CONSOLIDATED SPONSORED INVESTMENT PRODUCTS - Operating Results (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Condensed Income Statements, Captions [Line Items]
Operating expenses reflected in net operating income	$ (1,053.4)	$ (985.6)
Income before income taxes	619.6	678.9
Net income (loss) attributable to redeemable non-controlling interests	20.2	(53.5)
Consolidated T. Rowe Price investment products
Condensed Income Statements, Captions [Line Items]
Income before income taxes	41.8	(103.9)
Net income (loss) attributable to T. Rowe Price Group	21.6	(50.4)
Net income (loss) attributable to redeemable non-controlling interests	20.2	(53.5)
Consolidated T. Rowe Price investment products \| Reportable entities
Condensed Income Statements, Captions [Line Items]
Operating expenses reflected in net operating income	(4.0)	(2.5)
Net investment income (loss) reflected in non-operating income	45.8	(101.4)
Income before income taxes	41.8	(103.9)
Voting interest entities
Condensed Income Statements, Captions [Line Items]
Income before income taxes	5.2	(6.8)
Net income (loss) attributable to T. Rowe Price Group	3.7	(4.7)
Net income (loss) attributable to redeemable non-controlling interests	1.5	(2.1)
Voting interest entities \| Reportable entities
Condensed Income Statements, Captions [Line Items]
Operating expenses reflected in net operating income	(1.7)	(0.2)
Net investment income (loss) reflected in non-operating income	6.9	(6.6)
Income before income taxes	5.2	(6.8)
Variable interest entities
Condensed Income Statements, Captions [Line Items]
Income before income taxes	36.6	(97.1)
Net income (loss) attributable to T. Rowe Price Group	17.9	(45.7)
Net income (loss) attributable to redeemable non-controlling interests	18.7	(51.4)
Variable interest entities \| Reportable entities
Condensed Income Statements, Captions [Line Items]
Operating expenses reflected in net operating income	(2.3)	(2.3)
Net investment income (loss) reflected in non-operating income	38.9	(94.8)
Income before income taxes	$ 36.6	$ (97.1)

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Income (Loss) From Continuing Operations Before Income Taxes, Attributable To Parent

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities.

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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