Keysight (KEYS) 10-Q 30 May 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Apr. 30, 2019	May 29, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	KEYSIGHT TECHNOLOGIES, INC.
Entity Central Index Key	0001601046
Current Fiscal Year End Date	--10-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		188,170,970
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2019
Trading Symbol	KEYS
Entity Emerging Growth Company	false
Entity Small Business	false

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Net revenue:
Revenues	$ 1,090	$ 990	$ 2,096	$ 1,827
Costs and expenses:
Cost of Goods and Services Sold	442	451	870	863
Research and development	171	160	344	310
Selling, general and administrative	300	305	588	600
Other operating expense (income), net	(8)	(12)	(12)	(15)
Total costs and expenses	905	904	1,790	1,758
Income from operations	185	86	306	69
Interest income	6	2	10	5
Interest expense	(20)	(21)	(40)	(43)
Other income (expense), net	22	16	37	29
Income before taxes	193	83	313	60
Provision (benefit) for income taxes	40	19	46	(98)
Net income	$ 153	$ 64	$ 267	$ 158
Net income per share:
Basic (in dollars per share)	$ 0.81	$ 0.34	$ 1.42	$ 0.84
Diluted (in dollars per share)	$ 0.80	$ 0.34	$ 1.40	$ 0.83
Weighted average shares used in computing net income per share:
Basic (in shares)	188	188	188	187
Diluted (in shares)	191	190	191	190
Products
Net revenue:
Revenues	$ 911	$ 830	$ 1,748	$ 1,514
Costs and expenses:
Cost of Goods and Services Sold	360	370	707	709
Services and other
Net revenue:
Revenues	179	160	348	313
Costs and expenses:
Cost of Goods and Services Sold	$ 82	$ 81	$ 163	$ 154

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Other comprehensive income (loss):
Net income	$ 153	$ 64	$ 267	$ 158
Unrealized gain (loss) on investments, net of tax benefit of zero, $1, zero and $1	0	0	0	(2)
Unrealized gain (loss) on derivative instruments, net of tax benefit (expense) of zero	0	0	(2)	2
Amounts reclassified into earnings related to derivative instruments, net of tax benefit (expense) of zero	0	(1)	1	(3)
Foreign currency translation, net of tax benefit (expense) of zero	(16)	(13)	14	28
Net defined benefit pension cost and post retirement plan costs:
Change in actuarial net loss, net of tax expense of $4, $4, $7 and $7	8	11	21	21
Change in net prior service credit, net of tax benefit of $1, $2, $2 and $3	(4)	(4)	(7)	(8)
Other comprehensive income (loss)	(12)	(7)	27	38
Total comprehensive income	$ 141	$ 57	$ 294	$ 196

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Other comprehensive income (loss), tax, parenthetical disclosures [Abstract]
Unrealized gain (loss) on investments, tax	$ 0	$ 1	$ 0	$ 1
Unrealized gain (loss) on derivative instruments, tax	0	0	0	0
Amounts reclassified into earnings related to derivative instruments, tax	0	0	0	0
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	4	7	7
Change in net prior service credit, tax	$ 1	$ 2	$ 2	$ 3

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) - USD ($) $ in Millions	Apr. 30, 2019	Oct. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,277	$ 913
Accounts receivable, net	660	624
Inventory	660	619
Other current assets	227	222
Total current assets	2,824	2,378
Property, plant and equipment, net	563	555
Goodwill	1,174	1,171
Other intangible assets, net	543	645
Long-term investments	42	46
Long-term deferred tax assets	727	750
Other assets	317	279
Total assets	6,190	5,824
Current liabilities:
Short-term debt	500	499
Accounts payable	236	242
Employee compensation and benefits	281	276
Deferred revenue	333	334
Income and other taxes payable	61	42
Other accrued liabilities	74	69
Total current liabilities	1,485	1,462
Long-term debt	1,292	1,291
Retirement and post-retirement benefits	214	224
Long-term deferred revenue	150	127
Other long-term liabilities	251	287
Total liabilities	3,392	3,391
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; 193 million shares at April 30, 2019 and 191 million shares at October 31, 2018 issued	2	2
Treasury stock at cost; 5.4 million shares at April 30, 2019 and 4.4 million shares at October 31, 2018	(252)	(182)
Additional paid-in-capital	1,954	1,889
Retained earnings	1,555	1,212
Accumulated other comprehensive loss	(461)	(488)
Total stockholder's equity	2,798	2,433
Total liabilities and equity	$ 6,190	$ 5,824

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) - $ / shares shares in Millions	Apr. 30, 2019	Oct. 31, 2018
Stockholders' equity:
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	193	191
Treasury Stock, Shares	5.4	4.4

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Cash flows from operating activities:
Net Income	$ 267	$ 158
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	48	53
Amortization	103	104
Share-based compensation	50	34
Deferred tax benefit	(2)	(237)
Excess and obsolete inventory-related charges	13	11
Gain on divestiture	(1)	(8)
Other non-cash expenses, net	(2)	5
Changes in assets and liabilities:
Accounts receivable	(28)	(31)
Inventory	(53)	(18)
Accounts payable	1	20
Employee compensation and benefits	5	23
Retirement and post-retirement benefits	(23)	(22)
Deferred Revenue	85	71
Income taxes payable	(8)	125
Other assets and liabilities	6	(6)
Net cash provided by operating activities	461	282
Cash flows from investing activities:
Investments in property, plant and equipment	(60)	(58)
Proceeds from sale of investments	7	0
Proceeds from divestiture	2	12
Other investing activities	2	0
Net cash used in investing activities	(49)	(46)
Cash flows from financing activities:
Proceeds from issuance of common stock under employee stock plans	39	33
Payment of taxes related to net share settlement of equity awards	(24)	(16)
Payment of acquisition-related contingent consideration	0	(3)
Proceeds from credit facility	0	40
Repayment of debt and credit facility	0	(300)
Treasury stock repurchases	(69)	(28)
Net Cash used in financing activities	(54)	(274)
Effect of exchange rate movements	5	4
Net increase (decrease) in cash, cash equivalents, and restricted cash	363	(34)
Cash, cash equivalents, and restricted cash at beginning of period	917	820
Cash, cash equivalents, and restricted cash at end of period	$ 1,280	$ 786

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENT OF EQUITY Statement - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment due to adoption of new accounting standards	$ 6				$ 6
Common Stock, Shares, Outstanding at Oct. 31, 2017		188,310,000
Treasury Stock, Shares at Oct. 31, 2017				(2,289,000)
Stockholders' Equity, Balance at Oct. 31, 2017	2,310	$ 2	$ 1,786	$ (62)	1,041	$ (457)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (shares)		1,943,000
Issuance of common stock ($)	17		17
Share-based compensation	34		34
Net Income	158				158
Other Comprehensive Income (Loss), Net of Tax	$ 38					38
Treasury Stock, Shares, Acquired	(773,352)			(773,000)
Treasury Stock, Value, Acquired, Cost Method	$ (40)			$ (40)
Common Stock, Shares, Outstanding at Apr. 30, 2018		190,253,000
Treasury Stock, Shares at Apr. 30, 2018				(3,062,000)
Stockholders' Equity, Balance at Apr. 30, 2018	2,523	$ 2	1,837	$ (102)	1,205	(419)
Common Stock, Shares, Outstanding at Jan. 31, 2018		189,800,000
Treasury Stock, Shares at Jan. 31, 2018				(2,289,000)
Stockholders' Equity, Balance at Jan. 31, 2018	2,484	$ 2	1,815	$ (62)	1,141	(412)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (shares)		453,000
Issuance of common stock ($)	8		8
Share-based compensation	14		14
Net Income	64				64
Other Comprehensive Income (Loss), Net of Tax	(7)					(7)
Treasury Stock, Shares, Acquired				(773,000)
Treasury Stock, Value, Acquired, Cost Method	(40)			$ (40)
Common Stock, Shares, Outstanding at Apr. 30, 2018		190,253,000
Treasury Stock, Shares at Apr. 30, 2018				(3,062,000)
Stockholders' Equity, Balance at Apr. 30, 2018	2,523	$ 2	1,837	$ (102)	1,205	(419)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment due to adoption of new accounting standards	$ 76				76
Common Stock, Shares, Outstanding at Oct. 31, 2018		191,204,000
Treasury Stock, Shares at Oct. 31, 2018	4,400,000			(4,364,000)
Stockholders' Equity, Balance at Oct. 31, 2018	$ 2,433	$ 2	1,889	$ (182)	1,212	(488)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (shares)		2,013,000
Issuance of common stock ($)	15		15
Share-based compensation	50		50
Net Income	267				267
Other Comprehensive Income (Loss), Net of Tax	$ 27					27
Treasury Stock, Shares, Acquired	(1,030,120)			(1,030,000)
Treasury Stock, Value, Acquired, Cost Method	$ (70)			$ (70)
Common Stock, Shares, Outstanding at Apr. 30, 2019		193,217,000
Treasury Stock, Shares at Apr. 30, 2019	5,400,000			(5,394,000)
Stockholders' Equity, Balance at Apr. 30, 2019	$ 2,798	$ 2	1,954	$ (252)	1,555	(461)
Common Stock, Shares, Outstanding at Jan. 31, 2019		192,801,000
Treasury Stock, Shares at Jan. 31, 2019				(5,050,000)
Stockholders' Equity, Balance at Jan. 31, 2019	2,658	$ 2	1,925	$ (222)	1,402	(449)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (shares)		416,000
Issuance of common stock ($)	7		7
Share-based compensation	22		22
Net Income	153				153
Other Comprehensive Income (Loss), Net of Tax	(12)					(12)
Treasury Stock, Shares, Acquired				(344,000)
Treasury Stock, Value, Acquired, Cost Method	$ (30)			$ (30)
Common Stock, Shares, Outstanding at Apr. 30, 2019		193,217,000
Treasury Stock, Shares at Apr. 30, 2019	5,400,000			(5,394,000)
Stockholders' Equity, Balance at Apr. 30, 2019	$ 2,798	$ 2	$ 1,954	$ (252)	$ 1,555	$ (461)

OVERVIEW, BASIS OF PRESENTATION

OVERVIEW, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	6 Months Ended
	Apr. 30, 2019
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 technology company providing electronic design and test solutions that are used in the design, development, manufacture, installation, deployment, validation, optimization and secure operation of electronics systems to communications, networking and electronics industries. We also offer customization, consulting and optimization services throughout the customer's product lifecycle, including start-up assistance, instrument productivity, application services and instrument calibration and repair. 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 financial position as of April 30, 2019 and October 31, 2018 , our results of operations for the three and six months ended April 30, 2019 and 2018 and cash flows for the six months ended April 30, 2019 and 2018 . 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, loss contingencies, restructuring, and accounting for income taxes. Update to Significant Accounting Policies. Except as set forth in Note 2, "New Accounting Pronouncements," there have been no material changes to our significant accounting policies as described in our Annual Report on Form 10-K for the fiscal year ended October 31, 2018 .

