XML 92 R80.htm IDEA: XBRL DOCUMENT v3.8.0.1
SUPPLEMENTARY QUARTERLY FINANCIAL DATA (Unaudited). (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Dec. 30, 2016
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Unusual or Infrequent Item, or Both [Line Items]                        
Net revenues   $ 1,286.1 $ 1,221.7 $ 1,171.6 $ 1,113.6 $ 1,091.2 $ 1,092.9 $ 1,044.7 $ 994.1 $ 4,793.0 $ 4,222.9 $ 4,200.6
Net income   386.6 404.2 390.0 400.4 366.8 362.7 211.2 313.3 1,581.2 [1] 1,254.0 [1] 1,223.0 [1]
Net income attributable to T. Rowe Price Group   $ 347.1 $ 390.9 $ 373.9 $ 385.9 $ 379.8 $ 327.8 $ 203.3 $ 304.1 $ 1,497.8 $ 1,215.0 $ 1,223.0
Basic earnings on common stock (in dollars per share)   $ 1.40 $ 1.59 $ 1.52 $ 1.56 $ 1.53 $ 1.30 $ 0.81 $ 1.21 $ 6.07 $ 4.85 $ 4.74
Diluted earnings per share (in dollars per share)   $ 1.37 $ 1.56 $ 1.50 1.54 1.50 $ 1.28 0.79 $ 1.18 $ 5.97 $ 4.75 $ 4.63
Income tax provision related to the tax law changes   $ 71.1               $ 71.1    
Dell appraisal rights matter [Member]                        
Unusual or Infrequent Item, or Both [Line Items]                        
Diluted earnings per share (in dollars per share)         $ 0.12 $ 0.24   $ 0.39        
Nonrecurring charge related to Dell appraisal rights matter               $ 166.2     $ 166.2  
Insurance proceeds $ 100.0       $ 50.0 $ 100.0            
[1] See note 15 for a supplementary consolidating cash flow schedule.