Keysight (KEYS) 10-Q 31 Aug 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Jul. 31, 2018	Aug. 30, 2018
Entity Information [Line Items]
Entity Registrant Name	Keysight Technologies, Inc.
Entity Central Index Key	1,601,046
Current Fiscal Year End Date	--10-31
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		187,428,054
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 31, 2018
Trading Symbol	KEYS

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Net revenue [Abstract]
Products	$ 842	$ 695	$ 2,356	$ 1,935
Services and other	162	137	475	376
Total net revenue	1,004	832	2,831	2,311
Costs and expenses:
Cost of products	359	349	1,063	876
Cost of services and other	80	72	233	207
Total costs	439	421	1,296	1,083
Research and development	151	132	453	359
Selling, general and administrative	289	286	877	755
Other operating expense (income), net	(3)	(3)	(18)	(86)
Total costs and expenses	876	836	2,608	2,111
Income (loss) from operations	128	(4)	223	200
Interest income	3	2	8	5
Interest expense	(20)	(22)	(63)	(58)
Other income (expense), net	2	(1)	5	2
Income (loss) before taxes	113	(25)	173	149
Provision (benefit) for income taxes	(8)	(7)	(106)	9
Net income (loss)	$ 121	$ (18)	$ 279	$ 140
Net income (loss) per share:
Basic (in dollars per share)	$ 0.64	$ (0.10)	$ 1.49	$ 0.78
Diluted (in dollars per share)	$ 0.63	$ (0.10)	$ 1.46	$ 0.78
Weighted average shares used in computing net income (loss) per share:
Basic (in shares)	188	186	187	178
Diluted (in shares)	191	186	191	180

CONDENSED CONSOLIDATED STATEME3

CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Other comprehensive income (loss):
Net income (loss)	$ 121	$ (18)	$ 279	$ 140
Unrealized gain (loss) on investments, net of tax benefit of zero, $1, $1 and $1	(7)	0	(9)	4
Unrealized gain (loss) on derivative instruments, net of tax benefit (expense) of $(1), zero, $(1) and $(1)	0	1	2	2
Amounts reclassified into earnings related to derivative instruments, net of tax benefit (expense) of $1, zero, $1 and $(1)	0	(1)	(3)	0
Foreign currency translation, net of tax benefit (expense) of zero	(29)	15	(1)	0
Net defined benefit pension cost and post retirement plan costs:
Change in actuarial net loss, net of tax expense of $4, $6, $11 and $24	9	12	30	52
Change in net prior service credit, net of tax benefit of $2, $2, $5 and $6	(3)	(4)	(11)	(12)
Other comprehensive income (loss)	(30)	23	8	46
Total comprehensive income	$ 91	$ 5	$ 287	$ 186

CONDENSED CONSOLIDATED STATEME4

CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Other comprehensive income (loss), tax, parenthetical disclosures [Abstract]
Unrealized gain (loss) on investments, tax	$ 0	$ 1	$ 1	$ 1
Unrealized gain (loss) on derivative instruments, tax	(1)	0	(1)	(1)
Amounts reclassified into earnings related to derivative instruments, tax	1	0	(1)	1
Foreign currency translation, tax	0	0	0	0
Net defined benefit pension cost and post retirement plan costs, tax [Abstract]
Change in actuarial net loss, tax	(4)	(6)	(11)	(24)
Change in net prior service credit, tax	$ 2	$ 2	$ 5	$ 6

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) - USD ($) $ in Millions	Jul. 31, 2018	Oct. 31, 2017
Current assets:
Cash and cash equivalents	$ 742	$ 818
Accounts receivable, net	597	547
Inventory	609	588
Other current assets	234	224
Total current assets	2,182	2,177
Property, plant and equipment, net	549	530
Goodwill	1,888	1,882
Other intangible assets, net	702	855
Long-term investments	54	63
Long-term deferred tax assets	186	186
Other assets	285	240
Total assets	5,846	5,933
Current liabilities:
Current portion of long-term debt	0	10
Accounts payable	231	211
Employee compensation and benefits	213	217
Deferred revenue	333	291
Income and other taxes payable	45	28
Other accrued liabilities	78	62
Total current liabilities	900	819
Long-term debt	1,790	2,038
Retirement and post-retirement benefits	220	309
Long-term deferred revenue	122	101
Other long-term liabilities	201	356
Total liabilities	3,233	3,623
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock; $0.01 par value; 100 million shares authorized; none issued and outstanding	0	0
Common stock; $0.01 par value; 1 billion shares authorized; 191 million shares at July 31, 2018 and 188 million shares at October 31, 2017 issued	2	2
Treasury stock at cost; 3.7 million shares at July 31, 2018 and 2.3 million shares at October 31, 2017	(142)	(62)
Additional paid-in-capital	1,876	1,786
Retained earnings	1,326	1,041
Accumulated other comprehensive loss	(449)	(457)
Total stockholder's equity	2,613	2,310
Total liabilities and equity	$ 5,846	$ 5,933

CONDENSED CONSOLIDATED BALANCE6

CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) - $ / shares shares in Millions	Jul. 31, 2018	Oct. 31, 2017
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100	100
Preferred stock, issued and outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000	1,000
Common Stock, Shares, Issued	191	188
Treasury Stock, Shares	3.7	2.3

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Cash flows from operating activities:
Net Income	$ 279	$ 140
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	78	70
Amortization	155	83
Share-based compensation	48	44
Debt issuance expense	0	9
Deferred tax benefit	(227)	(43)
Excess and obsolete inventory-related charges	20	12
Gain on sale of assets and divestiture	(8)	(8)
Asset impairment	0	7
Pension curtailment and settlement gains	0	(68)
Other non-cash expenses, net	9	1
Changes in assets and liabilities:
Accounts receivable	(55)	14
Inventory	(43)	10
Accounts payable	13	(17)
Employee compensation and benefits	(2)	(33)
Retirement and post-retirement benefits	(116)	(10)
Deferred Revenue	65	58
Income taxes payable	96	8
Other assets and liabilities	8	(12)
Net cash provided by operating activities	320	265
Cash flows from investing activities:
Investments in property, plant and equipment	(98)	(54)
Proceeds from sale of property, plant and equipment	0	8
Proceeds from sale of investments	0	42
Proceeds from divestiture	12	0
Acquisition of businesses and intangible assets, net of cash acquired	(11)	(1,642)
Net cash used in investing activities	(97)	(1,646)
Cash flows from financing activities:
Proceeds from issuance of common stock under employee stock plans	62	51
Proceeds from issuance of common stock under public offering	0	444
Payment of taxes related to net share settlement of equity awards	(18)	(12)
Proceeds from short-term borrowings	40	170
Proceeds from issuance of long-term debt	0	1,069
Payment of debt issuance costs	0	(16)
Repayment of debt and credit facility	(300)	(240)
Treasury stock repurchases	(80)	0
Net Cash provided (used) by financing activities	(296)	1,466
Effect of exchange rate movements	(3)	5
Net increase (decrease) in cash and cash equivalents	(76)	90
Cash and cash equivalents at beginning of period	818	783
Cash and cash equivalents at end of period	$ 742	$ 873

OVERVIEW, BASIS OF PRESENTATION

OVERVIEW, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
	Jul. 31, 2018
Accounting Policies [Abstract]
OVERVIEW, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	1. OVERVIEW, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Overview. Keysight Technologies, Inc. ("we", "us", "Keysight" or the "company"), incorporated in Delaware on December 6, 2013, is a measurement company providing electronic design and test solutions to communications and electronics industries. Following the acquisition of Ixia on April 18, 2017, the company also provides testing, visibility, and security solutions, strengthening applications across physical and virtual networks for enterprises, service providers, and network equipment manufacturers. Our fiscal year-end is October 31, and our fiscal quarters end on January 31, April 30 and July 31. Unless otherwise stated, these dates refer to our fiscal year and fiscal quarters. Basis of Presentation. We have prepared the accompanying financial statements pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the U.S. ("GAAP") have been condensed or omitted pursuant to such rules and regulations. The accompanying financial statements and information should be read in conjunction with our Annual Report on Form 10-K. In the opinion of management, the accompanying condensed consolidated financial statements contain all normal and recurring adjustments necessary to state fairly our condensed consolidated balance sheet as of July 31, 2018 and October 31, 2017 , condensed consolidated statement of comprehensive income for the three and nine months ended July 31, 2018 and 2017 , condensed consolidated statement of operations for the three and nine months ended July 31, 2018 and 2017 , and condensed consolidated statement of cash flows for the nine months ended July 31, 2018 and 2017 . Use of Estimates. The preparation of condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts reported in our condensed consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and various other assumptions believed to be reasonable. Although these estimates are based on management’s knowledge of current events and actions that may impact the company in the future, actual results may be different from the estimates. Our critical accounting policies are those that affect our financial statements materially and involve difficult, subjective or complex judgments by management. Those policies are revenue recognition, inventory valuation, share-based compensation, retirement and post-retirement plan assumptions, valuation of goodwill and other intangible assets, warranty, restructuring, and accounting for income taxes. Land Sale. On April 30, 2014 we entered into a binding contract to sell land in the United Kingdom ("U.K.") that resulted in the transfer of three separate land tracts in May 2014, November 2015 and November 2016 for £21 million . In the nine months ended July 31, 2017, we recognized a gain of $8 million on the sale of the land tracts in other operating expense (income). Restricted Cash. As of both July 31, 2018 and October 31, 2017, restricted cash of approximately $2 million consisted of deposits held as collateral against bank guarantees and is classified within other assets in the condensed consolidated balance sheet. Update to Significant Accounting Policies. There have been no material changes to our significant accounting policies, as compared to the significant accounting policies described in our Annual Report on Form 10-K for the fiscal year ended October 31, 2017 .

NEW ACCOUNTING PRONOUNCEMENTS

NEW ACCOUNTING PRONOUNCEMENTS	9 Months Ended
	Jul. 31, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
NEW ACCOUNTING PRONOUNCEMENTS	2. NEW ACCOUNTING PRONOUNCEMENTS Accounting Standards Update ("ASU") 2014-09, Revenue From Contracts With Customers. In May 2014, the Financial Accounting Standards Board ("FASB") issued guidance which will replace numerous requirements in GAAP, including industry-specific requirements, and provide companies with a single revenue recognition model for recognizing revenue from contracts with customers. The core principle of the new standard is that a company should recognize revenue to show the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In July 2015, the FASB deferred the effective date by one year to December 15, 2017 for annual reporting periods beginning after that date. The FASB also permitted early adoption of the standard, but not before the original effective date of December 15, 2016. During 2016, the FASB issued several amendments to the standard, including clarification to the guidance on reporting revenues as a principal versus an agent, identifying performance obligations, accounting for intellectual property licenses, assessing collectability, presentation of sales taxes, impairment testing for contract costs and disclosure of performance obligations. The two permitted transition methods under the new standard are (1) the full retrospective method, in which case the standard would be applied to each prior reporting period presented, and the cumulative effect of applying the standard would be recognized at the earliest period shown, or (2) the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. We currently anticipate adopting the standard on November 1, 2018 under the modified retrospective transition method. Based on the progress to date, we have not identified any material impacts of the new standard on the amount and timing of revenue recognition to our consolidated statement of operations. We expect recognition of revenue for a majority of customer contracts to remain substantially unchanged. While we are continuing to assess all potential impacts of the standard, we currently believe the most significant impact relates to our accounting for software license revenue, as under the new standard we expect to recognize software license revenue at the time of delivery rather than over the contractual term since control of the software license is transferred, and our performance obligation is satisfied at that point in time. The new standard will also require certain costs, primarily sales-related commissions on contracts greater than one year in duration, to be capitalized rather than expensed as currently. ASU 2016-02, Leases. In February 2016, the FASB issued guidance that will require organizations that lease assets to recognize assets and liabilities for leases with lease terms of more than 12 months. Consistent with current GAAP, the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance or operating lease. However, unlike current GAAP, which requires only capital leases to be recognized on the balance sheet, the new guidance will require both types of leases to be recognized on the balance sheet. We expect our leases designated as operating leases in Note 17 to the consolidated financial statements in our Annual Report on Form 10-K for the fiscal year ended October 31, 2017 will be reported on the consolidated balance sheets upon adoption. The standard is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are evaluating the impact of adopting this guidance and related amendments on our consolidated financial statements. ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. In March 2016, the FASB issued guidance that amends the accounting for stock-based compensation and requires excess tax benefits and deficiencies to be recognized as a component of income tax expense rather than equity. The inclusion of excess tax benefits and deficiencies as a component of income tax expense will increase volatility within our provision for income taxes as the amount of excess tax benefits or deficiencies from stock-based compensation awards depends on our stock price at the date the awards vest. This guidance also requires excess tax benefits and deficiencies to be presented as operating activity in the statement of cash flows and allows an entity to make an accounting policy election to either estimate expected forfeitures or to account for them as they occur. We adopted this guidance during the first quarter of 2018 and elected to recognize forfeitures as they occur. As a result, a $6 million cumulative-effect adjustment was recorded directly to retained earnings as of November 1, 2017, the beginning of the annual period of adoption, with a corresponding reduction to deferred tax liabilities. Additionally, we reported an income tax benefit of $4 million for the nine months ended July 31, 2018 due to recognition of excess tax benefits from share-based compensation. We elected to apply the presentation requirements for cash flows related to excess tax benefits and employee taxes paid for withheld shares retrospectively to all periods presented, which resulted in the following change to our previously reported condensed consolidated statement of cash flows for the nine months ended July 31, 2017: Nine Months Ended July 31, 2017 As Originally Reported As Adjusted Change (in millions) Net cash provided by operating activities $ 249 $ 265 $ 16 Net cash provided by financing activities $ 1,482 $ 1,466 $ (16 ) ASU 2017-07 Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost. In March 2017, the FASB issued guidance that requires the service cost component of net periodic pension cost and net periodic postretirement benefit cost to be included in operating expenses (together with other employee compensation costs) and the other components of the cost to be presented in the statement of operations separately from the service cost component and outside of income from operations. The standard is effective for annual and interim periods beginning after December 31, 2017. Early adoption is permitted. We currently anticipate adopting the standard on November 1, 2018. See Note 12 herein and Note 15 to the consolidated financial statements in our Annual Report on Form 10-K for the fiscal year ended October 31, 2017 for the amount of each component of net periodic pension and postretirement benefit costs we have reported historically. The amounts of net periodic pension and post-retirement benefit costs in these filings are not necessarily indicative of future amounts that may arise in years following implementation of the new accounting pronouncement. ASU 2017-09, Scope of Modification Accounting. In May 2017, the FASB issued guidance that clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Specifically, an entity would not apply modification accounting if the fair value, vesting conditions, and classification of the awards are the same immediately before and after the modification. The standard is effective for fiscal years beginning after December 31, 2017, and interim periods within those fiscal years. Early adoption is permitted. We do not expect a material impact to our consolidated financial statements due to the adoption of this guidance. ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities. In August 2017, the FASB issued guidance to enable entities to better portray the economics of their risk management activities in the financial statements and enhance transparency and understandability of hedge results. The standard is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are evaluating the impact of adopting this guidance on our consolidated financial statements. ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. In February 2018, the FASB issued guidance that allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act enacted in December 2017. The standard is effective for fiscal years beginning after December 15, 2018. Early adoption is permitted. We are evaluating the impact of adopting this guidance on our consolidated financial statements. ASU 2018-07, Improvements to Nonemployee Share-Based Payment Accounting. In June 2018, the FASB issued guidance to simplify the accounting for share-based payments to nonemployees by aligning it with the accounting for share-based payments to employees, with certain exceptions. The standard is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We do not expect a material impact to our consolidated financial statements due to the adoption of this guidance. Other amendments to GAAP that have been issued by the FASB or other standards-setting bodies that do not require adoption until a future date are not expected to have a material impact on our consolidated financial statements upon adoption.

