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Fair Value | 12 Months Ended
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Dec. 31, 2025
Fair Value Disclosures [Abstract] |
Fair Value | Accounting guidance regarding fair value measurements addresses how companies should measure fair value when they are required to use a fair value measure for recognition or disclosure purposes under GAAP and provides a common definition of fair value to be used throughout GAAP. It defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly fashion between market participants at the measurement date. In addition, it establishes a three-level valuation hierarchy for the disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The level in the hierarchy within which a given fair value measurement falls is determined based on the lowest level input that is significant to the measurement (Level 1 being the highest priority and Level 3 being the lowest priority). The levels in the hierarchy are defined as follows:
Level 1: | Inputs to the valuation methodology are observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets
Level 2: | Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument
Level 3: | Inputs to the valuation methodology are unobservable and significant to the fair value measurement
Following is a description of the valuation methodologies used for securities measured at fair value, as well as the general classification of such securities pursuant to the valuation hierarchy. The Company reviews its securities measured at fair value and discusses the proper classification of such investments with investment advisers and others. The Company determines the existence of an active market based on its judgment as to whether transactions for the financial instrument occur in such market with sufficient frequency and volume to provide reliable pricing information. The independent pricing sources obtain market quotations and actual transaction prices for securities that have quoted prices in active markets. The Company uses quoted values and other data provided by nationally recognized independent pricing sources as inputs into its process for determining fair values of its fixed maturity investments. To validate the techniques or models used by pricing sources, the Company's review process includes, but is not limited to: (i) quantitative analysis (e.g., comparing the quarterly return for each managed portfolio to its target benchmark, with significant differences identified and investigated); (ii) a review of the prices obtained in the pricing process and the range of resulting fair values; (iii) initial and ongoing evaluation of methodologies used by outside parties to calculate fair value; (iv) a comparison of the fair value estimates to the Company’s knowledge of the current market; (v) a comparison of the pricing services' fair values to other pricing services' fair values for the same investments; and (vi) periodic back-testing, which includes randomly selecting purchased or sold securities and comparing the executed prices to the fair value estimates from the pricing service. A price source hierarchy was maintained in order to determine which price source would be used (i.e., a price obtained from a pricing service with more seniority in the hierarchy will be used over a less senior one in all cases). The hierarchy prioritizes pricing services based on availability and reliability and assigns the highest priority to index providers. Based on the above review, the Company will challenge any prices for a security or portfolio which are considered not to be representative of fair value. In certain circumstances, when fair values are unavailable from these independent pricing sources, quotes are obtained directly from broker-dealers who are active in the corresponding markets. Such quotes are subject to the validation procedures noted above. Of the $40.3 billion of financial assets and liabilities measured at fair value at December 31, 2025, approximately $278 million, or 0.7%, were priced using non-binding broker-dealer quotes. Of the $35.0 billion of financial assets and liabilities measured at fair value at December 31, 2024, approximately $185 million, or 0.5%, were priced using non-binding broker-dealer quotes. Fixed maturities The Company uses the market approach valuation technique to estimate the fair value of its fixed maturity securities, when possible. The market approach includes obtaining prices from independent pricing services, such as index providers and pricing vendors, as well as to a lesser extent quotes from broker-dealers. The independent pricing sources obtain market quotations and actual transaction prices for securities that have quoted prices in active markets. Each source has its own proprietary method for determining the fair value of securities that are not actively traded. In general, these methods involve the use of “matrix pricing” in which the independent pricing source uses observable