Segment Reporting, Geographic Data (Details) - USD ($) $ in Millions	12 Months Ended
Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 117,351	$ 103,444	$ 76,392
Long-Lived Assets	14,335	15,068
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	2,675	1,833	0
Long-Lived Assets	175	181
Reportable Geographical Components [Member] \| United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	83,802	80,974	76,392
Long-Lived Assets	10,924	11,327
Reportable Geographical Components [Member] \| United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	14,081	9,235	0
Long-Lived Assets	2,611	2,835
Reportable Geographical Components [Member] \| Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	16,793	11,402	$ 0
Long-Lived Assets	$ 625	$ 725

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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