ACQUISITIONS (Notes)

ACQUISITIONS (Notes)	9 Months Ended
	Jul. 31, 2018
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	3. ACQUISITIONS For a description of the company’s acquisition activity for the year ended October 31, 2017 reference is made to Note 3, “Acquisitions” included in our Annual Report on Form 10-K for the fiscal year ended October 31, 2017. The following represents pro forma operating results as if Ixia had been included in the company's condensed consolidated statements of operations as of the beginning of fiscal 2017. Pro forma results of operations for ScienLab have not been presented because the effects of the acquisition were not material to the company’s financial results. Nine Months Ended in millions, except per share amounts July 31, 2017 Net revenue $ 2,560 Net income $ 143 Net income per share - Basic $ 0.77 Net income per share - Diluted $ 0.76 The unaudited pro forma financial information for the nine months ended July 31, 2017 combines the historical results of Keysight and Ixia for the nine months ended July 31, 2017, assuming that the companies were combined as of November 1, 2016 and include business combination accounting effects from the acquisition including amortization and depreciation charges from acquired intangible assets, property plant and equipment, interest expense on the financing transactions used to fund the acquisition and acquisition-related transaction costs and tax-related effects. The pro forma information as presented above is for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place at the beginning of fiscal 2017.

SHARE-BASED COMPENSATION

SHARE-BASED COMPENSATION	9 Months Ended
	Jul. 31, 2018
Share-based Compensation [Abstract]
SHARE-BASED COMPENSATION	SHARE-BASED COMPENSATION Keysight accounts for share-based awards in accordance with the provisions of the authoritative accounting guidance, which requires the measurement and recognition of compensation expense for all share-based payment awards made to our employees and directors, including employee stock option awards, restricted stock units ("RSUs"), employee stock purchases made under our Employee Stock Purchase Plan (“ESPP”) and performance share awards granted to selected members of our senior management under the Long-Term Performance (“LTP”) Program based on estimated fair values. The impact of share-based compensation on our results was as follows: Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 (in millions) Cost of products and services $ 2 $ 3 $ 9 $ 9 Research and development 2 1 8 7 Selling, general and administrative 10 9 31 28 Total share-based compensation expense $ 14 $ 13 $ 48 $ 44 At both July 31, 2018 and 2017 , no share-based compensation was capitalized within inventory. The following assumptions were used to estimate the fair value of LTP Program grants: Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 LTP Program: Volatility of Keysight shares 25 % 26 % 25 % 27 % Volatility of selected index 14 % 15 % 14 % 15 % Price-wise correlation with selected peers 57 % 57 % 57 % 57 % Awards granted under the LTP Program are based on a variety of targets, such as total shareholder return (TSR) or financial metrics, such as operating margin, cost synergies and others. Awards based on TSR were valued using a Monte Carlo simulation model, and awards based on financial metrics were valued based on the market price of Keysight’s common stock on the date of grant. Monte Carlo simulation fair value models require the use of highly subjective and complex assumptions, including the option’s expected life and the price volatility of the underlying stock. The estimated fair value of restricted stock awards is determined based on the market price of Keysight’s common stock on the date of grant. We did not grant any option awards for the three and nine months ended July 31, 2018 and 2017, respectively.

INCOME TAXES

INCOME TAXES	9 Months Ended
	Jul. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The company’s effective tax rate was a benefit of 7.0 percent and 61.3 percent for the three and nine months ended July 31, 2018, respectively. The income tax benefit was $8 million and $106 million for the three and nine months ended July 31, 2018, respectively. The income tax benefit for the three months ended July 31, 2018 included a net discrete benefit of $12 million primarily related to the release of tax reserves resulting from the settlement of the income tax audit for acquired entities. The income tax benefit for the nine months ended July 31, 2018 included a net discrete benefit of $116 million primarily due to $109 million discrete tax benefit resulting from changes in U.S. tax law. The company’s effective tax rate was a benefit of 24.4 percent for the three months ended July 31, 2017 and an expense of 6.5 percent for the nine months ended July 31, 2017. The income tax benefit was $7 million for the three months ended July 31, 2017, and income tax expense was $9 million for the nine months ended July 31, 2017. The decrease in the total income tax expense for the three months ended July 31, 2017 is primarily due to the post-acquisition tax restructuring for integration of Ixia into our business model. The income tax provision for the three and nine months ended July 31, 2017 included a net discrete benefit of $33 million and $2 million, respectively. The increase in discrete benefit for the three months ended July 31, 2017 is primarily related to the post-acquisition tax restructuring for integration of Ixia into our business model. The net discrete benefit for the nine months ended July 31, 2017 is primarily related to the discrete benefit resulting from the post-acquisition tax restructuring for integration of Ixia into our business model, partially offset by the discrete expense related to an increase in the valuation allowance on certain state deferred tax assets, and the increase in discrete expense related to the transfer of a portion of the Japanese Employees’ Pension Fund (see Note 12). Keysight benefits from tax incentives in several jurisdictions, most significantly in Singapore, that 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. The Singapore tax incentive is due for renewal in fiscal 2024. Singapore announced potential changes to its IP incentive programs in its 2017 budget and has yet to finalize the new IP incentive regime. It is unclear to what extent, if at all, these changes will have on our Singapore tax incentives. For the majority of our entities, the open tax years for the IRS, state and most foreign audit authorities are from August 1, 2014 through the current tax year. During the third quarter of fiscal 2018, the Company closed the U.S. income tax audit for Ixia for tax years through 2014. For foreign entities, the tax years remain open, at most, back to the year 2007 . Given the number of years and numerous matters that remain subject to examination in various tax jurisdictions, we are unable to estimate the range of possible changes to the balance of our unrecognized tax benefits. The company is being audited in Malaysia for the 2008 tax year. Although this tax year pre-dates our spin-off from Agilent, pursuant to the agreement between Agilent and Keysight pertaining to tax matters, as finalized at the time of separation, for certain entities, including Malaysia, any historical tax liability is the responsibility of Keysight. In the fourth quarter of fiscal 2017, Keysight paid income taxes and penalties of $68 million on gains related to intellectual property rights, although we are currently in the process of appealing to the Special Commissioners of Income Tax in Malaysia. The company believes there are numerous defenses to the current assessment; the statute of limitations for the 2008 tax year in Malaysia was closed, and the income in question is exempt from tax in Malaysia. The company is disputing this assessment and pursuing all avenues to resolve this issue favorably for the company. On December 22, 2017, the U.S. government enacted comprehensive Federal tax legislation commonly known as the Tax Cuts and Jobs Act (the “Tax Act”). The Tax Act includes significant changes to the U.S. corporate income tax system, including but not limited to: the transition of U.S. international taxation from a worldwide tax system to a modified territorial tax system, which will result in a one-time U.S. tax liability on those earnings which have not previously been repatriated to the U.S. (the “Transition Tax”); creation of new minimum taxes such as the Global Intangible Low Taxed Income (“GILTI”) tax and the base erosion anti-abuse tax; a federal corporate income tax rate reduction from 35 percent to 21 percent; and limitations on the deductibility of interest expense and executive compensation. The corporate tax rate reduction is effective as of January 1, 2018. Since the company has a fiscal year rather than a calendar year, it is subject to rules relating to transitional tax rates. As a result, the company’s fiscal year 2018 federal statutory rate will be a blended rate of 23.34 percent . Due to the complexities involved in accounting for the enactment of the Tax Act, the SEC staff has issued Staff Accounting Bulletin 118 (“SAB 118”) directing companies to consider the impact of the Tax Act as “provisional” when they do not have the necessary information available, prepared or analyzed (including computations) in reasonable detail to complete the accounting for the change in tax law. For the amounts which the company was able to reasonably estimate, the company has recognized a provisional discrete income tax benefit of approximately $103 million as of April 30, 2018. The discrete benefit was increased by $6 million for the three months ending July 31, 2018, resulting in a discrete income tax benefit of $109 million for the nine months ending July 31, 2018. The discrete benefit of $109 million is made up of a one-time reduction in net deferred tax liabilities and corresponding income tax benefit of approximately $304 million due to the re-measurement of U.S. income taxes recorded on the undistributed earnings of foreign subsidiaries that were not considered permanently reinvested. This was offset by approximately $190 million of income tax expense and corresponding long-term income tax payable due to the one-time toll charge. The company also estimated a one-time reduction in net deferred tax assets and corresponding income tax expense of approximately $5 million due to the re-measurement of the U.S. deferred tax assets at the lower 21 percent U.S. federal corporate income tax rate. The one-time transition tax is based in part on cash levels on various comparable measurement dates, one of which is our October 31, 2018 fiscal year end. As a result, the company’s estimation and calculation of the transition tax will change until the last measurement date occurs and as federal and state tax authorities provide further guidance. We have not completed our accounting for the income tax effects of certain elements of the Tax Act, including the new GILTI tax. Due to the complexity of these new tax rules, we are continuing to evaluate these provisions of the Tax Act and whether such taxes are recorded as a current-period expense when incurred or whether such amounts should be factored into a company’s measurement of its deferred taxes. As a result, we have not included an estimate of the tax expense/benefit related to these items for the period ended July 31, 2018. We are continuing to evaluate the Tax Act and its requirements, as well as its application to our business and its impact on our effective tax rate. In accordance with SAB 118, the estimated discrete income tax benefit of $109 million represents our best estimate based on interpretation of the Tax Act. We are able to make reasonable estimates of the impact of the deemed repatriation transition tax, the remeasurement of the deferred tax liability recorded on the undistributed earnings of foreign subsidiaries that were not considered reinvested, and the reduction in the U.S. corporate income tax rate. The final impact of the Tax Act may differ from these estimates due to, among other things, changes in our interpretations and assumptions, additional guidance that may be issued by the U.S. Treasury, additional analysis of foreign earnings inherited from acquisitions, and changes to U.S. state conformance to the U.S. federal tax law change. In accordance with SAB 118, the estimated discrete income tax benefit of $109 million is considered provisional and any subsequent adjustment to these amounts will be recorded to tax expense in the quarter in which the analysis is complete, but no later than December 22, 2018.

NET INCOME PER SHARE

NET INCOME PER SHARE	9 Months Ended
	Jul. 31, 2018
Earnings Per Share [Abstract]
NET INCOME PER SHARE	NET INCOME (LOSS) PER SHARE The following is a reconciliation of the numerator and denominator of the basic and diluted net income (loss) per share computations for the periods presented below: Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 (in millions) Numerator: Net income (loss) $ 121 $ (18 ) $ 279 $ 140 Denominator: Basic weighted-average shares 188 186 187 178 Potential common shares— stock options and other employee stock plans 3 — 4 2 Diluted weighted-average shares 191 186 191 180 The dilutive effect of share-based awards is reflected in diluted net income per share by application of the treasury stock method. In the period when we have a net loss, stock awards are excluded from our calculation of net income per share as their inclusion would have an anti-dilutive effect. For the three months ended July 31, 2017, we excluded approximately 6 million shares. We exclude stock options with exercise prices greater than the average market price of our common stock from the calculation of diluted earnings per share because the effect would be anti-dilutive. For the three and nine months ended July 31, 2018 and for the nine months ended July 31, 2017, we excluded no options from the calculation of diluted earnings per share. In addition, we exclude stock options, ESPP shares, LTP Program and restricted stock awards, of which the combined exercise price and unamortized fair value collectively was greater than the average market price of our common stock because the effect would be anti-dilutive. For the three and nine months ended July 31, 2018, we excluded approximately 3,500 shares and 2,200 shares, respectively. For the nine months ended July 31, 2017, we excluded approximately 188,600 shares.

SUPPLEMENT CASH FLOW INFORMATIO

SUPPLEMENT CASH FLOW INFORMATION (Notes)	9 Months Ended
	Jul. 31, 2018
Other Significant Noncash Transactions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	. SUPPLEMENTAL CASH FLOW INFORMATION Net cash paid for income taxes was $22 million and $43 million for the nine months ended July 31, 2018 and 2017, respectively. Cash paid for interest was $41 million and $24 million for the nine months ended July 31, 2018 and 2017, respectively. For the nine months ended July 31, 2017, we also paid fees of $9 million in connection with a bridge loan facility that were amortized to interest expense and classified as financing activity. The following table summarizes our non-cash investing and financing activities that are not reflected in the condensed consolidated statement of cash flows: Nine months ended July 31, 2018 2017 (in millions) Non-cash investing activities Capital expenditures in accounts payable $ 8 $ (5 ) Capital expenditures in other long-term liabilities — 2 $ 8 $ (3 )

INVENTORY

INVENTORY	9 Months Ended
	Jul. 31, 2018
Inventory, Net [Abstract]
INVENTORY	INVENTORY July 31, October 31, (in millions) Finished goods $ 276 $ 286 Purchased parts and fabricated assemblies 333 302 Total inventory $ 609 $ 588 Inventory-related excess and obsolescence charges were $20 million , which includes $6 million due to divestiture-related activity, and $12 million for the nine months ended July 31, 2018 and July 31, 2017, respectively.

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS	9 Months Ended
	Jul. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLE ASSETS	GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill balances and the movements for each of our reportable operating segments as of and for the nine months ended July 31, 2018 were as follows: Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Services Solutions Group Total (in millions) Goodwill as of October 31, 2017 $ 441 $ 240 $ 1,117 $ 84 $ 1,882 Foreign currency translation impact 1 — — — 1 Goodwill arising from acquisitions — — — 6 6 Divestiture — (1 ) — — (1 ) Goodwill as of July 31, 2018 $ 442 $ 239 $ 1,117 $ 90 $ 1,888 Other intangible assets as of July 31, 2018 and October 31, 2017 consisted of the following: Other Intangible Assets as of July 31, 2018 Other Intangible Assets as of October 31, 2017 Gross Carrying Amount Accumulated Amortization and Impairments Net Book Value Gross Carrying Amount Accumulated Amortization and Impairments Net Book Value (in millions) Developed technology $ 829 $ 370 $ 459 $ 808 $ 252 $ 556 Backlog 13 13 — 13 12 1 Trademark/Tradename 33 13 20 33 8 25 Customer relationships 304 90 214 304 61 243 Non-compete agreements 1 — 1 1 — 1 Total amortizable intangible assets 1,180 486 694 1,159 333 826 In-Process R&D 8 — 8 29 — 29 Total $ 1,188 $ 486 $ 702 $ 1,188 $ 333 $ 855 During the nine months ended July 31, 2018 , we recognized additions to goodwill of $6 million due to an acquisition and a $1 million reduction due to divestiture-related activity. During the nine months ended July 31, 2018 , there was no foreign exchange translation impact to other intangible assets. During the nine months ended July 31, 2018, we transferred $21 million from in-process R&D to developed technology as projects were successfully completed. During the nine months ended July 31, 2017, we recorded an impairment charge of $7 million related to the cancellation of an in-process R&D project. Amortization of other intangible assets was $51 million and $153 million for the three and nine months ended July 31, 2018 , respectively. Amortization of other intangible assets was $52 million and $81 million for the three and nine months ended July 31, 2017 , respectively. Future amortization expense related to existing finite-lived purchased intangible assets is estimated to be $50 million for the remainder of 2018, $203 million for 2019, $196 million for 2020, $ 128 million for 2021, $52 million for 2022 and $65 million thereafter. Our Ixia Solutions Group's revenue and earnings have not been consistent with originally projected results primarily as a result of our significant integration efforts. We have resolved the majority of these integration issues and expect our Ixia Solutions Group’s financial performance to recover. We performed an analysis based on information currently available, including, among other aspects, our current business condition, business plans, valuation considerations, and the timing of these factors. As a result of this analysis, we determined that no event-driven quantitative impairment analysis of goodwill was required at July 31, 2018.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	9 Months Ended
	Jul. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS The authoritative guidance defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, we consider the principal or most advantageous market and assumptions that market participants would use when pricing the asset or liability. Fair Value Hierarchy The guidance establishes a fair value hierarchy that prioritizes inputs used in valuation techniques into three levels. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. There are three levels of inputs that may be used to measure fair value: Level 1 - applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities. Level 2 - applies to assets or liabilities for which there are inputs other than quoted prices included within Level 1 that are observable, either directly or indirectly, for the asset or liability such as: quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in less active markets; or other inputs that can be derived principally from, or corroborated by, observable market data. Level 3 - applies to assets or liabilities for which there are unobservable inputs to the valuation methodology that are significant to the measurement of the fair value of the assets or liabilities. Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis Financial assets and liabilities measured at fair value on a recurring basis as of July 31, 2018 and October 31, 2017 were as follows: Fair Value Measurements at July 31, 2018 Fair Value Measurements at October 31, 2017 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 (in millions) Assets: Short-term Cash equivalents Money market funds $ 297 $ 297 $ — $ — $ 403 $ 403 $ — $ — Derivative instruments (foreign exchange contracts) 6 — 6 — 6 — 6 — Long-term Trading securities 13 13 — — 13 13 — — Available-for-sale investments 24 24 — — 34 34 — — Total assets measured at fair value $ 340 $ 334 $ 6 $ — $ 456 $ 450 $ 6 $ — Liabilities: Short-term Derivative instruments (foreign exchange contracts) $ 2 $ — $ 2 $ — $ 1 $ — $ 1 $ — Long-term Deferred compensation liability 13 — 13 — 13 — 13 — Total liabilities measured at fair value $ 15 $ — $ 15 $ — $ 14 $ — $ 14 $ — Our money market funds, trading securities, and available-for-sale investments are generally valued using quoted market prices and, therefore, are classified within Level 1 of the fair value hierarchy. Our deferred compensation liability is classified as Level 2 because the inputs used in the calculations are observable, although the values are not directly based on quoted market prices. Our derivative financial instruments are classified within Level 2 as there is not an active market for each hedge contract, but the inputs used to calculate the value of the instruments are tied to active markets. Trading securities (which are earmarked to pay the deferred compensation liability) and deferred compensation liability are reported at fair value, with gains or losses resulting from changes in fair value recognized currently in earnings. Investments designated as available-for-sale and certain derivative instruments are reported at fair value, with unrealized gains and losses, net of tax, included in accumulated other comprehensive income (loss). Realized gains and losses from the sale of these instruments are recorded in earnings.

DERIVATIVES

DERIVATIVES	9 Months Ended
	Jul. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES	DERIVATIVES We are exposed to foreign currency exchange rate fluctuations and interest rate changes in the normal course of our business. As part of our risk management strategy, we use derivative instruments, primarily forward contracts and purchased options, to hedge economic and/or accounting exposures resulting from changes in foreign currency exchange rates. Cash Flow Hedges We enter into foreign exchange contracts to hedge our forecasted operational cash flow exposures resulting from changes in foreign currency exchange rates. These foreign exchange contracts, carried at fair value, have maturities between one and twelve months. These derivative instruments are designated and qualify as cash flow hedges under the criteria prescribed in the authoritative guidance. Ineffectiveness in the three and nine months ended July 31, 2018 and 2017 was not significant . Other Hedges Additionally, we enter into foreign exchange contracts to hedge monetary assets and liabilities that are denominated in currencies other than the functional currency of our subsidiaries. These foreign exchange contracts are carried at fair value and do not qualify for hedge accounting treatment and are not designated as hedging instruments. Our use of derivative instruments exposes us to credit risk to the extent that the counterparties may be unable to meet the terms of the agreement. We do, however, seek to mitigate such risks by limiting our counterparties to major financial institutions that are selected based on their credit ratings and other factors. We have established policies and procedures for mitigating credit risk that include establishing counterparty credit limits, monitoring credit exposures, and continually assessing the creditworthiness of counterparties. A number of our derivative agreements contain threshold limits to the net liability position with counterparties and are dependent on our corporate credit rating determined by the major credit rating agencies. The counterparties to the derivative instruments may request collateralization, in accordance with derivative agreements, on derivative instruments in net liability positions. The aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a net liability position as of July 31, 2018 was $1 million. The credit-risk-related contingent features underlying these agreements had not been triggered as of July 31, 2018 . There were 142 foreign exchange forward contracts open as of July 31, 2018 that were designated as cash flow hedges. There were 73 foreign exchange forward contracts as of July 31, 2018 that were not designated as hedging instruments. The aggregated notional amounts by currency and designation as of July 31, 2018 were as follows: Derivatives in Cash Flow Hedging Relationships Derivatives Not Designated as Hedging Instruments Forward Contracts Forward Contracts Currency Buy/(Sell) Buy/(Sell) (in millions) Euro $ 12 $ 44 British Pound — (33 ) Singapore Dollar 13 6 Malaysian Ringgit 73 3 Japanese Yen (93 ) (24 ) Other currencies (2 ) 8 Total $ 3 $ 4 Derivative instruments are subject to master netting arrangements and are disclosed gross in the balance sheet in accordance with the authoritative guidance. The gross fair values and balance sheet location of derivative instruments held in the condensed consolidated balance sheet as of July 31, 2018 and October 31, 2017 were as follows: Fair Values of Derivative Instruments Asset Derivatives Liability Derivatives Fair Value Fair Value Balance Sheet Location July 31, October 31, Balance Sheet Location July 31, October 31, (in millions) (in millions) Derivatives designated as hedging instruments: Cash flow hedges Foreign exchange contracts Other current assets $ 5 $ 5 Other accrued liabilities $ 1 $ — Derivatives not designated as hedging instruments: Foreign exchange contracts Other current assets 1 1 Other accrued liabilities 1 1 Total derivatives $ 6 $ 6 $ 2 $ 1 The effect of derivative instruments for foreign exchange contracts designated as hedging instruments and for those not designated as hedging instruments in our condensed consolidated statement of operations was as follows: Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 (in millions) Derivatives designated as hedging instruments: Cash Flow Hedges Foreign exchange contracts: Gain recognized in accumulated other comprehensive income $ 1 $ 1 $ 3 $ 3 Gain (loss) reclassified from accumulated other comprehensive income into cost of products $ 1 $ 1 $ 4 $ (1 ) Derivatives not designated as hedging instruments: Gain recognized in other income (expense), net $ 2 $ 3 $ 3 $ 5 The estimated amount of existing net gain at July 31, 2018 expected to be reclassified from accumulated other comprehensive income to cost of products within the next twelve months is $2 million .

RETIREMENT PLANS AND POST RETIR

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS	9 Months Ended
	Jul. 31, 2018
Defined Benefit Plan [Abstract]
RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS	RETIREMENT PLANS AND POST-RETIREMENT BENEFIT PLANS For the three and nine months ended July 31, 2018 and 2017 , our net pension and post-retirement benefit cost (benefit) were comprised of the following: Pensions U.S. Defined Benefit Plans Non-U.S. Defined Benefit Plans U.S. Post-Retirement Benefit Plan Three Months Ended July 31, 2018 2017 2018 2017 2018 2017 (in millions) Service cost—benefits earned during the period $ 6 $ 6 $ 3 $ 5 $ — $ — Interest cost on benefit obligation 7 5 6 6 2 2 Expected return on plan assets (10 ) (8 ) (21 ) (18 ) (3 ) (3 ) Amortization: Net actuarial loss 3 4 6 8 4 6 Prior service credit (1 ) (2 ) — — (4 ) (4 ) Net periodic benefit cost (benefit) $ 5 $ 5 $ (6 ) $ 1 $ (1 ) $ 1 Pensions U.S. Defined Benefit Plans Non-U.S. Defined Benefit U.S. Post-Retirement Nine Months Ended July 31, 2018 2017 2018 2017 2018 2017 (in millions) Service cost—benefits earned during the period $ 18 $ 17 $ 10 $ 13 $ 1 $ — Interest cost on benefit obligation 19 15 18 17 5 6 Expected return on plan assets (28 ) (25 ) (65 ) (55 ) (10 ) (9 ) Amortization: Net actuarial loss 9 11 19 25 12 17 Prior service credit (5 ) (5 ) — (1 ) (11 ) (12 ) Settlement gain — — — (68 ) — — Net periodic benefit cost (benefit) $ 13 $ 13 $ (18 ) $ (69 ) $ (3 ) $ 2 We contributed $85 million to our U.S. Defined Benefit Plans during the three and nine months ended July 31, 2018 and did not contribute to our U.S. Defined Benefit Plans during the three and nine months ended July 31, 2017. We did not contribute to our U.S. Post-Retirement Benefit Plan during the three and nine months ended July 31, 2018 and 2017 . We contributed $6 million and $22 million to our Non-U.S. Defined Benefit Plans during the three and nine months ended July 31, 2018, respectively, and we contributed $9 million and $24 million to our Non-U.S. Defined Benefit Plans during the three and nine months ended July 31, 2017, respectively. For the remainder of 2018 , we do not expect to contribute to our U.S. Defined Benefit Plans, and we expect to contribute $9 million to our non-U.S. Defined Benefit Plans. On December 15, 2016, we transferred a portion of the assets and obligations of our Japanese Employees’ Pension Fund ("EPF") to the Japanese government. The remaining portion of the EPF was transferred to a new Keysight Japan corporate defined benefit pension plan. The difference between the obligations settled with the government of $142 million and the assets transferred to the government of $51 million resulted in an increase in the funded status of the new defined benefit pension plan of $91 million . The settlement resulted in a gain of $68 million which is included in other operating expense (income) in the consolidated statement of operations. Previously accrued salary progression of $4 million was derecognized at the time of settlement.

WARRANTY, COMMITMENTS AND CONTI

WARRANTY, COMMITMENTS AND CONTINGENCIES	9 Months Ended
	Jul. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
WARRANTY, COMMITMENTS AND CONTINGENCIES	WARRANTY, COMMITMENTS AND CONTINGENCIES Standard Warranty Effective December 1, 2017, the Keysight warranty on products sold through direct sales channel is primarily one year. Warranties for products sold through distribution channels continue to be primarily three years. We accrue for standard warranty costs based on historical trends in warranty charges. The accrual is reviewed regularly and periodically adjusted to reflect changes in warranty cost estimates. Estimated warranty charges are recorded within cost of products at the time related product revenue is recognized. Activity related to the standard warranty accrual, which is included in other accrued and other long-term liabilities in our condensed consolidated balance sheet, is as follows: Nine Months Ended July 31, 2018 2017 (in millions) Beginning balance $ 45 $ 44 Accruals for warranties including change in estimate 28 24 Settlements made during the period (26 ) (23 ) Ending balance $ 47 $ 45 Accruals for warranties due within one year $ 26 $ 24 Accruals for warranties due after one year 21 21 Ending balance $ 47 $ 45 Commitments During the nine months ended July 31, 2018, there were no material changes to the operating and capital lease commitments reported in the company’s 2017 Annual Report on Form 10-K. Contingencies We are involved in lawsuits, claims, investigations and proceedings, including, but not limited to, patent, commercial and environmental matters, which arise in the ordinary course of business. There are no matters pending that we currently believe are reasonably possible of having a material impact to our business, consolidated financial condition, results of operations or cash flows.

