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SCHEDULE I - SUMMARY OF INVESTMENTS - OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) $ in Thousands | Dec. 31, 2022 USD ($)
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SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Fair value | $ 13,867,405
Amount shown on the balance sheet | 14,353,284
Fixed maturities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 12,176,473
Fair value | 11,326,894
Amount shown on the balance sheet | 11,326,894
Fixed maturities | U.S. government and agency |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 2,731,733
Fair value | 2,639,330
Amount shown on the balance sheet | 2,639,330
Fixed maturities | Non-U.S. government |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 612,546
Fair value | 562,029
Amount shown on the balance sheet | 562,029
Fixed maturities | Corporate debt |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 4,680,798
Fair value | 4,255,556
Amount shown on the balance sheet | 4,255,556
Fixed maturities | Agency RMBS |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 1,297,423
Fair value | 1,202,785
Amount shown on the balance sheet | 1,202,785
Fixed maturities | CMBS |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 1,029,863
Fair value | 947,778
Amount shown on the balance sheet | 947,778
Fixed maturities | Non-agency RMBS |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 151,907
Fair value | 133,534
Amount shown on the balance sheet | 133,534
Fixed maturities | ABS |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 1,499,728
Fair value | 1,429,527
Amount shown on the balance sheet | 1,429,527
Fixed maturities | Municipals |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 172,475
Fair value | 156,355
Amount shown on the balance sheet | 156,355
Fixed maturities, held to maturity, at amortized cost |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 698,351
Fair value | 674,743
Amount shown on the balance sheet | 698,351
Fixed maturities, held to maturity, at amortized cost | Corporate debt |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 85,200
Fair value | 73,772
Amount shown on the balance sheet | 85,200
Fixed maturities, held to maturity, at amortized cost | ABS |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized cost | 613,151
Fair value | 600,971
Amount shown on the balance sheet | 613,151
Mortgage loans |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Fair value | 627,437
Amount shown on the balance sheet | 627,437
Short-term investments |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Fair value | 70,310
Amount shown on the balance sheet | 70,310
Equity securities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Fair value | 485,253
Amount shown on the balance sheet | 485,253
Other investments, at fair value |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Fair value | 682,768
Amount shown on the balance sheet | 996,751
Equity method investments |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Fair value | 0
Amount shown on the balance sheet | $ 148,288

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