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INVESTMENTS - Variable Interest Entities Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Variable interest entity, not primary beneficiary
Variable Interest Entity [Line Items]
Unfunded capital commitments	$ 110.4	$ 94.2

X

- Definition

Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Unfunded Capital Commitments, Amount

+ References

No definition available.

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: