Business Segments Information (Financial Information By Geographic Area) (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Total	$ 2,931	$ 2,929
United States
Segment Reporting Information [Line Items]
Revenues	6,940	7,608	$ 7,929
Property, Plant and Equipment	1,772	1,746	1,789
China
Segment Reporting Information [Line Items]
Revenues	1,320	1,575	1,831
Reportable Geographical Components [Member]
Segment Reporting Information [Line Items]
Revenues	14,522	16,249	17,733
Property, Plant and Equipment, Total	2,931	2,929	3,062
Reportable Geographical Components [Member] \| United States And Canada [Member]
Segment Reporting Information [Line Items]
Revenues	7,505	8,370	8,753
Property, Plant and Equipment	1,780	1,756	1,803
Reportable Geographical Components [Member] \| Asia [Member]
Segment Reporting Information [Line Items]
Revenues	2,926	3,363	3,737
Property, Plant and Equipment	459	481	504
Reportable Geographical Components [Member] \| Europe [Member]
Segment Reporting Information [Line Items]
Revenues	2,300	2,381	2,896
Property, Plant and Equipment	435	426	441
Reportable Geographical Components [Member] \| Latin America [Member]
Segment Reporting Information [Line Items]
Revenues	834	981	1,194
Property, Plant and Equipment	203	216	266
Reportable Geographical Components [Member] \| Middle East/Africa [Member]
Segment Reporting Information [Line Items]
Revenues	957	1,154	1,153
Property, Plant and Equipment	$ 54	$ 50	$ 48

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 Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Section 50
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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
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-Section S99
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