Financial Instruments - Schedule of Pre-tax Effect of Derivative Instruments in Cash Flow Hedging Relationships (Detail) - USD ($) $ in Millions	3 Months Ended
Jan. 31, 2017	Jan. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Net revenue	$ 4,147	$ 4,472
Cost of revenue	4,177	4,646
Loss before taxes	(56)	(212)
Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains Recognized in Other Comprehensive Income on Derivatives (Effective Portion)	5	46
Net Unrealized Gains (Losses) on Cash Flow Hedges [Member] \| Reclassifications of Gains (Losses) into Earnings [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net revenue	23	20
Cost of revenue	1	1
Loss before taxes	24	21
Foreign Currency Contracts [Member] \| Net Revenue [Member] \| Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains Recognized in Other Comprehensive Income on Derivatives (Effective Portion)	$ 5	52
Foreign Currency Contracts [Member] \| Cost of Revenue [Member] \| Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains Recognized in Other Comprehensive Income on Derivatives (Effective Portion)		$ (6)

Total costs of sales and operating expenses for the period.

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)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 2: 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).

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