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Derivative Financial Instruments - Additional Information (Detail)
12 Months Ended
Dec. 31, 2016
USD ($)
Item
Jan. 02, 2016
USD ($)
Item
Jan. 03, 2015
USD ($)
Dec. 28, 2013
USD ($)
Derivative Gain/Loss        
Amount in AOCI related to hedge $ (301,202,000) $ (427,227,000) $ (467,038,000) $ (427,351,000)
Natural Gas [Member]        
Derivative Gain/Loss        
Percentage of fuel requirements hedged 40.00%      
Hedge instrument period span 12 months      
Number of contracts outstanding | Item 0 0    
Natural Gas [Member] | AOCI - Cash Flow Hedge [Member]        
Derivative Gain/Loss        
Amount in AOCI related to hedge $ 0 $ 0    
Diesel Fuel [Member]        
Derivative Gain/Loss        
Percentage of fuel requirements hedged 60.00%      
Hedge instrument period span 12 months      
Number of contracts outstanding | Item 0 0    
Diesel Fuel [Member] | AOCI - Cash Flow Hedge [Member]        
Derivative Gain/Loss        
Amount in AOCI related to hedge $ 0 $ 0