Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Effect of Cash Flow Hedging Relationships on Condensed Consolidated Statements of Income (Detail)

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Derivative Instruments and Hedging Activities - Effect of Cash Flow Hedging Relationships on Condensed Consolidated Statements of Income (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]        
Cost of sales $ 322.7 $ 243.4 $ 841.2 $ 728.2
Selling, general, and administrative expenses 529.7 500.1 1,559.5 1,412.5
Interest expense, net 35.2 31.6 89.0 104.0
Foreign Exchange Currency Contracts Relating To Inventory Hedges [Member] | Cost of sales [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) reclassified from accumulated other comprehensive loss to income 4.0 (0.3) 2.8 (0.2)
Amount of loss excluded from assessment of effectiveness recognized in income (0.8) (0.6) (2.6) (1.9)
Foreign Exchange Currency Contracts Relating To Inventory Hedges [Member] | Interest expense, net [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) reclassified from accumulated other comprehensive loss to income (0.2)   (0.3)  
Foreign Exchange Currency Contracts Relating To Intercompany Management Fee Hedges | Selling, General and Administrative Expenses [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) reclassified from accumulated other comprehensive loss to income $ (0.1) 0.1   0.9
Amount of loss excluded from assessment of effectiveness recognized in income   $ 0.1 $ 0.1 $ 0.2