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Reinsurance (Tables) | 12 Months Ended
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Dec. 31, 2023
Reinsurance Disclosures [Abstract] |
Effect Of Reinsurance And Retrocessional Reinsurance On Consolidated Premiums Written And Earned | The following tables summarize the effect of reinsurance and retrocessional reinsurance on premiums written and earned.
| Year Ended December 31, 2023
(dollars in thousands) | Direct |  | Assumed |  | Ceded |  | Net Premiums
Underwriting: |  |  |  |  |  |  |
Written | $ | 8,657,266 |  |  | $ | 1,620,366 |  |  | $ | (1,878,844) |  |  | $ | 8,398,788 |
Earned | $ | 8,363,710 |  |  | $ | 1,616,630 |  |  | $ | (1,683,648) |  |  | $ | 8,296,692 |
Program services and other fronting: |  |  |  |  |  |  |
Written | 2,649,217 |  |  | 1,075,388 |  |  | (3,725,818) |  |  | (1,213) |
Earned | 2,636,179 |  |  | 937,400 |  |  | (3,574,792) |  |  | (1,213) |
Consolidated: |  |  |  |  |  |  |
Written | $ | 11,306,483 |  |  | $ | 2,695,754 |  |  | $ | (5,604,662) |  |  | $ | 8,397,575 |
Earned | $ | 10,999,889 |  |  | $ | 2,554,030 |  |  | $ | (5,258,440) |  |  | $ | 8,295,479 |
| Year Ended December 31, 2022
(dollars in thousands) | Direct |  | Assumed |  | Ceded |  | Net Premiums
Underwriting: |  |  |  |  |  |  |
Written | $ | 8,085,812 |  |  | $ | 1,761,726 |  |  | $ | (1,640,165) |  |  | $ | 8,207,373 |
Earned | $ | 7,379,766 |  |  | $ | 1,589,920 |  |  | $ | (1,378,191) |  |  | $ | 7,591,495 |
Program services and other fronting: |  |  |  |  |  |  |
Written | 2,644,138 |  |  | 710,006 |  |  | (3,358,127) |  |  | (3,983) |
Earned | 2,688,804 |  |  | 656,885 |  |  | (3,349,392) |  |  | (3,703) |
Consolidated: |  |  |  |  |  |  |
Written | $ | 10,729,950 |  |  | $ | 2,471,732 |  |  | $ | (4,998,292) |  |  | $ | 8,203,390 |
Earned | $ | 10,068,570 |  |  | $ | 2,246,805 |  |  | $ | (4,727,583) |  |  | $ | 7,587,792 |
| Year Ended December 31, 2021
(dollars in thousands) | Direct |  | Assumed |  | Ceded |  | Net Premiums
Underwriting: |  |  |  |  |  |  |
Written | $ | 6,863,229 |  |  | $ | 1,622,700 |  |  | $ | (1,360,763) |  |  | $ | 7,125,166 |
Earned | $ | 6,275,078 |  |  | $ | 1,482,755 |  |  | $ | (1,250,392) |  |  | $ | 6,507,441 |
Program services and other fronting: |  |  |  |  |  |  |
Written | 2,644,955 |  |  | 307,798 |  |  | (2,958,188) |  |  | (5,435) |
Earned | 2,453,990 |  |  | 261,591 |  |  | (2,719,993) |  |  | (4,412) |
Consolidated: |  |  |  |  |  |  |
Written | $ | 9,508,184 |  |  | $ | 1,930,498 |  |  | $ | (4,318,951) |  |  | $ | 7,119,731 |
Earned | $ | 8,729,068 |  |  | $ | 1,744,346 |  |  | $ | (3,970,385) |  |  | $ | 6,503,029 |
Effect of Reinsurance And Retrocessional Reinsurance on Incurred Losses and Loss Adjustment Expenses | The following table summarizes the effect of reinsurance and retrocessional reinsurance on losses and loss adjustment expenses in the Company's underwriting operations.
| Years ended December 31,
(dollars in thousands) | 2023 |  | 2022 |  | 2021
Gross losses and loss adjustment expenses | $ | 6,817,630 |  |  | $ | 5,281,424 |  |  | $ | 4,477,752 |
Ceded losses and loss adjustment expenses | (1,496,265) |  |  | (834,648) |  |  | (893,230) |
Net losses and loss adjustment expenses | $ | 5,321,365 |  |  | $ | 4,446,776 |  |  | $ | 3,584,522 |

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