RESERVE FOR CLAIMS AND CLAIM EXPENSES - Schedule of Reserve for Claims and Claim Expenses by Segment (Details) - USD ($) $ in Thousands |
Mar. 31, 2024 |
Dec. 31, 2023 |
Mar. 31, 2023 |
---|---|---|---|
Liability for Claims and Claims Adjustment Expense [Line Items] | |||
Case Reserves | $ 5,127,627 | $ 5,262,596 | |
Additional Case Reserves | 1,513,823 | 1,662,570 | |
IBNR | 13,728,160 | 13,561,703 | |
Total | 20,369,610 | 20,486,869 | $ 15,996,826 |
Property | Operating Segments | |||
Liability for Claims and Claims Adjustment Expense [Line Items] | |||
Case Reserves | 2,280,896 | 2,461,580 | |
Additional Case Reserves | 1,337,581 | 1,459,010 | |
IBNR | 3,584,236 | 3,913,030 | |
Total | 7,202,713 | 7,833,620 | |
Casualty and Specialty | Operating Segments | |||
Liability for Claims and Claims Adjustment Expense [Line Items] | |||
Case Reserves | 2,846,731 | 2,801,016 | |
Additional Case Reserves | 176,242 | 203,560 | |
IBNR | 10,143,924 | 9,648,673 | |
Total | $ 13,166,897 | $ 12,653,249 |