Investments - Available-for-sale and Held-to-maturity Investments (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 25, 2018	Nov. 26, 2017	Sep. 02, 2018
Available-for-sale and Held-to-maturity [Line Items]
Available-for-sale, recorded basis	$ 887
Available-for-sale, cost basis, total	901
Held-to-maturity, cost basis	288
Total investments, recorded basis	1,175		$ 1,204
Proceeds from Sale of Available-for-sale Securities	0	$ 35
Short-term Investments
Available-for-sale and Held-to-maturity [Line Items]
Unrealized gains/(loss), net	(14)		(14)
Total investments, recorded basis	1,175		1,204
Total investments, cost basis, total	1,189		1,218
Short-term Investments | Government and Agency Securities
Available-for-sale and Held-to-maturity [Line Items]
Available-for-sale, recorded basis	887		898
Available-for-sale Securities [Member] | Short-term Investments | Government and Agency Securities
Available-for-sale and Held-to-maturity [Line Items]
Available-for-sale, recorded basis	887		898
Unrealized gains/(loss), net	(14)		(14)
Available-for-sale, cost basis, total	901		912
Held-to-maturity Securities [Member] | Short-term Investments | Certificates of deposit
Available-for-sale and Held-to-maturity [Line Items]
Held-to-maturity, recorded basis	288		306
Held-to-maturity, cost basis	$ 288		$ 306