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Fair Value Measurements - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Sep. 09, 2017
Sep. 10, 2016
Sep. 09, 2017
Sep. 10, 2016
Feb. 25, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Difference between fair value and book value of notes receivable $ 0   $ 0   $ 0
Difference between fair value and book value of long-term debt 57,000,000   57,000,000    
Interest Rate Swap          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative, Fair Value, Effect of One Percentage Point Increase in Interest Rate 4,000,000        
Derivative, Fair Value, Effect of One Percentage Point Decrease in Interest Rate 2,000,000        
Cost of Sales | Fuel | Energy Related Derivative          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative, Gain on Derivative 0 $ 0 0 $ 0  
Interest Expense | Interest Rate Swap          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative, Gain (Loss) on Derivative, Net $ 1,000,000 $ 0 $ 2,000,000 $ 1,000,000