XML 43 R30.htm IDEA: XBRL DOCUMENT v3.20.2
INVESTMENTS. (Investments) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]          
U.S. Treasury note $ 1.0   $ 1.0   $ 1.0
Total 2,900.0   2,900.0   2,939.8
Net unrealized gains (losses) on T. Rowe Price investments product recognized in nonoperating income 125.5 $ 28.7 21.9 $ 79.3  
Gains recognized upon deconsolidation 415.1 124.5 (85.2) 327.3  
Reclassification out of accumulated other comprehensive income | Currency translation adjustments          
Schedule of Equity Method Investments [Line Items]          
Gains recognized upon deconsolidation 0.0 0.1 0.1 0.2  
Assets          
Schedule of Equity Method Investments [Line Items]          
Net increase (decrease) in assets, liabilities, and redeemable noncontrolling interest (100.0) (68.4) (146.2) (56.1)  
Liability          
Schedule of Equity Method Investments [Line Items]          
Net increase (decrease) in assets, liabilities, and redeemable noncontrolling interest (1.2) (0.3) (3.6) (1.2)  
Redeemable noncontrolling interest          
Schedule of Equity Method Investments [Line Items]          
Net increase (decrease) in assets, liabilities, and redeemable noncontrolling interest (42.8) $ (29.5) (62.9) $ (9.1)  
T. Rowe Price investment products - discretionary investments          
Schedule of Equity Method Investments [Line Items]          
Investments held at fair value 992.4   992.4   1,221.8
Equity method investments 809.6   809.6   610.0
T. Rowe Price investment products - seed capital          
Schedule of Equity Method Investments [Line Items]          
Investments held at fair value 132.2   132.2   181.1
Equity method investments 145.3   145.3   95.6
T. Rowe Price investment products - supplemental savings plan liability economic hedges          
Schedule of Equity Method Investments [Line Items]          
Investments held at fair value 529.2   529.2   561.1
Equity method investments 35.3   35.3   0.0
Investment partnerships and other investments          
Schedule of Equity Method Investments [Line Items]          
Investments held at fair value 93.4   93.4   99.7
26% interest in UTI Asset Management Company Limited (India)          
Schedule of Equity Method Investments [Line Items]          
Equity method investments $ 155.9   $ 155.9   $ 164.5
Equity method investment (ownership percentage) 26.00%   26.00%   26.00%
Investment partnerships and other investments          
Schedule of Equity Method Investments [Line Items]          
Equity method investments $ 5.7   $ 5.7   $ 5.0