market inputs including, but not limited to, investment yields, credit risks and spreads, benchmarking of like securities, broker-dealer quotes, reported trades and sector groupings to determine a reasonable fair value. The following describes the significant inputs generally used to determine the fair value of the Company’s fixed maturity securities by asset class: U.S. government and government agencies – valuations provided by independent pricing services, with all prices provided through index providers and pricing vendors. The Company determined that all U.S. Treasuries would be classified as Level 1 securities due to observed levels of trading activity, the high number of strongly correlated pricing quotes received on U.S. Treasuries and other factors. The fair values of U.S. government agency securities are generally determined using the spread above the risk-free yield curve. As the yields for the risk-free yield curve and the spreads for these securities are observable market inputs, the fair values of U.S. government agency securities are classified within Level 2. Corporate bonds – valuations provided by independent pricing services, substantially all through index providers and pricing vendors with a small amount through broker-dealers. The fair values of these securities are generally determined using the spread above the risk-free yield curve. These spreads are generally obtained from the new issue market, secondary trading and from broker-dealers who trade in the relevant security market. As the significant inputs used in the pricing process for corporate bonds are observable market inputs, the fair value of these securities are classified within Level 2. A small number of securities are included in Level 3 due to the lack of an available independent price source for such securities. As the significant inputs used to price these securities are unobservable, the fair value of such securities are classified as Level 3. Residential mortgage-backed securities – valuations provided by independent pricing services, substantially all through pricing vendors and index providers with a small amount through broker-dealers. The fair values of these securities are generally determined through the use of pricing models (including Option Adjusted Spread) which use spreads to determine the expected average life of the securities. These spreads are generally obtained from the new issue market, secondary trading and from broker-dealers who trade in the relevant security market. The pricing services also review prepayment speeds and other indicators, when applicable. As the significant inputs used in the pricing process for mortgage-backed securities are observable market inputs, the fair value of these securities are classified within Level 2. Municipal bonds – valuations provided by independent pricing services, with all prices provided through index providers and pricing vendors. The fair values of these securities are generally determined using spreads obtained from broker-dealers who trade in the relevant security market, trade prices and the new issue market. As the significant inputs used in the pricing process for municipal bonds are observable market inputs, the fair value of these securities are classified within Level 2. Commercial mortgage-backed securities – valuations provided by independent pricing services, substantially all through index providers and pricing vendors with a small amount through broker-dealers. The fair values of these securities are generally determined through the use of pricing models which use spreads to determine the appropriate average life of the securities. These spreads are generally obtained from the new issue market, secondary trading and from broker-dealers who trade in the relevant security market. As the significant inputs used in the pricing process for commercial mortgage-backed securities are observable market inputs, the fair value of these securities are classified within Level 2. Non-U.S. government securities – valuations provided by independent pricing services, with all prices provided through index providers and pricing vendors. The fair values of these securities are generally based on international indices or valuation models which include daily observed yield curves, cross-currency basis index spreads and country credit spreads. As the significant inputs used in the pricing process for non-U.S. government securities are observable market inputs, the fair value of these securities are classified within Level 2. Asset-backed securities – valuations provided by independent pricing services, substantially all through index providers and pricing vendors with a small amount through broker-dealers. The fair values of these securities are generally determined through the use of pricing models (including Option Adjusted Spread) which use spreads to determine the appropriate average life of the securities. These spreads are generally obtained from the new issue