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CONSOLIDATED T. ROWE PRICE INVESTMENT PRODUCTS. (Operating Results) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Condensed Income Statements, Captions [Line Items] |  |
Operating expenses reflected in net operating income | $ (933.6) | $ (755.4)
Income before income taxes | 995.3 | 206.9
Net income (loss) attributable to redeemable non-controlling interests | 15.4 | (176.5)
Consolidated T. Rowe Price investment products |  |
Condensed Income Statements, Captions [Line Items] |  |
Income before income taxes | 33.7 | (334.0)
Net income (loss) attributable to T. Rowe Price Group | 18.3 | (157.5)
Net income (loss) attributable to redeemable non-controlling interests | 15.4 | (176.5)
Voting interest entities |  |
Condensed Income Statements, Captions [Line Items] |  |
Income before income taxes | 5.9 | (35.4)
Net income (loss) attributable to T. Rowe Price Group | 4.0 | (22.6)
Net income (loss) attributable to redeemable non-controlling interests | 1.9 | (12.8)
Variable interest entities |  |
Condensed Income Statements, Captions [Line Items] |  |
Income before income taxes | 27.8 | (298.6)
Net income (loss) attributable to T. Rowe Price Group | 14.3 | (134.9)
Net income (loss) attributable to redeemable non-controlling interests | 13.5 | (163.7)
Reportable entities | Consolidated T. Rowe Price investment products |  |
Condensed Income Statements, Captions [Line Items] |  |
Operating expenses reflected in net operating income | (3.5) | (3.7)
Net investment income (loss) reflected in non-operating income (loss) | 37.2 | (330.3)
Income before income taxes | 33.7 | (334.0)
Reportable entities | Voting interest entities |  |
Condensed Income Statements, Captions [Line Items] |  |
Operating expenses reflected in net operating income | (0.2) | (0.2)
Net investment income (loss) reflected in non-operating income (loss) | 6.1 | (35.2)
Income before income taxes | 5.9 | (35.4)
Reportable entities | Variable interest entities |  |
Condensed Income Statements, Captions [Line Items] |  |
Operating expenses reflected in net operating income | (3.3) | (3.5)
Net investment income (loss) reflected in non-operating income (loss) | 31.1 | (295.1)
Income before income taxes | 27.8 | (298.6)
Consolidation eliminations |  |
Condensed Income Statements, Captions [Line Items] |  |
Operating expenses reflected in net operating income | $ (1.3) | $ (2.5)

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