NEW ACCOUNTING PRONOUNCEMENTS ASU 2016-09 ADOPTION - Adjustments in Cash flow (Details) - USD ($) $ in Millions	9 Months Ended
Jul. 31, 2018	Jul. 31, 2017
Net Cash Provided by (Used in) Operating Activities	$ 320	$ 265
Net Cash Provided by (Used in) Financing Activities	$ (296)	1,466
Scenario, Previously Reported [Member]
Net Cash Provided by (Used in) Operating Activities		249
Net Cash Provided by (Used in) Financing Activities		1,482
Restatement Adjustment [Member]
Net Cash Provided by (Used in) Operating Activities		16
Net Cash Provided by (Used in) Financing Activities		$ (16)

Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-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 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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