NEW ACCOUNTING PRONOUNCEMENTS

NEW ACCOUNTING PRONOUNCEMENTS	6 Months Ended
	Apr. 30, 2019
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 ASU 2014-09 and has since modified the standard with several ASUs (collectively, the “new revenue standard” or "ASC 606"). The new revenue standard requires entities to recognize revenue through the application of a five-step model, which includes: identification of the contract, identification of the performance obligations, determination of the transaction price, allocation of the transaction price to the performance obligations, and recognition of revenue as the entity satisfies the performance obligations. We adopted the new revenue standard on November 1, 2018, using the modified retrospective method with the cumulative effect of initially applying the guidance recognized at the date of adoption. Comparative information has not been restated and continues to be reported under the standards in effect for the prior periods presented. We have applied the new revenue standard only to contracts not completed as of the date of adoption, referred to as open contracts. We have elected the practical expedient that permits an entity to reflect the aggregate effect of all modifications (on a contract-by-contract basis) that occurred before the date of adoption in determining the transaction price, identifying the satisfied and unsatisfied performance obligations, and allocating the transaction price to the performance obligations. The most significant impact of the new revenue standard was our accounting for software license revenue. Historically, we have deferred revenue for certain types of license arrangements and recognize the revenue ratably over the license term. Under the new revenue standard, we are no longer required to establish vendor-specific objective evidence to recognize software license revenue separately from the other elements, and we are required to recognize software license revenue once the customer obtains control of the license, which will generally occur at the start of each license term. The new revenue standard further requires certain costs, primarily sales-related commissions on contracts, to be capitalized rather than expensed. We reclassified our allowance for sales returns from accounts receivable, net to other accrued liabilities due to the adoption of the new revenue standard. See Note 3, "Revenue." The cumulative effect of initially applying the new revenue standard to all open contracts as of November 1, 2018 was as follows: October 31, Adjustments Due to ASC 606 November 1, (in millions) Assets: Accounts receivable, net $ 624 $ 7 $ 631 Other current assets 222 28 250 Long-term deferred tax assets 750 (15 ) 735 Other assets 279 3 282 Liabilities: Deferred revenue $ 334 $ (53 ) $ 281 Income and other taxes payable 42 1 43 Other accrued liabilities 69 7 76 Long-term deferred revenue 127 (11 ) 116 Other long-term liabilities 287 3 290 Stockholders' equity: Retained earnings $ 1,212 $ 76 $ 1,288 The following tables summarize the impact of ASC 606 on our condensed consolidated financial statements: Three months ended April 30, 2019 As Reported Balances Without Adoption of ASC 606 Effect of Change (in millions) Net revenue: Products $ 911 $ 903 $ 8 Services and other 179 184 (5 ) Total net revenue 1,090 1,087 3 Costs and expenses: Cost of products 360 360 — Cost of services and other 82 82 — Total costs 442 442 — Research and development 171 171 — Selling, general and administrative 300 298 2 Other operating expense (income), net (8 ) (8 ) — Total costs and expenses 905 903 2 Income from operations 185 184 1 Interest income 6 6 — Interest expense (20 ) (20 ) — Other income (expense), net 22 22 — Income before taxes 193 192 1 Provision for income taxes 40 40 — Net income $ 153 $ 152 $ 1 Net income per share: Basic $ 0.81 $ 0.81 $ — Diluted $ 0.80 $ 0.79 $ 0.01 Six months ended April 30, 2019 As Reported Balances Without Adoption of ASC 606 Effect of Change (in millions) Net revenue: Products $ 1,748 $ 1,725 $ 23 Services and other 348 354 (6 ) Total net revenue 2,096 2,079 17 Costs and expenses: Cost of products 707 706 1 Cost of services and other 163 163 — Total costs 870 869 1 Research and development 344 344 — Selling, general and administrative 588 585 3 Other operating expense (income), net (12 ) (12 ) — Total costs and expenses 1,790 1,786 4 Income from operations 306 293 13 Interest income 10 10 — Interest expense (40 ) (40 ) — Other income (expense), net 37 37 — Income before taxes 313 300 13 Provision for income taxes 46 44 2 Net income $ 267 $ 256 $ 11 Net income per share: Basic $ 1.42 $ 1.36 $ 0.06 Diluted $ 1.40 $ 1.34 $ 0.06 April 30, 2019 As Reported Balances Without Adoption of ASC 606 Effect of Change Higher/(Lower) (in millions) Assets: Accounts receivable, net $ 660 $ 652 $ 8 Inventory 660 661 (1 ) Other current assets 227 202 25 Long-term deferred tax assets 727 744 (17 ) Other assets 317 314 3 Liabilities: Deferred revenue $ 333 $ 397 $ (64 ) Income and other taxes payable 61 60 1 Other accrued liabilities 74 67 7 Long-term deferred revenue 150 166 (16 ) Other long-term liabilities 251 248 3 Stockholders' equity: Retained earnings $ 1,555 $ 1,468 $ 87 ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities . In January 2016, the FASB issued guidance related to certain aspects of recognition, measurement, presentation and disclosure of financial instruments. Most prominent among the changes in the standard is the requirement for changes in the fair value of our equity investments, with certain exceptions, to be recognized in net income rather than other comprehensive income. We adopted the standard effective November 1, 2018 using a modified retrospective approach. We elected to prospectively measure equity investments without readily determinable fair values at cost with adjustments for observable changes in price or impairments. The adoption of this guidance did not have a material impact to our condensed consolidated financial statements. ASU 2016-02, Leases. In February 2016, the FASB issued guidance that will require substantially all leases to be reported on the balance sheet as right-of-use assets and lease obligations. We expect our leases designated as operating leases in Note 16 to the consolidated financial statements in our Annual Report on Form 10-K for fiscal year ended October 31, 2018 will be reported in the consolidated balance sheet upon adoption. 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. The standard is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. We expect to adopt the new standard on November 1, 2019 using the modified retrospective approach provided by ASU 2018-11, Leases: Targeted Improvements , that allows for a cumulative effect adjustment in the period of adoption. We will elect the transition package of practical expedients, which among other things, allows us to carry forward the historical lease classification. We do not plan to elect the practical expedient to use hindsight in determining the lease term and in assessing impairment of right-of-use assets. The company has selected a leasing software solution and is in the process of identifying changes to our business processes, systems, and controls to support adoption of the new standard. ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments . In August 2016, the FASB issued guidance that adds or clarifies guidance on eight cash flow classification issues that had been creating diversity in practice. We adopted this guidance during the first quarter of 2019 retrospectively to all periods presented, which resulted in the following change to our previously reported condensed consolidated statement of cash flows for the six months ended April 30, 2018 related to the classification of acquisition-related contingent consideration. Six Months Ended April 30, 2018 As Originally Reported As Adjusted Change (in millions) Net cash provided by operating activities $ 282 $ 282 $ — Net cash used in investing activities $ (49 ) $ (46 ) $ 3 Net cash used in financing activities $ (271 ) $ (274 ) $ (3 ) ASU 2016-18, Restricted Cash. In November 2016, the FASB issued guidance that requires an entity to include in its cash and cash equivalent balances in the statement of cash flows those amounts that are deemed to be restricted cash and restricted cash equivalents. We adopted this guidance during the first quarter of 2019 retrospectively to all periods presented. See Note 7, "Supplemental Cash Flow Information." 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 post-retirement 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. We retrospectively adopted this guidance during the first quarter of 2019. The interest cost, expected return on assets, amortization of prior service credits and other costs have been reclassified from cost of products, research and development, selling, general and administrative, and other operating expenses (income) to other income (expense). We elected to apply the practical expedient, which allows us to reclassify amounts disclosed previously in our retirement plans and post-retirement benefit plans note as the basis for applying retrospective presentation for comparative periods as it is impractical to determine the disaggregation of the components for amounts capitalized and reclassified in those periods. On a prospective basis, the service cost component of net periodic pension and post-retirement benefit cost is presented with other current compensation costs in operating income. The remaining components are included in other income (expense) and will not be included in amounts capitalized in inventory or property, plant, and equipment. The effect of the retrospective presentation change related to the retirement plans and post-retirement benefit plans to our previously reported condensed consolidated statement of operations for the three and six months ended April 30, 2018 was as follows: Three Months Ended Six Months Ended As Originally Reported As Adjusted Effect of Change As Originally Reported As Adjusted Effect of Change (in millions) (in millions) Cost of products $ 367 $ 370 $ 3 $ 704 $ 709 $ 5 Cost of services $ 80 $ 81 $ 1 $ 153 $ 154 $ 1 Research and development $ 156 $ 160 $ 4 $ 302 $ 310 $ 8 Selling, general and administrative $ 299 $ 305 $ 6 $ 588 $ 600 $ 12 Other income (expense), net $ 2 $ 16 $ 14 $ 3 $ 29 $ 26 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. We adopted this guidance during the first quarter of 2019 and elected to continue to record changes in the fair value of components excluded from the effectiveness assessment of cash flow hedges in earnings. The adoption of this guidance did not have a material impact to our condensed 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 (the "Tax Act") enacted in December 2017. The standard is effective for fiscal years beginning after December 15, 2018. Early adoption is permitted. We adopted this guidance on November 1, 2018. We elected to retain the income tax effects of the Tax Act as a component of accumulated other comprehensive income. Given this election, the adoption of this guidance did not have a material impact on our condensed consolidated financial statements. ASU 2018-15, Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. In August 2018, the FASB issued guidance that requires a customer in a cloud computing arrangement (i.e., hosting arrangement) that is a service contract to follow the internal-use software guidance to determine which implementation costs to defer and recognize as an asset and aligns the recognition of implementation costs to those incurred in an arrangement that includes an internal-use software license. Further, new disclosures about implementation costs for both internal-use software and hosting arrangements are required. The standard is effective for fiscal years beginning after December 15, 2019 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. 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.

