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STOCKHOLDERS' EQUITY (Tables) | 12 Months Ended
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Oct. 31, 2019
Statement of Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The following table summarizes the components of our accumulated other comprehensive loss as of October 31, 2019 and 2018, net of tax effect:
| October 31,
| 2019 |  | 2018
| (in millions)
Unrealized gain on equity securities, net of tax (expense) of zero and $(2) | $ | — |  |  | $ | — |
Foreign currency translation, net of tax (expense) of $(63) and $(63) | (43 | ) |  | (60 | )
Unrealized losses on defined benefit plans, net of tax benefit of $113 and $81 | (532 | ) |  | (426 | )
Unrealized losses on derivative instruments, net of tax (expense) of zero and $(1) | (3 | ) |  | (2 | )
Total accumulated other comprehensive loss | $ | (578 | ) |  | $ | (488 | )
Changes in accumulated other comprehensive income (loss) by component and related tax effects for the years ended October 31, 2019 and 2018 were as follows:
|  |  |  |  | Net defined benefit pension cost and post retirement plan costs: |  |  |  |
| Unrealized gain (loss) on equity securities |  | Foreign currency translation |  | Actuarial Losses |  | Prior service credits |  | Unrealized gains (losses) on derivatives |  | Total
| (in millions)
At October 31, 2017 | $ | 14 |  |  | $ | (39 | ) |  | $ | (468 | ) |  | $ | 35 |  |  | $ | 1 |  |  | $ | (457 | )
Other comprehensive income (loss) before reclassifications | (17 | ) |  | (21 | ) |  | (23 | ) |  | — |  |  | — |  |  | (61 | )
Amounts reclassified out of accumulated other comprehensive income (loss) | — |  |  | — |  |  | 53 |  |  | (22 | ) |  | (4 | ) |  | 27 |
Tax (expense) benefit | 3 |  |  | — |  |  | (7 | ) |  | 6 |  |  | 1 |  |  | 3 |
Other comprehensive income (loss) for the twelve months ended October 31, 2018 | (14 | ) |  | (21 | ) |  | 23 |  |  | (16 | ) |  | (3 | ) |  | (31 | )
At October 31, 2018 | — |  |  | (60 | ) |  | (445 | ) |  | 19 |  |  | (2 | ) |  | (488 | )
Other comprehensive income (loss) before reclassifications | — |  |  | 17 |  |  | (168 | ) |  | — |  |  | (5 | ) |  | (156 | )
Amounts reclassified out of accumulated other comprehensive income (loss) | — |  |  | — |  |  | 49 |  |  | (19 | ) |  | 3 |  |  | 33 |
Tax (expense) benefit | — |  |  | — |  |  | 28 |  |  | 4 |  |  | 1 |  |  | 33 |
Other comprehensive income (loss) for the twelve months ended October 31, 2019 | — |  |  | 17 |  |  | (91 | ) |  | (15 | ) |  | (1 | ) |  | (90 | )
At October 31, 2019 | $ | — |  |  | $ | (43 | ) |  | $ | (536 | ) |  | $ | 4 |  |  | $ | (3 | ) |  | $ | (578 | )
Reclassification out of Accumulated Other Comprehensive Income | Reclassifications out of accumulated other comprehensive loss for the years ended October 31, 2019 and 2018 were as follows:
Details about accumulated other comprehensive loss components |  | Amounts reclassified from other comprehensive loss |  | Affected line item in statement of operations
|  | Year Ended October 31, |  |
|  | 2019 |  | 2018 |  |
|  | (in millions) |  |
Unrealized gains (losses) on derivatives |  | $ | (1 | ) |  | $ | 4 |  |  | Cost of products
|  | (2 | ) |  | — |  |  | Selling, general and administrative
|  | — |  |  | (1 | ) |  | Provision for income tax
|  | (3 | ) |  | 3 |  |  | Net of Income Tax
Net defined benefit pension cost and post retirement plan costs: |  |  |  |  |  |
Net actuarial losses |  | (49 | ) |  | (53 | ) |  |
Prior service credits |  | 19 |  |  | 22 |  |  |
|  | (30 | ) |  | (31 | ) |  | Total before income tax
|  | 7 |  |  | 9 |  |  | Provision for income tax
|  | (23 | ) |  | (22 | ) |  | Net of income tax
Total reclassifications for the period |  | $ | (26 | ) |  | $ | (19 | ) |  |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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