SEGMENT INFORMATION
We write personal and commercial auto insurance, personal residential property insurance, business-related general liability and commercial property insurance predominantly for small businesses, workers’ compensation insurance primarily for the transportation industry, and other specialty property-casualty insurance and provide related services throughout the United States.
Our operating segments are Personal Lines and Commercial Lines, which we report based on product. Our Chief Executive Officer assesses performance and makes key operating decisions for each of our reportable operating segments and, therefore, is considered our chief operating decision maker.
Our Personal Lines segment writes insurance for personal autos, special lines products (e.g., recreational vehicles, such as motorcycles, RVs, and watercraft), personal residential property insurance for homeowners and renters, umbrella insurance, and flood insurance through the “Write Your Own” program for the National Flood Insurance Program.
The Personal Lines segment is written through both the independent agency and direct channels. The agency channel includes business written by our network of more than 40,000 independent insurance agencies, as well as brokerages in New York and California, and strategic alliance business relationships (including other insurance companies, financial institutions, and national agencies). The direct channel includes business written directly by us online or by phone. We operate this segment throughout the United States.
Our Commercial Lines segment writes auto-related liability and physical damage insurance, business-related
general liability and commercial property insurance predominately for small businesses, and workers’ compensation insurance primarily for the transportation industry. This segment operates throughout the United States and is distributed through both the independent agency, including brokerages, and direct channels.
We evaluate operating segment profitability based on pretax underwriting profit (loss). Pretax underwriting profit (loss) is calculated as net premiums earned plus fees and other revenues, less: (i) losses and loss adjustment expenses; (ii) policy acquisition costs; (iii) other underwriting expenses; and (iv) policyholder credit expense.
Our service businesses primarily provide insurance-related services, including serving as an agent for homeowners, general liability, and workers’ compensation insurance, among other products, through programs in our direct Personal Lines and Commercial Lines businesses. Pretax profit (loss) is the difference between service business revenues and service business expenses.
Assets and income taxes are not allocated to operating segments, as such allocation would be impractical. Expense allocations are based on certain assumptions and estimates primarily related to revenue and volume; stated segment operating results would change if different methods were applied. We also do not separately identify depreciation expense by segment. Companywide depreciation expense for 2025, 2024, and 2023, was $313 million, $284 million, and $285 million, respectively. The accounting policies of the operating segments are consistent with those described in Note 1 – Reporting and Accounting Policies.
Operating segment results for the years ended December 31, were as follows:
(millions)Personal LinesCommercial Lines
Other1
Companywide
December 31, 2025
Net premiums earned$70,778 $10,881 $$81,661 
Fees and other revenues1,060 136 1,196 
Total underwriting revenue71,838 11,017 82,857 
Losses and loss adjustment expenses:
Losses (excluding catastrophe losses)39,222 6,080 45,303 
Catastrophe losses1,437 41 1,478 
Loss adjustment expenses6,003 1,175 7,178 
Total losses and loss adjustment expenses46,662 7,296 53,959 
Underwriting expenses:
Distribution expenses2
9,720 1,225 10,949 
Other underwriting expenses3
6,602 1,080 18 7,700 
Total underwriting expenses16,322 2,305 22 18,649 
Pretax underwriting profit (loss)$8,854 $1,416 $(21)10,249 
Investment profit (loss)4
4,276 
Service businesses(24)
Interest expense(278)
Total pretax profit (loss)$14,223 

