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STOCKHOLDERS' EQUITY (Details) $ in Millions	Mar. 31, 2022 USD ($)
Stockholders' Equity Note [Abstract]
Unsettled common stock repurchases liability	$ 0.0

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- Definition

Unsettled Common Stock Repurchases Liabilities

+ References

No definition available.

+ Details

Name:	trow_UnsettledCommonStockRepurchasesLiabilities
Namespace Prefix:	trow_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration