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NET INCOME PER SHARE - Narrative (Detail)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Stock options, shares outstanding (in shares) 1.4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 1.3us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Stock Compensation Plan    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Shares excluded from computation as their effect would be anti-dilutive 0.2us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockCompensationPlanMember