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Fair Value Measurements | 12 Months Ended
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Dec. 31, 2025
Fair Value Disclosures [Abstract] |
Fair Value Measurements | FAIR VALUE MEASUREMENTS Accounting standards establish a three-tier fair value hierarchy that prioritizes the inputs used in measuring fair values as follows: Level 1: Observable inputs such as quoted prices for identical assets in active markets; Level 2: Inputs other than quoted prices for identical assets in active markets, that are observable either directly or indirectly; and Level 3: Unobservable inputs in which there is little or no market data which requires the use of valuation techniques and the development of assumptions. The level in the fair value hierarchy within which the fair value measurement is classified is determined based on the lowest level of input that is significant to the fair value measurement in its entirety. The carrying amount of financial assets and liabilities reported on the Consolidated Balance Sheets for commissions and fees receivable–net, other current assets, accounts payable, short-term debt, and other accrued liabilities as of December 31, 2025 and 2024, approximate fair value because of the short-term duration of these instruments. The fair value of long-term debt, including the Term Loan, Senior Secured Notes, any current portion of such debt, and the units subject to mandatory redemption, which were included only as of December 31, 2024, was $3,308.4 million and $3,275.1 million as of December 31, 2025 and 2024, respectively. The fair value of the Term Loan and Senior Secured Notes would be classified as Level 2 in the fair value hierarchy and the units subject to mandatory redemption would have been classified as Level 3. See Note 8, Debt, for the carrying values of the Company’s debt. Derivative Instruments Deal-Contingent Foreign Currency Forward The Company entered into the Deal-Contingent Forward to manage the risk of appreciation of the GBP-denominated purchase price of the Castel acquisition. The fair value of the Deal-Contingent Forward was determined by comparing the contractual foreign exchange rates to forward market rates for various future dates, probability weighted for when the acquisition was anticipated to close, and discounted to the valuation date. The lowest level of inputs used that were significant in determining the fair value were considered Level 3 inputs. See Note 12, Derivatives, for further information on the Deal-Contingent Forward. Interest Rate Cap The Company used an interest rate cap to manage its exposure to interest rate fluctuations related to the Company’s Term Loan. The fair value of the interest rate cap was determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates rose above the strike rate of the cap. The variable interest rates used in the calculation of projected receipts on the cap were based on an expectation of future interest rates derived from observable market interest rate curves and volatilities. The inputs used in determining the fair value of the interest rate cap were considered Level 2 inputs. See Note 12, Derivatives, for further information on the interest rate cap. Contingent Consideration The fair values of contingent consideration and contingently returnable consideration are based on the present value of the future expected payments to be made to the sellers and to be received from the sellers, respectively, of certain acquired businesses in accordance with the provisions outlined in the respective purchase agreements, which are Level 3 fair value measurements. In determining fair value, the Company estimates cash payments and receipts based on management’s financial projections of the performance of each acquired business relative to the formula specified by each purchase agreement. The Company utilizes Monte Carlo simulations to evaluate financial projections of each acquired business. The Monte Carlo models consider forecasted revenue and EBITDA and market risk-adjusted revenue and EBITDA, which are run through a series of simulations. As of December 31, 2025, the models used risk-free rates, expected volatility, and a credit spread that ranged from 1.9% to 3.7%, 6.2% to 21.5%, and 0.8% to 2.7%, respectively. As of December 31, 2024, the models used risk-free rates, expected volatility, and a credit spread that ranged from 3.5% to 5.4%, 6.8% to 18.7%, and 0.7% to 2.6%, respectively. The Company discounts the expected payments created by the Monte Carlo model to present value using a risk-adjusted rate that takes into consideration the market-based rates of return that reflect the ability of the acquired entity to achieve its targets. The discount rate ranges