Quarterly report pursuant to Section 13 or 15(d)

GOODWILL AND INTANGIBLE ASSETS - Purchased Intangible Assets (Details)

v3.7.0.1
GOODWILL AND INTANGIBLE ASSETS - Purchased Intangible Assets (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross $ 2,057.5 $ 2,032.6
Accumulated Amortization (745.2) (708.8)
Net 1,312.3 1,323.8
Purchased data files    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 1,032.7 1,012.7
Accumulated Amortization (293.7) (276.0)
Net 739.0 736.7
Acquired software and technology    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 134.2 131.5
Accumulated Amortization (41.9) (36.1)
Net 92.3 95.4
Customer relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 723.3 712.7
Accumulated Amortization (286.5) (273.0)
Net 436.8 439.7
Reacquired rights    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 73.3 73.3
Accumulated Amortization (55.8) (52.5)
Net 17.5 20.8
Proprietary database    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 21.5 21.5
Accumulated Amortization (7.2) (6.7)
Net 14.3 14.8
Non-compete agreements    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 17.7 26.8
Accumulated Amortization (14.4) (22.2)
Net 3.3 4.6
Trade names and other intangible assets    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 54.8 54.1
Accumulated Amortization (45.7) (42.3)
Net $ 9.1 $ 11.8