v3.8.0.1

Taxes on Earnings - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Apr. 30, 2018 | Apr. 30, 2017 | Apr. 30, 2018 | Apr. 30, 2017 | Oct. 31, 2017
Income Tax Disclosure [Abstract] |  |  |  |  |
Effective tax rate (as a percent) | 832.80% | 523.00% | 401.70% | 150.70% |
Net income tax charges (benefits) | $ (1,000) | $ (556) | $ (3,200) | $ 525 |
Pre-Separation tax matters | 1,100 |  | 2,000 |  |
Net excess tax benefits related to stock compensation | 28 |  | 42 |  |
Income tax benefit on restructuring charges, separation costs, transformation costs and acquisition and other related charges | 18 | 36 | 62 | 67 |
Income tax benefits from U.S. tax reform | 125 |  | 681 |  |
Benefit from liquidation of business |  |  | 203 |  |
Foreign tax credit |  |  | 239 |  |
Accrued divestiture tax |  | 110 |  | 110 |
Valuation allowance |  | 473 |  | 473 |
Tax indemnification |  | $ 13 |  | $ 31 |
Transition tax | 100 |  | 1,100 |  |
Provisional tax benefit from Tax Cut and Jobs Act |  |  | 1,800 |  |
Unrecognized tax benefits | 8,800 |  | 8,800 |  | $ 11,300
Unrecognized tax benefits that would affect effective tax rate if realized | 1,000 |  | 1,000 |  | 3,000
Decrease from settlements with IRS |  |  | 2,500 |  |
Accrued income tax for interest and penalties | 165 |  | $ 165 |  | $ 304
Likelihood of no resolution period |  |  | 12 months |  |
Reasonably possible reduction in existing unrecognized tax benefits within the next 12 months | $ 85 |  | $ 85 |  |
Likelihood of conclusion period for certain federal, foreign and state tax issues |  |  | 12 months |  |

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- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign tax credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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