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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Contingent consideration liability | $ 131.3 | $ 306.3
Discretionary investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 241.4 | 518.7
Seed capital |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 177.1 | 264.8
Supplemental savings plan liability economic hedges |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 669.5 | 881.5
Level 1 | Fair value, measurements, recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash equivalents held in money market funds | 1,917.3 | 1,183.9
Other investments | 0.7 | 0.7
Investments in affiliated collateralized loan obligations | 0.0 | 0.0
Total | 2,976.0 | 2,826.2
Contingent consideration liability | 0.0 | 0.0
Level 1 | Fair value, measurements, recurring | Discretionary investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 241.4 | 518.7
Level 1 | Fair value, measurements, recurring | Seed capital |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 147.1 | 241.4
Level 1 | Fair value, measurements, recurring | Supplemental savings plan liability economic hedges |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 669.5 | 881.5
Level 2 | Fair value, measurements, recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash equivalents held in money market funds | 0.0 | 0.0
Other investments | 0.1 | 0.1
Investments in affiliated collateralized loan obligations | 6.4 | 10.8
Total | 36.5 | 34.3
Contingent consideration liability | 0.0 | 0.0
Level 2 | Fair value, measurements, recurring | Discretionary investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 0.0 | 0.0
Level 2 | Fair value, measurements, recurring | Seed capital |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 30.0 | 23.4
Level 2 | Fair value, measurements, recurring | Supplemental savings plan liability economic hedges |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 0.0 | 0.0
Level 3 | Fair value, measurements, recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash equivalents held in money market funds | 0.0 | 0.0
Other investments | 0.0 | 0.0
Investments in affiliated collateralized loan obligations | 0.0 | 0.0
Total | 0.0 | 0.0
Contingent consideration liability | 131.3 | 306.3
Level 3 | Fair value, measurements, recurring | Discretionary investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 0.0 | 0.0
Level 3 | Fair value, measurements, recurring | Seed capital |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | 0.0 | 0.0
Level 3 | Fair value, measurements, recurring | Supplemental savings plan liability economic hedges |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
T. Rowe Price investment products | $ 0.0 | $ 0.0

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