We establish loss and loss expense reserves for our liabilities from claims for all of the insurance and reinsurance business that we write. For those claims reported by insureds or ceding companies to us prior to the balance sheet date, and
The standard actuarial reserving methods may include, but are not necessarily limited to, paid and reported loss development, expected loss ratio, and Bornhuetter-Ferguson methods. A general description of these methods is provided below. In the subsequent discussion on short- and long-tail business, reference is also made, where appropriate, to how consideration in method selection impacted 2009 results. In addition to these standard methods, we may use other recognized actuarial methods and approaches depending upon the product line characteristics and available data. To ensure that the projections of future loss emergence based on historical loss development patterns are representative of the underlying business, the historical loss and premium data is required to be of sufficient homogeneity and credibility. For example, to improve data homogeneity, we may group product line data further by similar risk attribute (e.g., geography, coverage such as property versus liability exposure, or origin year), project losses for these homogenous groups and then combine these results to provide the overall product line estimate. The premium and loss data are aggregated by origin year (e.g., the year in which the losses were incurred - “accident year” or “report year”, for example) and annual or quarterly development periods. Implicit in the standard actuarial methods that we generally utilize is the need for two fundamental assumptions: first, the expected loss ratio for each origin year (i.e., accident, report, or underwriting) and second, the pattern by which losses are expected to emerge over time for each origin year.
Our assumed paid and reported development patterns provide a benchmark against which the actual emerging loss experience can be monitored. Where possible, development patterns are selected based on historical loss emergence by origin year with appropriate allowance for changes in business mix, claims handling process, or ceded reinsurance that are likely to lead to a discernible difference between the rate of historical and future loss emergence. For product lines where the historical data
For more mature accident years, typically 2005 and prior, we relied upon paid and reported loss development patterns for older origin years where sufficient credibility existed. For those lines where the historical experience lacked credibility, we placed reliance upon the latest benchmark patterns (where available) from external industry bodies such as Insurance Services Office (ISO) or the National Council on Compensation Insurance, Inc. (NCCI). Accordingly, the assumptions used to project loss estimates will not fully reflect our own actual loss experience until our data is deemed sufficiently credible.
With respect to assumed reinsurance and insurance contracts, products giving rise to judgments regarding risk transfer were primarily sold by our financial solutions business. Although we have significantly curtailed writing financial solutions business, several contracts remain in-force and principally include multi-year retrospectively-rated contracts and loss portfolio transfers. Because transfer of insurance risk is generally a primary client motivation for purchasing these products, relatively
We adopted provisions included in ASC Topic 320, Investments-Debt and Equity Securities, related to the recognition and presentation of OTTI as at April 1, 2009. Under these provisions, if we have the intent to sell an impaired fixed maturity security or it is more likely than not that we will be required to sell the security, an OTTI is considered to have occurred, and we are required to record the OTTI in net income. Further, in cases where we do not intend to sell the security and it is more likely than not that we will not be required to sell the security, we must evaluate the security to determine the portion of the impairment, if any, related to credit losses. If a credit loss is indicated, an OTTI is considered to have occurred and any portion of the OTTI related to credit losses must be reflected in net income while the portion of OTTI related to all other factors is included in other comprehensive income. For fixed maturities held to maturity, OTTI recognized in other comprehensive income is accreted from accumulated other comprehensive income to the amortized cost of the fixed maturity prospectively over the remaining term of the securities. These newly adopted provisions do not have any impact on the accounting for OTTI for any other type of investment.