REVENUE (Notes)

REVENUE (Notes)	6 Months Ended
	Apr. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	3. REVENUE Revenue Recognition Revenue is recognized upon transfer of control of the promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. We primarily generate revenue from the sale of products (hardware and/or software), services, or a combination thereof. We enter into contracts that may involve multiple performance obligations, and we allocate the transaction price between each performance obligation on the basis of relative standalone selling price. Revenue is recognized net of allowances for returns and any taxes collected from customers, which are subsequently remitted to governmental authorities. Nature of Goods and Services Product revenues are generated predominantly from the sales of various types of design and test hardware and associated software. Products consist of hardware, generally installed with basic software and software licenses that consist of perpetual and term-based licenses for optional software. Our hardware products generally do not have any substantive acceptance terms that would otherwise preclude the transfer of control. Performance obligations related to our software licenses, including the license portion of our software subscriptions, grant the customer the right to use our software via electronic delivery. Service revenues consist of repair and calibration services, extended warranties, technical support for hardware and software, when-and-if available software updates and upgrades, and professional services, including installation and implementation, consulting, and training. Repair and calibration services for hardware products are sold both as per-incident customer services and as customer agreements to provide such services over the contractual period. Extended warranties are optional to the customer and provide warranty on hardware products for additional years beyond the standard one-year warranty. Technical support for software and when-and-if available software updates and upgrades are sold either together with our software licenses and software subscriptions, or separately as part of our customer support programs. These are considered stand-ready performance obligations where customers benefit from the services evenly throughout the license or service period. These performance obligations provide the customer access evenly over the contract period. Our professional services may be sold on a time and material basis (e.g., consulting) or on a fixed-fee basis (e.g., non-recurring engineering). We also generate revenues from a combination of products and services ("custom solutions"), including combinations of hardware, software, installation or other start-up services, software subscriptions, and/or software support services. Custom solutions provide the customer with a combination of hardware, software and professional services to meet customers' unique specifications. For our contracts with customers, we account for individual performance obligations separately if they are distinct. Our standard payment terms are net 30 to 90 days, and we generally do not offer extended payment terms beyond one year. Our contracts typically contain various forms of variable consideration, including trade discounts, trade-in credits, rebates, and rights of return. The transaction price is allocated to the separate performance obligations on a relative standalone selling price basis. Standalone selling prices for a majority of our products and services are estimated based on our established pricing practices and maximize the use of observable inputs. We have elected to exclude from the measurement of the transaction price all taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction and collected by Keysight from a customer (e.g., sales, use, value added, and some excise taxes). We have also elected to account for shipping and handling activities that occur after control of the related good transfers as fulfillment activities instead of assessing such activities as performance obligations. Our typical performance obligations include the following: Performance Obligation When performance obligation is typically satisfied When payment is typically due How standalone selling price is typically determined Product Revenues Hardware When customer obtains control of the product, typically at delivery (point in time) Within 30-90 days of shipment Estimated based on established pricing practices or observable based on standalone sales for certain hardware products Software licenses Upon electronic delivery of the software, and the applicable license period has begun (point in time) Within 30-90 days of the beginning of license period Estimated based on established pricing practices or observable based on standalone sales for certain software products Threat intelligence solutions Ratably over the subscription period (over time) Within 30-90 days of the beginning of subscription period Estimated based on established pricing practices Service Revenues Calibration contracts Ratably over the service contract period (over time) Within 30-90 days of the beginning of service contract period Estimated based on established pricing practices Repair and calibration (per- incident) As services are performed (point in time) Within 30-90 days of invoicing for services rendered Estimated based on established pricing practices Extended hardware warranty Ratably over the warranty period (over time) Within 30-90 days of the beginning of warranty period Estimated based on established pricing practices or observable based on standalone sales of certain hardware warranty contracts Technical support and when-and-if-available software updates Ratably over the license service contract period (over time) Within 30-90 days of the beginning of license or service contract period Estimated based on established pricing practices or observable based on standalone sales for certain support contracts Professional services As services are performed based on measures of progress (over time) or at a point in time Within 30-90 days invoicing for services rendered Estimated based on established pricing practices Custom Solutions Custom solutions (milestone-based) As milestones are achieved based on transfer of control to customer (over time) Within 30-90 days of milestone achievement Transaction price, as pricing is custom and can vary significantly from contract to contract Custom solutions (point in time) When customer obtains control of the solution, typically at delivery (point in time) Within 30-90 days of delivery of solution Transaction price, as pricing is custom and can vary significantly from contract to contract Significant Judgments Judgment is required to determine the standalone selling price for each distinct performance obligation. As most of our products and services are not sold on a standalone basis, we typically estimate the standalone selling price. In doing so, we consider our internal price list for each product and service, which reflects our desired profitability, based on an expected level of sales, and adjust for factors such as competition, customer relationship, discount provided in the contract, geographic location, and the products and services purchased in the arrangement. We use a range based on actual historical sales to determine whether the calculated standalone selling price for a product or service is a fair representation of the standalone selling price. For capitalized contract costs, we use judgment in determining the capitalized amount. Our products are generally sold with a right of return and we may provide other credits, discounts, or incentives, which are accounted for as variable consideration when estimating the amount of revenue to recognize. Returns, credits, and discounts are estimated at contract inception and updated at the end of each reporting period as additional information becomes available to the extent that it is probable a significant reversal of the cumulative amount of revenue recognized will not occur once the variability is subsequently resolved. Disaggregation of Revenue We disaggregate our revenue from contracts with customers by geographic region, end market, and timing of transfer of products and services to customers, as we believe these categories best depict how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. Disaggregated revenue is presented for each of our three reportable segments. Three Months Ended April 30, 2019 Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Total (in millions) Region Americas $ 294 $ 66 $ 65 $ 425 Europe 90 71 18 179 Asia Pacific 292 162 32 486 Total net revenue $ 676 $ 299 $ 115 $ 1,090 End Market Aerospace, Defense & Government $ 245 $ — $ — $ 245 Commercial Communications 431 — — 431 Electronic Industrial — 299 — 299 Ixia Solutions — — 115 115 Total net revenue $ 676 $ 299 $ 115 $ 1,090 Timing of Revenue Recognition Revenue recognized at a point in time $ 619 $ 274 $ 68 $ 961 Revenue recognized over time 57 25 47 129 Total net revenue $ 676 $ 299 $ 115 $ 1,090 Six Months Ended April 30, 2019 Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Total (in millions) Region Americas $ 566 $ 123 $ 139 $ 828 Europe 186 134 38 358 Asia Pacific 547 299 64 910 Total net revenue $ 1,299 $ 556 $ 241 $ 2,096 End Market Aerospace, Defense & Government $ 468 $ — $ — $ 468 Commercial Communications 831 — — 831 Electronic Industrial — 556 — 556 Ixia Solutions — — 241 241 Total net revenue $ 1,299 $ 556 $ 241 $ 2,096 Timing of Revenue Recognition Revenue recognized at a point in time $ 1,189 $ 509 $ 150 $ 1,848 Revenue recognized over time 110 47 91 248 Total net revenue $ 1,299 $ 556 $ 241 $ 2,096 Contract Balances The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets) and deferred revenue (contract liabilities) on our condensed consolidated balance sheet. In addition, we defer and capitalize certain costs incurred to obtain a contract (contract costs). Contract assets - Contract assets represent unbilled amounts from arrangements for which we have performed by transferring goods or services to the customer in advance of receiving all or partial consideration for such goods and services from the customer. Contract assets arise primarily from service agreements and products delivered pending a formal customer acceptance, which generally occurs within 30 days. The contract assets balance was $16 million at April 30, 2019 and is included in "accounts receivables, net" in our condensed consolidated balance sheet. Contract costs - We recognize an asset for the incremental costs of obtaining a contract with a customer. We have determined that certain employee and third-party representative commissions programs meet the requirements to be capitalized. Employee commissions are based on the achievement of order volume compared to a sales target. Third-party representative commission costs relate directly to a customer contract as the commission is tied to orders contracted through and contracts arranged by our third-party representatives. Without obtaining the contracts, the commissions would not be paid and, as such, are determined to be an incremental cost to obtaining a contract. We only defer these costs when we have determined the commissions are, in fact, incremental and would not have been incurred absent the customer contract. Capitalized incremental costs are allocated to the individual performance obligations in proportion to the transaction price allocated to each performance obligation and amortized based on the pattern of performance for the underlying performance obligation. Contract costs related to initial contracts and renewals are amortized over the same period because the commissions paid on both the initial contract and renewals are commensurate with one another. The following table provides a roll-forward of our capitalized contract costs, current and non-current: Six Months Ended April 30, 2019 (in millions) Balance at October 31, 2018 $ — Costs capitalized on November 1, 2018 due to ASC 606 adoption 29 Costs capitalized during the period 33 Costs amortized during the period (36 ) Balance at April 30, 2019 $ 26 Contract liabilities - Our contract liabilities consist of deferred revenue that arises when we receive consideration in advance of providing the goods or services promised in the contract. Contract liabilities are primarily generated from customer deposits received in advance of shipments for products or rendering of services and are recognized as revenue when services are provided to the customer. We classify deferred revenue as current or non-current based on the timing of when we expect to recognize revenue. Contract liabilities are recognized as revenue when services are provided to the customer. Changes in contract liabilities, current and non-current, during the six months ended April 30, 2019 were as follows: Contract Liabilities (in millions) Balance at October 31, 2018 $ 461 Impact of adopting new revenue standard (64 ) Balance at November 1, 2018 397 Deferral of revenue billed in current period, net of recognition 276 Revenue recognized that was deferred as of the beginning of the period (191 ) Foreign currency translation impact 1 Balance at April 30, 2019 $ 483 Remaining Performance Obligations Revenue expected to be recognized in any future period related to remaining performance obligations, excluding revenue pertaining to contracts that have an original expected duration of one year or less, was approximately $280 million as of April 30, 2019 , and represents the company’s obligation to deliver products and services and obtain customer acceptance on delivered products. Since we typically invoice customers at contract inception, this amount is included in our current and long-term deferred revenue balances. As of April 30, 2019 , we expect to recognize approximately 26% of the revenue related to these unsatisfied performance obligations during the remainder of 2019, 37% during 2020, and 37% thereafter. Practical Expedients As discussed in Note 2, "New Accounting Pronouncements," and previously in this note, we have elected the following practical expedients in accordance with ASC 606: • We do not disclose the value of remaining performance obligations for contracts with an original expected length of one year or less. • We determine incremental costs of obtaining a contract for a portfolio of contracts with similar characteristics as we reasonably expect that the effects on the financial statements of applying this guidance to the portfolio would not differ materially from applying this guidance to the individual contracts within that portfolio. • We exclude from the transaction price certain taxes (e.g., sales, use, value added, and some excise taxes). • We do not adjust the promised amount of consideration for the effects of a significant financing component if we expect, at contract inception, that the period between when we transfer a promised good or service to a customer and when the customer pays for that good or service will be one year or less. • We treat shipping and handling costs associated with outbound freight after control of a product has transferred to a customer as a fulfillment cost, included in cost of products. • We have applied the guidance only to contracts that have not been completed as of the date of adoption (November 1, 2018). • We did not evaluate individual modifications for those periods prior to the adoption date, but rather evaluated the aggregate effect of all modifications as of the adoption date.

