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Debt (6.750% Senior Notes due in 2020) - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Apr. 05, 2017
Apr. 01, 2017
Mar. 22, 2017
Apr. 01, 2017
Apr. 02, 2016
Debt Instrument [Line Items]          
Aggregate principal amount of redemption       $ 203.3 $ 1.1
Premium costs paid on extinguishment of debt       7.2  
Accrued interest       22.2 $ 19.2
Proceeds from senior notes recorded to restricted cash       $ 750.0  
6.750% Senior Notes Due in 2020 [Member]          
Debt Instrument [Line Items]          
Aggregate principal amount of redemption     $ 202.3    
Premium costs paid on extinguishment of debt     7.1    
Accrued interest     3.1    
Write-off of financing fees and discount     2.9    
Other costs     $ 0.1    
6.750% Senior Notes Due in 2020 [Member] | Subsequent Event [Member]          
Debt Instrument [Line Items]          
Premium costs paid on extinguishment of debt $ 14.3        
Accrued interest 7.4        
Aggregate principal amount of debt to be redeemed $ 422.7        
5.500% Senior Notes Due in 2025 [Member]          
Debt Instrument [Line Items]          
Proceeds from senior notes recorded to restricted cash   $ 444.4