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| **Compensation and Retirement Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| Schedule of Net Benefit Costs [Table Text Block]      |  Three Months Ended January 31, Pension Benefits Health and LifeInsurance Benefits(in millions)2017 2016 2017 2016Service cost for benefits earned during the period$2 $2 $1 $1Interest on obligation27 30 12 15Amortization of cumulative loss29 26 6 8Contractual termination benefits1 — — —Premiums on pension insurance4 4 — —Expected return on assets(40) (42) (6) (6)Net periodic benefit expense$23 $20 $13 $18 |

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| - References
No definition available.
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| - Definition
Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920
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