Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2016	Nov. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 30,281
Other comprehensive income (loss) before reclassification adjustments	(820)	$ (451)
Amounts reclassified from accumulated OCI		1
Tax benefit	2	6
Net other comprehensive income (loss)	(865)	(445)
Ending Balance	29,692
Pension/Post-retirement Obligations [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(212)	29
Other comprehensive income (loss) before reclassification adjustments	(11)	3
Amounts reclassified from accumulated OCI		0
Tax benefit	2	0
Net other comprehensive income (loss)	(9)	3
Ending Balance	(221)	32
Unrecognized Gain (Loss) on Available-for-Sale Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	2	259
Other comprehensive income (loss) before reclassification adjustments	(1)	(5)
Amounts reclassified from accumulated OCI		0
Tax benefit	0	6
Net other comprehensive income (loss)	(1)	1
Ending Balance	1	260
Unrealized Gain (Loss) on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(37)	(40)
Other comprehensive income (loss) before reclassification adjustments	1	0
Amounts reclassified from accumulated OCI		1
Tax benefit	0	0
Net other comprehensive income (loss)	1	1
Ending Balance	(36)	(39)
Share of OCI of Equity Method Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1)	0
Other comprehensive income (loss) before reclassification adjustments	(1)	0
Amounts reclassified from accumulated OCI		0
Tax benefit	0	0
Net other comprehensive income (loss)	1	0
Ending Balance	(2)	0
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,744)	(462)
Other comprehensive income (loss) before reclassification adjustments	(808)	(449)
Amounts reclassified from accumulated OCI		0
Tax benefit	0	0
Net other comprehensive income (loss)	(808)	(449)
Ending Balance	(3,552)	(911)
AOCI Total [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,992)	(214)
Net other comprehensive income (loss)	(818)	(444)
Ending Balance	$ (3,810)	$ (658)