Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Useful Life of Other Purchased Intangible Assets) (Detail)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Useful Life of Other Purchased Intangible Assets) (Detail)
 12 Months Ended
Dec. 31, 2015
Purchased data files | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 15 years
Purchased data files | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 2 years
Acquired software and technology | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 10 years
Acquired software and technology | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 1 year
Non-compete agreements | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 5 years
Non-compete agreements | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 1 year
Proprietary database | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 10 years
Proprietary database | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 6 years
Customer relationships | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 25 years
Customer relationships | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 2 years
Trade Names | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 15 years
Trade Names | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 3 years