XML 88 R69.htm IDEA: XBRL DOCUMENT
v3.20.4

OTHER DISCLOSURES. (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |  |
Expense recognized for defined contribution retirement plans |  | $ 117,000,000.0 | $ 104,600,000 | $ 105,600,000
Senior officers | Supplemental Savings Plan |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |  |
Deferral percentage of cash incentive compensation |  | 50.00% |  |
Supplemental Savings Plan, minimum deferral period |  | 2 years |  |
Supplemental Savings Plan, maximum deferral period |  | 15 years |  |
Amount of cash incentive compensation senior officers elected to defer |  | $ 105,800,000 | $ 107,500,000 | $ 118,900,000
Maximum amount of cash incentive compensation senior officers elected to defer |  | $ 2,000,000 |  |
Senior officers | Supplemental Savings Plan | Subsequent Event |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |  |
Supplemental Savings Plan, minimum deferral period | 5 years |  |  |
Maximum | Senior officers | Supplemental Savings Plan |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |  |
Deferral percentage of cash incentive compensation |  | 100.00% |  |

X
- Definition Deferred Compensation Arrangement with Individual, Maximum Cash Award Limit + References No definition available. + Details
Name: | trow_DeferredCompensationArrangementWithIndividualCashAwardsGrantedAmountDeferred
Namespace Prefix: | trow_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage Deferred + References No definition available. + Details
Name: | trow_DeferredCompensationArrangementwithIndividualCashAwardsGrantedPercentageDeferred
Namespace Prefix: | trow_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Deferred Compensation Arrangement with Individual, Initial Maximum Contractual Term + References No definition available. + Details
Name: | trow_DeferredCompensationArrangementwithIndividualInitialMaximumContractualTerm
Namespace Prefix: | trow_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred Compensation Arrangement with Individual, Initial Minimum Contractual Term + References No definition available. + Details
Name: | trow_DeferredCompensationArrangementwithIndividualInitialMinimumContractualTerm
Namespace Prefix: | trow_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of commitment made to pay deferred cash remuneration. + References No definition available. + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount
Namespace Prefix: | us-gaap_
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_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_ExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis=us-gaap_DeferredBonusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |