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STOCKHOLDERS' EQUITY (Tables) | 6 Months Ended
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Apr. 30, 2018
Schedule of Accumulated Other Comprehensive Income (Loss) | Changes in accumulated other comprehensive income (loss) by component and related tax effects were as follows (in millions):
|  |  |  | Net defined benefit pension cost and post retirement plan costs |  |  |  |
Three Months Ended April 30, 2018 |  | Foreign currency translation |  | Prior service credits |  | Actuarial Losses |  | Unrealized gains (losses) on derivatives |  | Total
|  | (in millions)
As of January 31, 2018 |  | $ | (77 | ) |  | $ | 139 |  |  | $ | (322 | ) |  | $ | (9 | ) |  | $ | (269 | )
Other comprehensive income (loss) before reclassifications |  | (53 | ) |  | — |  |  | — |  |  | 5 |  |  | (48 | )
Amounts reclassified out of accumulated other comprehensive income (loss) |  | — |  |  | (2 | ) |  | 10 |  |  | 5 |  |  | 13 |
Tax expense |  | — |  |  | — |  |  | (3 | ) |  | (3 | ) |  | (6 | )
Other comprehensive income (loss) |  | (53 | ) |  | (2 | ) |  | 7 |  |  | 7 |  |  | (41 | )
As of April 30, 2018 |  | $ | (130 | ) |  | $ | 137 |  |  | $ | (315 | ) |  | $ | (2 | ) |  | $ | (310 | )
Six Months Ended April 30, 2018 |  |  |  |  |  |  |  |  |  |
As of October 31, 2017 |  | $ | (156 | ) |  | $ | 140 |  |  | $ | (328 | ) |  | $ | (2 | ) |  | $ | (346 | )
Other comprehensive income (loss) before reclassifications |  | 26 |  |  | — |  |  | (1 | ) |  | (5 | ) |  | 20 |
Amounts reclassified out of accumulated other comprehensive income (loss) |  | — |  |  | (4 | ) |  | 19 |  |  | 5 |  |  | 20 |
Tax (expense) benefit |  | — |  |  | 1 |  |  | (5 | ) |  | — |  |  | (4 | )
Other comprehensive income (loss) |  | 26 |  |  | (3 | ) |  | 13 |  |  | — |  |  | 36 |
As of April 30, 2018 |  | $ | (130 | ) |  | $ | 137 |  |  | $ | (315 | ) |  | $ | (2 | ) |  | $ | (310 | )
Reclassification out of Accumulated Other Comprehensive Income | Reclassifications out of accumulated other comprehensive income (loss) for the three and six months ended April 30, 2018 and 2017 were as follows (in millions):
Details about accumulated other comprehensive income (loss) components |  | Amounts Reclassified from other comprehensive income (loss) |  | Affected line item in statement of operations
|  | Three Months Ended |  | Six Months Ended |  |
|  | April 30, |  | April 30, |  |
|  | 2018 |  | 2017 |  | 2018 |  | 2017 |  |
Unrealized gain (loss) on derivatives |  | $ | (5 | ) |  | $ | 1 |  |  | $ | (5 | ) |  | $ | 2 |  |  | Cost of products
|  | (5 | ) |  | 1 |  |  | (5 | ) |  | 2 |  |  | Total before income tax
|  | 2 |  |  | — |  |  | 2 |  |  | (1 | ) |  | (Provision) benefit for income tax
|  | (3 | ) |  | 1 |  |  | (3 | ) |  | 1 |  |  | Total net of income tax
Net defined benefit pension cost and post retirement plan costs: |  |  |  |  |  |  |  |  |  |
Actuarial net loss |  | (10 | ) |  | (12 | ) |  | (19 | ) |  | (34 | ) |  |
Prior service benefit |  | 2 |  |  | 3 |  |  | 4 |  |  | 5 |  |  |
|  | (8 | ) |  | (9 | ) |  | (15 | ) |  | (29 | ) |  | Total before income tax
|  | 3 |  |  | 2 |  |  | 4 |  |  | 8 |  |  | Benefit for income tax
|  | (5 | ) |  | (7 | ) |  | (11 | ) |  | (21 | ) |  | Total net of income tax
Total reclassifications for the period |  | $ | (8 | ) |  | $ | (6 | ) |  | $ | (14 | ) |  | $ | (20 | ) |  |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + 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=66004124&loc=SL7669686-108580 + Details
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