Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Derivative Assets and Liabilities Measured at Fair Value (Detail)

v3.10.0.1
Fair Value Measurements - Derivative Assets and Liabilities Measured at Fair Value (Detail) - USD ($)
$ in Millions
Sep. 30, 2018
Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value derivative assets $ 1.6 $ 5.8
Fair value derivative liabilities 3.9 6.6
Foreign exchange currency contracts [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value derivative assets 1.6 5.8
Fair value derivative liabilities 3.9 6.6
Significant Other Observable Inputs (Level 2) [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value measurements, assets total 1.6 5.8
Fair value measurements, liabilities total 3.9 6.6
Significant Other Observable Inputs (Level 2) [Member] | Derivatives designated as hedging instruments [Member] | Foreign exchange currency contracts relating to inventory and intercompany management fee hedges [Member] | Prepaid expenses and other current assets [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value derivative assets 0.7 2.9
Significant Other Observable Inputs (Level 2) [Member] | Derivatives designated as hedging instruments [Member] | Foreign exchange currency contracts relating to inventory and intercompany management fee hedges [Member] | Other current liabilities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value derivative liabilities 2.0 4.0
Significant Other Observable Inputs (Level 2) [Member] | Derivatives not designated as hedging instruments [Member] | Foreign exchange currency contracts [Member] | Prepaid expenses and other current assets [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value derivative assets 0.9 2.9
Significant Other Observable Inputs (Level 2) [Member] | Derivatives not designated as hedging instruments [Member] | Foreign exchange currency contracts [Member] | Other current liabilities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value derivative liabilities $ 1.9 $ 2.6