Quarterly report pursuant to Section 13 or 15(d)

SEGMENT INFORMATION (Operating Revenue and Operating Income by Operating Segment) (Detail)

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SEGMENT INFORMATION (Operating Revenue and Operating Income by Operating Segment) (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Segment Reporting Information [Line Items]    
Operating revenue $ 584.5 $ 566.5
Operating income 151.9 149.0
U.S. Consumer Information Solutions [Member]
   
Segment Reporting Information [Line Items]    
Operating revenue 243.9 245.1
Operating income 94.8 91.9
International [Member]
   
Segment Reporting Information [Line Items]    
Operating revenue 143.9 123.7
Operating income 29.4 34.7
Workforce Solutions [Member]
   
Segment Reporting Information [Line Items]    
Operating revenue 119.7 123.7
Operating income 38.7 37.4
North America Personal Solutions [Member]
   
Segment Reporting Information [Line Items]    
Operating revenue 54.1 51.1
Operating income 15.3 14.5
North America Commercial Solutions [Member]
   
Segment Reporting Information [Line Items]    
Operating revenue 22.9 22.9
Operating income 4.4 4.9
General Corporate Expenses [Member]
   
Segment Reporting Information [Line Items]    
Operating income $ (30.7) $ (34.4)