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Cover - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2023
Feb. 12, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Entity File Number 000-32191    
Entity Incorporation, State or Country Code MD    
Entity Tax Identification Number 52-2264646    
Entity Address, Address Line One 100 East Pratt Street    
Entity Address, City or Town Baltimore    
Entity Address, State or Province MD    
Entity Address, Postal Zip Code 21202    
City Area Code 410    
Local Phone Number 345-2000    
Title of 12(b) Security Common stock, $.20 par value per share    
Trading Symbol TROW    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 24.6
Entity Common Stock, Shares Outstanding ( in shares)   223,656,595  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE: Certain portions of the registrant's Definitive Proxy Statement for the 2024 Annual Meeting of Stockholders, to be filed pursuant to Regulation 14A of the general rules and regulations under the Act, are incorporated by reference into Part III of this report.
    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2023    
Entity Registrant Name PRICE T ROWE GROUP INC    
Entity Central Index Key 0001113169    
Amendment Flag false