DEBT (Notes)

DEBT (Notes)	9 Months Ended
	Jul. 31, 2018
Debt Disclosure [Abstract]
DEBT	DEBT Short-Term Debt Revolving Credit Facility On February 15, 2017 , we entered into an amended and restated credit agreement (the “Revolving Credit Facility”) that replaced our existing $450 million unsecured credit facility dated September 15, 2014. The Revolving Credit Facility provides for a $450 million , five -year unsecured revolving credit facility that will expire on February 15, 2022 and bears interest at an annual rate of LIBOR + 1.30% . In addition, the Revolving Credit Facility permits us to increase the total commitments under this credit facility by up to $150 million in the aggregate on one or more occasions upon request. We may use amounts borrowed under the facility for general corporate purposes. During the nine months ended July 31, 2018, we borrowed and repaid $40 million of borrowings outstanding under the Revolving Credit Facility. As of July 31, 2018, we had no borrowings outstanding under the Revolving Credit Facility. We were in compliance with the covenants of the Revolving Credit Facility during the nine months ended July 31, 2018. Long-Term Debt The following table summarizes the components of our long-term debt: July 31, 2018 October 31, 2017 (in millions) 2019 Senior Notes at 3.30% ($500 face amount less unamortized costs of $1 and $2) $ 499 $ 498 2024 Senior Notes at 4.55% ($600 face amount less unamortized costs of $3 and $4) 597 596 2027 Senior Notes at 4.60% ($700 face amount less unamortized costs of $6 and $6) 694 694 Senior Unsecured Term loan — 260 1,790 2,048 Less: Current portion of long-term debt — 10 Total $ 1,790 $ 2,038 There have been no changes to the principal, maturity, interest rates and interest payment terms of the senior notes during the nine months ended July 31, 2018 as compared to the senior notes described in our Annual Report on Form 10-K for the fiscal year ended October 31, 2017. Senior Unsecured Term Loan On February 15, 2017 , we entered into a term credit agreement that provides for a three -year $400 million senior unsecured term loan that bears interest at an annual rate of LIBOR + 1.50% . The term loan was drawn upon the closing of the Ixia acquisition. On February 27, 2018, we fully repaid borrowings outstanding under the term loan of $260 million and terminated the term credit agreement. As of July 31, 2018 and October 31, 2017, we had $24 million and $26 million , respectively, of outstanding letters of credit unrelated to the credit facility that were issued by various lenders. The fair value of our long-term debt, calculated from quoted prices that are primarily Level 1 inputs under the accounting guidance fair value hierarchy, was above the carrying value by approximately $17 million and $91 million as of July 31, 2018 and October 31, 2017, respectively.

STOCKHOLDERS' EQUITY

STOCKHOLDERS' EQUITY	9 Months Ended
	Jul. 31, 2018
Statement of Comprehensive Income [Abstract]
STOCKHOLDERS EQUITY	STOCKHOLDERS' EQUITY Stock Repurchase Program On March 6, 2018, the Board of Directors approved a new stock repurchase program authorizing the purchase of up to $350 million of the company’s common stock, replacing a previously approved 2016 program authorizing the purchase of up to $200 million of the company’s common stock. Under the new program, shares may be purchased from time to time, subject to general business and market conditions and other investment opportunities, through open market purchases, privately negotiated transactions or other means. All such shares and related costs are held as treasury stock and accounted for at trade date using the cost method. The stock repurchase program may be commenced, suspended or discontinued at any time at the company’s discretion and does not have an expiration date. For the nine months ended July 31, 2018, we repurchased 1,441,610 shares of common stock for $80 million . All such shares and related costs are held as treasury stock and accounted for at trade date using the cost method. Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive loss by component and related tax effects for the three and nine months ended July 31, 2018 and 2017 were as follows: Unrealized gain on equity securities Foreign currency translation Net defined benefit pension cost and post retirement plan costs Unrealized gains (losses) on derivatives Total Actuarial losses Prior service credits (in millions) As of April 30, 2018 $ 12 $ (11 ) $ (447 ) $ 27 $ — $ (419 ) Other comprehensive income (loss) before reclassifications (7 ) (29 ) — — 1 (35 ) Amounts reclassified out of accumulated other comprehensive loss — — 13 (5 ) (1 ) 7 Tax (expense) benefit — — (4 ) 2 — (2 ) Other comprehensive income (loss) (7 ) (29 ) 9 (3 ) — (30 ) As of July 31, 2018 $ 5 $ (40 ) $ (438 ) $ 24 $ — $ (449 ) As of October 31, 2017 $ 14 $ (39 ) $ (468 ) $ 35 $ 1 $ (457 ) Other comprehensive income (loss) before reclassifications (10 ) (1 ) 1 — 3 (7 ) Amounts reclassified out of accumulated other comprehensive loss — — 40 (16 ) (4 ) 20 Tax (expense) benefit 1 — (11 ) 5 — (5 ) Other comprehensive income (loss) (9 ) (1 ) 30 (11 ) (1 ) 8 As of July 31, 2018 $ 5 $ (40 ) $ (438 ) $ 24 $ — $ (449 ) As of April 30, 2017 $ 14 $ (44 ) $ (606 ) $ 42 $ (1 ) $ (595 ) Other comprehensive income (loss) before reclassifications (1 ) 15 — — 1 15 Amounts reclassified out of accumulated other comprehensive loss — — 18 (6 ) (1 ) 11 Tax (expense) benefit 1 — (6 ) 2 — (3 ) Other comprehensive income (loss) — 15 12 (4 ) — 23 As of July 31, 2017 $ 14 $ (29 ) $ (594 ) $ 38 $ (1 ) $ (572 ) As of October 31, 2016 $ 10 $ (29 ) $ (646 ) $ 50 $ (3 ) $ (618 ) Other comprehensive income (loss) before reclassifications 3 — 24 — 3 30 Amounts reclassified out of accumulated other comprehensive loss — — 52 (18 ) 1 35 Tax (expense) benefit 1 — (24 ) 6 (2 ) (19 ) Other comprehensive income (loss) 4 — 52 (12 ) 2 46 As of July 31, 2017 $ 14 $ (29 ) $ (594 ) $ 38 $ (1 ) $ (572 ) Reclassifications out of accumulated other comprehensive loss for the three and nine months ended July 31, 2018 and 2017 were as follows: Details about Accumulated Other Comprehensive Loss Components Amounts Reclassified from Accumulated Other Comprehensive Loss Affected Line Item in Statement of Operations Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 (in millions) Unrealized gain (loss) on derivatives $ 1 $ 1 $ 4 $ (1 ) Cost of products (1 ) — (1 ) 1 Provision for income taxes — 1 3 — Net of income tax Net defined benefit pension cost and post retirement plan costs: Actuarial net loss (13 ) (18 ) (40 ) (52 ) Prior service credits 5 6 16 18 (8 ) (12 ) (24 ) (34 ) Total before income tax 2 4 6 10 Provision for income taxes (6 ) (8 ) (18 ) (24 ) Net of income tax Total reclassifications for the period $ (6 ) $ (7 ) $ (15 ) $ (24 ) An amount in parentheses indicates a reduction to income and an increase to the accumulated other comprehensive loss. Reclassifications of prior service benefit and actuarial net loss in respect of retirement plans and post retirement pension plans are included in the computation of net periodic cost (see Note 12, "Retirement Plans and Post-Retirement Pension Plans").

SEGMENT INFORMATION

SEGMENT INFORMATION	9 Months Ended
	Jul. 31, 2018
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION We provide electronic design and test instruments and systems and related software, software design tools, and related services that are used in the design, development, manufacture, installation, deployment and operation of electronics equipment. Related services include start-up assistance, instrument productivity and application services and instrument calibration and repair. Additionally, we provide test, security and visibility solutions that validate, secure and optimize networks and applications from engineering concept to live deployment. We also offer customization, consulting and optimization services throughout the customer's product life cycle. On April 18, 2017, we completed the acquisition of Ixia, which became our fourth reportable operating segment, the Ixia Solutions Group (“ISG”). As a result, Keysight now has four segments, Communications Solutions Group, Electronic Industrial Solutions Group, Ixia Solutions Group and Services Solutions Group. Our operating segments were determined based primarily on how the chief operating decision maker views and evaluates our operations. Segment operating results are regularly reviewed by the chief operating decision maker to make decisions about resources to be allocated to each segment and to assess performance. Other factors, including market separation and customer specific applications, go-to-market channels, products and services and manufacturing are considered in determining the formation of these operating segments. Descriptions of our four reportable operating segments are as follows: The Communications Solutions Group serves customers spanning the worldwide commercial communications and aerospace, defense and government end markets. The group provides electronic design and test software, instruments, and systems used in the simulation, design, validation, manufacturing, installation and optimization of electronic equipment. The Electronic Industrial Solutions Group provides test and measurement solutions across a broad set of electronic industrial end markets, focusing on high-value applications in the automotive and energy industry and measurement solutions for semiconductor design and manufacturing, consumer electronics, education and general electronics design and manufacturing. The group provides electronic design and test software, instruments, and systems used in the simulation, design, validation, manufacturing, installation and optimization of electronic equipment. The Ixia Solutions Group helps customers validate the performance and security resilience of their networks and associated applications. The test, visibility and security solutions help organizations and their customers strengthen their physical and virtual networks. Enterprises, service providers, network equipment manufacturers, and governments worldwide rely on the group's solutions to validate new products before shipping and secure ongoing operation of their networks with better visibility and security. The group’s solutions consist of high-performance hardware platforms, software applications, and services, including warranty and maintenance offerings. The Services Solutions Group provides repair, calibration and consulting services, and resells used Keysight equipment. In addition to providing repair and calibration support for Keysight equipment, we also calibrate non-Keysight equipment. The group serves the same markets as Keysight’s Communications Solutions and Electronic Industrial Solutions Groups, providing industry-specific services to deliver complete Keysight solutions and help customers reduce their total cost of ownership for their design and test equipment. A significant portion of the segments' expenses, other than the Ixia Solutions Group expenses, arise from shared services and infrastructure that we have historically provided to the segments in order to realize economies of scale and to efficiently optimize resources. These expenses, collectively called corporate charges, include costs of centralized research and development, legal, accounting, real estate, insurance services, information technology services, treasury and other corporate infrastructure expenses. Charges are allocated to the segments, and the allocations have been determined on a basis that we consider to be a reasonable reflection of the utilization of services provided to or benefits received by the segments. The Ixia Solutions Group will not be allocated these shared services and infrastructure charges for the current fiscal year. The following tables reflect the results of our reportable operating segments under our management reporting system. These results are not necessarily in conformity with GAAP. The performance of each segment is measured based on several metrics, including income from operations. These results are used, in part, by the chief operating decision maker in evaluating the performance of, and in allocating resources to, each of the segments. The profitability of each of the segments is measured after excluding share-based compensation expense, restructuring and related costs, amortization of acquisition-related balances, acquisition and integration costs, separation and related costs, pension settlement and curtailment gains, northern California wildfire-related costs, interest income, interest expense and other items as noted in the reconciliations below. Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Services Solutions Group Total Segments (in millions) Three Months Ended July 31, 2018: Total net revenue $ 515 $ 258 $ 115 $ 116 $ 1,004 Amortization of acquisition-related balances — — 4 — 4 Total segment revenue $ 515 $ 258 $ 119 $ 116 $ 1,008 Segment income from operations $ 114 $ 74 $ 10 $ 17 $ 215 Three Months Ended July 31, 2017: Total net revenue $ 418 $ 218 $ 89 $ 107 $ 832 Amortization of acquisition-related balances — — 31 — 31 Total segment revenue $ 418 $ 218 $ 120 $ 107 $ 863 Segment income from operations $ 66 $ 55 $ 24 $ 19 $ 164 Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Services Solutions Group Total Segments (in millions) Nine Months Ended July 31, 2018: Total net revenue $ 1,470 $ 716 $ 305 $ 340 $ 2,831 Amortization of acquisition-related balances 1 — 31 — 32 Total segment revenue $ 1,471 $ 716 $ 336 $ 340 $ 2,863 Segment income from operations $ 299 $ 178 $ 21 $ 52 $ 550 Nine Months Ended July 31, 2017: Total net revenue $ 1,275 $ 630 $ 97 $ 309 $ 2,311 Amortization of acquisition-related balances 1 — 35 — 36 Total segment revenue $ 1,276 $ 630 $ 132 $ 309 $ 2,347 Segment income from operations $ 213 $ 154 $ 22 $ 50 $ 439 The following table reconciles reportable operating segments’ income from operations to our total enterprise income before taxes: Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 (in millions) Total reportable operating segments' income from operations $ 215 $ 164 $ 550 $ 439 Share-based compensation expense (14 ) (13 ) (48 ) (44 ) Restructuring and related costs (3 ) (3 ) (16 ) (6 ) Amortization of acquisition-related balances (56 ) (134 ) (210 ) (170 ) Acquisition and integration costs (6 ) (12 ) (42 ) (39 ) Acquisition-related compensation expense — — — (28 ) Separation and related costs — (4 ) (2 ) (18 ) Pension curtailment and settlement gains — — — 68 Northern California wildfire-related costs — — (7 ) — Other (8 ) (2 ) (2 ) (2 ) Income (loss) from operations, as reported 128 (4 ) 223 200 Interest income 3 2 8 5 Interest expense (20 ) (22 ) (63 ) (58 ) Other income (expense), net 2 (1 ) 5 2 Income (loss) before taxes, as reported $ 113 $ (25 ) $ 173 $ 149 There has been no material change in total assets by segment since October 31, 2017.

