CONSOLIDATED T. ROWE PRICE INVESTMENT PRODUCTS - Statement of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	$ 3,452.0	$ 1,918.9	$ 1,522.7
Net cash provided by (used in) investing activities	(1,098.1)	(36.3)	(324.5)
Net cash used in financing activities	(2,988.8)	(1,486.3)	(832.7)
FX impact on cash	2.6	1.9	(2.5)
Net change in cash and cash equivalents during period	(632.3)	398.2	363.0
Cash and cash equivalents at beginning of year	2,256.5	1,858.3	1,495.3
Cash and cash equivalents at end of year	1,624.2	2,256.5	1,858.3
Consolidation eliminations
Condensed Cash Flow Statements, Captions [Line Items]
Net cash used in financing activities	51.9	79.5	174.4
Consolidated T. Rowe Price investment products
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents at beginning of year	104.8	76.5	70.1
Cash and cash equivalents at end of year	101.1	104.8	76.5
Consolidated T. Rowe Price investment products \| Reportable entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	25.5	(556.7)	(670.8)
Net cash provided by (used in) investing activities	(16.9)	(53.9)	(18.4)
Net cash used in financing activities	(14.9)	637.0	698.1
FX impact on cash	2.6	1.9	(2.5)
Net change in cash and cash equivalents during period	(3.7)	28.3	6.4
Cash and cash equivalents at beginning of year	104.8	76.5	70.1
Cash and cash equivalents at end of year	101.1	104.8	76.5
VOE \| Reportable entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	(135.3)	(155.4)	(7.2)
Net cash provided by (used in) investing activities	(11.9)	(23.4)	(7.1)
Net cash used in financing activities	147.4	176.0	5.7
FX impact on cash	0.0	0.0	0.0
Net change in cash and cash equivalents during period	0.2	(2.8)	(8.6)
Cash and cash equivalents at beginning of year	7.1	9.9	18.5
Cash and cash equivalents at end of year	7.3	7.1	9.9
VIE \| Reportable entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	160.8	(401.3)	(663.6)
Net cash provided by (used in) investing activities	(5.0)	(30.5)	(11.3)
Net cash used in financing activities	(162.3)	461.0	692.4
FX impact on cash	2.6	1.9	(2.5)
Net change in cash and cash equivalents during period	(3.9)	31.1	15.0
Cash and cash equivalents at beginning of year	97.7	66.6	51.6
Cash and cash equivalents at end of year	$ 93.8	$ 97.7	$ 66.6

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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