Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Reconciliation of Weighted-Average Outstanding Shares Used in Calculations of Basic and Diluted EPS) (Detail)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Reconciliation of Weighted-Average Outstanding Shares Used in Calculations of Basic and Diluted EPS) (Detail)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]      
Weighted-average shares outstanding (basic) 121.2us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 121.2us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 119.9us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of dilutive securities:      
Stock options and restricted stock units 2.3us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 2.5us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 2.6us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Weighted-average shares outstanding (diluted) 123.5us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 123.7us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 122.5us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding