Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.19.1
Significant Accounting Policies - Additional Information (Detail)
$ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2018
USD ($)
Mar. 31, 2019
USD ($)
Segment
Product
Mar. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Jan. 01, 2019
USD ($)
Subsidiary or Equity Method Investee [Line Items]          
Total operating lease liabilities [1]   $ 186.5      
Total operating lease right-of-use assets   172.5      
Credit card receivables   73.3   $ 52.7  
Bad-debt expense   0.6 $ 0.1    
Allowance for doubtful accounts   1.5   1.5  
Allowances for product returns   $ 4.7   $ 4.9  
Number of geographic regions | Segment   6      
Number of product categories | Product   5      
Other operating income   $ 27.3 16.2    
Loss on extinguishment of debt     13.1    
October 2017 Dutch Auction Tender Offer [Member]          
Subsidiary or Equity Method Investee [Line Items]          
Gain (loss) recognized in other expense   8.5 (11.3)    
Convertible Senior Notes Due 2019 [Member] | Repurchase of 2019 Convertible Notes [Member]          
Subsidiary or Equity Method Investee [Line Items]          
Loss on extinguishment of debt $ 13.1 13.1      
Repurchase of convertible notes $ 475.0 475.0      
China [Member]          
Subsidiary or Equity Method Investee [Line Items]          
Other operating income   21.3 $ 16.2    
Mexico [Member] | Other Operating Income [Member]          
Subsidiary or Equity Method Investee [Line Items]          
Insurance recoveries   $ 6.0      
Accounting Standards Update 2016-02 [Member]          
Subsidiary or Equity Method Investee [Line Items]          
Total operating lease liabilities         $ 189.1
Total operating lease right-of-use assets         $ 176.9
[1] Operating lease payments exclude $3.9 million of legally binding minimum lease payments for leases signed but not yet commenced.