Business Segments Information (Financial Information By Geographic Area) (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Total	$ 3,585	$ 3,802
United States
Segment Reporting Information [Line Items]
Revenues	9,783	10,310	$ 10,000
Property, Plant and Equipment	1,968	2,022	1,952
China
Segment Reporting Information [Line Items]
Revenues	2,472	2,853	3,122
Reportable Geographical Components [Member]
Segment Reporting Information [Line Items]
Revenues	22,304	24,537	24,669
Property, Plant and Equipment, Total	3,585	3,802	3,605
Reportable Geographical Components [Member] \| United States And Canada [Member]
Segment Reporting Information [Line Items]
Revenues	10,673	11,262	10,964
Property, Plant and Equipment	1,979	2,036	1,969
Reportable Geographical Components [Member] \| Asia [Member]
Segment Reporting Information [Line Items]
Revenues	4,936	5,483	5,888
Property, Plant and Equipment	564	602	518
Reportable Geographical Components [Member] \| Europe [Member]
Segment Reporting Information [Line Items]
Revenues	4,024	4,815	4,841
Property, Plant and Equipment	733	803	772
Reportable Geographical Components [Member] \| Latin America [Member]
Segment Reporting Information [Line Items]
Revenues	1,241	1,508	1,555
Property, Plant and Equipment	254	306	308
Reportable Geographical Components [Member] \| Middle East/Africa [Member]
Segment Reporting Information [Line Items]
Revenues	1,430	1,469	1,421
Property, Plant and Equipment	$ 55	$ 55	$ 38

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)

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 13

-Subparagraph a

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

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