Derivative Instruments - Notional Amounts and Fair Values (Details) shares in Millions, $ in Millions		6 Months Ended
		Feb. 28, 2019 USD ($) shares	Aug. 30, 2018 USD ($) shares
Derivative, Fair Value, Net [Abstract]
Fair Value of Current Assets	[1]	$ 6	$ 14
Fair Value of Current Liabilities	[2]	$ (426)	(190)
Designated hedging instruments
Derivative, Fair Value, Net [Abstract]
General maturity of currency forward contracts (in months)		12 months
Designated hedging instruments | Cash flow hedges | Currency forward
Notional Disclosures [Abstract]
Gross Notional Amount, Currency forwards		$ 235	538
Derivative, Fair Value, Net [Abstract]
Fair Value of Current Assets	[1]	0	0
Fair Value of Current Liabilities	[2]	(3)	(13)
Not designated hedging instruments
Derivative, Fair Value, Net [Abstract]
Fair Value of Current Assets	[1]	6	14
Fair Value of Current Liabilities	[2]	$ (423)	(177)
General maturity of currency forward contracts (in months)		3 months
Not designated hedging instruments | Currency forward
Notional Disclosures [Abstract]
Gross Notional Amount, Currency forwards		$ 2,205	1,919
Derivative, Fair Value, Net [Abstract]
Fair Value of Current Assets	[1]	6	14
Fair Value of Current Liabilities	[2]	$ (3)	$ (10)
Not designated hedging instruments | Convertible notes settlement obligation
Notional Disclosures [Abstract]
Gross Notional Amount, Convertible notes settlement obligation (in shares) | shares		35	3
Derivative, Fair Value, Net [Abstract]
Fair Value of Current Assets	[1]	$ 0	$ 0
Fair Value of Current Liabilities	[2],[3]	$ (420)	$ (167)

[1] Included in receivables – other.

[2] Included in accounts payable and accrued expenses – other for forward contracts and in current debt for convertible notes settlement obligations.

[3] Notional amounts of convertible notes settlement obligations as of February 28, 2019 and August 30, 2018 were 35 million and 3 million shares of our common stock, respectively.