SHARE-BASED COMPENSATION

SHARE-BASED COMPENSATION	6 Months Ended
	Apr. 30, 2019
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 Six Months Ended April 30, April 30, 2019 2018 2019 2018 (in millions) Cost of products and services $ 5 $ 4 $ 9 $ 7 Research and development 3 2 9 6 Selling, general and administrative 15 9 32 21 Total share-based compensation expense $ 23 $ 15 $ 50 $ 34 The expense for the three and six months ended April 30, 2019 includes a mark-to-market adjustment of $4 million for financial metrics-based performance awards. At both April 30, 2019 and 2018, there was no share-based compensation capitalized within inventory. The following assumptions were used to estimate the fair value of awards granted under the LTP Program that are based on total shareholder return ("TSR"): Three Months Ended Six Months Ended April 30, April 30, 2019 2018 2019 2018 Volatility of Keysight shares 26 % 25 % 25 % 25 % Volatility of selected index 13 % 14 % 12 % 14 % Price-wise correlation with selected peers 57 % 57 % 57 % 57 % The TSR-based performance awards were valued using a Monte Carlo simulation model, which requires the use of highly subjective and complex assumptions, including the price volatility of the underlying stock. The estimated fair value of restricted stock awards and the financial metrics-based performance awards is determined based on the market price of Keysight’s common stock on the grant date. We did not grant any option awards for the three and six months ended April 30, 2019 and 2018, respectively.

INCOME TAXES

INCOME TAXES	6 Months Ended
	Apr. 30, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The company’s effective tax rate was 20.8 percent and 14.8 percent for the three and six months ended April 30, 2019, respectively. The income tax expense was $40 million and $46 million for the three and six months ended April 30, 2019, respectively. The income tax expense for the three months ended April 30, 2019 included a net discrete benefit of $5 million . The income tax expense for the six months ended April 30, 2019 included a net discrete benefit of $29 million , primarily related to a change in tax reserves resulting from a change in judgment. The company’s effective tax rate was an expense of 22.5 percent and a benefit of 162.8 percent for the three and six months ended April 30, 2018, respectively. The income tax expense was $19 million and income tax benefit was $98 million for the three and six months ended April 30, 2018, respectively. The income tax expense for the three months ended April 30, 2018 included a net discrete expense of $11 million , and the income tax benefit for the six months ended April 30, 2018 included a net discrete benefit of $104 million , primarily due to $103 million discrete tax benefit resulting from changes in U.S. tax law. 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. The impact of tax incentives decreased the income tax provision for the three and six months ended April 30, 2019 by $11 million and $19 million , respectively, resulting in a benefit to net income per share (diluted) of approximately $0.06 and $0.10 for the three and six months ended April 30, 2019, respectively. The open tax years for the IRS and most states are from November 1, 2014 through the current tax year. For the majority of our foreign entities, the open tax years are from August 1, 2014 through the current tax year. For certain foreign entities, the tax years remain open, at most, back to the year 2008 . 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.

NET INCOME PER SHARE

NET INCOME PER SHARE	6 Months Ended
	Apr. 30, 2019
Earnings Per Share [Abstract]
NET INCOME PER SHARE	NET INCOME PER SHARE The following is a reconciliation of the numerator and denominator of the basic and diluted net income per share computations for the periods presented below: Three Months Ended Six Months Ended April 30, April 30, 2019 2018 2019 2018 (in millions) Numerator: Net income $ 153 $ 64 $ 267 $ 158 Denominator: Basic weighted-average shares 188 188 188 187 Potential common shares— stock options and other employee stock plans 3 2 3 3 Diluted weighted-average shares 191 190 191 190 The dilutive effect of share-based awards is reflected in diluted net income per share by application of the treasury stock method, which includes consideration of unamortized share-based compensation expense and the dilutive effect of in-the-money options and non-vested restricted stock units. Under the treasury stock method, the amount the employee must pay for exercising stock options and unamortized share-based compensation expense are collectively assumed to be used to repurchase hypothetical 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 their effect would be anti-dilutive. For both the three and six months ended April 30, 2019 and 2018, we excluded zero options from the calculation of diluted earnings per share. In addition, we also exclude from the calculation of diluted earnings per share, stock options, ESPP, LTP Program and restricted stock awards, whose combined exercise price, unamortized fair value and excess tax benefits collectively were greater than the average market price of our common stock because their effect would also be anti-dilutive. For the three and six months ended April 30, 2019, we excluded approximately zero shares and 1,000 shares, respectively. For the three and six months ended April 30, 2018, we excluded approximately 15,000 shares and 6,000 shares, respectively.

SUPPLEMENT CASH FLOW INFORMATIO

SUPPLEMENT CASH FLOW INFORMATION (Notes)	6 Months Ended
	Apr. 30, 2019
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 $48 million and $11 million for the six months ended April 30, 2019 and 2018, respectively. There were higher tax payments in the first half of fiscal 2019 primarily due to increased tax liability resulting from U.S. tax legislation enacted in the first quarter of fiscal 2018. Cash paid for interest was $38 million and $41 million for the six months ended April 30, 2019 and 2018, respectively. The following table summarizes our non-cash investing activities that are not reflected in the condensed consolidated statement of cash flows: Six months ended April 30, 2019 2018 (in millions) Non-cash investing activities Increase (decrease) in unpaid capital expenditures in accounts payable $ 7 $ (9 ) $ 7 $ (9 ) Non-cash financing activities Treasury stock repurchases pending settlement in other accrued liabilities $ (1 ) $ (12 ) $ (1 ) $ (12 ) The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the condensed consolidated balance sheet to the amount shown in the condensed consolidated statement of cash flows: Six months ended April 30, 2019 2018 (in millions) Cash and cash equivalents $ 1,277 $ 784 Restricted cash included in other current assets 2 — Restricted cash included in other assets 1 2 Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 1,280 $ 786 Restricted cash consisted primarily of deposits held as collateral against bank guarantees.

INVENTORY

INVENTORY	6 Months Ended
	Apr. 30, 2019
Inventory, Net [Abstract]
INVENTORY	INVENTORY April 30, October 31, (in millions) Finished goods $ 290 $ 283 Purchased parts and fabricated assemblies 370 336 Total inventory $ 660 $ 619 Inventory-related excess and obsolescence charges recorded in total cost of products were $13 million and $11 million for the six months ended April 30, 2019 and 2018, respectively. We record excess and obsolete inventory charges for inventory at our sites as well as inventory at our contract manufacturers and suppliers, where we have non-cancellable purchase commitments.

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS	6 Months Ended
	Apr. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLE ASSETS	GOODWILL AND OTHER INTANGIBLE ASSETS The goodwill balances as of April 30, 2019 and October 31, 2018 and the activity for the six months ended April 30, 2019 for each of our reportable operating segments were as follows. Prior period amounts have been reclassified to conform to our organizational change as described in Note 16, "Segment Information." Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Total (in millions) Balance as of October 31, 2018: Goodwill $ 497 $ 267 $ 1,116 $ 1,880 Accumulated impairment losses — — (709 ) (709 ) Goodwill as reported 497 267 407 1,171 Foreign currency translation impact 3 — — 3 Balance as of April 30, 2019 $ 500 $ 267 $ 407 $ 1,174 Components of goodwill as of April 30, 2019: Goodwill $ 500 $ 267 $ 1,116 $ 1,883 Accumulated impairment losses — — (709 ) (709 ) Goodwill as reported $ 500 $ 267 $ 407 $ 1,174 The company has not identified any triggering events that indicate an impairment of goodwill in the six months ended April 30, 2019. Other intangible assets as of April 30, 2019 and October 31, 2018 consisted of the following: Other Intangible Assets as of April 30, 2019 Other Intangible Assets as of October 31, 2018 Gross Carrying Amount Accumulated Amortization and Impairments Net Book Value Gross Carrying Amount Accumulated Amortization and Impairments Net Book Value (in millions) Developed technology $ 835 $ 494 $ 341 $ 835 $ 415 $ 420 Backlog 13 13 — 13 13 — Trademark/Tradename 33 17 16 33 14 19 Customer relationships 304 120 184 304 100 204 Non-compete agreements 1 — 1 1 — 1 Total amortizable intangible assets 1,186 644 542 1,186 542 644 In-Process R&D 1 — 1 1 — 1 Total $ 1,187 $ 644 $ 543 $ 1,187 $ 542 $ 645 During the six months ended April 30, 2019 , there was no foreign exchange translation impact to other intangible assets. For both the three and six months ended April 30, 2019 and 2018, amortization of other intangible assets was $51 million and $102 million , respectively. Estimated intangible assets amortization expense for each of the five succeeding fiscal years is as follows: Amortization expense (in millions) 2019 (remainder) $ 101 2020 196 2021 128 2022 52 2023 44 Thereafter 21

