Fixed Maturity Securities In An Unrealized Loss Position (Non-Investment Grade Fixed Maturity Securities) (Details) - External Credit Rating, Noninvestment Grade $ in Thousands	Jun. 30, 2026 USD ($)
Debt Securities, Available-for-sale [Line Items]
Number of Securities	77
Aggregate Fair Value	$ 186,437
Gross Unrealized Loss	$ 173,301
Foreign government
Debt Securities, Available-for-sale [Line Items]
Number of Securities	56
Aggregate Fair Value	$ 167,337
Gross Unrealized Loss	$ 172,029
Corporate
Debt Securities, Available-for-sale [Line Items]
Number of Securities	6
Aggregate Fair Value	$ 8,417
Gross Unrealized Loss	$ 311
State and municipal
Debt Securities, Available-for-sale [Line Items]
Number of Securities	2
Aggregate Fair Value	$ 9,159
Gross Unrealized Loss	$ 839
Mortgage-backed
Debt Securities, Available-for-sale [Line Items]
Number of Securities	13
Aggregate Fair Value	$ 1,524
Gross Unrealized Loss	$ 122

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details