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Debt - Additional Information (Detail) - USD ($)
Sep. 28, 2015
Sep. 06, 2015
Subsequent Event [Member]    
Debt Instrument [Line Items]    
Principal amortization payments for remainder of fiscal year previously not made in future quarters $ 26,900,000  
Debt instrument, stated percentage 5.216%  
Minimum [Member] | Subsequent Event [Member]    
Debt Instrument [Line Items]    
Leverage ratio of total debt to earnings before interest, tax, depreciation amortization 4.5  
2012 Notes [Member]    
Debt Instrument [Line Items]    
Variable fund notes   $ 100,000,000
2012 Notes [Member] | Subsequent Event [Member]    
Debt Instrument [Line Items]    
Debt instrument face amount $ 1,500,000,000  
Debt instrument prepay and retire percentage 35.00%  
Prepayment of fixed rate notes $ 551,300,000  
Variable fund notes $ 125,000,000