market, secondary trading and from broker-dealers who trade in the relevant security market. As the significant inputs used in the pricing process for asset-backed securities are observable market inputs, the fair value of these securities are classified within Level 2. A small number of securities are included in Level 3 due to a low level of transparency on the inputs used in the pricing process. Equity securities The Company determined that exchange-traded equity securities would be included in Level 1 as their fair values are based on quoted market prices in active markets. Other equity securities are included in Level 2 of the valuation hierarchy. A small number of securities are included in Level 3 due to the lack of an available independent price source for such securities. As the significant inputs used to price these securities are unobservable, the fair value of such securities are classified as Level 3. Other investments The Company determined that exchange-traded investments would be included in Level 1 as their fair values are based on quoted market prices in active markets. Other investments also include term loan investments for which fair values are estimated by using quoted prices of term loan investments with similar characteristics, pricing models or matrix pricing. Such investments are generally classified within Level 2. A small number of securities are included in Level 3 due to the lack of an available independent price source for such securities. Derivative instruments The Company’s futures contracts, foreign currency forward contracts, interest rate swaps and other derivatives trade in the over-the-counter derivative market. The Company uses the market approach valuation technique to estimate the fair value for these derivatives based on significant observable market inputs from third party pricing vendors, non-binding broker-dealer quotes and/or recent trading activity. As the significant inputs used in the pricing process for these derivative instruments are observable market inputs, the fair value of these securities are classified within Level 2. Short-term investments The Company determined that certain of its short-term investments held in highly liquid money market-type funds, Treasury bills and commercial paper would be included in Level 1 as their fair values are based on quoted market prices in active markets. The fair values of certain short-term investments are generally determined using the spread above the risk-free yield curve and are classified within Level 2. Other short-term investments are included in Level 3 due to the lack of an available independent price source for such securities. As the significant inputs used to price these short-term securities are unobservable, the fair value of such securities are classified as Level 3. Residential mortgage loans The Company’s residential mortgage loans (included in ‘other assets’ in the consolidated balance sheets) include amounts related to the Company’s whole mortgage loan purchase and sell program. Fair values of residential mortgage loans are generally determined based on market prices. As significant inputs used in pricing process for these residential mortgage loans are observable market inputs, the fair value of these securities are classified within Level 2. Other liabilities The Company’s other liabilities include contingent and deferred consideration liabilities related to the Company’s acquisitions. Contingent consideration liabilities are remeasured at fair value at each balance sheet date with changes in fair value recognized in ‘net realized gains (losses).’ To determine the fair value of contingent consideration liabilities, the Company estimates the future payments using an income approach based on modeled inputs which include a weighted average cost of capital. Deferred consideration liabilities are measured at fair value on the transaction date. The Company determined that contingent and deferred consideration liabilities would be included within Level 3. The following table presents the Company’s financial assets and liabilities measured at fair value by level at December 31, 2025:
|  |  | Fair Value Measurement Using:
| Estimated Fair Value |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Assets measured at fair value: |  |  |  |  |  |  |
Available for sale securities: |  |  |  |  |  |  |
Fixed maturities: |  |  |  |  |  |  |
Corporate bonds | $ | 14,058 |  |  | $ | — |  |  | $ | 13,930 |  |  | $ | 128 |
U.S. government and government agencies | 7,445 |  |  | 7,445 |  |  | — |  |  | — |
Asset backed securities | 3,574 |  |  | — |  |  | 3,557 |  |  | 17 |
Non-U.S. government securities | 3,270 |  |  | — |  |  | 3,270 |  |  | — |
Residential mortgage backed securities | 2,705 |  |  | — |  |  | 2,705 |  |  | — |
Commercial mortgage backed securities | 1,212 |  |  | — |  |  | 1,212 |  |  | — |
Municipal bonds | 162 |  |  | — |  |  | 162 |  |  | — |
Total | 32,426 |  |  | 7,445 |  |  | 24,836 |  |  | 145 |
