Investments - Fixed Maturity Securities in Continuous Loss Position (Details)	Jun. 30, 2025 security	Jun. 30, 2025 position	Dec. 31, 2024 security	Dec. 31, 2024 position
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months	1,783	1,783	1,862	1,862
Investment Grade
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months		1,683		1,744
Non Investment Grade
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months		52		62
AAA
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months		141		155
AA
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months		894		899
A
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months		308		320
BBB
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months		340		370
BB
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months		37		40
B
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months		11		18
CCC or lower
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months		4		4
Not rated
Gain (Loss) on Securities
Number of position with a gross unrealized loss, more than 12 months		48		56