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