Financial Performance - Net earnings attributable to Berkshire shareholders for 2024 were 88.995billion,adecreaseof7.896.223 billion in 2023[277]. - Investment gains for 2024 were 41.558billion,adecreasefrom58.873 billion in 2023, reflecting significant volatility in market prices[277]. - Total revenue for 2024 was 26,348million,aslightincreaseof1.326,008 million in 2023[358]. - Net earnings attributable to Berkshire shareholders increased to 3,730millionin2024,up60.02,331 million in 2023[358]. - After-tax earnings from non-controlled businesses decreased by 231millionin2024comparedto2023,primarilyduetolowerearningsfromKraftHeinzandPilot[435].−Investmentgainsin2024were52.8 billion, a decrease from 74.9billionin2023,whilenetearningswere41.6 billion[438]. - Berkshire's shareholders' equity increased by 88.1billionto649.4 billion as of December 31, 2024[444]. Insurance Operations - Insurance underwriting generated after-tax earnings of 9.0billionin2024,upfrom5.4 billion in 2023, with significant improvements at GEICO[280]. - GEICO's pre-tax underwriting earnings increased to 7.813billionin2024from3.635 billion in 2023, driven by higher average premiums and lower claims frequencies[290]. - Losses and loss adjustment expenses for GEICO decreased by 1.5billion(4.71.7 billion in 2024, compared to 1.4billionin2023[316].−TheBerkshireHathawayReinsuranceGrouprecordedapre−taxchargeof490 million in 2024 related to a settlement agreement concerning non-insurance affiliates[317]. - The company anticipates claims payments in 2025 of approximately 38billionrelatedtoclaimsoccurringpriorto2025[455].−AonepercentagepointchangeinBIclaimsseveritiescouldresultina220 million increase or decrease in recorded liabilities, impacting pre-tax earnings correspondingly[465]. Investment Income - Net investment income for 2024 was 13.67billion,upfrom9.57 billion in 2023, reflecting a significant increase in interest and other investment income[330]. - Interest and other investment income increased by 5.5billionin2024comparedto2023,primarilyduetoincreasesinU.S.TreasuryBillandshort−terminvestmentbalances[331].−Dividendincomedeclinedby302 million (5.5%) in 2024 compared to 2023, reflecting net reductions in equity security holdings[332]. Operating Segments - BNSF's after-tax earnings declined by 1.1% in 2024 compared to 2023, impacted by labor agreement charges and ongoing litigation[281]. - Railroad operating revenues decreased by 0.5% in 2024 to 23.355billioncomparedto2023,withanetvolumeincreaseof6.58.4 billion, driven by a volume increase of 16.2%[343]. - Manufacturing revenues reached 77,231millionin2024,a2.475,405 million in 2023[374]. - Service and retailing revenues decreased by 3.9% to 138,672millionin2024,downfrom144,342 million in 2023[374]. Expenses and Liabilities - Losses and loss adjustment expenses rose by 1.4billion(12.8681 million (15.0%) in 2024, resulting in an expense ratio of 27.8%, up 1.3 percentage points from 2023[308]. - The company recorded approximately 147.6billioninconsolidatedclaimliabilitiesasofDecember31,2024,with7451.636 billion, consisting of 16.570billioninpropertyand35.066 billion in casualty[467]. Capital Management - The company repurchased 2.9billionofitscommonstockin2024,maintainingafocusonfinancialstrengthandliquidity[445].−Cash,cashequivalents,andU.S.TreasuryBillsheldbyinsuranceandotherbusinessestotaled318.0 billion as of December 31, 2024[446]. - Consolidated capital expenditures for 2024 were 19.0billion,withBNSFandBHEforecastingapproximately14.0 billion in capital expenditures for 2025[452]. Miscellaneous - Float was approximately 171billionatDecember31,2024,upfrom169 billion in 2023 and $164 billion in 2022[334]. - The effective income tax rate for BNSF increased to 24.3% in 2024 from 23.1% in 2023[340]. - The methodologies for estimating IBNR liabilities involve various actuarial techniques, including paid and incurred loss development methods and Bornhuetter-Ferguson methods[473][474].