Restructuring and Related Cost, Expected Number of Positions Eliminated1

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- Definition

Amount of costs incurred to date for the specified restructuring cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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- Definition

Amount of expected cost remaining for the specified restructuring cost.

+ References

No definition available.

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- Definition

The expected number of positions to be eliminated as a result of restructuring activities.

+ References

No definition available.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

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Restructuring - Narrative (Details)	3 Months Ended		9 Months Ended
Restructuring - Narrative (Details)	Jul. 31, 2017 USD ($) employee	Jul. 31, 2016 USD ($)	Jul. 31, 2017 USD ($) employee position	Jul. 31, 2016 USD ($)	Oct. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 165,000,000	$ 93,000,000	$ 399,000,000	$ 346,000,000
Current restructuring liability reported in Accrued restructuring	229,000,000		229,000,000		$ 301,000,000
Non-current restructuring liability reported in Other liabilities	$ 61,000,000		$ 61,000,000		$ 52,000,000
The 2015 Plan
Restructuring Cost and Reserve [Line Items]
Number of employees expected to exit the Company \| employee			13,400
Number of remaining employees expected to exit the Company \| employee	3,100		3,100
Estimated aggregate pre-tax charges to be incurred through fiscal 2018	$ 1,200,000,000		$ 1,200,000,000
The 2015 Plan \| Workforce reductions
Restructuring Cost and Reserve [Line Items]
Restructuring charges			350,000,000
Estimated aggregate pre-tax charges to be incurred through fiscal 2018	1,000,000,000		1,000,000,000
Total aggregate charges in connection with the 2012 Plan	794,000,000		794,000,000
The 2015 Plan \| Real estate consolidation and asset impairments
Restructuring Cost and Reserve [Line Items]
Estimated aggregate pre-tax charges to be incurred through fiscal 2018	200,000,000		200,000,000
The 2015 Plan \| Infrastructure and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges			41,000,000
Total aggregate charges in connection with the 2012 Plan	99,000,000		$ 99,000,000
The 2012 Plan
Restructuring Cost and Reserve [Line Items]
Number of employees expected to exit the Company \| position			12,700
Total aggregate charges in connection with the 2012 Plan	1,400,000,000		$ 1,400,000,000
The 2012 Plan \| Workforce reductions
Restructuring Cost and Reserve [Line Items]
Total aggregate charges in connection with the 2012 Plan	1,200,000,000		1,200,000,000
The 2012 Plan \| Infrastructure and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges			0
Total aggregate charges in connection with the 2012 Plan	222,000,000		222,000,000
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 275,000,000	$ 159,000,000	$ 494,000,000