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RESERVE FOR CLAIMS AND CLAIM EXPENSES | 3 Months Ended
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Mar. 31, 2024
Insurance Loss Reserves [Abstract] |
RESERVE FOR CLAIMS AND CLAIM EXPENSES | RESERVE FOR CLAIMS AND CLAIM EXPENSES The Company believes the most significant accounting judgment made by management is its estimate of claims and claim expense reserves. Claims and claim expense reserves represent estimates, including actuarial and statistical projections at a given point in time, of the ultimate settlement and administration costs for unpaid claims and claim expenses arising from the insurance and reinsurance contracts the Company sells. The Company’s reserve for claims and claim expenses are a combination of case reserves, additional case reserves (“ACR”) and incurred but not reported losses and incurred but not enough reported losses (collectively referred to as “IBNR”). Case reserves are losses reported to the Company by insureds and ceding companies, but which have not yet been paid. If deemed necessary and in certain situations, the Company establishes ACR which represents the Company’s estimate for claims related to specific contracts which the Company believes may not be adequately estimated by the client as of that date or within the IBNR. The Company establishes IBNR using actuarial techniques and expert judgement to represent the anticipated cost of claims which have not been reported to the Company yet, or where the Company anticipates increased reporting. The Company’s reserving committee, which includes members of the Company’s senior management, reviews, discusses, and assesses the reasonableness and adequacy of the reserving estimates included in our unaudited consolidated financial statements. The following table summarizes the Company’s reserve for claims and claim expenses by segment, allocated between case reserves, additional case reserves and IBNR:
| At March 31, 2024 | Case Reserves |  | Additional Case Reserves |  | IBNR |  | Total |
| Property | $ | 2,280,896 |  |  | $ | 1,337,581 |  |  | $ | 3,584,236 |  |  | $ | 7,202,713 |  |
| Casualty and Specialty | 2,846,731 |  |  | 176,242 |  |  | 10,143,924 |  |  | 13,166,897 |  |
| Total | $ | 5,127,627 |  |  | $ | 1,513,823 |  |  | $ | 13,728,160 |  |  | $ | 20,369,610 |  |
| At December 31, 2023 |  |  |  |  |  |  |  |
| Property | $ | 2,461,580 |  |  | $ | 1,459,010 |  |  | $ | 3,913,030 |  |  | $ | 7,833,620 |  |
| Casualty and Specialty | 2,801,016 |  |  | 203,560 |  |  | 9,648,673 |  |  | 12,653,249 |  |
| Total | $ | 5,262,596 |  |  | $ | 1,662,570 |  |  | $ | 13,561,703 |  |  | $ | 20,486,869 |  |
Activity in the liability for unpaid claims and claim expenses is summarized as follows:
| Three months ended March 31, | 2024 |  | 2023 |
| Reserve for claims and claim expenses, net of reinsurance recoverable, as of beginning of period | $ | 15,142,583 |  |  | $ | 11,181,648 |  |
| Net incurred related to: |  |  |  |
| Current year | 1,263,204 |  |  | 905,952 |  |
| Prior years | (97,081) |  |  | (104,752) |  |
| Total net incurred | 1,166,123 |  |  | 801,200 |  |
| Net paid related to: |  |  |  |
| Current year | 40,657 |  |  | 26,969 |  |
| Prior years | 872,205 |  |  | 690,868 |  |
| Total net paid | 912,862 |  |  | 717,837 |  |
| Foreign exchange and other (1) | (19,914) |  |  | 25,144 |  |
| Reserve for claims and claim expenses, net of reinsurance recoverable, as of end of period | 15,375,930 |  |  | 11,290,155 |  |
| Reinsurance recoverable as of end of period | 4,993,680 |  |  | 4,706,671 |  |
| Reserve for claims and claim expenses as of end of period | $ | 20,369,610 |  |  | $ | 15,996,826 |  |
