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SHARE-BASED COMPENSATION (Stock Option Activity) (Details) - $ / shares shares in Thousands | 12 Months Ended
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Oct. 31, 2015 | Oct. 31, 2014 | Oct. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |
Outstanding, beginning balance (in shares) | 2,202 |  |
Keysight converted at October 31, 2014 (in shares) | 3,947 |  |
Granted (in shares) | 968 |  |
Exercised (in shares) | (830) |  |
Outstanding, ending balance (in shares) | 4,025 | 2,202 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |  |  |
Weighted-average exercise price per share, beginning of period (in dollars per share) | $ 36 |  |
Weighted-average exercise price per share, Keysight converted at October 31, 2014 (in dollars per share) | 20 |  |
Weighted-average exercise price per share, granted (in dollars per share) | 31 |  |
Weighted-average exercise price per share, exercised (in dollars per share) | 16 | $ 30 | $ 28
Weighted-average exercise price per share, end of period (in dollars per share) | $ 24 | 36 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Volume-weighted average trading price of Keysight Shares over the first two trading sessions immediately after the Distribution Date (in dollars per share) |  | 30.80 |
Forfeited and expired options from total cancellations [Abstract] |  |  |
Forfeited (in shares) | 16 |  |
Expired (in shares) | 44 |  |
Total options canceled (in shares) | (60) |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options forfeited and expired, Additional Disclosures [Abstract] |  |  |
Weighted-average exercise price per share, forfeited (in dollars per share) | $ 27 |  |
Weighted-average exercise price per share, expired (in dollars per share) | 15 |  |
Weighted-average exercise price per share, total options cancelled (in dollars per share) | $ 18 |  |
Agilent [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share price (in dollars per share) |  | $ 55.28 |

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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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