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CONSOLIDATED SPONSORED INVESTMENT PRODUCTS - Fair Value Measurements (Details) - Fair value, measurements, recurring - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash equivalents | $ 2,735.3 | $ 1,678.1
Other investments | 0.1 | 0.7
Total | 4,138.4 | 2,937.8
Level 1 | Consolidated T. Rowe Price investment products |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash equivalents | 5.8 | 17.2
Equity securities | 325.3 | 365.1
Fixed income securities | 0.0 | 0.0
Other investments | 1.4 | 3.6
Total | 332.5 | 385.9
Liabilities | (1.1) | (5.1)
Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash equivalents | 0.0 | 0.0
Other investments | 0.0 | 0.0
Total | 65.1 | 50.2
Level 2 | Consolidated T. Rowe Price investment products |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash equivalents | 3.6 | 8.0
Equity securities | 266.9 | 213.6
Fixed income securities | 1,151.7 | 1,241.9
Other investments | 21.6 | 22.8
Total | 1,443.8 | 1,486.3
Liabilities | $ (13.0) | $ (16.2)

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