used to present value the cash payments as of December 31, 2025 and 2024, were 4.2% to 6.4% and 5.0% to 6.6%, respectively. Each period, the Company revalues the contingent consideration and contingently returnable consideration associated with certain prior acquisitions to their fair value and records the related changes of the fair value in Change in contingent consideration on the Consolidated Statements of Income. Changes in contingent consideration result from changes in the assumptions regarding probabilities of successful achievement of related EBITDA and revenue milestones, the estimated timing in which milestones are achieved, and the discount rate used to estimate the fair value of the liability. Contingent consideration may change significantly as the Company’s revenue growth rate and EBITDA estimates evolve and additional data is obtained, impacting the Company’s assumptions. The use of different assumptions and judgments could result in a materially different estimate of fair value which may have a material impact on the results from operations and financial position. See Note 4, Mergers and Acquisitions, for further information on contingent consideration. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis by fair value hierarchy input level:
| As of December 31, 2025 |  | As of December 31, 2024 |
| Level 1 |  | Level 2 |  | Level 3 |  | Level 1 |  | Level 2 |  | Level 3 |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Interest rate cap | $— |  | $— |  | $— |  | $— |  | $13,936 |  | $— |
Contingently returnable consideration | — |  | — |  | 6,550 |  | — |  | — |  | 5,483 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration | — |  | — |  | 148,388 |  | — |  | — |  | 129,059 |
Total assets and liabilities measured at fair value | $— |  | $— |  | $154,938 |  | $— |  | $13,936 |  | $134,542 |
Contingently returnable consideration of $3.3 million and $1.3 million was recorded in Other current assets on the Consolidated Balance Sheets as of December 31, 2025 and 2024, respectively. Contingently returnable consideration of $3.3 million and $4.2 million was recorded in Other non-current assets on the Consolidated Balance Sheets as of December 31, 2025 and 2024, respectively. Contingent consideration of $55.9 million and $48.2 million was recorded in Accounts payable and accrued liabilities on the Consolidated Balance Sheets as of December 31, 2025 and 2024, respectively. Contingent consideration of $92.5 million and $80.9 million was recorded in Other non-current liabilities on the Consolidated Balance Sheets as of December 31, 2025 and 2024, respectively. Level 3 Assets and Liabilities Measured at Fair Value The following is a reconciliation of the beginning and ending balances of the Level 3 assets and liabilities measured at fair value:
| Year Ended December 31, |
| 2025 |  | 2024 |
Assets |  |  |  |
Balance at beginning of period | $5,483 |  | $— |
Newly established assets due to acquisitions | — |  | 4,868 |
Total gains included in earnings | 2,567 |  | 684 |
Foreign currency translation adjustments included in OCI | 427 |  | (69) |
Settlements | (1,927) |  | — |
Balance at end of period | $6,550 |  | $5,483 |
Liabilities |  |  |  |
Balance at beginning of period | $129,059 |  | $41,902 |
Newly established liabilities due to acquisitions 1 | 46,002 |  | 103,769 |
Total (gains) losses included in earnings | 23,779 |  | (12,171) |
Foreign currency translation adjustments included in OCI | 22 |  | — |
Settlements | (49,007) |  | (5,384) |
Acquisition measurement period adjustments | (1,467) |  | 943 |
Balance at end of period | $148,388 |  | $129,059 |
1 For the year ended December 31, 2025, the activity includes contingent consideration liabilities established for immaterial acquisitions not disclosed in Note 4, Mergers and Acquisitions. For the year ended December 31, 2025, the $1.9 million settlement of contingently returnable consideration is presented in the financing section of the Consolidated Statements of Cash Flows. For the year ended December 31, 2025, $19.4 million and $29.3 million of contingent consideration settlements are presented in the operating and financing sections, respectively, of the Consolidated Statements of Cash Flows. For the year ended December 31, 2024, $5.4 million related to the loss on the settlement of the Deal-Contingent Forward is presented in the operating section of the Consolidated Statements of Cash Flows.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 107 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-107 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 940 -SubTopic 820 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478119/940-820-50-1 + Details
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