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Fixed Maturity Securities In An Unrealized Loss Position (Non-Investment Grade Fixed Maturity Securities) (Details) - External Credit Rating, Noninvestment Grade $ in Thousands | Sep. 30, 2025 USD ($)
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Debt Securities, Available-for-sale [Line Items] |
Number of Securities | 125
Aggregate Fair Value | $ 272,127
Gross Unrealized Loss | $ 197,338
Foreign government |
Debt Securities, Available-for-sale [Line Items] |
Number of Securities | 75
Aggregate Fair Value | $ 189,418
Gross Unrealized Loss | $ 194,357
Corporate |
Debt Securities, Available-for-sale [Line Items] |
Number of Securities | 28
Aggregate Fair Value | $ 51,508
Gross Unrealized Loss | $ 1,533
State and municipal |
Debt Securities, Available-for-sale [Line Items] |
Number of Securities | 6
Aggregate Fair Value | $ 28,795
Gross Unrealized Loss | $ 1,256
Mortgage-backed |
Debt Securities, Available-for-sale [Line Items] |
Number of Securities | 15
Aggregate Fair Value | $ 2,404
Gross Unrealized Loss | $ 191
Asset-backed |
Debt Securities, Available-for-sale [Line Items] |
Number of Securities | 1
Aggregate Fair Value | $ 2
Gross Unrealized Loss | $ 1

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