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Investments - Fixed Maturity Securities in Continuous Loss Position (Details) | Jun. 30, 2023 security | Jun. 30, 2023 position | Dec. 31, 2022 security | Dec. 31, 2022 position
--- | --- | --- | --- | ---
Gain (Loss) on Securities |  |  |  |
Number of positions with a gross unrealized loss (Security) | 2,227 | 2,227 | 587 | 587
AAA |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of positions with a gross unrealized loss (Security) |  | 229 |  | 67
AA |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of positions with a gross unrealized loss (Security) |  | 835 |  | 217
A |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of positions with a gross unrealized loss (Security) |  | 399 |  | 94
BBB |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of positions with a gross unrealized loss (Security) |  | 436 |  | 93
BB |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of positions with a gross unrealized loss (Security) |  | 183 |  | 68
B |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of positions with a gross unrealized loss (Security) |  | 85 |  | 31
CCC or lower |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of positions with a gross unrealized loss (Security) |  | 5 |  | 2
Not rated |  |  |  |
Gain (Loss) on Securities |  |  |  |
Number of positions with a gross unrealized loss (Security) |  | 55 |  | 15

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