, 2024 position | Dec. 31, 2023 security | Dec. 31, 2023 position
--- | --- | --- | --- | ---
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months | 2,213 | 2,213 | 2,305 | 2,305
Investment Grade |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months |  | 2,027 |  | 2,103
Non Investment Grade |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months |  | 124 |  | 139
AAA |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months |  | 191 |  | 226
AA |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months |  | 984 |  | 1,006
A |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months |  | 415 |  | 423
BBB |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months |  | 437 |  | 448
BB |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months |  | 82 |  | 93
B |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months |  | 34 |  | 39
CCC or lower |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months |  | 8 |  | 7
Not rated |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of position with a gross unrealized loss, more than 12 months |  | 62 |  | 63

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