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Fair Value Measurements - Narrative (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impairment of trademark   $ 9,200      
Non-cash asset impairment charge     $ 18,203 $ 56,324 $ 0
Estimated fair value of long-term debt, including the current portion $ 3,010,000   2,490,000 3,010,000  
Long-term debt, gross 3,150,000   $ 2,900,000 3,150,000  
Selling, general and administrative expenses          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Non-cash asset impairment charge       21,200  
Cost of sales          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Non-cash asset impairment charge $ 20,600     $ 20,600