Investments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 27, 2014	Feb. 28, 2013	Feb. 27, 2014	Feb. 28, 2013	Aug. 29, 2013
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	$ 1,981		$ 1,981		$ 2,283
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Money market funds not due at a single maturity date	1,137		1,137
Due in 1 year or less	292		292
Due in 1-2 years	268		268
Due in 2-4 years	266		266
Due after 4 years	17		17
Debt Securities, Fair Value	1,980		1,980
Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract]
Proceeds from the sale of available-for-sale securities	110	67	223	160
Money market funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	1,137		1,137		1,188
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	456		456		414
Government securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	141		141		168
Asset-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	123		123		97
Certificates of deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	100		100		349
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	23		23		61
Marketable equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	$ 1		$ 1		$ 6