Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Gains (Losses) Relating to Derivative Instruments Recorded in Other Comprehensive Income (Loss) (Detail)

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Derivative Instruments and Hedging Activities - Gains (Losses) Relating to Derivative Instruments Recorded in Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Foreign exchange currency contracts relating to inventory and intercompany management fee hedges [Member] | Derivatives designated as hedging instruments [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) $ 2.4 $ (1.8) $ 9.6 $ (2.0)