Fair Value Measurements - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) - Level 3 - Measurement Input, Incremental Cost of Capital	Mar. 31, 2026	Dec. 31, 2025
High
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fixed maturity securities, measurement input	11.35%	11.10%
Loans receivable	8.09%	8.34%
Low
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fixed maturity securities, measurement input	4.66%	4.25%
Loans receivable	6.54%	6.55%
Weighted average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fixed maturity securities, measurement input	6.73%	6.40%
Loans receivable	7.67%	7.74%

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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