v3.7.0.1

Taxes on Earnings (Details) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 30, 2017 USD ($) | Apr. 30, 2016 USD ($) | Apr. 30, 2017 USD ($) country | Apr. 30, 2016 USD ($) | Oct. 31, 2016 USD ($)
Differences between the U.S. federal statutory income tax rate and HP's effective tax rate |  |  |  |  |
Effective tax rate (as a percent) | 582.20% | 2.40% | 152.80% | 7.90% |
Valuation allowance | $ 473 |  | $ 473 |  |
Accrued divestiture tax | 110 |  | $ 110 |  |
U.S. federal statutory income tax rate (as a percent) |  |  | 35.00% |  |
Net income tax charges (benefits) related to discrete items | 506 | $ (92) | $ 471 | $ (174) |
Other benefits | (473) |  |  |  |
Income tax charges for various prior period adjustments | (79) |  | $ (141) |  |
Number of countries other than the United States where the entity is subject to income tax | country |  |  | 110 |  |
Unrecognized tax benefits | 11,500 |  | $ 11,500 |  | $ 11,400
Unrecognized tax benefits that would affect effective tax rate if realized | 3,000 |  | 3,000 |  | 2,900
Accrued income tax for interest and penalties | 403 |  | $ 403 |  | 394
Likelihood of no resolution period |  |  | 12 months |  |
Reasonably possible reduction in existing unrecognized tax benefits within the next 12 months | 2,700 |  | $ 2,700 |  |
Likelihood of conclusion period for certain federal, foreign and state tax issues |  |  | 12 months |  |
Deferred tax assets - long-term | 3,491 |  | $ 3,491 |  | 3,830
Deferred tax liabilities - long-term | (83) |  | (83) |  | (98)
Deferred tax assets net of deferred tax liabilities | $ 3,408 |  | 3,408 |  | 3,732
Advance royalty proceeds received from multi-year intercompany licensing arrangements |  |  | $ 439 |  | $ 3,700
Royalty recognition term |  |  | 5 years |  |

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: 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=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: 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=6907707&loc=d3e32698-109319 + Details
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