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	6 Months Ended
	Apr. 30, 2019
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 April 30, 2019 and October 31, 2018 were as follows: Fair Value Measurements at April 30, 2019 October 31, 2018 Total Level 1 Level 2 Level 3 Other Total Level 1 Level 2 Level 3 Other (in millions) Assets: Short-term Cash equivalents Money market funds $ 754 $ 754 $ — $ — $ — $ 484 $ 484 $ — $ — $ — Derivative instruments (foreign exchange contracts) 2 — 2 — — 6 — 6 — — Long-term Equity investments 33 33 — — — 30 30 — — — Equity investments - other 9 — — — 9 16 — — — 16 Total assets measured at fair value $ 798 $ 787 $ 2 $ — $ 9 $ 536 $ 514 $ 6 $ — $ 16 Liabilities: Short-term Derivative instruments (foreign exchange contracts) $ 4 $ — $ 4 $ — $ — $ 6 $ — $ 6 $ — $ — Long-term Deferred compensation liability 13 — 13 — — 13 — 13 — — Total liabilities measured at fair value $ 17 $ — $ 17 $ — $ — $ 19 $ — $ 19 $ — $ — Net recognized gains (losses) on equity investments were as follows: Three Months Ended Six Months Ended April 30, 2019 (in millions) Net realized gains on investments sold $ 1 $ 1 Net unrealized gains (losses) on investments still held (2 ) 3 Other-than-temporary impairments of investments — — Total $ (1 ) $ 4 Our money market funds and equity investments with readily determinable fair values are measured at fair value using quoted market prices and, therefore, are classified within Level 1 of the fair value hierarchy. Equity investments without readily determinable fair values that are measured at cost adjusted for observable changes in price or impairments are not categorized in the fair value hierarchy and are presented as "other" in the tables above. 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. Equity investments including securities that are earmarked to pay the deferred compensation liability and the deferred compensation liability are reported at fair value, with gains or losses resulting from changes in fair value recognized in earnings. Certain derivative instruments are reported at fair value, with unrealized gains and losses, net of tax, included in accumulated other comprehensive income (loss). During the three and six months ended April 30, 2019, we received proceeds of $7 million from the sale of a cost-method investment, classified as “Equity investments – other,” which was sold at cost. Realized gains and losses from the sale of these instruments are recorded in earnings.

DERIVATIVES

DERIVATIVES	6 Months Ended
	Apr. 30, 2019
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. The changes in the value of the derivative instrument included in the assessment of effectiveness are recognized in accumulated other comprehensive income and reclassified into earnings when the forecasted transaction occurs in the same financial statement line item in the consolidated statement of operations where the earnings effect of the hedged item is presented. If it becomes probable that the forecasted transaction will not occur, the hedge relationship will be de-designated and amounts accumulated in other comprehensive income will be reclassified into earnings in the current period. Gains and losses on the derivative instrument representing hedge components excluded from the assessment of effectiveness (forward points) are recognized immediately in earnings and are presented in the same financial statement line of the consolidated statement of operations where the earnings effect of the hedged item is presented. We record the premium paid (time value) of an option on the date of purchase as an asset. For options designated as cash flow hedges, changes in the time value are excluded from the assessment of hedge effectiveness and are recognized in earnings over the life of the option contract. 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 April 30, 2019 was $3 million . The credit-risk-related contingent features underlying these agreements had not been triggered as of April 30, 2019 . There were 198 foreign exchange forward contracts open as of April 30, 2019 that were designated as cash flow hedges. There were 63 foreign exchange forward contracts as of April 30, 2019 that were not designated as hedging instruments. The aggregated notional amounts by currency and designation as of April 30, 2019 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 $ 14 $ 153 British Pound — (55 ) Singapore Dollar 15 — Malaysian Ringgit 84 1 Japanese Yen (74 ) (38 ) Other currencies (18 ) 1 Total $ 21 $ 62 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 April 30, 2019 and October 31, 2018 were as follows: Fair Values of Derivative Instruments Derivative Assets Derivative Liabilities Fair Value Fair Value Balance Sheet Location April 30, October 31, Balance Sheet Location April 30, October 31, (in millions) (in millions) Derivatives designated as hedging instruments: Cash flow hedges Foreign exchange contracts Other current assets $ 2 $ 5 Other accrued liabilities $ 2 $ 4 Derivatives not designated as hedging instruments: Foreign exchange contracts Other current assets — 1 Other accrued liabilities 2 2 Total derivatives $ 2 $ 6 $ 4 $ 6 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 Six Months Ended April 30, April 30, 2019 2018 2019 2018 (in millions) Derivatives designated as hedging instruments: Cash Flow Hedges Foreign exchange contracts: Gain (loss) recognized in accumulated other comprehensive income $ — $ — $ (2 ) $ 2 Gain (loss) reclassified from accumulated other comprehensive income into earnings: Cost of products $ — $ 1 $ — $ 3 Selling, general and administrative $ — $ — $ (1 ) $ — Amount excluded from effectiveness testing recognized in earnings based on changes in fair value: Cost of products $ — $ — $ 1 $ — Derivatives not designated as hedging instruments: Gain (loss) recognized in other income (expense), net $ (2 ) $ — $ (5 ) $ 1 The estimated amount of existing net loss at April 30, 2019 expected to be reclassified from accumulated other comprehensive income to earnings within the next twelve months is $1 million .

RETIREMENT PLANS AND POST RETIR

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS	6 Months Ended
	Apr. 30, 2019
Defined Benefit Plan [Abstract]
RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS	RETIREMENT PLANS AND POST-RETIREMENT BENEFIT PLANS For the three and six months ended April 30, 2019 and 2018 , our net pension and post-retirement benefit cost (benefit) was comprised of the following: Pensions U.S. Defined Benefit Plans Non-U.S. Defined Benefit U.S. Post-Retirement Three Months Ended April 30, 2019 2018 2019 2018 2019 2018 (in millions) Service cost—benefits earned during the period $ 5 $ 6 $ 4 $ 4 $ — $ 1 Interest cost on benefit obligation 7 6 5 6 2 1 Expected return on plan assets (10 ) (9 ) (20 ) (23 ) (3 ) (3 ) Amortization: Net actuarial loss 2 3 7 7 2 4 Prior service credit (1 ) (2 ) — — (4 ) (4 ) Settlement loss — — — — — $ — Net periodic benefit cost (benefit) $ 3 $ 4 $ (4 ) $ (6 ) $ (3 ) $ (1 ) Pensions U.S. Defined Benefit Plans Non-U.S. Defined Benefit U.S. Post-Retirement Six Months Ended April 30, 2019 2018 2019 2018 2019 2018 (in millions) Service cost—benefits earned during the period $ 10 $ 12 $ 7 $ 7 $ — $ 1 Interest cost on benefit obligation 14 12 11 12 4 3 Expected return on plan assets (21 ) (18 ) (39 ) (44 ) (6 ) (7 ) Amortization: Net actuarial loss 5 6 14 13 4 8 Prior service credit (2 ) (4 ) — — (7 ) (7 ) Settlement loss — — 2 — — — Net periodic benefit cost (benefit) $ 6 $ 8 $ (5 ) $ (12 ) $ (5 ) $ (2 ) We record the service cost component of net periodic benefit cost (benefit) in the same line item as other employee compensation costs and the non-service components of net periodic benefit cost (benefit) such as interest cost, expected return on assets, amortization of prior service cost, and actuarial gains or losses are reported within other income (expense) in the condensed consolidated statement of operations. We did not contribute to our U.S. Defined Benefit Plans or U.S. Post-Retirement Benefit Plan during the three and six months ended April 30, 2019 and 2018 . We contributed $7 million and $15 million to our Non-U.S. Defined Benefit Plans during the three and six months ended April 30, 2019, respectively, and we contributed $7 million and $16 million to our Non-U.S. Defined Benefit Plans during the three and months ended April 30, 2018, respectively. For the remainder of 2019 , we do not expect to contribute to our U.S. Defined Benefit Plans, and we expect to contribute $15 million to our Non-U.S. Defined Benefit Plans. On January 1, 2019 , we transferred a portion of the assets and liabilities of our Switzerland defined benefit plan to an insurance company, resulting in the recognition of a settlement loss of $2 million , which is included in other income (expense) in the condensed consolidated statement of operations.

WARRANTY, COMMITMENTS AND CONTI

WARRANTY, COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Apr. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
WARRANTY, COMMITMENTS AND CONTINGENCIES	WARRANTY, COMMITMENTS AND CONTINGENCIES Standard Warranty 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: Six Months Ended April 30, 2019 2018 (in millions) Beginning balance $ 45 $ 45 Accruals for warranties including change in estimate 15 18 Settlements made during the period (18 ) (17 ) Ending balance $ 42 $ 46 Accruals for warranties due within one year $ 24 $ 26 Accruals for warranties due after one year 18 20 Ending balance $ 42 $ 46 Commitments During the six months ended April 30, 2019, there were no material changes to the operating and capital lease commitments reported in the company’s 2018 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)	6 Months Ended
	Apr. 30, 2019
Debt Disclosure [Abstract]
DEBT	DEBT The following table summarizes the components of our long-term debt: April 30, 2019 October 31, 2018 (in millions) 2019 senior unsecured notes at 3.30% (net of unamortized costs of zero and $1) $ 500 $ 499 2024 senior unsecured notes at 4.55% (net of unamortized costs of $3 and $3) 597 597 2027 senior unsecured notes at 4.60% (net of unamortized costs of $5 and $6) 695 694 Total debt 1,792 1,790 Less: short-term debt 500 499 Total long-term debt $ 1,292 $ 1,291 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. As of April 30, 2019, we had no borrowings outstanding under the Revolving Credit Facility. We were in compliance with the covenants of the Revolving Credit Facility during the six months ended April 30, 2019. 2019 Senior Notes There have been no changes to the principal, maturity, interest rates and interest payment terms of the senior notes during the six months ended April 30, 2019 as compared to the senior notes described in our Annual Report on Form 10-K for the fiscal year ended October 31, 2018. Long-Term Debt There have been no changes to the principal, maturity, interest rates and interest payment terms of the senior notes during the six months ended April 30, 2019 as compared to the senior notes described in our Annual Report on Form 10-K for the fiscal year ended October 31, 2018. As of April 30, 2019 and October 31, 2018, we had $28 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 $57 million and $3 million as of April 30, 2019 and October 31, 2018, respectively.

