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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Effective Tax Rate [Line Items]      
Income (loss) before income taxes $ 566,998,000 $ 528,553,000 $ 817,729,000
Income tax rate 0.09% 0.10% 0.16%
Change in enacted tax act (0.52%) 0.86% 0.66%
Effect of uncertain tax positions 0.00% 0.00% (0.06%)
Effect of permanent differences 1.01% 0.75% 0.10%
Effect of investment tax credit purchase (0.41%) 0.00% 0.00%
Other discrete items (0.74%) 0.05% 0.22%
Effective income tax rate 8.61% 10.30% 8.66%
Bermuda      
Effective Tax Rate [Line Items]      
Income (loss) before income taxes $ 308,711,000 $ 325,453,000 $ 532,391,000
Income tax rate 0.00% 0.00% 0.00%
U.S.      
Effective Tax Rate [Line Items]      
Income (loss) before income taxes $ 256,967,000 $ 201,960,000 $ 284,468,000
Effective income tax rate 9.18% 8.54% 7.58%
Foreign      
Effective Tax Rate [Line Items]      
Income (loss) before income taxes $ 1,320,000 $ 1,140,000 $ 870,000