(1) Reflects the impact of the foreign exchange revaluation of the reserve for claims and claim expenses, net of reinsurance recoverable, denominated in non-U.S. dollars as at the balance sheet date, as well as deals accounted for under retroactive reinsurance accounting. Prior Year Development of the Reserve for Net Claims and Claim Expenses The Company’s estimates of claims and claim expense reserves are not precise in that, among other things, they are based on predictions of future developments and estimates of future trends and other variable factors. Some, but not all, of the Company’s reserves are further subject to the uncertainty inherent in actuarial methodologies and estimates. Because a reserve estimate is simply an insurer’s estimate at a point in time of its ultimate liability, and because there are numerous factors that affect reserves and claims payments that cannot be determined with certainty in advance, the Company’s ultimate payments will vary, perhaps materially, from its estimates of reserves. If the Company determines in a subsequent period that adjustments to its previously established reserves are appropriate, such adjustments are recorded in the period in which they are identified. On a net basis, the Company’s cumulative favorable or unfavorable development is generally reduced by offsetting changes in its reinsurance recoverable, as well as changes to loss related premiums such as reinstatement premiums and redeemable noncontrolling interest, all of which generally move in the opposite direction to changes in the Company’s ultimate claims and claim expenses. The following table details the Company’s prior year net development by segment of its net claims and claim expenses:
| Three months ended March 31, | 2024 |  | 2023 |
|  | (Favorable) adverse development |  | (Favorable) adverse development |
| Property | $ | (94,667) |  |  | $ | (81,693) |  |
| Casualty and Specialty | (2,414) |  |  | (23,059) |  |
| Total net (favorable) adverse development of prior accident years net claims and claim expenses | $ | (97,081) |  |  | $ | (104,752) |  |
Changes to prior year estimated net claims and claim expenses increased net income by $97.1 million during the three months ended March 31, 2024 (2023 - increased net income by $104.8 million), excluding the consideration of changes in reinstatement, adjustment or other premium changes, profit commissions, redeemable noncontrolling interests - DaVinci, Fontana and Vermeer and income tax. Property Segment The following tables detail the development of the Company’s liability for net unpaid claims and claim expenses for its Property segment, allocated between large catastrophe events and other small catastrophe events and attritional loss movements:
| Three months ended March 31, | 2024 |
|  | (Favorable) adverse development |
| Catastrophe net claims and claim expenses |  |
| Large catastrophe events |  |
| 2023 Large Loss Events (1) | $ | 1,569 |  |
| 2022 Weather-Related Large Losses (2) | (8,574) |  |
| 2021 Weather-Related Large Losses (3) | (36,228) |  |
| 2020 Weather-Related Large Loss Events (4) | (6,128) |  |
| 2019 Large Loss Events (5) | (4,053) |  |
| 2018 Large Loss Events (6) | (9,461) |  |
| 2017 Large Loss Events (7) | (7,288) |  |
| Total large catastrophe events | (70,163) |  |
| Small catastrophe events and attritional loss movements |  |
| Other small catastrophe events and attritional loss movements | (24,504) |  |
| Total small catastrophe events and attritional loss movements | (24,504) |  |
| Total net (favorable) adverse development of prior accident years net claims and claim expenses | $ | (94,667) |  |
(1)“2023 Large Loss Events” includes Hurricane Otis and Storm Ciaran in October and November 2023, the wildfires in Hawaii in August 2023 and Hurricane Idalia, a series of large, severe weather events in Texas and other southern and central U.S. states in June 2023, the earthquakes in southern and central Turkey in February 2023, Cyclone Gabrielle, the flooding in northern New Zealand in January and February 2023, and various wind and thunderstorm events in both the Southern and Midwest U.S. during March 2023, and certain aggregate loss contracts triggered during 2023. (2)“2022 Weather-Related Large Losses” includes Hurricane Ian, the floods in Eastern Australia in February and March of 2022, Storm Eunice, the severe weather in France in May and June of 2022, Hurricane Fiona and the typhoons in Asia during the third quarter of 2022, Hurricane Nicole and Winter Storm Elliott during the fourth quarter of 2022, and loss estimates associated with certain aggregate loss contracts triggered during 2022 as a result of weather-related catastrophe events. (3)“2021 Weather-Related Large Losses” includes Winter Storm Uri, the European Floods, Hurricane Ida, the hail storm in Europe in late June 2021, the wildfires in California during the third quarter of 2021, the