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Stockholders' Equity (Tables) | 12 Months Ended
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Oct. 31, 2018
Stockholders' Equity Note [Abstract] |
Schedule of tax effects related to changes in Other Comprehensive (Loss) Income | Taxes related to Other Comprehensive Income (Loss)
| Fiscal years ended October 31,
| 2018 |  | 2017 |  | 2016
| In millions
Taxes on change in net unrealized losses on available-for-sale securities: |  |  |  |  |  |  |  |
Tax (provision) benefit on net unrealized losses arising during the period | $ | — |  |  | $ | (2 | ) |  | $ | 2 |
Tax provision (benefit) on (gains) losses reclassified into earnings | — |  |  | 1 |  |  | (2 | )
| — |  |  | (1 | ) |  | — |
Taxes on change in net unrealized gains (losses) on cash flow hedges: |  |  |  |  |  |  |  |
Tax (provision) benefit on net unrealized gains arising during the period | (22 | ) |  | 6 |  |  | (14 | )
Tax (benefit) provision on net losses (gains) reclassified into earnings | (1 | ) |  | 10 |  |  | 25 |
| (23 | ) |  | 16 |  |  | 11 |
Taxes on change in unrealized components of defined benefit plans: |  |  |  |  |  |  |  |
Tax benefit (provision) on (losses) gains arising during the period | 2 |  |  | (49 | ) |  | 63 |
Tax provision on amortization of actuarial loss and prior service benefit | (14 | ) |  | (19 | ) |  | (20 | )
Tax provision on curtailments, settlements and other | (10 | ) |  | (91 | ) |  | (1 | )
| (22 | ) |  | (159 | ) |  | 42 |
Taxes on change in cumulative translation adjustment: |  |  |  |  |
Tax on cumulative translation adjustment arising during the period | 3 |  |  | (1 | ) |  | 20 |
Tax on release of cumulative translation adjustment as a result of divestitures | — |  |  | — |  |  | (22 | )
| 3 |  |  | (1 | ) |  | (2 | )
Tax (provision) benefit on other comprehensive (loss) income | $ | (42 | ) |  | $ | (145 | ) |  | $ | 51 |
Schedule of changes and reclassifications related to items of Other Comprehensive (Loss) Income, net of taxes | Changes and reclassifications related to Other Comprehensive Income (Loss), net of taxes
| Fiscal years ended October 31,
| 2018 |  | 2017 |  | 2016
| In millions
Other comprehensive (loss) income, net of taxes: |  |  |  |  |  |  |  |
Change in net unrealized losses on available-for-sale securities: |  |  |  |  |  |  |  |
Net unrealized losses arising during the period | $ | (3 | ) |  | $ | (10 | ) |  | $ | (2 | )
(Gains) losses reclassified into earnings | (9 | ) |  | (3 | ) |  | 1 |
| (12 | ) |  | (13 | ) |  | (1 | )
Change in net unrealized gains (losses) on cash flow hedges: |  |  |  |  |  |  |  |
Net unrealized gains arising during the period | 147 |  |  | 52 |  |  | 212 |
Net losses (gains) reclassified into earnings(1) | 7 |  |  | (135 | ) |  | (245 | )
| 154 |  |  | (83 | ) |  | (33 | )
Change in unrealized components of defined benefit plans: |  |  |  |  |  |  |  |
(Losses) gains arising during the period | (421 | ) |  | 895 |  |  | (1,714 | )
Amortization of actuarial loss and prior service benefit(2) | 177 |  |  | 266 |  |  | 264 |
Curtailments, settlements and other | 12 |  |  | (76 | ) |  | (19 | )
| (232 | ) |  | 1,085 |  |  | (1,469 | )
Change in cumulative translation adjustment: |  |  |  |  |
Cumulative translation adjustment arising during the period | (67 | ) |  | (15 | ) |  | (134 | )
Release of cumulative translation adjustment as a result of divestitures and country exits | 20 |  |  | — |  |  | 53 |
| (47 | ) |  | (15 | ) |  | (81 | )
Other comprehensive (loss) income, net of taxes | $ | (137 | ) |  | $ | 974 |  |  | $ | (1,584 | )
(1) | For more details on reclassification of pre-tax losses (gains) on cash flow hedges into the Consolidated Statements of Earnings, see Note 14, "Financial Instruments".
(2) | These components are included in the computation of net pension and post-retirement benefit (credit) cost in Note 6, "Retirement and Post-Retirement Benefit Plans".
Schedule of Accumulated Other Comprehensive loss, net of taxes | The components of accumulated other comprehensive loss, net of taxes as of October 31, 2018 and changes during fiscal 2018 were as follows:
| Net unrealized gains (losses) on available-for-sale securities |  | Net unrealized gains (losses) on cash flow hedges |  | Unrealized components of defined benefit plans |  | Cumulative translation adjustment |  | Accumulated other comprehensive loss
| In millions
Balance at beginning of period | $ | 29 |  |  | $ | (48 | ) |  | $ | (2,690 | ) |  | $ | (186 | ) |  | $ | (2,895 | )
Activity related to separation and merger transactions | — |  |  | — |  |  | — |  |  | (186 | ) |  | (186 | )
Other comprehensive (loss) income before reclassifications | (3 | ) |  | 147 |  |  | (421 | ) |  | (67 | ) |  | (344 | )
Reclassifications of (gains) losses into earnings | (9 | ) |  | 7 |  |  | 189 |  |  | 20 |  |  | 207 |
Balance at end of period | $ | 17 |  |  | $ | 106 |  |  | $ | (2,922 | ) |  | $ | (419 | ) |  | $ | (3,218 | )

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- Definition Tabular disclosure of tax effect of components of comprehensive income (loss) including, but not limited to: (a) foreign currency translation adjustments; (b) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (c) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (d) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (e) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (f) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (g) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans. + References No definition available. + Details
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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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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=84228862&loc=SL7669686-108580 + Details
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