Annual report pursuant to Section 13 and 15(d)

DISCONTINUED OPERATIONS (Additional Information) (Detail)

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DISCONTINUED OPERATIONS (Additional Information) (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Cashreceivedfromdivestitures                 $ 47.5 $ 2.5 $ 2.5
Revenue from discontinued operations                 9.3 87.5  
Pretax income from discontinued operations                 0.5 8.9  
Gain on divestitures                 18.4    
Income from discontinued operations, net of tax 0 (0.6) 0 19.0 1.8 1.0 2.3 0.4 18.4 5.5 2.9
Discontinued Operation Income Loss From Discontinued Operation Income Tax Benefit Current                 14.3    
Income tax benifits from disposals                 18.1    
U S Consumer Information Solutions [Member]
                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Cashreceivedfromdivestitures                 47.5    
Talent Management Services [Member]
                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Escrow Receivable From Sale Of Business                 $ 3.5