NORTHERN CALIFORNIA WILDFIRES I

NORTHERN CALIFORNIA WILDFIRES IMPACT (Notes)	9 Months Ended
	Jul. 31, 2018
Unusual or Infrequent Items, or Both [Abstract]
Unusual or Infrequent Items, or Both, Disclosure [Text Block]	IMPACT OF NORTHERN CALIFORNIA WILDFIRES During the week of October 8, 2017, wildfires in northern California adversely impacted the Keysight corporate headquarters site in Santa Rosa, CA. Our headquarters was under mandatory evacuation for more than three weeks, and while direct damage to our core facilities was limited, our buildings did experience some smoke and other fire-related impacts. Cleaning and restoration efforts are largely complete, and we have fully re-occupied the site. Keysight is insured for the damage caused by the fire. Due to the strong response and execution of our teams, we have recovered from the shipment disruption issues related to the wildfires, and full recovery is expected by the end of the fiscal year. For the three and nine months ended July 31, 2018, we recognized costs of zero and $7 million , respectively, net of estimated insurance recoveries of $21 million and $84 million , respectively. Expenses were primarily for cleaning and other direct costs related to recovery from this event. A summary of the net charges in the consolidated statement of operations resulting from the impact of the fire is shown below: Three Months Ended July 31, 2018 Nine Months Ended July 31, 2018 (in millions) Cost of products and services $ — $ 5 Research and development — 1 Selling, general and administrative — 1 Total $ — $ 7 As of July 31, 2018, we have received insurance proceeds of $60 million and have a receivable of $26 million for losses and expenses for which insurance reimbursement is probable. The receivable is included in other current assets in the condensed consolidated balance sheet. In addition, for the nine months ended July 31, 2018, we made investments in property, plant and equipment related to fire recovery of $18 million , which is expected to be covered by insurance. In many cases, our insurance coverage exceeds the amount of these covered losses, but no gain contingencies have been recognized as our ability to realize those gains remains uncertain for financial reporting purposes. We currently estimate that insurance recovery will range from $115 million to $130 million , which we believe will substantially cover our total fire-related losses, expenses and investments in property, plant and equipment in excess of our $10 million self-insured retention amount. There may be a difference in timing of costs incurred and the related insurance reimbursement.

NEW ACCOUNTING PRONOUNCEMENTS N

NEW ACCOUNTING PRONOUNCEMENTS NEW ACCOUNTING PRONOUNCEMENTS (Tables)	9 Months Ended
	Jul. 31, 2018
Accounting Changes and Error Corrections [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]	We elected to apply the presentation requirements for cash flows related to excess tax benefits and employee taxes paid for withheld shares retrospectively to all periods presented, which resulted in the following change to our previously reported condensed consolidated statement of cash flows for the nine months ended July 31, 2017: Nine Months Ended July 31, 2017 As Originally Reported As Adjusted Change (in millions) Net cash provided by operating activities $ 249 $ 265 $ 16 Net cash provided by financing activities $ 1,482 $ 1,466 $ (16 )

ACQUISITIONS (Tables)

ACQUISITIONS (Tables)	9 Months Ended
	Jul. 31, 2018
Business Combination [Abstract]
Business Acquisition, Pro Forma Information [Table Text Block]	The following represents pro forma operating results as if Ixia had been included in the company's condensed consolidated statements of operations as of the beginning of fiscal 2017. Pro forma results of operations for ScienLab have not been presented because the effects of the acquisition were not material to the company’s financial results. Nine Months Ended in millions, except per share amounts July 31, 2017 Net revenue $ 2,560 Net income $ 143 Net income per share - Basic $ 0.77 Net income per share - Diluted $ 0.76

SHARE-BASED COMPENSATION (Table

SHARE-BASED COMPENSATION (Tables)	9 Months Ended
	Jul. 31, 2018
Share-based Compensation [Abstract]
Allocated Share-based compensation expense disclosure	The impact of share-based compensation on our results was as follows: Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 (in millions) Cost of products and services $ 2 $ 3 $ 9 $ 9 Research and development 2 1 8 7 Selling, general and administrative 10 9 31 28 Total share-based compensation expense $ 14 $ 13 $ 48 $ 44
Share-based compensation arrangement by share-based payment award fair value assumptions and methodology schedule	The following assumptions were used to estimate the fair value of LTP Program grants: Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 LTP Program: Volatility of Keysight shares 25 % 26 % 25 % 27 % Volatility of selected index 14 % 15 % 14 % 15 % Price-wise correlation with selected peers 57 % 57 % 57 % 57 %

NET INCOME PER SHARE (Tables)

NET INCOME PER SHARE (Tables)	9 Months Ended
	Jul. 31, 2018
Earnings Per Share [Abstract]
Reconciliation of the numerators and denominators of the basic and diluted net income per share	The following is a reconciliation of the numerator and denominator of the basic and diluted net income (loss) per share computations for the periods presented below: Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 (in millions) Numerator: Net income (loss) $ 121 $ (18 ) $ 279 $ 140 Denominator: Basic weighted-average shares 188 186 187 178 Potential common shares— stock options and other employee stock plans 3 — 4 2 Diluted weighted-average shares 191 186 191 180

SUPPLEMENT CASH FLOW INFORMAT29

SUPPLEMENT CASH FLOW INFORMATION (Tables)	9 Months Ended
	Jul. 31, 2018
Other Significant Noncash Transactions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Nine months ended July 31, 2018 2017 (in millions) Non-cash investing activities Capital expenditures in accounts payable $ 8 $ (5 ) Capital expenditures in other long-term liabilities — 2 $ 8 $ (3 )

INVENTORY (Tables)

INVENTORY (Tables)	9 Months Ended
	Jul. 31, 2018
Inventory, Net [Abstract]
INVENTORY	July 31, October 31, (in millions) Finished goods $ 276 $ 286 Purchased parts and fabricated assemblies 333 302 Total inventory $ 609 $ 588 Inventory-related excess and obsolescence charges were $20 million , which includes $6 million due to divestiture-related activity, and $12 million for the nine months ended July 31, 2018 and July 31, 2017, respectively.

GOODWILL AND OTHER INTANGIBLE31

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	9 Months Ended
	Jul. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill balances and movements for each reportable segments during the period	Goodwill balances and the movements for each of our reportable operating segments as of and for the nine months ended July 31, 2018 were as follows: Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Services Solutions Group Total (in millions) Goodwill as of October 31, 2017 $ 441 $ 240 $ 1,117 $ 84 $ 1,882 Foreign currency translation impact 1 — — — 1 Goodwill arising from acquisitions — — — 6 6 Divestiture — (1 ) — — (1 ) Goodwill as of July 31, 2018 $ 442 $ 239 $ 1,117 $ 90 $ 1,888
Components of other intangibles during the period	Other intangible assets as of July 31, 2018 and October 31, 2017 consisted of the following: Other Intangible Assets as of July 31, 2018 Other Intangible Assets as of October 31, 2017 Gross Carrying Amount Accumulated Amortization and Impairments Net Book Value Gross Carrying Amount Accumulated Amortization and Impairments Net Book Value (in millions) Developed technology $ 829 $ 370 $ 459 $ 808 $ 252 $ 556 Backlog 13 13 — 13 12 1 Trademark/Tradename 33 13 20 33 8 25 Customer relationships 304 90 214 304 61 243 Non-compete agreements 1 — 1 1 — 1 Total amortizable intangible assets 1,180 486 694 1,159 333 826 In-Process R&D 8 — 8 29 — 29 Total $ 1,188 $ 486 $ 702 $ 1,188 $ 333 $ 855

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	9 Months Ended
	Jul. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Assets And Liabilities Measured On Recurring Basis	Financial assets and liabilities measured at fair value on a recurring basis as of July 31, 2018 and October 31, 2017 were as follows: Fair Value Measurements at July 31, 2018 Fair Value Measurements at October 31, 2017 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 (in millions) Assets: Short-term Cash equivalents Money market funds $ 297 $ 297 $ — $ — $ 403 $ 403 $ — $ — Derivative instruments (foreign exchange contracts) 6 — 6 — 6 — 6 — Long-term Trading securities 13 13 — — 13 13 — — Available-for-sale investments 24 24 — — 34 34 — — Total assets measured at fair value $ 340 $ 334 $ 6 $ — $ 456 $ 450 $ 6 $ — Liabilities: Short-term Derivative instruments (foreign exchange contracts) $ 2 $ — $ 2 $ — $ 1 $ — $ 1 $ — Long-term Deferred compensation liability 13 — 13 — 13 — 13 — Total liabilities measured at fair value $ 15 $ — $ 15 $ — $ 14 $ — $ 14 $ —

DERIVATIVES (Tables)

DERIVATIVES (Tables)	9 Months Ended
	Jul. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Aggregated notional amounts by currency and designation	The aggregated notional amounts by currency and designation as of July 31, 2018 were as follows: Derivatives in Cash Flow Hedging Relationships Derivatives Not Designated as Hedging Instruments Forward Contracts Forward Contracts Currency Buy/(Sell) Buy/(Sell) (in millions) Euro $ 12 $ 44 British Pound — (33 ) Singapore Dollar 13 6 Malaysian Ringgit 73 3 Japanese Yen (93 ) (24 ) Other currencies (2 ) 8 Total $ 3 $ 4
Gross fair values and balance sheet location of derivative instruments held in the consolidated balance sheet	Derivative instruments are subject to master netting arrangements and are disclosed gross in the balance sheet in accordance with the authoritative guidance. The gross fair values and balance sheet location of derivative instruments held in the condensed consolidated balance sheet as of July 31, 2018 and October 31, 2017 were as follows: Fair Values of Derivative Instruments Asset Derivatives Liability Derivatives Fair Value Fair Value Balance Sheet Location July 31, October 31, Balance Sheet Location July 31, October 31, (in millions) (in millions) Derivatives designated as hedging instruments: Cash flow hedges Foreign exchange contracts Other current assets $ 5 $ 5 Other accrued liabilities $ 1 $ — Derivatives not designated as hedging instruments: Foreign exchange contracts Other current assets 1 1 Other accrued liabilities 1 1 Total derivatives $ 6 $ 6 $ 2 $ 1
Effect of derivative instruments for foreign exchange contracts in the consolidated statement of operations	The effect of derivative instruments for foreign exchange contracts designated as hedging instruments and for those not designated as hedging instruments in our condensed consolidated statement of operations was as follows: Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 (in millions) Derivatives designated as hedging instruments: Cash Flow Hedges Foreign exchange contracts: Gain recognized in accumulated other comprehensive income $ 1 $ 1 $ 3 $ 3 Gain (loss) reclassified from accumulated other comprehensive income into cost of products $ 1 $ 1 $ 4 $ (1 ) Derivatives not designated as hedging instruments: Gain recognized in other income (expense), net $ 2 $ 3 $ 3 $ 5

RETIREMENT PLANS AND POST RET34

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Tables)	9 Months Ended
	Jul. 31, 2018
Defined Benefit Plan [Abstract]
Schedule of net pension and post-retirement benefit costs	Pensions U.S. Defined Benefit Plans Non-U.S. Defined Benefit U.S. Post-Retirement Nine Months Ended July 31, 2018 2017 2018 2017 2018 2017 (in millions) Service cost—benefits earned during the period $ 18 $ 17 $ 10 $ 13 $ 1 $ — Interest cost on benefit obligation 19 15 18 17 5 6 Expected return on plan assets (28 ) (25 ) (65 ) (55 ) (10 ) (9 ) Amortization: Net actuarial loss 9 11 19 25 12 17 Prior service credit (5 ) (5 ) — (1 ) (11 ) (12 ) Settlement gain — — — (68 ) — — Net periodic benefit cost (benefit) $ 13 $ 13 $ (18 ) $ (69 ) $ (3 ) $ 2 For the three and nine months ended July 31, 2018 and 2017 , our net pension and post-retirement benefit cost (benefit) were comprised of the following: Pensions U.S. Defined Benefit Plans Non-U.S. Defined Benefit Plans U.S. Post-Retirement Benefit Plan Three Months Ended July 31, 2018 2017 2018 2017 2018 2017 (in millions) Service cost—benefits earned during the period $ 6 $ 6 $ 3 $ 5 $ — $ — Interest cost on benefit obligation 7 5 6 6 2 2 Expected return on plan assets (10 ) (8 ) (21 ) (18 ) (3 ) (3 ) Amortization: Net actuarial loss 3 4 6 8 4 6 Prior service credit (1 ) (2 ) — — (4 ) (4 ) Net periodic benefit cost (benefit) $ 5 $ 5 $ (6 ) $ 1 $ (1 ) $ 1 Pensions U.S. Defined Benefit Plans Non-U.S. Defined Benefit U.S. Post-Retirement Nine Months Ended July 31, 2018 2017 2018 2017 2018 2017 (in millions) Service cost—benefits earned during the period $ 18 $ 17 $ 10 $ 13 $ 1 $ — Interest cost on benefit obligation 19 15 18 17 5 6 Expected return on plan assets (28 ) (25 ) (65 ) (55 ) (10 ) (9 ) Amortization: Net actuarial loss 9 11 19 25 12 17 Prior service credit (5 ) (5 ) — (1 ) (11 ) (12 ) Settlement gain — — — (68 ) — — Net periodic benefit cost (benefit) $ 13 $ 13 $ (18 ) $ (69 ) $ (3 ) $ 2

WARRANTY, COMMITMENTS AND CON35

WARRANTY, COMMITMENTS AND CONTINGENCIES (Tables)	9 Months Ended
	Jul. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Standard warranty	Activity related to the standard warranty accrual, which is included in other accrued and other long-term liabilities in our condensed consolidated balance sheet, is as follows: Nine Months Ended July 31, 2018 2017 (in millions) Beginning balance $ 45 $ 44 Accruals for warranties including change in estimate 28 24 Settlements made during the period (26 ) (23 ) Ending balance $ 47 $ 45 Accruals for warranties due within one year $ 26 $ 24 Accruals for warranties due after one year 21 21 Ending balance $ 47 $ 45

DEBT (Tables)