tornadoes in the Central and Midwest U.S. in December 2021, the Midwest Derecho in December 2021, and losses associated with aggregate loss contracts. (4)“2020 Weather-Related Large Loss Events” includes Hurricanes Laura, Sally, Isaias, Delta, Zeta and Eta, the California, Oregon and Washington wildfires, Typhoon Maysak, the August 2020 Derecho, and losses associated with aggregate loss contracts. (5)“2019 Large Loss Events” includes Hurricane Dorian and Typhoons Faxai and Hagibis and certain losses associated with aggregate loss contracts. (6)“2018 Large Loss Events” includes Typhoons Jebi, Mangkhut and Trami, Hurricane Florence, the wildfires in California during the third and fourth quarters of 2018, Hurricane Michael and certain losses associated with aggregate loss contracts. (7)“2017 Large Loss Events” includes Hurricanes Harvey, Irma and Maria, the Mexico City Earthquake, the wildfires in California during the fourth quarter of 2017 and certain losses associated with aggregate loss contracts. The net favorable development of prior accident years net claims and claim expenses was driven by better than expected loss emergence. The net favorable development on other small catastrophe events and attritional loss movements was related to lines of business where the Company principally estimates net claims and claim expenses using traditional actuarial methods.
| Three months ended March 31, | 2023 |
|  | (Favorable) adverse development |
| Catastrophe net claims and claim expenses |  |
| Large catastrophe events |  |
| 2022 Weather-Related Large Losses | $ | (7,785) |  |
| 2021 Weather-Related Large Losses | (32,333) |  |
| 2020 Weather-Related Large Loss Events | 6,535 |  |
| 2019 Large Loss Events | (15,369) |  |
| 2018 Large Loss Events | (16,259) |  |
| 2017 Large Loss Events | (11,486) |  |
| Other | 90 |  |
| Total large catastrophe events | (76,607) |  |
| Small catastrophe events and attritional loss movements |  |
| Other small catastrophe events and attritional loss movements | (5,086) |  |
| Total small catastrophe events and attritional loss movements | (5,086) |  |
| Total net (favorable) adverse development of prior accident years net claims and claim expenses | $ | (81,693) |  |
The net favorable development of prior accident years net claims and claim expenses was largely driven by better than expected loss emergence. The net adverse development on other small catastrophe events and attritional loss movements was related to lines of business where the Company principally estimates net claims and claim expenses using traditional actuarial methods. Casualty and Specialty Segment The following table details the development of the Company’s prior accident years net claims and claim expenses for its Casualty and Specialty segment:
| Three months ended March 31, | 2024 |  | 2023 |
|  | (Favorable) adverse development |  | (Favorable) adverse development |
| Actuarial methods - actual reported claims less than expected claims | $ | (2,414) |  |  | $ | (23,059) |  |
| Total net (favorable) adverse development of prior accident years net claims and claim expenses | $ | (2,414) |  |  | $ | (23,059) |  |
The Company principally estimates net claims and claim expenses for the Casualty and Specialty segment using traditional actuarial methods. The net favorable development of prior accident years net claims and claim expenses in the three months ended March 31, 2024, was primarily due to reported losses generally coming in lower than expected on attritional net claims and claim expenses driven by favorable experience within the Company’s other specialty and credit lines of business. The net favorable development of prior accident years net claims and claim expenses in the three months ended March 31, 2023 was primarily due to reported losses generally coming in lower than expected on attritional net claims and claim expenses driven by favorable experience within the Company’s other specialty and credit line of business.

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- Definition The entire disclosure for liabilities related to future policy benefits and unpaid claims and claim adjustments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//944-40/tableOfContent + Details
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