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
Jun. 30, 2017
Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross $ 2,019.4 $ 2,032.6
Accumulated Amortization (746.7) (708.8)
Net 1,272.7 1,323.8
Purchased data files    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 1,018.3 1,012.7
Accumulated Amortization (296.2) (276.0)
Net 722.1 736.7
Acquired software and technology    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 135.1 131.5
Accumulated Amortization (49.9) (36.1)
Net 85.2 95.4
Customer relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 725.7 712.7
Accumulated Amortization (299.7) (273.0)
Net 426.0 439.7
Reacquired rights    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 73.3 73.3
Accumulated Amortization (59.1) (52.5)
Net 14.2 20.8
Proprietary database    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 21.5 21.5
Accumulated Amortization (7.6) (6.7)
Net 13.9 14.8
Non-compete agreements    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 17.7 26.8
Accumulated Amortization (15.0) (22.2)
Net 2.7 4.6
Trade names and other intangible assets    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 27.8 54.1
Accumulated Amortization (19.2) (42.3)
Net $ 8.6 $ 11.8