UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net income	$ 1,593.7	$ 1,655.0
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization of property and equipment	144.0	131.7
Stock-based compensation expense	164.5	136.1
Net gains recognized on investments	(75.3)	(137.3)
Net investments in T. Rowe Price investment products used to economically hedge supplemental savings plan liability	(19.1)	(20.5)
Net change in securities held by consolidated T. Rowe Price investment products	(350.8)	(688.1)
Other changes in assets and liabilities	459.9	423.8
Net cash provided by operating activities	1,916.9	1,500.7
Cash flows from investing activities
Purchases of T. Rowe Price investment products	(240.3)	(35.0)
Dispositions of T. Rowe Price investment products	381.9	112.0
Net cash of T. Rowe Price investment products on deconsolidation	(49.1)	(8.3)
Additions to property and equipment	(155.4)	(148.9)
Other investing activity	9.8	3.5
Net cash used in investing activities	(53.1)	(76.7)
Cash flows from financing activities
Repurchases of common stock	(1,158.5)	(576.0)
Common share issuances under stock-based compensation plans	76.2	116.3
Dividends paid to common stockholders of T. Rowe Price Group	(635.7)	(550.4)
Net subscriptions received from redeemable non-controlling interest holders	298.7	387.1
Net cash used in financing activities	(1,419.3)	(623.0)
Effect of exchange rate changes on cash and cash equivalents of consolidated T. Rowe Price investment products	3.4	(2.2)
Net change in cash and cash equivalents during period	447.9	798.8
Cash and cash equivalents at beginning of period	1,858.3	1,495.3
Cash and cash equivalents at ending of period	$ 2,306.2	$ 2,294.1