STOCKHOLDERS' EQUITY

STOCKHOLDERS' EQUITY	6 Months Ended
	Apr. 30, 2019
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 six months ended April 30, 2019, we repurchased 1,030,120 shares of common stock for $70 million . There were $1 million stock repurchases pending settlement as of April 30, 2019. For the six months ended April 30, 2018, we repurchased 773,352 shares of common stock for $40 million . There were $12 million stock repurchases pending settlement as of April 30, 2018. Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive loss by component and related tax effects for the three and six months ended April 30, 2019 and 2018 were as follows: Unrealized gain (loss) on investments 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 January 31, 2019 $ — $ (30 ) $ (432 ) $ 16 $ (3 ) $ (449 ) Other comprehensive income (loss) before reclassifications — (16 ) — — — (16 ) Amounts reclassified out of accumulated other comprehensive loss — — 12 (5 ) — 7 Tax (expense) benefit — — (4 ) 1 — (3 ) Other comprehensive income (loss) — (16 ) 8 (4 ) — (12 ) As of April 30, 2019 $ — $ (46 ) $ (424 ) $ 12 $ (3 ) $ (461 ) As of October 31, 2018 $ — $ (60 ) $ (445 ) $ 19 $ (2 ) $ (488 ) Other comprehensive income (loss) before reclassifications — 14 2 — (2 ) 14 Amounts reclassified out of accumulated other comprehensive loss — — 26 (9 ) 1 18 Tax (expense) benefit — — (7 ) 2 — (5 ) Other comprehensive income (loss) — 14 21 (7 ) (1 ) 27 As of April 30, 2019 $ — $ (46 ) $ (424 ) $ 12 $ (3 ) $ (461 ) As of January 31, 2018 $ 12 $ 2 $ (458 ) $ 31 $ 1 $ (412 ) Other comprehensive income (loss) before reclassifications (1 ) (13 ) 1 — — (13 ) Amounts reclassified out of accumulated other comprehensive loss — — 14 (6 ) (1 ) 7 Tax (expense) benefit 1 — (4 ) 2 — (1 ) Other comprehensive income (loss) — (13 ) 11 (4 ) (1 ) (7 ) As of April 30, 2018 $ 12 $ (11 ) $ (447 ) $ 27 $ — $ (419 ) As of October 31, 2017 $ 14 $ (39 ) $ (468 ) $ 35 $ 1 $ (457 ) Other comprehensive income (loss) before reclassifications (3 ) 28 1 — 2 28 Amounts reclassified out of accumulated other comprehensive loss — — 27 (11 ) (3 ) 13 Tax (expense) benefit 1 — (7 ) 3 — (3 ) Other comprehensive income (loss) (2 ) 28 21 (8 ) (1 ) 38 As of April 30, 2018 $ 12 $ (11 ) $ (447 ) $ 27 $ — $ (419 ) Reclassifications out of accumulated other comprehensive loss for the three and six months ended April 30, 2019 and 2018 were as follows: Details about Accumulated Other Comprehensive Loss Components Affected Line Item in Statement of Operations Three Months Ended Six Months Ended April 30, April 30, 2019 2018 2019 2018 Unrealized gain (loss) on derivatives $ — $ 1 $ — $ 3 Cost of products — — (1 ) — Selling, general and administrative — — — — Provision for income taxes — 1 (1 ) 3 Net of income tax Net defined benefit pension cost and post retirement plan costs: Actuarial net loss (12 ) (14 ) (26 ) (27 ) Prior service credits 5 6 9 11 (7 ) (8 ) (17 ) (16 ) Total before income tax 3 2 4 4 Provision for income taxes (4 ) (6 ) (13 ) (12 ) Net of income tax Total reclassifications for the period $ (4 ) $ (5 ) $ (14 ) $ (9 ) 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 Benefit Plans").

SEGMENT INFORMATION

SEGMENT INFORMATION	6 Months Ended
	Apr. 30, 2019
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION We provide electronic design and test solutions, which are used in the design, development, manufacture, installation, deployment, validation, optimization and secure operation of electronics systems, to communications, networking and electronics industries. We also offer customization, consulting and optimization services throughout the customer's product lifecycle, including start-up assistance, instrument productivity, application services and instrument calibration and repair. In the first quarter of fiscal year 2019, in recognition of Keysight’s customer solutions-oriented go-to-market strategy and to fully reflect our services delivery within the markets served and further enable services growth, we completed an organizational change to align our services business with our customers and end markets. With this change, services that were previously reported as the Services Solutions Group are now reported as part of the Communications Solutions Group and Electronic Industrial Solutions Group. As a result, Keysight now has three segments: Communications Solutions Group, Electronic Industrial Solutions Group and Ixia Solutions Group. The new organizational structure continues to include centralized enterprise functions that provide support across the groups. 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 three 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, systems and related services used in the simulation, design, validation, manufacturing, installation and optimization of electronic equipment. The Electronic Industrial Solutions Group provides test and measurement solutions to customers across a broad set of electronic industrial end markets, focusing on high-growth applications in the automotive and energy industry and measurement solutions for semiconductor design and manufacturing, consumer electronics, education and general electronics manufacturing. The group provides electronic design and test software, instruments, systems and related services used in the simulation, design, validation, manufacturing, installation and optimization of electronic equipment. The Ixia Solutions Group helps customers worldwide, including enterprises, service providers, network equipment manufacturers, and governments, to validate new products before shipping and secure ongoing operation of their networks with better visibility and security. The test, visibility and security products help organizations and their customers strengthen their physical and virtual networks. The group’s product solutions consist of high-performance hardware platforms, software applications and services, including warranty and maintenance offerings. A significant portion of the segments' 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 was not allocated these shared services and infrastructure charges, with the exception of net periodic benefit costs, until fiscal 2019. The following tables reflect the results of our reportable 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. Prior period amounts have been revised to conform to the new organizational structure. The profitability of each of the segments is measured after excluding share-based compensation expense, amortization of acquisition-related balances, acquisition and integration costs, restructuring and related costs, 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 Total Segments (in millions) Three months ended April 30, 2019: Total net revenue $ 676 $ 299 $ 115 $ 1,090 Amortization of acquisition-related balances — — 3 3 Total segment revenue $ 676 $ 299 $ 118 $ 1,093 Segment income from operations $ 187 $ 78 $ 3 $ 268 Three months ended April 30, 2018: Total net revenue $ 626 $ 282 $ 82 $ 990 Amortization of acquisition-related balances 1 — 8 9 Total segment revenue $ 627 $ 282 $ 90 $ 999 Segment income (loss) from operations $ 132 $ 68 $ (10 ) $ 190 Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Total Segments (in millions) Six months ended April 30, 2019: Total net revenue $ 1,299 $ 556 $ 241 $ 2,096 Amortization of acquisition-related balances — — 6 6 Total segment revenue $ 1,299 $ 556 $ 247 $ 2,102 Segment income from operations $ 325 $ 132 $ 15 $ 472 Six months ended April 30, 2018: Total net revenue $ 1,126 $ 511 $ 190 $ 1,827 Amortization of acquisition-related balances 1 — 27 28 Total segment revenue $ 1,127 $ 511 $ 217 $ 1,855 Segment income from operations $ 195 $ 106 $ 8 $ 309 The following table reconciles reportable operating segments’ income from operations to our total enterprise income before taxes: Three Months Ended Six Months Ended April 30, April 30, 2019 2018 2019 2018 (in millions) Total reportable operating segments' income from operations $ 268 $ 190 $ 472 $ 309 Share-based compensation expense (23 ) (15 ) (50 ) (34 ) Amortization of acquisition-related balances (54 ) (65 ) (108 ) (154 ) Acquisition and integration costs — (17 ) (2 ) (36 ) Restructuring and related costs (6 ) (11 ) (6 ) (13 ) Northern California wildfire-related costs — — — (7 ) Other — 4 — 4 Income from operations, as reported 185 86 306 69 Interest income 6 2 10 5 Interest expense (20 ) (21 ) (40 ) (43 ) Other income (expense), net 22 16 37 29 Income before taxes, as reported $ 193 $ 83 $ 313 $ 60 The following table presents assets directly managed by each segment. Unallocated assets primarily consist of cash and cash equivalents, investments and other assets. Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Total Segments (in millions) Assets: As of April 30, 2019 $ 2,126 $ 912 $ 1,403 $ 4,441 As of October 31, 2018 $ 2,115 $ 888 $ 1,327 $ 4,330

NORTHERN CALIFORNIA WILDFIRES I

NORTHERN CALIFORNIA WILDFIRES IMPACT (Notes)	6 Months Ended
	Apr. 30, 2019
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. For the three and six months ended April 30, 2019, we recognized immaterial costs, net of expected insurance recoveries. For the three and six months ended April 30, 2018, we recognized costs of zero and $7 million , respectively, net of $32 million and $63 million , respectively, of expected insurance recoveries. Expenses were primarily for cleaning and restoration activities, write-off of damaged fixed assets and other direct costs related to recovery from this event. For the six months ended April 30, 2019 and 2018, we received insurance proceeds of $22 million and $40 million , respectively, for covered expenses incurred. Combined with $68 million received in fiscal 2018, we have received insurance proceeds related to recovery from the northern California wildfires of $90 million to date, which has substantially covered our total fire-related expenses in excess of our $10 million self-insured retention amount. In addition, for the six months ended April 30, 2019 and 2018, we made investments in property, plant and equipment related to fire recovery of $7 million and $9 million , respectively. Combined with capital expenditures of $27 million in fiscal 2018, we have made investments in property, plant and equipment related to fire recovery of $34 million to date that are expected to be covered by insurance. We currently estimate additional insurance proceeds of $30 million to $40 million in fiscal 2019. In certain cases, our insurance coverage exceeds the amount of the covered losses, but no gain contingencies have been recognized as our ability to realize those gains remains uncertain for financial reporting purposes. 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 ASU 2016-15 (Tables)	6 Months Ended
	Apr. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]	Six Months Ended April 30, 2018 As Originally Reported As Adjusted Change (in millions) Net cash provided by operating activities $ 282 $ 282 $ — Net cash used in investing activities $ (49 ) $ (46 ) $ 3 Net cash used in financing activities $ (271 ) $ (274 ) $ (3 ) Three Months Ended Six Months Ended As Originally Reported As Adjusted Effect of Change As Originally Reported As Adjusted Effect of Change (in millions) (in millions) Cost of products $ 367 $ 370 $ 3 $ 704 $ 709 $ 5 Cost of services $ 80 $ 81 $ 1 $ 153 $ 154 $ 1 Research and development $ 156 $ 160 $ 4 $ 302 $ 310 $ 8 Selling, general and administrative $ 299 $ 305 $ 6 $ 588 $ 600 $ 12 Other income (expense), net $ 2 $ 16 $ 14 $ 3 $ 29 $ 26