Short-term investments | 2,625 |  |  | 2,326 |  |  | 299 |  |  | — |
Equity securities, at fair value | 1,864 |  |  | 1,829 |  |  | 26 |  |  | 9 |
Derivative instruments (1) | 180 |  |  | — |  |  | 180 |  |  | — |
Residential mortgage loans | 24 |  |  | — |  |  | 24 |  |  | — |
Fair value option: |  |  |  |  |  |  |
Corporate bonds | 1,102 |  |  | — |  |  | 1,102 |  |  | — |
Non-U.S. government bonds | 3 |  |  | — |  |  | 3 |  |  | — |
Asset backed securities | — |  |  | — |  |  | — |  |  | — |
U.S. government and government agencies | 5 |  |  | 5 |  |  | — |  |  | — |
Short-term investments | 64 |  |  | 2 |  |  | 22 |  |  | 40 |
Equity securities | 5 |  |  | — |  |  | — |  |  | 5 |
Other investments | 398 |  |  | — |  |  | 166 |  |  | 232 |
Other investments measured at net asset value (2) | 1,559 |  |  |  |  |  |  |
Total | 3,136 |  |  | 7 |  |  | 1,293 |  |  | 277 |
Total assets measured at fair value | $ | 40,255 |  |  | $ | 11,607 |  |  | $ | 26,658 |  |  | $ | 431 |
Liabilities measured at fair value: |  |  |  |  |  |  |
Other liabilities | $ | (18) |  |  | $ | — |  |  | $ | — |  |  | $ | (18) |
Derivative instruments (1) | (72) |  |  | — |  |  | (72) |  |  | — |
Total liabilities measured at fair value | $ | (90) |  |  | $ | — |  |  | $ | (72) |  |  | $ | (18) |
(1) See note 11. (2) In accordance with applicable accounting guidance, certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheets. The following table presents the Company’s financial assets and liabilities measured at fair value by level at December 31, 2024:
|  |  | Fair Value Measurement Using:
| Estimated Fair Value |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Assets measured at fair value: |  |  |  |  |  |  |
Available for sale securities: |  |  |  |  |  |  |
Fixed maturities: |  |  |  |  |  |  |
Corporate bonds | $ | 12,487 |  |  | $ | — |  |  | $ | 12,390 |  |  | $ | 97 |
U.S. government and government agencies | 6,710 |  |  | 6,709 |  |  | 1 |  |  | — |
Asset backed securities | 2,900 |  |  | — |  |  | 2,900 |  |  | — |
Non-U.S. government securities | 2,538 |  |  | — |  |  | 2,538 |  |  | — |
Residential mortgage backed securities | 1,079 |  |  | — |  |  | 1,079 |  |  | — |
Commercial mortgage backed securities | 1,058 |  |  | — |  |  | 1,058 |  |  | — |
Municipal bonds | 263 |  |  | — |  |  | 263 |  |  | — |
Total | 27,035 |  |  | 6,709 |  |  | 20,229 |  |  | 97 |
Equity securities, at fair value | 1,675 |  |  | 1,640 |  |  | 28 |  |  | 7 |
Short-term investments | 2,784 |  |  | 2,704 |  |  | 80 |  |  | — |
Derivative instruments (1) | 206 |  |  | — |  |  | 206 |  |  | — |
Residential mortgage loans | 15 |  |  | — |  |  | 15 |  |  | — |
Fair value option: |  |  |  |  |  |  |
Corporate bonds | 832 |  |  | — |  |  | 832 |  |  | — |
Non-U.S. government bonds | 8 |  |  | — |  |  | 8 |  |  | — |
Asset backed securities | — |  |  | — |  |  | — |  |  | — |
U.S. government and government agencies | 14 |  |  | 14 |  |  | — |  |  | — |
Short-term investments | 70 |  |  | — |  |  | 37 |  |  | 33 |
Equity securities | 6 |  |  | 2 |  |  | — |  |  | 4 |
Other investments | 752 |  |  | — |  |  | 563 |  |  | 189 |
Other investments measured at net asset value (2) | 1,383 |  |  |  |  |  |  |
Total | 3,065 |  |  | 16 |  |  | 1,440 |  |  | 226 |
Total assets measured at fair value | $ | 34,780 |  |  | $ | 11,069 |  |  | $ | 21,998 |  |  | $ | 330 |
Liabilities measured at fair value: |  |  |  |  |  |  |
Other liabilities | $ | (73) |  |  | $ | — |  |  | $ | — |  |  | $ | (73) |
Derivative instruments (1) | (115) |  |  | — |  |  | (115) |  |  | — |
Total liabilities measured at fair value | $ | (188) |  |  | $ | — |  |  | $ | (115) |  |  | $ | (73) |
(1) See note 11. (2) In accordance with applicable accounting guidance, certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheets. The following table presents a reconciliation of the beginning and ending balances for all financial assets and liabilities measured at fair value on a recurring basis using Level 3 inputs for 2025 and 2024:
|  | Assets |  | Liabilities
| Available For Sale |  |  |  |  | Fair Value Option |  | Fair Value |  |  |  |
| Structured Securities (1) | Corporate Bonds | Short-term Investments |  |  |  |  |  | Other Investments | Short-term Investments | Equity Securities |  | Equity Securities |  |  |  | Other Liabilities
Year Ended December 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of year | $ | — |  | $ | 97 |  | $ | — |  |  |  |  |  |  | $ | 189 |  | $ | 33 |  | $ | 4 |  |  | $ | 7 |  |  |  |  | $ | (73) |
Total gains or (losses) (realized/unrealized) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Included in earnings (2) | — |  | 1 |  | — |  |  |  |  |  |  | — |  | — |  | 1 |  |  | — |  |  |  |  | 2 |
Included in other comprehensive income | — |  | 1 |  | — |  |  |  |  |  |  | — |  | — |  | — |  |  | — |  |  |  |  | (2) |
Purchases, issuances, sales and settlements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases | 14 |  | 1 |  | — |  |  |  |  |  |  | 190 |  | 67 |  | — |  |  | 2 |  |  |  |  | — |
