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Summary of Significant Accounting Policies (Investments) (Details)
12 Months Ended
Dec. 31, 2023
Minimum [Member] | Fixed maturities [Member]  
Schedule of Investments [Line Items]  
Investment maturity period 1 year
Maximum [Member] | Short-term investments [Member]  
Schedule of Investments [Line Items]  
Investment maturity period 1 year