DEBT (Tables)	9 Months Ended
	Jul. 31, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The following table summarizes the components of our long-term debt: July 31, 2018 October 31, 2017 (in millions) 2019 Senior Notes at 3.30% ($500 face amount less unamortized costs of $1 and $2) $ 499 $ 498 2024 Senior Notes at 4.55% ($600 face amount less unamortized costs of $3 and $4) 597 596 2027 Senior Notes at 4.60% ($700 face amount less unamortized costs of $6 and $6) 694 694 Senior Unsecured Term loan — 260 1,790 2,048 Less: Current portion of long-term debt — 10 Total $ 1,790 $ 2,038

STOCKHOLDERS' EQUITY (Tables)

STOCKHOLDERS' EQUITY (Tables)	9 Months Ended
	Jul. 31, 2018
Statement of Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive loss by component and related tax effects for the three and nine months ended July 31, 2018 and 2017 were as follows: Unrealized gain on equity securities Foreign currency translation Net defined benefit pension cost and post retirement plan costs Unrealized gains (losses) on derivatives Total Actuarial losses Prior service credits (in millions) As of April 30, 2018 $ 12 $ (11 ) $ (447 ) $ 27 $ — $ (419 ) Other comprehensive income (loss) before reclassifications (7 ) (29 ) — — 1 (35 ) Amounts reclassified out of accumulated other comprehensive loss — — 13 (5 ) (1 ) 7 Tax (expense) benefit — — (4 ) 2 — (2 ) Other comprehensive income (loss) (7 ) (29 ) 9 (3 ) — (30 ) As of July 31, 2018 $ 5 $ (40 ) $ (438 ) $ 24 $ — $ (449 ) As of October 31, 2017 $ 14 $ (39 ) $ (468 ) $ 35 $ 1 $ (457 ) Other comprehensive income (loss) before reclassifications (10 ) (1 ) 1 — 3 (7 ) Amounts reclassified out of accumulated other comprehensive loss — — 40 (16 ) (4 ) 20 Tax (expense) benefit 1 — (11 ) 5 — (5 ) Other comprehensive income (loss) (9 ) (1 ) 30 (11 ) (1 ) 8 As of July 31, 2018 $ 5 $ (40 ) $ (438 ) $ 24 $ — $ (449 ) As of April 30, 2017 $ 14 $ (44 ) $ (606 ) $ 42 $ (1 ) $ (595 ) Other comprehensive income (loss) before reclassifications (1 ) 15 — — 1 15 Amounts reclassified out of accumulated other comprehensive loss — — 18 (6 ) (1 ) 11 Tax (expense) benefit 1 — (6 ) 2 — (3 ) Other comprehensive income (loss) — 15 12 (4 ) — 23 As of July 31, 2017 $ 14 $ (29 ) $ (594 ) $ 38 $ (1 ) $ (572 ) As of October 31, 2016 $ 10 $ (29 ) $ (646 ) $ 50 $ (3 ) $ (618 ) Other comprehensive income (loss) before reclassifications 3 — 24 — 3 30 Amounts reclassified out of accumulated other comprehensive loss — — 52 (18 ) 1 35 Tax (expense) benefit 1 — (24 ) 6 (2 ) (19 ) Other comprehensive income (loss) 4 — 52 (12 ) 2 46 As of July 31, 2017 $ 14 $ (29 ) $ (594 ) $ 38 $ (1 ) $ (572 )
Reclassification out of Accumulated Other Comprehensive Income	Reclassifications out of accumulated other comprehensive loss for the three and nine months ended July 31, 2018 and 2017 were as follows: Details about Accumulated Other Comprehensive Loss Components Amounts Reclassified from Accumulated Other Comprehensive Loss Affected Line Item in Statement of Operations Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 (in millions) Unrealized gain (loss) on derivatives $ 1 $ 1 $ 4 $ (1 ) Cost of products (1 ) — (1 ) 1 Provision for income taxes — 1 3 — Net of income tax Net defined benefit pension cost and post retirement plan costs: Actuarial net loss (13 ) (18 ) (40 ) (52 ) Prior service credits 5 6 16 18 (8 ) (12 ) (24 ) (34 ) Total before income tax 2 4 6 10 Provision for income taxes (6 ) (8 ) (18 ) (24 ) Net of income tax Total reclassifications for the period $ (6 ) $ (7 ) $ (15 ) $ (24 )

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	9 Months Ended
	Jul. 31, 2018
Segment Reporting [Abstract]
Segment Reporting, Description of All Other Segments	Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Services Solutions Group Total Segments (in millions) Three Months Ended July 31, 2018: Total net revenue $ 515 $ 258 $ 115 $ 116 $ 1,004 Amortization of acquisition-related balances — — 4 — 4 Total segment revenue $ 515 $ 258 $ 119 $ 116 $ 1,008 Segment income from operations $ 114 $ 74 $ 10 $ 17 $ 215 Three Months Ended July 31, 2017: Total net revenue $ 418 $ 218 $ 89 $ 107 $ 832 Amortization of acquisition-related balances — — 31 — 31 Total segment revenue $ 418 $ 218 $ 120 $ 107 $ 863 Segment income from operations $ 66 $ 55 $ 24 $ 19 $ 164 Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Services Solutions Group Total Segments (in millions) Nine Months Ended July 31, 2018: Total net revenue $ 1,470 $ 716 $ 305 $ 340 $ 2,831 Amortization of acquisition-related balances 1 — 31 — 32 Total segment revenue $ 1,471 $ 716 $ 336 $ 340 $ 2,863 Segment income from operations $ 299 $ 178 $ 21 $ 52 $ 550 Nine Months Ended July 31, 2017: Total net revenue $ 1,275 $ 630 $ 97 $ 309 $ 2,311 Amortization of acquisition-related balances 1 — 35 — 36 Total segment revenue $ 1,276 $ 630 $ 132 $ 309 $ 2,347 Segment income from operations $ 213 $ 154 $ 22 $ 50 $ 439

SEGMENT INFORMATION Segment Pro

SEGMENT INFORMATION Segment Profitability (Tables)	9 Months Ended
	Jul. 31, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	The following table reconciles reportable operating segments’ income from operations to our total enterprise income before taxes: Three Months Ended Nine Months Ended July 31, July 31, 2018 2017 2018 2017 (in millions) Total reportable operating segments' income from operations $ 215 $ 164 $ 550 $ 439 Share-based compensation expense (14 ) (13 ) (48 ) (44 ) Restructuring and related costs (3 ) (3 ) (16 ) (6 ) Amortization of acquisition-related balances (56 ) (134 ) (210 ) (170 ) Acquisition and integration costs (6 ) (12 ) (42 ) (39 ) Acquisition-related compensation expense — — — (28 ) Separation and related costs — (4 ) (2 ) (18 ) Pension curtailment and settlement gains — — — 68 Northern California wildfire-related costs — — (7 ) — Other (8 ) (2 ) (2 ) (2 ) Income (loss) from operations, as reported 128 (4 ) 223 200 Interest income 3 2 8 5 Interest expense (20 ) (22 ) (63 ) (58 ) Other income (expense), net 2 (1 ) 5 2 Income (loss) before taxes, as reported $ 113 $ (25 ) $ 173 $ 149

NORTHERN CALIFORNIA WILDFIRES40

NORTHERN CALIFORNIA WILDFIRES IMPACT (Tables)	9 Months Ended
	Jul. 31, 2018
Unusual or Infrequent Item, or Both [Line Items]
Schedule of Unusual or Infrequent Items, or Both [Table Text Block]	A summary of the net charges in the consolidated statement of operations resulting from the impact of the fire is shown below: Three Months Ended July 31, 2018 Nine Months Ended July 31, 2018 (in millions) Cost of products and services $ — $ 5 Research and development — 1 Selling, general and administrative — 1 Total $ — $ 7

OVERVIEW, BASIS OF PRESENTATI41

OVERVIEW, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Land Sale (Details) £ in Millions, $ in Millions	9 Months Ended
	Jul. 31, 2018USD ($)	Jul. 31, 2017USD ($)	Apr. 30, 2014GBP (£)
Property, Plant and Equipment [Line Items]
Document Period End Date	Jul. 31, 2018
Date of Land Sale Agreeement	Apr. 30, 2014
Binding contract to sell land | £			£ 21
Gain (Loss) on Disposition of Assets | $	$ 8	$ 8

OVERVIEW, BASIS OF PRESENTATI42

OVERVIEW, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Restricted Cash (Details) - USD ($) $ in Millions	Jul. 31, 2018	Oct. 31, 2017
Other Assets [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash and Cash Equivalents	$ 2	$ 2

NEW ACCOUNTING PRONOUNCEMENTS A

NEW ACCOUNTING PRONOUNCEMENTS ASU 2016-09 ADOPTION - Adjustments in Cash flow (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Net Cash Provided by (Used in) Operating Activities	$ 320	$ 265
Net Cash Provided by (Used in) Financing Activities	$ (296)	1,466
Scenario, Previously Reported [Member]
Net Cash Provided by (Used in) Operating Activities		249
Net Cash Provided by (Used in) Financing Activities		1,482
Restatement Adjustment [Member]
Net Cash Provided by (Used in) Operating Activities		16
Net Cash Provided by (Used in) Financing Activities		$ (16)

NEW ACCOUNTING PRONOUNCEMENTS44

NEW ACCOUNTING PRONOUNCEMENTS ASU 2016-09 ADOPTION - textuals (Details) $ in Millions	9 Months Ended
	Jul. 31, 2018USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Excess Tax Benefit from Share-based Compensation, Financing Activities	$ 4
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 6

ACQUISITIONS Proforma financial

ACQUISITIONS Proforma financial information (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Business Combinations [Abstract]
Business Acquisition, Pro Forma Information, Description	The unaudited pro forma financial information for the nine months ended July 31, 2017 combines the historical results of Keysight and Ixia for the nine months ended July 31, 2017, assuming that the companies were combined as of November 1, 2016 and include business combination accounting effects from the acquisition including amortization and depreciation charges from acquired intangible assets, property plant and equipment, interest expense on the financing transactions used to fund the acquisition and acquisition-related transaction costs and tax-related effects. The pro forma information as presented above is for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place at the beginning of fiscal 2017.
Business Acquisition, Pro Forma Revenue		$ 2,560
Business Acquisition, Pro Forma Net Income (Loss)		$ 143
Business Acquisition, Pro Forma Earnings Per Share, Basic		$ 0.77
Business Acquisition, Pro Forma Earnings Per Share, Diluted		$ 0.76

SHARE-BASED COMPENSATION Alloca

SHARE-BASED COMPENSATION Allocated Share-based compensation expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 14	$ 13	$ 48	$ 44
Share-based Compensation Capitalized within inventory	0	0
Cost of products and services
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	2	3	9	9
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	2	1	8	7
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 10	$ 9	$ 31	$ 28

SHARE-BASED COMPENSATION Fair V

SHARE-BASED COMPENSATION Fair Value Assumptions (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	0	0	0
LTPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used			Awards based on TSR were valued using a Monte Carlo simulation model, and awards based on financial metrics were valued based on the market price of Keysight’s common stock on the date of grant.
Volatility of Keysight shares (in hundredths)	25.00%	26.00%	25.00%	27.00%
Volatility of selected index	14.00%	15.00%	14.00%	15.00%
Price-wise correlation with selected peers (in hundredths)	57.00%	57.00%	57.00%	57.00%
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used			The estimated fair value of restricted stock awards is determined based on the market price of Keysight’s common stock on the date of grant.

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Apr. 30, 2018	Jul. 31, 2018	Jul. 31, 2017
Income Tax Examination [Line Items]
Income Tax Expense (Benefit)	$ (8)	$ (7)		$ (106)	$ 9
Income Tax Holiday, Description				Keysight benefits from tax incentives in several jurisdictions, most significantly in Singapore, that 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.
Certain foreign entities [Member]
Income Tax Examination [Line Items]
Open Tax Year				2,007
Malaysia Tax Authority [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Description				The company is being audited in Malaysia for the 2008 tax year. Although this tax year pre-dates our spin-off from Agilent, pursuant to the agreement between Agilent and Keysight pertaining to tax matters, as finalized at the time of separation, for certain entities including Malaysia, any historical tax liability is the responsibility of Keysight. In the fourth quarter of fiscal 2017, Keysight paid income taxes and penalties of $68 million on gains related to intellectual property rights, although we are currently in the process of appealing to the Special Commissioners of Income Tax (“SCIT”) in Malaysia. The company believes there are numerous defenses to the current assessment; the statute of limitations for the 2008 tax year in Malaysia was closed and the income in question is exempt from tax in Malaysia. The company is disputing this assessment and pursuing all avenues to resolve this issue favorably for the company.
Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Effective Income Tax Rate, Percent	(7.00%)	(24.40%)		(61.30%)	6.50%
Income Tax Expense (Benefit)	$ (8)	$ (7)		$ (106)	$ 9
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount			$ 103	109
Net Discrete Tax expense (Benefit)	$ (12)	$ (33)		$ (116)	$ (2)

INCOME TAXES Income taxes textu

INCOME TAXES Income taxes textuals (Details)	9 Months Ended
	Jul. 31, 2018
Income Tax Examination [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	23.34%

NET INCOME PER SHARE NET INCOME

NET INCOME PER SHARE NET INCOME PER SHARE - COMPUTATIONS (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Numerator:
Net income (loss)	$ 121	$ (18)	$ 279	$ 140
Denominators:
Basic weighted-average shares	188	186	187	178
Potential common shares— stock options and other employee stock plans	3	0	4	2
Diluted weighted-average shares	191	186	191	180

NET INCOME PER SHARE (Details)

NET INCOME PER SHARE (Details) - shares	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Stock Options [Member]
Antidilutive Securities Excluded from EPS Computation
Antidilutive Securities Excluded from Computation of Earnings Per Share, Number	0	0	0	0
Stock Options, ESPP, LTPP and restricted stock combined exercise price, unamortized fair value, excess tax benefits or shortfalls greater than average market price [Member] [Member]
Antidilutive Securities Excluded from EPS Computation
Antidilutive Securities Excluded from Computation of Earnings Per Share, Number	3,500		2,200	188,600

SUPPLEMENT CASH FLOW INFORMAT52

SUPPLEMENT CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Other Significant Noncash Transactions [Line Items]
Capital expenditures in accounts payable	$ (8)	$ 3
Debt Issuance Costs amortized to interest and classified as financing	9
Accounts Payable [Member]
Other Significant Noncash Transactions [Line Items]
Capital expenditures in accounts payable	(8)	5
Other Noncurrent Liabilities [Member]
Other Significant Noncash Transactions [Line Items]
Capital expenditures in accounts payable	$ 0	$ (2)

SUPPLEMENT CASH FLOW INFORMAT53

SUPPLEMENT CASH FLOW INFORMATION Income Taxes (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Income Taxes Paid, Net [Abstract]
Income Taxes Paid, Net	$ 22	$ 43

SUPPLEMENT CASH FLOW INFORMAT54

SUPPLEMENT CASH FLOW INFORMATION Interest paid (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest	$ 41	$ 24

INVENTORY (Details)

INVENTORY (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Oct. 31, 2017
Inventory [Line Items]
Excess and obsolete inventory-related charges	$ 20	$ 12
Finished goods	276		$ 286
Purchased parts and fabricated assemblies	333		302
Total inventory	609		$ 588
Divestiture
Inventory [Line Items]
Excess and obsolete inventory-related charges	$ 6

GOODWILL AND OTHER INTANGIBLE56

GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill Roll forward (Details) $ in Millions	9 Months Ended
	Jul. 31, 2018USD ($)
Goodwill [Roll Forward]
Goodwill as of October 31, 2017	$ 1,882
Foreign currency translation impact	1
Goodwill arising from acquisitions	6
Divestiture	(1)
Goodwill as of July 31, 2018	1,888
Communications Solutions Group [Member]
Goodwill [Roll Forward]
Goodwill as of October 31, 2017	441
Foreign currency translation impact	1
Goodwill arising from acquisitions	0
Divestiture	0
Goodwill as of July 31, 2018	442
Electronic Industrial Solutions Group [Member]
Goodwill [Roll Forward]
Goodwill as of October 31, 2017	240
Foreign currency translation impact	0
Goodwill arising from acquisitions	0
Divestiture	(1)
Goodwill as of July 31, 2018	239
Ixia Solutions Group [Member]
Goodwill [Roll Forward]
Goodwill as of October 31, 2017	1,117
Foreign currency translation impact	0
Goodwill arising from acquisitions	0
Divestiture	0
Goodwill as of July 31, 2018	1,117
Services Solutions Group [Member]
Goodwill [Roll Forward]
Goodwill as of October 31, 2017	84
Foreign currency translation impact	0
Goodwill arising from acquisitions	6
Divestiture	0
Goodwill as of July 31, 2018	$ 90

GOODWILL AND OTHER INTANGIBLE57

GOODWILL AND OTHER INTANGIBLE ASSETS Disclosures and Components of Purchased Other Intangibles (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Oct. 31, 2017
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	$ 1,180		$ 1,159
Accumulated Amortization and impairments	486		333
Amortizable intangible assets, Net book value	694		826
In-Process R&D	8		29
Asset impairment	0	$ 7
Intangible Assets, Gross (Excluding Goodwill)	1,188		1,188
Intangible Assets, Net (Excluding Goodwill)	702		855
Developed technology
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	829		808
Accumulated Amortization and impairments	370		252
Intangible Assets, Net (Excluding Goodwill)	459		556
Backlog
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	13		13
Accumulated Amortization and impairments	13		12
Intangible Assets, Net (Excluding Goodwill)	0		1
Trademark/Tradename
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	33		33
Accumulated Amortization and impairments	13		8
Intangible Assets, Net (Excluding Goodwill)	20		25
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	304		304
Accumulated Amortization and impairments	90		61
Intangible Assets, Net (Excluding Goodwill)	214		243
Noncompete Agreements [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	1		1
Accumulated Amortization and impairments	0		0
Intangible Assets, Net (Excluding Goodwill)	$ 1		$ 1

GOODWILL AND OTHER INTANGIBLE58

GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS Textuals (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Goodwill [Line Items]
Document Period End Date			Jul. 31, 2018
Goodwill arising from acquisitions and other adjustments			$ 6
Divestiture			1
Additions to other intangible assets			0
Transfer from In-process IPR&D to Developed technology			21
In-process R&D impairment charge			7
Amortization of intangible assets	$ 51	$ 52	$ 153	$ 81

GOODWILL AND OTHER INTANGIBLE59

GOODWILL AND OTHER INTANGIBLE ASSETS Finite-Lived Assets Future Amortization Expense (Details) $ in Millions	Jul. 31, 2018USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Remainder of 2018	$ 50
Finite-Lived Intangible Assets, Amortization Expense, 2019	203
Finite-Lived Intangible Assets, Amortization Expense, 2020	196
Finite-Lived Intangible Assets, Amortization Expense, 2021	128
Finite-Lived Intangible Assets, Amortization Expense, 2022	52
Finite-Lived Intangible Assets, Amortization Expense, 2023 and thereafter	$ 65

FAIR VALUE MEASUREMENTS, Fair v

FAIR VALUE MEASUREMENTS, Fair value of assets and liabilities measured on a recurring basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Jul. 31, 2018	Oct. 31, 2017
Assets Short - term [Abstract]
Derivative instruments (foreign exchange contracts)	$ 6	$ 6
Assets, Long-term [Abstract]
Trading securities	13	13
Available-for-sale investments	24	34
Total assets measured at fair value	340	456
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	2	1
Liabilities Long-term [Abstract]
Deferred compensation liability	13	13
Total liabilities measured at fair value	15	14
Level 1
Assets Short - term [Abstract]
Derivative instruments (foreign exchange contracts)	0	0
Assets, Long-term [Abstract]
Trading securities	13	13
Available-for-sale investments	24	34
Total assets measured at fair value	334	450
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	0	0
Liabilities Long-term [Abstract]
Deferred compensation liability	0	0
Total liabilities measured at fair value	0	0
Level 2
Assets Short - term [Abstract]
Derivative instruments (foreign exchange contracts)	6	6
Assets, Long-term [Abstract]
Trading securities	0	0
Available-for-sale investments	0	0
Total assets measured at fair value	6	6
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	2	1
Liabilities Long-term [Abstract]
Deferred compensation liability	13	13
Total liabilities measured at fair value	15	14
Level 3
Assets Short - term [Abstract]
Derivative instruments (foreign exchange contracts)	0	0
Assets, Long-term [Abstract]
Trading securities	0	0
Available-for-sale investments	0	0
Total assets measured at fair value	0	0
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	0	0
Liabilities Long-term [Abstract]
Deferred compensation liability	0	0
Total liabilities measured at fair value	0	0
Money Market Funds [Member]
Assets Short - term [Abstract]
Cash equivalents	297	403
Money Market Funds [Member] | Level 1
Assets Short - term [Abstract]
Cash equivalents	297	403
Money Market Funds [Member] | Level 2
Assets Short - term [Abstract]
Cash equivalents	0	0
Money Market Funds [Member] | Level 3
Assets Short - term [Abstract]
Cash equivalents	$ 0	$ 0

DERIVATIVES, Disclosures and de

DERIVATIVES, Disclosures and derivative instrument aggregated notional amounts by currency and designations (Details) $ in Millions	9 Months Ended
	Jul. 31, 2018USD ($)contracts
Derivative [Line Items]
Cash Flow Hedge Ineffectiveness is Immaterial	not significant
Foreign Exchange Forward [Member] | Cash Flow Hedging
Derivative [Line Items]
Number of Foreign Currency Derivatives Held | contracts	142
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Number of Foreign Currency Derivatives Held | contracts	73
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Sell | British Pound
Derivative [Line Items]
Total notional amount	$ 33
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Sell | Japanese Yen
Derivative [Line Items]
Total notional amount	24
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Buy
Derivative [Line Items]
Total notional amount	4
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Buy | Euro
Derivative [Line Items]
Total notional amount	44
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Buy | Singapore Dollar
Derivative [Line Items]
Total notional amount	6
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Buy | Malaysian Ringgit
Derivative [Line Items]
Total notional amount	3
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Buy | Other Currency [Member]
Derivative [Line Items]
Total notional amount	8
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Sell | Japanese Yen | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	93
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Sell | Other Currency [Member] | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	2
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Buy | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	3
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Buy | Euro | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	12
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Buy | British Pound | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	0
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Buy | Singapore Dollar | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	13
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Buy | Malaysian Ringgit | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	$ 73

DERIVATIVES, Fair value of deri

DERIVATIVES, Fair value of derivative instruments and Consolidated Balance Sheet location (Details) - USD ($) $ in Millions	Jul. 31, 2018	Oct. 31, 2017
Derivative Fair Value by Balance Sheet Location [Abstract]
Total derivatives Asset	$ 6	$ 6
Total derivatives Liabilities	2	1
Designated as Hedging Instruments | Cash Flow Hedging | Foreign Exchange Contracts | Other Current Assets [Member]
Derivative Fair Value by Balance Sheet Location [Abstract]
Total derivatives Asset	5	5
Designated as Hedging Instruments | Cash Flow Hedging | Foreign Exchange Contracts | Other Current Liabilities [Member]
Derivative Fair Value by Balance Sheet Location [Abstract]
Total derivatives Liabilities	1	0
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts | Other Current Assets [Member]
Derivative Fair Value by Balance Sheet Location [Abstract]
Total derivatives Asset	1	1
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts | Other Current Liabilities [Member]
Derivative Fair Value by Balance Sheet Location [Abstract]
Total derivatives Liabilities	$ 1	$ 1

DERIVATIVES, Effect of derivati

DERIVATIVES, Effect of derivative instruments on Consolidated Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within next Twelve Months			$ 2
Designated as Hedging Instruments | Cash Flow Hedging | Foreign Exchange Contracts | Accumulated Other Comprehensive Income (Loss)
Derivative [Line Items]
Gain (loss) recognized in accumulated other comprehensive income	$ 1	$ 1	3	$ 3
Designated as Hedging Instruments | Cash Flow Hedging | Foreign Exchange Contracts | Cost of products and services
Derivative [Line Items]
Gain (loss) reclassified from accumulated other comprehensive income into cost of sales	1	1	4	(1)
Not Designated as Hedging Instrument [Member] | Other (income) expense, net
Derivative [Line Items]
Gain (loss) recognized in other income (expense),net	$ 2	$ 3	$ 3	$ 5

RETIREMENT PLANS AND POST RET64

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS RETIREMENT AND POST RETIREMENT PENSION PLANS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Defined benefit plan | US
Defined Benefit Plan Disclosure [Line Items]
Service cost—benefits earned during the period	$ 6	$ 6	$ 18	$ 17
Interest cost on benefit obligation	7	5	19	15
Expected return on plan assets	(10)	(8)	(28)	(25)
Net actuarial loss	3	4	9	11
Prior service credit	(1)	(2)	(5)	(5)
Settlement gain			0	0
Net periodic benefit cost (benefit)	5	5	13	13
Defined benefit plan | Non-US
Defined Benefit Plan Disclosure [Line Items]
Service cost—benefits earned during the period	3	5	10	13
Interest cost on benefit obligation	6	6	18	17
Expected return on plan assets	(21)	(18)	(65)	(55)
Net actuarial loss	6	8	19	25
Prior service credit	0	0	0	(1)
Settlement gain			0	(68)
Net periodic benefit cost (benefit)	(6)	1	(18)	(69)
Post-retirement Benefits Plan | US
Defined Benefit Plan Disclosure [Line Items]
Service cost—benefits earned during the period	0	0	1	0
Interest cost on benefit obligation	2	2	5	6
Expected return on plan assets	(3)	(3)	(10)	(9)
Net actuarial loss	4	6	12	17
Prior service credit	(4)	(4)	(11)	(12)
Settlement gain			0	0
Net periodic benefit cost (benefit)	$ (1)	$ 1	$ (3)	$ 2

RETIREMENT PLANS AND POST RET65

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Details) (Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
US | Post-retirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	$ 0	$ 0	$ 0	$ 0
US | Defined benefit plan
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	0	0	85	0
Estimated future employer contributions in remainder of current fiscal year	0		0
Non-US | Defined benefit plan
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	6	$ 9	22	$ 24
Estimated future employer contributions in remainder of current fiscal year	$ 9		$ 9

RETIREMENT PLANS AND POST RET66

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS JAPAN PENSION FUND SETTLEMENT (Details) $ in Millions	Dec. 15, 2016USD ($)
Defined Benefit Plan Disclosure [Line Items]
Decrease in Pension Plan Obligations due to transfer of substitutional portion to Japanese government	$ (142)
Assets (substitutional portion) Transferred to Japanese government	(51)
Increase in funded status	91
Japanese Welfare Pension Insurance Law, Previously Accrued Salary Progression Derecognition	4
Other Operating Income (Expense) [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlement gain	$ 68

WARRANTIES AND CONTINGENCIES (D

WARRANTIES AND CONTINGENCIES (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Guarantees [Abstract]
Standard Product Warranty Description	Effective December 1, 2017, the Keysight warranty on products sold through direct sales channel is primarily one year. Warranties for products sold through distribution channels continue to be primarily three years.
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance at beginning of period	$ 45	$ 44
Accruals for warranties including change in estimate	28	24
Settlements made during the period	(26)	(23)
Ending balance at end of period	47	45
Standard Product Warranty Disclosure [Abstract]
Accruals for warranties due within one year	26	24
Accruals for warranties due after one year	21	21
Ending balance at end of period	$ 47	$ 45

DEBT Facility (Details)