Issuances | — |  | — |  | — |  |  |  |  |  |  | — |  | — |  | — |  |  | — |  |  |  |  | — |
Sales | — |  | — |  | — |  |  |  |  |  |  | (5) |  | — |  | — |  |  | — |  |  |  |  | — |
Settlements | (2) |  | (60) |  | — |  |  |  |  |  |  | (146) |  | (60) |  | — |  |  | — |  |  |  |  | 55 |
Transfers in and/or out of Level 3 | 5 |  | 88 |  | — |  |  |  |  |  |  | 4 |  | — |  | — |  |  | — |  |  |  |  | — |
Balance at end of year | $ | 17 |  | $ | 128 |  | $ | — |  |  |  |  |  |  | $ | 232 |  | $ | 40 |  | $ | 5 |  |  | $ | 9 |  |  |  |  | $ | (18) |
Year Ended December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of year | $ | — |  | $ | 147 |  | $ | 84 |  |  |  |  |  |  | $ | 106 |  | $ | 10 |  | $ | 4 |  |  | $ | 5 |  |  |  |  | $ | (22) |
Total gains or (losses) (realized/unrealized) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Included in earnings (2) | — |  | 1 |  | — |  |  |  |  |  |  | (5) |  | — |  | — |  |  | — |  |  |  |  | 10 |
Included in other comprehensive income | — |  | 2 |  | 1 |  |  |  |  |  |  | — |  | — |  | — |  |  | — |  |  |  |  | 1 |
Purchases, issuances, sales and settlements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases | — |  | 100 |  | 12 |  |  |  |  |  |  | 148 |  | 41 |  | — |  |  | 2 |  |  |  |  | — |
Issuances | — |  | — |  | — |  |  |  |  |  |  | — |  | — |  | — |  |  | — |  |  |  |  | (64) |
Sales | — |  | — |  | — |  |  |  |  |  |  | (5) |  | — |  | — |  |  | — |  |  |  |  | — |
Settlements | — |  | (153) |  | (97) |  |  |  |  |  |  | (70) |  | (18) |  | — |  |  | — |  |  |  |  | 2 |
Transfers in and/or out of Level 3 | — |  | — |  | — |  |  |  |  |  |  | 15 |  | — |  | — |  |  | — |  |  |  |  | — |
Balance at end of year | $ | — |  | $ | 97 |  | $ | — |  |  |  |  |  |  | $ | 189 |  | $ | 33 |  | $ | 4 |  |  | $ | 7 |  |  |  |  | $ | (73) |
(1) Includes asset backed securities, mortgage backed securities and commercial mortgage backed securities. (2) Gains or losses were included in net realized gains (losses). Financial Instruments Disclosed, But Not Carried, At Fair Value The Company uses various financial instruments in the normal course of its business. The carrying values of cash, accrued investment income, receivable for securities sold, certain other assets, payable for securities purchased and certain other liabilities approximated their fair values at December 31, 2025, due to their respective short maturities. As these financial instruments are not actively traded, their respective fair values are classified within Level 2. At December 31, 2025, the Company’s senior notes were carried at their cost, net of debt issuance costs, of $2.7 billion and had a fair value of $2.5 billion. At December 31, 2024, the Company’s senior notes were carried at their cost, net of debt issuance costs, of $2.7 billion and had a fair value of $2.4 billion. The fair values of the senior notes were obtained from a third party pricing service and are based on observable market inputs. As such, the fair value of the senior notes is classified within Level 2. Fair Value Measurements on a Non-Recurring Basis The Company measures the fair value of certain assets on a non-recurring basis, generally quarterly, annually, or when events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. These assets include investments accounted for using the equity method, certain other investments, goodwill and intangible assets, and long-lived assets. The Company uses a variety of techniques to measure the fair value of these assets when appropriate, as described below: Investments accounted for using the equity method. When the Company determines that the carrying value of these assets may not be recoverable, the Company records the assets at fair value with the loss recognized in income. In such cases, the Company measures the fair value of these assets using the techniques discussed above in “—Fair Value Measurements on a Recurring Basis.” Goodwill and Intangible Assets. The Company tests goodwill and intangible assets annually for impairment or whenever events or changes in circumstances indicate the carrying amount may not be recoverable. When the Company determines goodwill and intangible assets may be impaired, the Company uses techniques including discounted expected future cash flows, to measure fair value. Long-Lived Assets. The Company tests its long-lived assets for impairment whenever events or changes in circumstances indicate the carrying amount of a long-lived asset may not be recoverable.

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- Definition The entire disclosure of the fair value measurement of assets and liabilities, which includes financial instruments measured at fair value that are classified in shareholders' equity, which may be measured on a recurring or nonrecurring basis. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/820/tableOfContent + Details
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