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v3.22.2.2

Transactions With Related Parties (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Jan. 01, 2024 | Jun. 30, 2022 | Dec. 31, 2021 | Jul. 01, 2021 | Jun. 30, 2021 | Jan. 01, 2021 | Dec. 31, 2020
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Premiums ceded | $ 1,136,909 | $ 1,131,486 | $ 3,488,632 | $ 2,907,002 |  |  |  |  |  |  |
Reinsurance recoverable on unpaid and paid losses and loss adjustment expenses | 6,356,456 | 5,358,852 | 6,356,456 | 5,358,852 |  | $ 5,938,511 | $ 5,880,735 |  | $ 4,314,515 |  | $ 4,500,802
Reinsurance balances payable | 1,669,592 |  | 1,669,592 |  |  |  | 1,583,253 |  |  |  |
Forecast |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Put/call option, proportion of initial shares |  |  |  |  | 33.30% |  |  |  |  |  |
Greysbridge Holdings Ltd |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage ownership |  |  |  |  |  |  |  | 40.00% |  |  |
Kelso And Company | Greysbridge Holdings Ltd |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage ownership |  |  |  |  |  |  |  | 30.00% |  |  |
Warburg Pincus LLC | Greysbridge Holdings Ltd |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage ownership |  |  |  |  |  |  |  | 30.00% |  |  |
Operating affiliates | Premia Holdings Ltd |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Legacy business, amount of liabilities transferred |  |  |  |  |  |  |  |  |  | $ 380,000 |
Operating affiliates | Somers Holdings Ltd |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Premiums ceded | 236,500 | $ 316,200 | 661,100 | $ 316,200 |  |  |  |  |  |  |
Reinsurance recoverable on unpaid and paid losses and loss adjustment expenses | 1,100,000 |  | 1,100,000 |  |  |  | 902,800 |  |  |  |
Reinsurance balances payable | 408,000 |  | 408,000 |  |  |  | $ 258,400 |  |  |  |
Senior notes, face amount | $ 35,000 |  | $ 35,000 |  |  |  |  |  |  |  |
Senior notes, stated percentage | 6.50% |  | 6.50% |  |  |  |  |  |  |  |

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