XML 42 R30.htm IDEA: XBRL DOCUMENT
v3.22.1

THE COMPANY AND BASIS OF PREPARATION (Details) - USD ($) $ in Billions | Mar. 31, 2022 | Dec. 31, 2021 | Dec. 29, 2021
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Assets under management | $ 1,551.8 | $ 1,687.8 |
OAK HILL ADVISORS, L.P |  |  |
Business Acquisition [Line Items] |  |  |
Voting interests acquired |  |  | 100.00%
Assets under management | $ 57.0 |  |
Co Investment Entities |  |  |
Business Acquisition [Line Items] |  |  |
Voting interests acquired |  |  | 100.00%

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
- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=trow_OAKHILLADVISORSLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=trow_CoInvestmentEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |