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Reserve for Claims and Claim Expenses | 3 Months Ended
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Mar. 31, 2018
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 establishes its claims and claim expense reserves by taking claims reported to the Company by insureds and ceding companies, but which have not yet been paid (“case reserves”), adding estimates for the anticipated cost of claims incurred but not yet reported to the Company, or incurred but not enough reported to the Company (collectively referred to as “IBNR”) and, if deemed necessary, adding costs for additional case reserves which represent the Company’s estimates for claims related to specific contracts previously reported to the Company which it believes may not be adequately estimated by the client as of that date, or adequately covered in the application of IBNR. The following table summarizes the Company’s claims and claim expense reserves by segment, allocated between case reserves, additional case reserves and IBNR:
| At March 31, 2018 | Case Reserves |  | Additional Case Reserves |  | IBNR |  | Total |
| Property | $ | 701,202 |  |  | $ | 850,498 |  |  | $ | 687,209 |  |  | $ | 2,238,909 |  |
| Casualty and Specialty | 740,809 |  |  | 118,380 |  |  | 1,801,361 |  |  | 2,660,550 |  |
| Other | 4,999 |  |  | — |  |  | 8,269 |  |  | 13,268 |  |
| Total | $ | 1,447,010 |  |  | $ | 968,878 |  |  | $ | 2,496,839 |  |  | $ | 4,912,727 |  |
| At December 31, 2017 |  |  |  |  |  |  |  |
| Property | $ | 696,285 |  |  | $ | 896,522 |  |  | $ | 893,583 |  |  | $ | 2,486,390 |  |
| Casualty and Specialty | 689,962 |  |  | 124,923 |  |  | 1,760,607 |  |  | 2,575,492 |  |
| Other | 6,605 |  |  | — |  |  | 11,921 |  |  | 18,526 |  |
| Total | $ | 1,392,852 |  |  | $ | 1,021,445 |  |  | $ | 2,666,111 |  |  | $ | 5,080,408 |  |
Activity in the liability for unpaid claims and claim expenses is summarized as follows:
| Three months ended March 31, | 2018 |  | 2017 |
| Net reserves as of January 1 | $ | 3,493,778 |  |  | $ | 2,568,730 |  |
| Net incurred related to: |  |  |  |
| Current year | 203,038 |  |  | 164,075 |  |
| Prior years | (31,335 | ) |  | 29,006 |  |
| Total net incurred | 171,703 |  |  | 193,081 |  |
| Net paid related to: |  |  |  |
| Current year | 9,050 |  |  | 7,729 |  |
| Prior years | 328,129 |  |  | 147,500 |  |
| Total net paid | 337,179 |  |  | 155,229 |  |
| Foreign exchange | 12,104 |  |  | 2,287 |  |
| Net reserves as of March 31 | 3,340,406 |  |  | 2,608,869 |  |
| Reinsurance recoverable as of March 31 | 1,572,321 |  |  | 325,819 |  |
| Gross reserves as of March 31 | $ | 4,912,727 |  |  | $ | 2,934,688 |  |
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 recoverables, as well as changes to loss related premiums such as reinstatement premiums and redeemable noncontrolling interest for changes in claims and claim expenses that impact DaVinciRe, 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 development by segment of its liability for unpaid claims and claim expenses:
| Three months ended March 31, | 2018 |  | 2017 |
|  | (Favorable) adverse development |  | (Favorable) adverse development |
| Property | $ | (27,562 | ) |  | $ | (928 | ) |
| Casualty and Specialty | (3,791 | ) |  | 30,262 |  |
| Other | 18 |  |  | (328 | ) |
| Total favorable development of prior accident years net claims and claim expenses | $ | (31,335 | ) |  | $ | 29,006 |  |
Changes to prior year estimated claims reserves increased the Company’s net income by $31.3 million during the three months ended March 31, 2018, (2017 - decreased the Company’s net income by $29.0 million), excluding the consideration of changes in reinstatement, adjustment or other premium changes, profit commissions, redeemable noncontrolling interest - DaVinciRe and income tax. Property Segment The following tables detail the development of the Company’s liability for unpaid claims and claim expenses for its Property segment, allocated between large and small catastrophe net claims and claim expenses and attritional net claims and claim expenses, included in the other line item:
| Three months ended March 31, | 2018 |
|  | (Favorable) adverse development |
| Catastrophe net claims and claim expenses |  |
| Large catastrophe events |  |
| 2017 Catastrophe Events | $ | (27,109 | ) |
| Other | (4,258 | ) |
| Total large catastrophe events | (31,367 | ) |
| Small catastrophe events |  |
| Other | 3,805 |  |
| Total small catastrophe events | 3,805 |  |
| Total catastrophe net claims and claim expenses | (27,562 | ) |
| Total net favorable development of prior accident years net claims and claim expenses | $ | (27,562 | ) |
The net favorable development of prior accident years net claims and claim expenses within the Company’s Property segment in the three months ended March 31, 2018 of $27.6 million was comprised of net favorable development of $31.4 million related to large catastrophe events and net adverse development of $3.8 million related to small catastrophe events. Included in net favorable development of prior accident years net claims and claim expenses from large events was $27.1 million of net decreases in the estimated ultimate losses associated with Hurricanes Harvey, Irma and Maria, the Mexico City Earthquake and the wildfires in California during the fourth quarter of 2017 (collectively, the “2017 Catastrophe Events”). In addition, the Company’s Property segment experienced net favorable development of $0.5 million associated with a number of other large and small catastrophe events.
| Three months ended March 31, | 2017 |
|  | (Favorable) adverse development |
| Catastrophe net claims and claim expenses |  |
| Large catastrophe events |  |
| Other | $ | 2,586 |  |
| Total large catastrophe events | 2,586 |  |
| Small catastrophe events |  |
| Fort McMurray Wildfire (2016) | (5,850 | ) |
| Other | 2,336 |  |
| Total small catastrophe events | (3,514 | ) |
| Total catastrophe net claims and claim expenses | (928 | ) |
| Total net favorable development of prior accident years net claims and claim expenses | $ | (928 | ) |
The net favorable development of prior accident years net claims and claim expenses within the Company’s Property segment in the three months ended March 31, 2017 of $0.9 million was principally comprised of net favorable development of $3.5 million associated with small catastrophe events related to a reduction in the estimated ultimate losses associated with the 2016 Fort McMurray Wildfire of $5.9 million, partially offset by net adverse development associated with a number of other large and small events. In addition, the Company experienced net favorable development of $2.6 million from large catastrophe events due principally to a decrease in the estimated ultimate losses associated with a number of other small catastrophe events. Casualty and Specialty Segment The following table details the development of the Company’s liability for unpaid claims and claim expenses for its Casualty and Specialty segment:
| Three months ended March 31, | 2018 |  | 2017 |
|  | (Favorable) adverse development |  | (Favorable) adverse development |
| Actuarial methods | $ | (3,791 | ) |  | $ | (5,999 | ) |
| Ogden Rate change | — |  |  | 33,481 |  |
| Actuarial assumption changes | — |  |  | 2,780 |  |
| Total adverse (favorable) development of prior accident years net claims and claim expenses | $ | (3,791 | ) |  | $ | 30,262 |  |
The net favorable development of prior accident years net claims and claim expenses within the Company’s Casualty and Specialty segment in the three months ended March 31, 2018 of $3.8 million was driven by reported losses generally coming in lower than expected on attritional net claims and claim expenses across a number of lines of business. The net adverse development of prior accident years net claims and claim expenses within the Company’s Casualty and Specialty segment in the three months ended March 31, 2017 of $30.3 million was driven by $33.5 million of adverse development associated with the change in the discount rate used to calculate lump sum awards in U.K. bodily injury cases (the “Ogden Rate”), from 2.5%, to minus 0.75%. Notwithstanding the impact of the Ogden Rate change, the Company experienced $6.0 million of net favorable development related to reported losses coming in lower than expected on attritional net claims and claim expenses across a number of lines of business, partially offset by $2.8 million of adverse development associated with actuarial assumption changes.

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -URI http://asc.fasb.org/subtopic&trid=2560295 + Details
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