Quarterly report pursuant to Section 13 or 15(d)

GOODWILL AND INTANGIBLE ASSETS (Purchased Intangible Assets) (Detail)

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GOODWILL AND INTANGIBLE ASSETS (Purchased Intangible Assets) (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross $ 1,501.3 $ 1,397.2
Accumulated Amortization (509.5) (424.0)
Net 991.8 973.2
Purchased Data Files [Member]
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 699.1 709.5
Accumulated Amortization (213.7) (187.4)
Net 485.4 522.1
Acquired Software and Technology [Member]
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 59.8 38.4
Accumulated Amortization (28.8) (20.2)
Net 31.0 18.2
Customer Relationships [Member]
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 577.3 506.7
Accumulated Amortization (196.7) (166.5)
Net 380.6 340.2
Reacquired Rights [Member]
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 73.3 73.3
Accumulated Amortization (23.0) (13.1)
Net 50.3 60.2
Proprietary Database [Member]
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 7.4 7.4
Accumulated Amortization (5.3) (5.0)
Net 2.1 2.4
Non-compete Agreements [Member]
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 31.3 20.2
Accumulated Amortization (13.4) (7.8)
Net 17.9 12.4
Trade Names and Other Intangible Assets [Member]
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 53.1 41.7
Accumulated Amortization (28.6) (24.0)
Net $ 24.5 $ 17.7