| **Summary of Significant Accounting Policies (Tables)**   | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
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| **Accounting Policies [Abstract]**                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Schedule of Product Warranty Liability [Table Text Block] |  Three Months Ended January 31,(in millions)2017 2016Balance at beginning of period$818 $994Costs accrued and revenues deferred(B)45 41Currency translation adjustment— (1)Adjustments to pre-existing warranties(A)(17) 5Payments and revenues recognized(B)(95) (117)Balance at end of period751 922Less: Current portion371 421Noncurrent accrued product warranty and deferred warranty revenue$380 $501 |

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| - References
No definition available.
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| - Definition
Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249
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