Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Dec. 05, 2015	Feb. 28, 2015	Feb. 24, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Difference between fair value and book value of notes receivable	$ 1	$ 2
Difference between fair value and book value of long-term debt	41	59
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Fair Value, Net	(4)	0
Derivative, Fair Value, Effect of One Percentage Point Increase in Interest Rate	7
Derivative, Fair Value, Effect of One Percentage Point Decrease in Interest Rate	4
Derivative, Notional Amount			$ 300
Derivative, Fixed Interest Rate			5.5075%
Fuel [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Fair Value, Net	$ (2)	$ (1)