Financial Instruments - Schedule of Gross Notional and Fair Value of Derivative Financial Instruments in the Consolidated Condensed Balance Sheets (Details) - USD ($) $ in Millions	Jul. 31, 2016	Oct. 31, 2015
Derivatives, Fair Value
Outstanding Gross Notional	$ 18,237	$ 23,162
Gross Amount Recognized	351	258
Derivative liabilities	160	304
Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	175	210
Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	176	48
Other Accrued Liabilities
Derivatives, Fair Value
Derivative liabilities	155	202
Other Non-Current Liabilities
Derivatives, Fair Value
Derivative liabilities	5	102
Derivatives designated as hedging instruments \| Fair value hedges \| Interest rate contracts
Derivatives, Fair Value
Outstanding Gross Notional	2,000	3,175
Derivatives designated as hedging instruments \| Fair value hedges \| Interest rate contracts \| Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	0	1
Derivatives designated as hedging instruments \| Fair value hedges \| Interest rate contracts \| Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	76	37
Derivatives designated as hedging instruments \| Fair value hedges \| Interest rate contracts \| Other Accrued Liabilities
Derivatives, Fair Value
Derivative liabilities	0	0
Derivatives designated as hedging instruments \| Fair value hedges \| Interest rate contracts \| Other Non-Current Liabilities
Derivatives, Fair Value
Derivative liabilities	0	0
Derivatives designated as hedging instruments \| Cash flow hedges
Derivatives, Fair Value
Outstanding Gross Notional	14,137	14,034
Derivatives designated as hedging instruments \| Cash flow hedges \| Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	147	172
Derivatives designated as hedging instruments \| Cash flow hedges \| Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	176	47
Derivatives designated as hedging instruments \| Cash flow hedges \| Other Accrued Liabilities
Derivatives, Fair Value
Derivative liabilities	112	165
Derivatives designated as hedging instruments \| Cash flow hedges \| Other Non-Current Liabilities
Derivatives, Fair Value
Derivative liabilities	5	79
Derivatives designated as hedging instruments \| Cash flow hedges \| Foreign currency contracts
Derivatives, Fair Value
Outstanding Gross Notional	12,137	10,859
Derivatives designated as hedging instruments \| Cash flow hedges \| Foreign currency contracts \| Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	147	171
Derivatives designated as hedging instruments \| Cash flow hedges \| Foreign currency contracts \| Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	100	10
Derivatives designated as hedging instruments \| Cash flow hedges \| Foreign currency contracts \| Other Accrued Liabilities
Derivatives, Fair Value
Derivative liabilities	112	165
Derivatives designated as hedging instruments \| Cash flow hedges \| Foreign currency contracts \| Other Non-Current Liabilities
Derivatives, Fair Value
Derivative liabilities	5	79
Derivatives not designated as hedging instruments \| Cash flow hedges
Derivatives, Fair Value
Outstanding Gross Notional	4,100	9,128
Derivatives not designated as hedging instruments \| Cash flow hedges \| Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	28	38
Derivatives not designated as hedging instruments \| Cash flow hedges \| Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	0	1
Derivatives not designated as hedging instruments \| Cash flow hedges \| Other Accrued Liabilities
Derivatives, Fair Value
Derivative liabilities	43	37
Derivatives not designated as hedging instruments \| Cash flow hedges \| Other Non-Current Liabilities
Derivatives, Fair Value
Derivative liabilities	0	23
Derivatives not designated as hedging instruments \| Cash flow hedges \| Foreign currency contracts
Derivatives, Fair Value
Outstanding Gross Notional	3,956	8,955
Derivatives not designated as hedging instruments \| Cash flow hedges \| Foreign currency contracts \| Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	23	33
Derivatives not designated as hedging instruments \| Cash flow hedges \| Foreign currency contracts \| Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	0	1
Derivatives not designated as hedging instruments \| Cash flow hedges \| Foreign currency contracts \| Other Accrued Liabilities
Derivatives, Fair Value
Derivative liabilities	43	37
Derivatives not designated as hedging instruments \| Cash flow hedges \| Foreign currency contracts \| Other Non-Current Liabilities
Derivatives, Fair Value
Derivative liabilities	0	23
Derivatives not designated as hedging instruments \| Cash flow hedges \| Other derivatives
Derivatives, Fair Value
Outstanding Gross Notional	144	173
Derivative liabilities	0	0
Derivatives not designated as hedging instruments \| Cash flow hedges \| Other derivatives \| Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	5	5
Derivatives not designated as hedging instruments \| Cash flow hedges \| Other derivatives \| Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	0	0
Derivatives not designated as hedging instruments \| Cash flow hedges \| Other derivatives \| Other Accrued Liabilities
Derivatives, Fair Value
Derivative liabilities	$ 0	$ 0

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=51814546&loc=SL51823488-111719

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=51814546&loc=SL51823488-111719

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313

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