NEW ACCOUNTING PRONOUNCEMENTS_2

NEW ACCOUNTING PRONOUNCEMENTS NEW REVENUE RECOGNITION (Tables)	6 Months Ended
	Apr. 30, 2019
Revenue from Contract with Customer [Abstract]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	The cumulative effect of initially applying the new revenue standard to all open contracts as of November 1, 2018 was as follows: October 31, Adjustments Due to ASC 606 November 1, (in millions) Assets: Accounts receivable, net $ 624 $ 7 $ 631 Other current assets 222 28 250 Long-term deferred tax assets 750 (15 ) 735 Other assets 279 3 282 Liabilities: Deferred revenue $ 334 $ (53 ) $ 281 Income and other taxes payable 42 1 43 Other accrued liabilities 69 7 76 Long-term deferred revenue 127 (11 ) 116 Other long-term liabilities 287 3 290 Stockholders' equity: Retained earnings $ 1,212 $ 76 $ 1,288
Schedule of Prospective Adoption of New Accounting Pronouncements [Table Text Block]	The following tables summarize the impact of ASC 606 on our condensed consolidated financial statements: Three months ended April 30, 2019 As Reported Balances Without Adoption of ASC 606 Effect of Change (in millions) Net revenue: Products $ 911 $ 903 $ 8 Services and other 179 184 (5 ) Total net revenue 1,090 1,087 3 Costs and expenses: Cost of products 360 360 — Cost of services and other 82 82 — Total costs 442 442 — Research and development 171 171 — Selling, general and administrative 300 298 2 Other operating expense (income), net (8 ) (8 ) — Total costs and expenses 905 903 2 Income from operations 185 184 1 Interest income 6 6 — Interest expense (20 ) (20 ) — Other income (expense), net 22 22 — Income before taxes 193 192 1 Provision for income taxes 40 40 — Net income $ 153 $ 152 $ 1 Net income per share: Basic $ 0.81 $ 0.81 $ — Diluted $ 0.80 $ 0.79 $ 0.01 Six months ended April 30, 2019 As Reported Balances Without Adoption of ASC 606 Effect of Change (in millions) Net revenue: Products $ 1,748 $ 1,725 $ 23 Services and other 348 354 (6 ) Total net revenue 2,096 2,079 17 Costs and expenses: Cost of products 707 706 1 Cost of services and other 163 163 — Total costs 870 869 1 Research and development 344 344 — Selling, general and administrative 588 585 3 Other operating expense (income), net (12 ) (12 ) — Total costs and expenses 1,790 1,786 4 Income from operations 306 293 13 Interest income 10 10 — Interest expense (40 ) (40 ) — Other income (expense), net 37 37 — Income before taxes 313 300 13 Provision for income taxes 46 44 2 Net income $ 267 $ 256 $ 11 Net income per share: Basic $ 1.42 $ 1.36 $ 0.06 Diluted $ 1.40 $ 1.34 $ 0.06 April 30, 2019 As Reported Balances Without Adoption of ASC 606 Effect of Change Higher/(Lower) (in millions) Assets: Accounts receivable, net $ 660 $ 652 $ 8 Inventory 660 661 (1 ) Other current assets 227 202 25 Long-term deferred tax assets 727 744 (17 ) Other assets 317 314 3 Liabilities: Deferred revenue $ 333 $ 397 $ (64 ) Income and other taxes payable 61 60 1 Other accrued liabilities 74 67 7 Long-term deferred revenue 150 166 (16 ) Other long-term liabilities 251 248 3 Stockholders' equity: Retained earnings $ 1,555 $ 1,468 $ 87

NEW ACCOUNTING PRONOUNCEMENTS_3

NEW ACCOUNTING PRONOUNCEMENTS NEW ACCOUNTING PRONOUNCEMENTS ASU 2017-07 (Tables)	6 Months Ended
	Apr. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]	Six Months Ended April 30, 2018 As Originally Reported As Adjusted Change (in millions) Net cash provided by operating activities $ 282 $ 282 $ — Net cash used in investing activities $ (49 ) $ (46 ) $ 3 Net cash used in financing activities $ (271 ) $ (274 ) $ (3 ) Three Months Ended Six Months Ended As Originally Reported As Adjusted Effect of Change As Originally Reported As Adjusted Effect of Change (in millions) (in millions) Cost of products $ 367 $ 370 $ 3 $ 704 $ 709 $ 5 Cost of services $ 80 $ 81 $ 1 $ 153 $ 154 $ 1 Research and development $ 156 $ 160 $ 4 $ 302 $ 310 $ 8 Selling, general and administrative $ 299 $ 305 $ 6 $ 588 $ 600 $ 12 Other income (expense), net $ 2 $ 16 $ 14 $ 3 $ 29 $ 26

REVENUE DISSAGGREGATION OF REVE

REVENUE DISSAGGREGATION OF REVENUE (Tables)	6 Months Ended
	Apr. 30, 2019
Revenue Recognition [Abstract]
Disaggregation of Revenue [Table Text Block]	Disaggregation of Revenue We disaggregate our revenue from contracts with customers by geographic region, end market, and timing of transfer of products and services to customers, as we believe these categories best depict how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. Disaggregated revenue is presented for each of our three reportable segments. Three Months Ended April 30, 2019 Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Total (in millions) Region Americas $ 294 $ 66 $ 65 $ 425 Europe 90 71 18 179 Asia Pacific 292 162 32 486 Total net revenue $ 676 $ 299 $ 115 $ 1,090 End Market Aerospace, Defense & Government $ 245 $ — $ — $ 245 Commercial Communications 431 — — 431 Electronic Industrial — 299 — 299 Ixia Solutions — — 115 115 Total net revenue $ 676 $ 299 $ 115 $ 1,090 Timing of Revenue Recognition Revenue recognized at a point in time $ 619 $ 274 $ 68 $ 961 Revenue recognized over time 57 25 47 129 Total net revenue $ 676 $ 299 $ 115 $ 1,090 Six Months Ended April 30, 2019 Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Total (in millions) Region Americas $ 566 $ 123 $ 139 $ 828 Europe 186 134 38 358 Asia Pacific 547 299 64 910 Total net revenue $ 1,299 $ 556 $ 241 $ 2,096 End Market Aerospace, Defense & Government $ 468 $ — $ — $ 468 Commercial Communications 831 — — 831 Electronic Industrial — 556 — 556 Ixia Solutions — — 241 241 Total net revenue $ 1,299 $ 556 $ 241 $ 2,096 Timing of Revenue Recognition Revenue recognized at a point in time $ 1,189 $ 509 $ 150 $ 1,848 Revenue recognized over time 110 47 91 248 Total net revenue $ 1,299 $ 556 $ 241 $ 2,096

REVENUE CAPITALIZED CONTRACTUAL

REVENUE CAPITALIZED CONTRACTUAL COST (Tables)	6 Months Ended
	Apr. 30, 2019
Capitalized Contract Cost [Line Items]
Capitalized Contract Cost [Abstract]	The following table provides a roll-forward of our capitalized contract costs, current and non-current: Six Months Ended April 30, 2019 (in millions) Balance at October 31, 2018 $ — Costs capitalized on November 1, 2018 due to ASC 606 adoption 29 Costs capitalized during the period 33 Costs amortized during the period (36 ) Balance at April 30, 2019 $ 26

REVENUE CONTRACT LIABILITIES (T

REVENUE CONTRACT LIABILITIES (Tables)	6 Months Ended
	Apr. 30, 2019
Revenue Recognition and Deferred Revenue [Abstract]
Contract with Customer, Asset and Liability [Table Text Block]	Changes in contract liabilities, current and non-current, during the six months ended April 30, 2019 were as follows: Contract Liabilities (in millions) Balance at October 31, 2018 $ 461 Impact of adopting new revenue standard (64 ) Balance at November 1, 2018 397 Deferral of revenue billed in current period, net of recognition 276 Revenue recognized that was deferred as of the beginning of the period (191 ) Foreign currency translation impact 1 Balance at April 30, 2019 $ 483

REVENUE Remaning Performace Obl

REVENUE Remaning Performace Obligations (Tables)	6 Months Ended
	Apr. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	Revenue expected to be recognized in any future period related to remaining performance obligations, excluding revenue pertaining to contracts that have an original expected duration of one year or less, was approximately $280 million as of April 30, 2019 , and represents the company’s obligation to deliver products and services and obtain customer acceptance on delivered products. Since we typically invoice customers at contract inception, this amount is included in our current and long-term deferred revenue balances. As of April 30, 2019 , we expect to recognize approximately 26% of the revenue related to these unsatisfied performance obligations during the remainder of 2019, 37% during 2020, and 37% thereafter.

SHARE-BASED COMPENSATION (Table

SHARE-BASED COMPENSATION (Tables)	6 Months Ended
	Apr. 30, 2019
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 Six Months Ended April 30, April 30, 2019 2018 2019 2018 (in millions) Cost of products and services $ 5 $ 4 $ 9 $ 7 Research and development 3 2 9 6 Selling, general and administrative 15 9 32 21 Total share-based compensation expense $ 23 $ 15 $ 50 $ 34
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 awards granted under the LTP Program that are based on total shareholder return ("TSR"): Three Months Ended Six Months Ended April 30, April 30, 2019 2018 2019 2018 Volatility of Keysight shares 26 % 25 % 25 % 25 % Volatility of selected index 13 % 14 % 12 % 14 % Price-wise correlation with selected peers 57 % 57 % 57 % 57 %

NET INCOME PER SHARE (Tables)

NET INCOME PER SHARE (Tables)	6 Months Ended
	Apr. 30, 2019
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 per share computations for the periods presented below: Three Months Ended Six Months Ended April 30, April 30, 2019 2018 2019 2018 (in millions) Numerator: Net income $ 153 $ 64 $ 267 $ 158 Denominator: Basic weighted-average shares 188 188 188 187 Potential common shares— stock options and other employee stock plans 3 2 3 3 Diluted weighted-average shares 191 190 191 190

SUPPLEMENT CASH FLOW INFORMAT_2

SUPPLEMENT CASH FLOW INFORMATION (Tables)	6 Months Ended
	Apr. 30, 2019
Other Significant Noncash Transactions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Six months ended April 30, 2019 2018 (in millions) Non-cash investing activities Increase (decrease) in unpaid capital expenditures in accounts payable $ 7 $ (9 ) $ 7 $ (9 ) Non-cash financing activities Treasury stock repurchases pending settlement in other accrued liabilities $ (1 ) $ (12 ) $ (1 ) $ (12 ) The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the condensed consolidated balance sheet to the amount shown in the condensed consolidated statement of cash flows: Six months ended April 30, 2019 2018 (in millions) Cash and cash equivalents $ 1,277 $ 784 Restricted cash included in other current assets 2 — Restricted cash included in other assets 1 2 Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 1,280 $ 786 Restricted cash consisted primarily of deposits held as collateral against bank guarantees.

