XML 27 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2018
Apr. 23, 2018
Document and Entity Information [Abstract]    
Document Type 10-Q  
Document Period End Date Mar. 31, 2018  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2018  
Entity Registrant Name PRICE T ROWE GROUP INC  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding (shares)   242,137,493
Entity Central Index Key 0001113169  
Amendment Flag false