Investments - Fixed Maturity Securities in Continuous Loss Position (Details)	Dec. 31, 2025 security	Dec. 31, 2025 position	Dec. 31, 2024 security	Dec. 31, 2024 position
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months	1,649	1,649	1,862	1,862
Investment Grade
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months		1,592		1,744
Non Investment Grade
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months		34		62
AAA
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months		140		155
AA
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months		860		899
A
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months		275		320
BBB
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months		317		370
BB
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months		24		40
B
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months		8		18
CCC or lower
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months		2		4
Not rated
Debt Securities, Available-for-sale [Line Items]
Number of position with a gross unrealized loss, more than 12 months		23		56