INCOME TAXES (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2017 |
Apr. 30, 2016 |
Apr. 30, 2017 |
Apr. 30, 2016 |
|
| Income Tax Examination [Line Items] | ||||
| Income Tax Expense (Benefit) | $ (27) | $ (1) | $ 16 | $ 19 |
| Increase in tax resulting from transfer of a portion of Japanese employees pension fund | $ 22 | |||
| Income Tax Holiday, Aggregate Dollar Amount | $ 36 | $ 47 | ||
| Income Tax Holiday, Income Tax Benefits Per Share | $ 0.21 | $ 0.28 | ||
| Majority of company's entities [Member] | ||||
| Income Tax Examination [Line Items] | ||||
| Open Tax Year | 2014 | |||
| Certain foreign entities [Member] | ||||
| Income Tax Examination [Line Items] | ||||
| Open Tax Year | 2006 | |||
| Internal Revenue Service (IRS) [Member] | ||||
| Income Tax Examination [Line Items] | ||||
| Effective Income Tax Rate, Percent | (126.10%) | (1.10%) | 9.00% | 11.00% |
| Income Tax Expense (Benefit) | $ (27) | $ (1) | $ 16 | $ 19 |
| Net Discrete Tax expense (Benefit) | $ 8 | $ (3) | $ 31 | $ (2) |
| Foreign Tax Authority [Member] | ||||
| Income Tax Examination [Line Items] | ||||
| Income Tax Holiday, Description | Keysight benefits from tax incentives in several jurisdictions, most significantly in Singapore, and several jurisdictions have granted us tax incentives that require renewal at various times in the future. The tax incentives provide lower rates of taxation on certain classes of income and require thresholds of investments and employment or specific types of income in those jurisdictions. | |||
| Income Tax Holiday, Termination Date | The Singapore tax incentive is due for renewal in fiscal 2024. | |||