Annual report pursuant to Section 13 and 15(d)

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

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Fair Value Measurements - Derivative Assets and Liabilities Measured at Fair Value (Detail) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value derivative assets $ 3.2 $ 3.3
Fair value derivative liabilities 3.0 1.7
Foreign exchange currency contracts [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value derivative assets 3.2 3.3
Fair value derivative liabilities 3.0 1.7
Significant Other Observable Inputs (Level 2) [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value measurements, assets total 3.2 3.3
Fair value measurements, liabilities total 3.0 1.7
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 0.1 0.5
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 1.9 0.7
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 3.1 2.8
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 $ 1.1 $ 1.0