XML 80 R56.htm IDEA: XBRL DOCUMENT v3.22.0.1

INFORMATION ABOUT RECEIVABLES, REVENUES, AND SERVICES - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 29, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Period end assets under management	$ 1,640,900.0		$ 1,470,500.0
OHA Acquisition | Fee-basis assets
Business Acquisition [Line Items]
Period end assets under management		$ 46,900.0

X

- Definition

The carrying amount of assets an investment adviser manages on behalf of investors.

+ References

No definition available.

+ Details

Name:	us-gaap_AssetsUnderManagementCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=trow_OHAAcquisitionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=trow_FeeBasisAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: