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STOCKHOLDER'S EQUITY - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2016 | Jul. 31, 2015 | Jul. 31, 2016 | Jul. 31, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | $ (437) | $ (357) | $ (479) | $ (336)
OCI, before Reclassifications, before Tax, Attributable to Parent | (5) | (20) | 21 | (47)
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent | 10 | 3 | 32 | 9
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent | (1) | (2) | (7) | (2)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | 4 | (19) | 46 | (40)
Ending balance | (433) | (376) | (433) | (376)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 14 | 24 | 21 | 16
OCI, before Reclassifications, before Tax, Attributable to Parent | 1 | (5) | (7) | 4
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent | 0 | 0 | 0 | 0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent | 1 | (2) | 2 | (3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | 2 | (7) | (5) | 1
Ending balance | 16 | 17 | 16 | 17
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | (17) | (28) | (48) | 6
OCI, before Reclassifications, before Tax, Attributable to Parent | (1) | (12) | 30 | (46)
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent | 0 | 0 | 0 | 0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent | 0 | 0 | 0 | 0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | (1) | (12) | 30 | (46)
Ending balance | (18) | (40) | (18) | (40)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | (489) | (428) | (511) | (444)
OCI, before Reclassifications, before Tax, Attributable to Parent | 0 | 0 | 4 | 0
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent | 14 | 11 | 42 | 33
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent | (5) | (4) | (15) | (10)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | 9 | 7 | 31 | 23
Ending balance | (480) | (421) | (480) | (421)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 57 | 75 | 65 | 83
OCI, before Reclassifications, before Tax, Attributable to Parent | 0 | 0 | 0 | 0
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent | (6) | (8) | (19) | (22)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent | 2 | 3 | 7 | 9
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | (4) | (5) | (12) | (13)
Ending balance | 53 | (70) | 53 | (70)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | (2) | 0 | (6) | 3
OCI, before Reclassifications, before Tax, Attributable to Parent | (5) | (3) | (6) | (5)
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent | 2 | 0 | 9 | (2)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent | 1 | 1 | (1) | 2
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | (2) | (2) | 2 | (5)
Ending balance | $ (4) | $ (2) | $ (4) | $ (2)

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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- Definition Amount before tax and reclassification adjustments of other comprehensive income (loss) attributable to parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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