Company: BRK-A
Filing Date: 2025-02-24
Form Type: 10-K
Source: 0000950170-25-025210
Chunk: 159

Company: BERKSHIRE HATHAWAY INC
Filing Date: 2025-02-24
Form: 10-K
Item: Item 1B
Chunk 159
---
        $
        24,335

       * Unaudited required supplemental information BHRG We use a variety of methodologies to establish BHRG’s estimates for property and casualty claim liabilities. These methodologies include paid and incurred loss development techniques, incurred and paid loss Bornhuetter-Ferguson techniques and frequency and severity techniques, as well as ground-up techniques when appropriate. 

K-93

Notes to Consolidated Financial Statements (16)Unpaid losses and loss adjustment expenses Our claim liabilities are principally a function of reported losses from ceding companies, case development and IBNR liability estimates. Case loss estimates are reported either individually or in bulk as provided under the terms of the contracts. We may independently evaluate case losses reported by the ceding company, and if deemed appropriate, establish additional case liabilities based on our estimates.Estimated IBNR liabilities are affected by expected case loss emergence patterns and expected loss ratios, which are evaluated as groups of contracts with similar exposures or on a contract-by-contract basis. Estimated case and IBNR liabilities for major catastrophe events are generally based on a per-contract assessment of the ultimate cost associated with the individual loss event. Claim count data is not provided consistently by ceding companies under our contracts or is otherwise considered unreliable. BHRG’s net losses and ALAE incurred and paid are disaggregated and summarized by accident year based on losses that are expected to have shorter claim-tails (property) and losses expected to have longer claim-tails (casualty). Under certain contracts, the coverage can apply to multiple lines of business written by the ceding company, whether property, casualty or combined, and the ceding company may not report loss data by such lines consistently, if at all. In those instances, we allocated losses to property and casualty coverages based on internal estimates. IBNR and case development liabilities are as of December 31, 2024. Dollars are in millions. Property  

        Losses and ALAE Incurred through December 31,

        AccidentYear
         
        2015*

        2016*

        2017*

        2018*

        2019*

        2020*

        2021*

        2022*

        2023*

        2024

        IBNR and CaseDevelopmentLiabilities

        2015
         
        $
        3,587

        $
        3,392

        $
        2,827

        $
        3,218

        $
        3