(millions)Personal LinesCommercial Lines
Other1
Companywide
December 31, 2024
Net premiums earned$60,091 $10,707 $$70,799 
Fees and other revenues893 171 1,064 
Total underwriting revenue60,984 10,878 71,863 
Losses and loss adjustment expenses:
Losses (excluding catastrophe losses)33,684 6,421 10 40,115 
Catastrophe losses2,434 80 2,514 
Loss adjustment expenses5,325 1,109 (3)6,431 
Total losses and loss adjustment expenses41,443 7,610 49,060 
Underwriting expenses:
Distribution expenses2
7,969 1,168 9,138 
Other underwriting expenses3
4,732 964 11 5,707 
Total underwriting expenses12,701 2,132 12 14,845 
Pretax underwriting profit (loss)$6,840 $1,136 $(18)7,958 
Investment profit (loss)4
3,067 
Service businesses(33)
Interest expense(279)
Total pretax profit (loss)$10,713 
(millions)Personal LinesCommercial Lines
Other1
Companywide
December 31, 2023
Net premiums earned$48,765 $9,899 $$58,665 
Fees and other revenues740 149 889 
Total underwriting revenue49,505 10,048 59,554 
Losses and loss adjustment expenses:
Losses (excluding catastrophe losses)31,509 6,866 38,378 
Catastrophe losses1,753 41 1,794 
Loss adjustment expenses4,487 993 5,483 
Total losses and loss adjustment expenses37,749 7,900 45,655 
Underwriting expenses:
Distribution expenses2
4,904 1,073 5,978 
Other underwriting expenses3
3,967 952 10 4,929 
Total underwriting expenses8,871 2,025 11 10,907 
Pretax underwriting profit (loss)$2,885 $123 $(16)2,992 
Investment profit (loss)4
2,219 
Service businesses(39)
Interest expense(268)
Total pretax profit (loss)$4,904 
1 Includes other underwriting businesses and run-off operations.
2 Includes policy acquisition costs, agent contingent commissions, and advertising costs attributable to our operating segments. A portion of our companywide advertising costs are also related to our service businesses.
3 Primarily consists of employee compensation and benefit costs, policyholder credit expense, and the increase in the allowance for credit loss exposure on our premiums receivable.
4 Calculated as recurring investment income plus total net realized gains (losses) on securities, less investment expenses.
For the year ended December 31, 2025, in the table above, other underwriting expenses for the Personal Lines segment included $1,224 million of policyholder credit expense. During 2025, we determined that our personal auto profit in Florida, for the 2023 to 2025 accident-year period, exceeded the statutory profit limit that a Florida statute imposes on the profit that any insurance group can earn on personal auto insurance over any contiguous three-accident-year period. The accrual represents our estimate of the profit we will earn on a three-accident-year period ending December 31, 2025. As a result, our estimate of the profit earned in excess of the permitted limit will be credited to all Florida personal auto policyholders active at December 31, 2025, pro rata based on 2025 earned premium. The expense is reported in policyholder credit expense on our consolidated statements of comprehensive income and the accrual is included in accounts payable, accrued expenses, and other liabilities on our consolidated balance sheets.
The reconciliation of total underwriting revenues to consolidated revenues for the years ended December 31, were as follows:
(millions)202520242023
Total underwriting revenue$82,857 $71,863 $59,554 
Investment income3,583 2,832 1,892 
Total net realized gains (losses) on securities727 264 353 
Service revenues504 413 310 
Total revenues$87,671 $75,372 $62,109 
Our management uses underwriting margin and combined ratio as primary measures of underwriting profitability. The underwriting margin is the pretax underwriting profit (loss), as previously defined, expressed as a percentage of net premiums earned (i.e., revenues from underwriting operations). Fees and other revenues are netted against either loss adjustment expenses or underwriting expenses in the ratio calculations, based on the underlying activity that generated the revenue. Combined ratio is the complement of the underwriting margin. Following are the underwriting margins and combined ratios for our underwriting operations for the years ended December 31:
 202520242023
Underwriting
Margin
Combined
Ratio
Underwriting
Margin
Combined
Ratio
Underwriting
Margin
Combined
Ratio
Personal Lines12.5 %87.5 11.4 %88.6 5.9 %94.1 
Commercial Lines13.0 87.0 10.6 89.4 1.2 98.8 
Total underwriting operations12.6 87.4 11.2 88.8 5.1 94.9 

Historical Timeline

Fiscal YearFiled
2025Mar 2, 2026Showing above
2024Mar 3, 2025
2023Feb 26, 2024
2022Feb 27, 2023
2021Feb 28, 2022
2020Mar 1, 2021
2019Mar 2, 2020
2018Feb 27, 2019
2017Feb 27, 2018
2016Mar 1, 2017
2015Feb 29, 2016

About Segments Disclosures

Segment disclosures break a company into its reportable operating units, revealing revenue, profit, and asset allocation that consolidated financial statements obscure. Under ASC 280, segments must match how the chief operating decision maker views the business, providing a window into internal management structure and resource allocation priorities.

Key signals: compare segment margins to identify which units drive profitability and which destroy value. Watch for changes in the number of reportable segments — segment aggregation or disaggregation often coincides with strategic shifts or attempts to obscure declining performance. Intersegment elimination patterns reveal internal pricing practices. The reconciliation between segment totals and consolidated figures exposes corporate overhead allocation and unallocated items. Geographic revenue concentration highlights regulatory and currency exposure. Compare segment-level capital expenditure against segment revenue to assess where management is investing for future growth versus harvesting existing assets.