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CONSOLIDATED INVESTMENT PRODUCTS - Operating Results (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Condensed Income Statements, Captions [Line Items]
Operating expenses reflected in net operating income	$ (4,760.3)	$ (4,474.3)	$ (4,114.7)
Income before income taxes	2,819.6	2,490.3	1,948.2
Net income (loss) attributable to redeemable non-controlling interests	35.7	47.0	(108.3)
Consolidated T. Rowe Price investment products
Condensed Income Statements, Captions [Line Items]
Income before income taxes	120.5	153.5	(211.7)
Net income (loss) attributable to T. Rowe Price Group	84.8	106.5	(103.4)
Net income (loss) attributable to redeemable non-controlling interests	35.7	47.0	(108.3)
Consolidated T. Rowe Price investment products | Reportable entities
Condensed Income Statements, Captions [Line Items]
Operating expenses reflected in net operating income	(9.8)	(11.1)	(8.2)
Net gains (losses) reflected in non-operating income	130.3	164.6	(203.5)
Income before income taxes	120.5	153.5	(211.7)
VOE
Condensed Income Statements, Captions [Line Items]
Income before income taxes	39.3	48.7	(13.9)
Net income (loss) attributable to T. Rowe Price Group	31.4	40.9	(9.5)
Net income (loss) attributable to redeemable non-controlling interests	7.9	7.8	(4.4)
VOE | Reportable entities
Condensed Income Statements, Captions [Line Items]
Operating expenses reflected in net operating income	(2.4)	(3.7)	(0.5)
Net gains (losses) reflected in non-operating income	41.7	52.4	(13.4)
Income before income taxes	39.3	48.7	(13.9)
VIE
Condensed Income Statements, Captions [Line Items]
Income before income taxes	81.2	104.8	(197.8)
Net income (loss) attributable to T. Rowe Price Group	53.4	65.6	(93.9)
Net income (loss) attributable to redeemable non-controlling interests	27.8	39.2	(103.9)
VIE | Reportable entities
Condensed Income Statements, Captions [Line Items]
Operating expenses reflected in net operating income	(7.4)	(7.4)	(7.7)
Net gains (losses) reflected in non-operating income	88.6	112.2	(190.1)
Income before income taxes	$ 81.2	$ 104.8	$ (197.8)

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