DEBT Facility (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Line of Credit Facility [Line Items]
Amortization of Debt Issuance Costs	$ 0	$ 9
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Term	5 years
Facility, Description	On February 15, 2017, we entered into an amended and restated credit agreement (the “Revolving Credit Facility”) that replaced our existing $450 million unsecured credit facility dated September 15, 2014. The Revolving Credit Facility provides for a $450 million, five-year unsecured revolving credit facility that will expire on February 15, 2022 and bears interest at an annual rate of LIBOR + 1.30%. In addition, the Revolving Credit Facility permits us to increase the total commitments under this credit facility by up to $150 million in the aggregate on one or more occasions upon request. We may use amounts borrowed under the facility for general corporate purposes. During the nine months ended July 31, 2018, we borrowed and repaid $40 million of borrowings outstanding under the Revolving Credit Facility. As of July 31, 2018, we had no borrowings outstanding under the Revolving Credit Facility. We were in compliance with the covenants of the Revolving Credit Facility during the nine months ended July 31, 2018.
Facility, Initiation Date	Feb. 15, 2017
Facility, Maximum Borrowing Capacity	$ 450
Facility, Expiration Date	Feb. 15, 2022
Debt Instrument, Description of Variable Rate Basis	LIBOR + 1.30%
Additional drawings on credit facility	$ 150
Facility, Outstanding	0
Repayments	$ 40
Facility, Covenant Compliance	We were in compliance with the covenants of the Revolving Credit Facility during the nine months ended July 31, 2018.
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.30%
Senior Unsecured Term loan
Line of Credit Facility [Line Items]
Debt Instrument, Term	3 years
Senior Unsecured Term loan | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Description of Variable Rate Basis	LIBOR + 1.50%
Debt Instrument, Basis Spread on Variable Rate	1.50%

DEBT Long Term Debt (Details)

DEBT Long Term Debt (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Oct. 31, 2017
Debt Instrument [Line Items]
Document Period End Date	Jul. 31, 2018
Long-term Debt	$ 1,790	$ 2,048
Current portion of long-term debt	0	10
Long-term Debt, Excluding current portion of long-term debt	1,790	2,038
Letters of Credit Outstanding, Amount	24	26
Long Term Debt Fair Value above carrying Value	17	91
2019 Senior Notes at 3.30% ($500 face amount less unamortized costs of $1 and $2)
Debt Instrument [Line Items]
Long-term Debt	499	498
2024 Senior Notes at 4.55% ($600 face amount less unamortized costs of $3 and $4)
Debt Instrument [Line Items]
Long-term Debt	597	596
2027 Senior Notes at 4.60% ($700 face amount less unamortized costs of $6 and $6)
Debt Instrument [Line Items]
Long-term Debt	694	694
Senior Unsecured Term loan
Debt Instrument [Line Items]
Long-term Debt	$ 0	$ 260
Debt Instrument, Term	3 years

DEBT LONG TERM DEBT - 2027 SENI

DEBT LONG TERM DEBT - 2027 SENIOR NOTES (Details)	9 Months Ended
	Jul. 31, 2018
Debt Instrument [Line Items]
Document Period End Date	Jul. 31, 2018

DEBT LONG TERM DEBT - SENIOR UN

DEBT LONG TERM DEBT - SENIOR UNSECURED TERM LOAN (Details) - USD ($) $ in Millions	Feb. 27, 2018	Jul. 31, 2018	Oct. 31, 2017
Debt Instrument [Line Items]
Long-term Debt, Current Maturities		$ 0	$ 10
Document Period End Date		Jul. 31, 2018
Senior Unsecured Term loan
Debt Instrument [Line Items]
Debt Instrument, Issuance Date		Feb. 15, 2017
Debt Instrument, Term		3 years
Debt Instrument, Face Amount		$ 400
Repayments of Debt	$ 260
Senior Unsecured Term loan | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis		LIBOR + 1.50%
Debt Instrument, Basis Spread on Variable Rate		1.50%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Term		5 years
Debt Instrument, Description of Variable Rate Basis		LIBOR + 1.30%
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.30%

DEBT LONG TERM DEBT - UNAMORTIZ

DEBT LONG TERM DEBT - UNAMORTIZED COSTS (Details) - USD ($) $ in Millions	Jul. 31, 2018	Oct. 31, 2017
Senior Notes 2019 [Member]
Debt Instrument [Line Items]
Unamortized costs	$ 1	$ 2
Senior Notes 2024 [Member]
Debt Instrument [Line Items]
Unamortized costs	3	4
Senior Notes 2027 [Member]
Debt Instrument [Line Items]
Unamortized costs	6	6
Senior Unsecured Term loan
Debt Instrument [Line Items]
Unamortized costs		$ 0

STOCKHOLDERS' EQUITY STOCKHOLDE

STOCKHOLDERS' EQUITY STOCKHOLDES' EQUITY - Stock Repurchase (Details) - USD ($) shares in Millions, $ in Millions	9 Months Ended
	Jul. 31, 2018	Mar. 16, 2018	Oct. 31, 2016
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]
Stock Repurchase Program, Authorized Amount		$ 350	$ 200
Treasury Stock, Shares, Acquired	1,441,610
Treasury Stock, Common, Value	$ 80

STOCKHOLDER'S EQUITY - Accumula

STOCKHOLDER'S EQUITY - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (419)	$ (595)	$ (457)	$ (618)
Other comprehensive income (loss) before reclassifications	(35)	15	(7)	30
Amounts reclassified out of accumulated other comprehensive loss	7	11	20	35
Tax (expense) benefit	(2)	(3)	(5)	(19)
Other comprehensive income (loss)	(30)	23	8	46
Ending balance	(449)	(572)	(449)	(572)
Unrealized gain on equity securities [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	12	14	14	10
Other comprehensive income (loss) before reclassifications	(7)	(1)	(10)	3
Amounts reclassified out of accumulated other comprehensive loss	0	0	0	0
Tax (expense) benefit	0	1	1	1
Other comprehensive income (loss)	(7)	0	(9)	4
Ending balance	5	14	5	14
Foreign currency translation [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(11)	(44)	(39)	(29)
Other comprehensive income (loss) before reclassifications	(29)	15	(1)	0
Amounts reclassified out of accumulated other comprehensive loss	0	0	0	0
Tax (expense) benefit	0	0	0	0
Other comprehensive income (loss)	(29)	15	(1)	0
Ending balance	(40)	(29)	(40)	(29)
Net defined benefit pension cost and post retirement plan costs, actuarial losses [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(447)	(606)	(468)	(646)
Other comprehensive income (loss) before reclassifications	0	0	1	24
Amounts reclassified out of accumulated other comprehensive loss	13	18	40	52
Tax (expense) benefit	(4)	(6)	(11)	(24)
Other comprehensive income (loss)	9	12	30	52
Ending balance	(438)	(594)	(438)	(594)
Net defined benefit pension cost and post retirement plan costs, prior service credits [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	27	42	35	50
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified out of accumulated other comprehensive loss	(5)	(6)	(16)	(18)
Tax (expense) benefit	2	2	5	6
Other comprehensive income (loss)	(3)	(4)	(11)	(12)
Ending balance	24	38	24	38
Unrealized gain (losses) on derivatives [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0	(1)	1	(3)
Other comprehensive income (loss) before reclassifications	1	1	3	3
Amounts reclassified out of accumulated other comprehensive loss	(1)	(1)	(4)	1
Tax (expense) benefit	0	0	0	(2)
Other comprehensive income (loss)	0	0	(1)	2
Ending balance	$ 0	$ (1)	$ 0	$ (1)

STOCKHOLDERS' EQUITY - Reclassi

STOCKHOLDERS' EQUITY - Reclassifications out of accumulated comprehensive income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of Sales	$ (359)	$ (349)	$ (1,063)	$ (876)
Income Tax Expense (Benefit)	8	7	106	(9)
Net income (loss)	121	(18)	279	140
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	113	(25)	173	149
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net income (loss)	(6)	(7)	(15)	(24)
Unrealized gain (losses) on derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of Sales	1	1	4	(1)
Income Tax Expense (Benefit)	(1)	0	(1)	1
Net income (loss)	0	1	3	0
Net defined benefit pension cost and post retirement plan costs, actuarial losses [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(13)	(18)	(40)	(52)
Net defined benefit pension cost and post retirement plan costs, prior service credits [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	5	6	16	18
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income Tax Expense (Benefit)	2	4	6	10
Net income (loss)	(6)	(8)	(18)	(24)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	$ (8)	$ (12)	$ (24)	$ (34)

SEGMENT INFORMATION Profitabili

SEGMENT INFORMATION Profitability (Details) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018USD ($)	Jul. 31, 2017USD ($)	Jul. 31, 2018USD ($)	Jul. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments			4
Number of Operating Segments			4
Segment Reporting, Factors Used to Identify Entity's Reportable Segments			Our operating segments were determined based primarily on how the chief operating decision maker views and evaluates our operations. Segment operating results are regularly reviewed by the chief operating decision maker to make decisions about resources to be allocated to each segment and to assess performance. Other factors, including market separation and customer specific applications, go-to-market channels, products and services and manufacturing are considered in determining the formation of these operating segments.
Segment Reporting, Additional Information about Entity's Reportable Segments			The Communications Solutions Group serves customers spanning the worldwide commercial communications and aerospace, defense and government end markets. The group provides electronic design and test software, instruments, and systems used in the simulation, design, validation, manufacturing, installation and optimization of electronic equipment. The Electronic Industrial Solutions Group provides test and measurement solutions across a broad set of electronic industrial end markets, focusing on high-value applications in the automotive and energy industry and measurement solutions for semiconductor design and manufacturing, consumer electronics, education and general electronics design and manufacturing. The group provides electronic design and test software, instruments, and systems used in the simulation, design, validation, manufacturing, installation and optimization of electronic equipment. The Ixia Solutions Group helps customers validate the performance and security resilience of their networks and associated applications. The test, visibility and security solutions help organizations and their customers strengthen their physical and virtual networks. Enterprises, service providers, network equipment manufacturers, and governments worldwide rely on the group's solutions to validate new products before shipping and secure ongoing operation of their networks with better visibility and security. The group’s solutions consist of high-performance hardware platforms, software applications, and services, including warranty and maintenance offerings. The Services Solutions Group provides repair, calibration and consulting services, and resells used Keysight equipment. In addition to providing repair and calibration support for Keysight equipment, we also calibrate non-Keysight equipment. The group serves the same markets as Keysight’s Communications Solutions and Electronic Industrial Solutions Groups, providing industry-specific services to deliver complete Keysight solutions and help customers reduce their total cost of ownership for their design and test equipment.
Total net revenue	$ 1,004	$ 832	$ 2,831	$ 2,311
Amortization of acquisition-related balances	4	31	32	36
Total segment revenue	1,008	863	2,863	2,347
Segment income from operations	215	164	550	439
Communications Solutions Group [Member]
Segment Reporting Information [Line Items]
Total net revenue	515	418	1,470	1,275
Amortization of acquisition-related balances	0	0	1	1
Total segment revenue	515	418	1,471	1,276
Segment income from operations	114	66	299	213
Electronic Industrial Solutions Group [Member]
Segment Reporting Information [Line Items]
Total net revenue	258	218	716	630
Amortization of acquisition-related balances	0	0	0	0
Total segment revenue	258	218	716	630
Segment income from operations	74	55	178	154
Ixia Solutions Group [Member]
Segment Reporting Information [Line Items]
Total net revenue	115	89	305	97
Amortization of acquisition-related balances	4	31	31	35
Total segment revenue	119	120	336	132
Segment income from operations	10	24	21	22
Services Solutions Group [Member]
Segment Reporting Information [Line Items]
Total net revenue	116	107	340	309
Amortization of acquisition-related balances	0	0	0	0
Total segment revenue	116	107	340	309
Segment income from operations	$ 17	$ 19	$ 52	$ 50

SEGMENT INFORMATION Reconciliat

SEGMENT INFORMATION Reconciliation of Reportable Results (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Total reportable operating segments' income from operations	$ 215	$ 164	$ 550	$ 439
Share-based compensation expense	(14)	(13)	(48)	(44)
Restructuring and related costs	(3)	(3)	(16)	(6)
Amortization of acquisition-related balances	(56)	(134)	(210)	(170)
Acquisition and integration costs	(6)	(12)	(42)	(39)
Acquisition-related compensation expense	0	0	0	28
Separation and related costs	0	(4)	(2)	(18)
Pension curtailment and settlement gains	0	0	0	68
Northern California wildfire-related costs	0	0	(7)	0
Other	(8)	(2)	(2)	(2)
Income (loss) from operations	128	(4)	223	200
Interest income	3	2	8	5
Interest expense	(20)	(22)	(63)	(58)
Other income (expense), net	2	(1)	5	2
Income (loss) before taxes	$ 113	$ (25)	$ 173	$ 149

SEGMENT INFORMATION Segment Ass

SEGMENT INFORMATION Segment Assets (Details) - USD ($) $ in Millions	Jul. 31, 2018	Oct. 31, 2017
Segment Reporting Information [Line Items]
Assets	$ 5,846	$ 5,933

NORTHERN CALIFORNIA WILDFIRES79

NORTHERN CALIFORNIA WILDFIRES IMPACT (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Unusual or Infrequent Item, or Both [Line Items]
Document Period End Date			Jul. 31, 2018
Insurance Settlements Receivable, Current	$ 26		$ 26
Unusual or Infrequent Item, or Both, Insurance Proceeds			60
Loss from Catastrophes	0	$ 0	7	$ 0
Insurance Recoveries	$ 21		84
Property, Plant and Equipment [Member]
Unusual or Infrequent Item, or Both [Line Items]
Loss from Catastrophes			18
Uninsured Risk [Member]
Unusual or Infrequent Item, or Both [Line Items]
Loss from Catastrophes			$ 10

NORTHERN CALIFORNIA WILDFIRES80

NORTHERN CALIFORNIA WILDFIRES IMPACT Charges in consolidated statement of operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Unusual or Infrequent Item, or Both [Line Items]
Loss from Catastrophes	$ 0	$ 0	$ 7	$ 0
Cost of products and services
Unusual or Infrequent Item, or Both [Line Items]
Loss from Catastrophes	0		5
Research and development
Unusual or Infrequent Item, or Both [Line Items]
Loss from Catastrophes	0		1
Selling, general and administrative
Unusual or Infrequent Item, or Both [Line Items]
Loss from Catastrophes	$ 0		$ 1

NORTHERN CALIFORNIA WILDFIRES81

NORTHERN CALIFORNIA WILDFIRES IMPACT Range of estimated losses (Details) $ in Millions	Jul. 31, 2018USD ($)
Maximum [Member]
Loss due to catastrophe estimate	$ 130
Minimum [Member]
Loss due to catastrophe estimate	$ 115