Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 10, 2016	Sep. 12, 2015	Sep. 10, 2016	Sep. 12, 2015	Feb. 27, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Difference between fair value and book value of notes receivable	$ 1		$ 1		$ 1
Difference between fair value and book value of long-term debt	54		54		$ 236
Interest Rate Swap [Member]
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	5
Derivative, Fair Value, Effect of One Percentage Point Decrease in Interest Rate	2
Cost of Sales [Member] | Fuel [Member] | Energy Related Derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Gain on Derivative			0
Derivative, Loss on Derivative	0	$ (1)		$ (2)
Interest Expense [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 0	$ 0	$ 1	$ 0