v3.25.4

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Financial instruments owned: |  |
Exchange traded equity securities | $ 12 | $ 7
Mutual funds | 202 | 194
Unit investment trust | 0 | 83
Money market funds | 633 | 353
Total assets measured at fair value | 847 | 637
Fiduciary Assets: |  |
Total fiduciary assets measured at fair value | 322 | 76
Liabilities: |  |
Contingent purchase consideration liability | 268 | 161
Total liabilities measured at fair value | 268 | 161
Identical Assets (Level 1) |  |
Financial instruments owned: |  |
Exchange traded equity securities | 12 | 7
Mutual funds | 202 | 194
Unit investment trust | 0 | 0
Money market funds | 633 | 353
Total assets measured at fair value | 847 | 554
Fiduciary Assets: |  |
Total fiduciary assets measured at fair value | 322 | 76
Liabilities: |  |
Contingent purchase consideration liability | 0 | 0
Total liabilities measured at fair value | 0 | 0
Observable Inputs (Level 2) |  |
Financial instruments owned: |  |
Exchange traded equity securities | 0 | 0
Mutual funds | 0 | 0
Unit investment trust | 0 | 83
Money market funds | 0 | 0
Total assets measured at fair value | 0 | 83
Fiduciary Assets: |  |
Total fiduciary assets measured at fair value | 0 | 0
Liabilities: |  |
Contingent purchase consideration liability | 0 | 0
Total liabilities measured at fair value | 0 | 0
Unobservable Inputs (Level 3) |  |
Financial instruments owned: |  |
Exchange traded equity securities | 0 | 0
Mutual funds | 0 | 0
Unit investment trust | 0 | 0
Money market funds | 0 | 0
Total assets measured at fair value | 0 | 0
Fiduciary Assets: |  |
Total fiduciary assets measured at fair value | 0 | 0
Liabilities: |  |
Contingent purchase consideration liability | 268 | 161
Total liabilities measured at fair value | 268 | 161
Money market funds |  |
Fiduciary Assets: |  |
Total fiduciary assets measured at fair value | 322 | 76
Money market funds | Identical Assets (Level 1) |  |
Fiduciary Assets: |  |
Total fiduciary assets measured at fair value | 322 | 76
Money market funds | Observable Inputs (Level 2) |  |
Fiduciary Assets: |  |
Total fiduciary assets measured at fair value | 0 | 0
Money market funds | Unobservable Inputs (Level 3) |  |
Fiduciary Assets: |  |
Total fiduciary assets measured at fair value | $ 0 | $ 0

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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