INVENTORY (Tables)

INVENTORY (Tables)	6 Months Ended
	Apr. 30, 2019
Inventory, Net [Abstract]
INVENTORY	April 30, October 31, (in millions) Finished goods $ 290 $ 283 Purchased parts and fabricated assemblies 370 336 Total inventory $ 660 $ 619

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	6 Months Ended
	Apr. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill balances and movements for each reportable segments during the period	oodwill balances as of April 30, 2019 and October 31, 2018 and the activity for the six months ended April 30, 2019 for each of our reportable operating segments were as follows. Prior period amounts have been reclassified to conform to our organizational change as described in Note 16, "Segment Information." Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Total (in millions) Balance as of October 31, 2018: Goodwill $ 497 $ 267 $ 1,116 $ 1,880 Accumulated impairment losses — — (709 ) (709 ) Goodwill as reported 497 267 407 1,171 Foreign currency translation impact 3 — — 3 Balance as of April 30, 2019 $ 500 $ 267 $ 407 $ 1,174 Components of goodwill as of April 30, 2019: Goodwill $ 500 $ 267 $ 1,116 $ 1,883 Accumulated impairment losses — — (709 ) (709 ) Goodwill as reported $ 500 $ 267 $ 407 $ 1,174
Components of other intangibles during the period	The company has not identified any triggering events that indicate an impairment of goodwill in the six months ended April 30, 2019. Other intangible assets as of April 30, 2019 and October 31, 2018 consisted of the following: Other Intangible Assets as of April 30, 2019 Other Intangible Assets as of October 31, 2018 Gross Carrying Amount Accumulated Amortization and Impairments Net Book Value Gross Carrying Amount Accumulated Amortization and Impairments Net Book Value (in millions) Developed technology $ 835 $ 494 $ 341 $ 835 $ 415 $ 420 Backlog 13 13 — 13 13 — Trademark/Tradename 33 17 16 33 14 19 Customer relationships 304 120 184 304 100 204 Non-compete agreements 1 — 1 1 — 1 Total amortizable intangible assets 1,186 644 542 1,186 542 644 In-Process R&D 1 — 1 1 — 1 Total $ 1,187 $ 644 $ 543 $ 1,187 $ 542 $ 645

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	6 Months Ended
	Apr. 30, 2019
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 April 30, 2019 and October 31, 2018 were as follows: Fair Value Measurements at April 30, 2019 October 31, 2018 Total Level 1 Level 2 Level 3 Other Total Level 1 Level 2 Level 3 Other (in millions) Assets: Short-term Cash equivalents Money market funds $ 754 $ 754 $ — $ — $ — $ 484 $ 484 $ — $ — $ — Derivative instruments (foreign exchange contracts) 2 — 2 — — 6 — 6 — — Long-term Equity investments 33 33 — — — 30 30 — — — Equity investments - other 9 — — — 9 16 — — — 16 Total assets measured at fair value $ 798 $ 787 $ 2 $ — $ 9 $ 536 $ 514 $ 6 $ — $ 16 Liabilities: Short-term Derivative instruments (foreign exchange contracts) $ 4 $ — $ 4 $ — $ — $ 6 $ — $ 6 $ — $ — Long-term Deferred compensation liability 13 — 13 — — 13 — 13 — — Total liabilities measured at fair value $ 17 $ — $ 17 $ — $ — $ 19 $ — $ 19 $ — $ — Net recognized gains (losses) on equity investments were as follows:

FAIR VALUE MEASUREMENTS FAIR VA

FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Net recognized gains losses on equity securities) (Tables)	6 Months Ended
	Apr. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Gain (Loss) on Securities [Table Text Block]	Net recognized gains (losses) on equity investments were as follows: Three Months Ended Six Months Ended April 30, 2019 (in millions) Net realized gains on investments sold $ 1 $ 1 Net unrealized gains (losses) on investments still held (2 ) 3 Other-than-temporary impairments of investments — — Total $ (1 ) $ 4

DERIVATIVES (Tables)

DERIVATIVES (Tables)	6 Months Ended
	Apr. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Aggregated notional amounts by currency and designation	The aggregated notional amounts by currency and designation as of April 30, 2019 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 $ 14 $ 153 British Pound — (55 ) Singapore Dollar 15 — Malaysian Ringgit 84 1 Japanese Yen (74 ) (38 ) Other currencies (18 ) 1 Total $ 21 $ 62
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 April 30, 2019 and October 31, 2018 were as follows: Fair Values of Derivative Instruments Derivative Assets Derivative Liabilities Fair Value Fair Value Balance Sheet Location April 30, October 31, Balance Sheet Location April 30, October 31, (in millions) (in millions) Derivatives designated as hedging instruments: Cash flow hedges Foreign exchange contracts Other current assets $ 2 $ 5 Other accrued liabilities $ 2 $ 4 Derivatives not designated as hedging instruments: Foreign exchange contracts Other current assets — 1 Other accrued liabilities 2 2 Total derivatives $ 2 $ 6 $ 4 $ 6
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 Six Months Ended April 30, April 30, 2019 2018 2019 2018 (in millions) Derivatives designated as hedging instruments: Cash Flow Hedges Foreign exchange contracts: Gain (loss) recognized in accumulated other comprehensive income $ — $ — $ (2 ) $ 2 Gain (loss) reclassified from accumulated other comprehensive income into earnings: Cost of products $ — $ 1 $ — $ 3 Selling, general and administrative $ — $ — $ (1 ) $ — Amount excluded from effectiveness testing recognized in earnings based on changes in fair value: Cost of products $ — $ — $ 1 $ — Derivatives not designated as hedging instruments: Gain (loss) recognized in other income (expense), net $ (2 ) $ — $ (5 ) $ 1

RETIREMENT PLANS AND POST RET_2

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Tables)	6 Months Ended
	Apr. 30, 2019
Defined Benefit Plan [Abstract]
Schedule of net pension and post-retirement benefit costs	For the three and six months ended April 30, 2019 and 2018 , our net pension and post-retirement benefit cost (benefit) was comprised of the following: Pensions U.S. Defined Benefit Plans Non-U.S. Defined Benefit U.S. Post-Retirement Three Months Ended April 30, 2019 2018 2019 2018 2019 2018 (in millions) Service cost—benefits earned during the period $ 5 $ 6 $ 4 $ 4 $ — $ 1 Interest cost on benefit obligation 7 6 5 6 2 1 Expected return on plan assets (10 ) (9 ) (20 ) (23 ) (3 ) (3 ) Amortization: Net actuarial loss 2 3 7 7 2 4 Prior service credit (1 ) (2 ) — — (4 ) (4 ) Settlement loss — — — — — $ — Net periodic benefit cost (benefit) $ 3 $ 4 $ (4 ) $ (6 ) $ (3 ) $ (1 ) Pensions U.S. Defined Benefit Plans Non-U.S. Defined Benefit U.S. Post-Retirement Six Months Ended April 30, 2019 2018 2019 2018 2019 2018 (in millions) Service cost—benefits earned during the period $ 10 $ 12 $ 7 $ 7 $ — $ 1 Interest cost on benefit obligation 14 12 11 12 4 3 Expected return on plan assets (21 ) (18 ) (39 ) (44 ) (6 ) (7 ) Amortization: Net actuarial loss 5 6 14 13 4 8 Prior service credit (2 ) (4 ) — — (7 ) (7 ) Settlement loss — — 2 — — — Net periodic benefit cost (benefit) $ 6 $ 8 $ (5 ) $ (12 ) $ (5 ) $ (2 )

WARRANTY, COMMITMENTS AND CON_2

WARRANTY, COMMITMENTS AND CONTINGENCIES (Tables)	6 Months Ended
	Apr. 30, 2019
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: Six Months Ended April 30, 2019 2018 (in millions) Beginning balance $ 45 $ 45 Accruals for warranties including change in estimate 15 18 Settlements made during the period (18 ) (17 ) Ending balance $ 42 $ 46 Accruals for warranties due within one year $ 24 $ 26 Accruals for warranties due after one year 18 20 Ending balance $ 42 $ 46

DEBT (Tables)

DEBT (Tables)	6 Months Ended
	Apr. 30, 2019
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The following table summarizes the components of our long-term debt: April 30, 2019 October 31, 2018 (in millions) 2019 senior unsecured notes at 3.30% (net of unamortized costs of zero and $1) $ 500 $ 499 2024 senior unsecured notes at 4.55% (net of unamortized costs of $3 and $3) 597 597 2027 senior unsecured notes at 4.60% (net of unamortized costs of $5 and $6) 695 694 Total debt 1,792 1,790 Less: short-term debt 500 499 Total long-term debt $ 1,292 $ 1,291

STOCKHOLDERS' EQUITY (Tables)

STOCKHOLDERS' EQUITY (Tables)	6 Months Ended
	Apr. 30, 2019
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 six months ended April 30, 2019 and 2018 were as follows: Unrealized gain (loss) on investments 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 January 31, 2019 $ — $ (30 ) $ (432 ) $ 16 $ (3 ) $ (449 ) Other comprehensive income (loss) before reclassifications — (16 ) — — — (16 ) Amounts reclassified out of accumulated other comprehensive loss — — 12 (5 ) — 7 Tax (expense) benefit — — (4 ) 1 — (3 ) Other comprehensive income (loss) — (16 ) 8 (4 ) — (12 ) As of April 30, 2019 $ — $ (46 ) $ (424 ) $ 12 $ (3 ) $ (461 ) As of October 31, 2018 $ — $ (60 ) $ (445 ) $ 19 $ (2 ) $ (488 ) Other comprehensive income (loss) before reclassifications — 14 2 — (2 ) 14 Amounts reclassified out of accumulated other comprehensive loss — — 26 (9 ) 1 18 Tax (expense) benefit — — (7 ) 2 — (5 ) Other comprehensive income (loss) — 14 21 (7 ) (1 ) 27 As of April 30, 2019 $ — $ (46 ) $ (424 ) $ 12 $ (3 ) $ (461 ) As of January 31, 2018 $ 12 $ 2 $ (458 ) $ 31 $ 1 $ (412 ) Other comprehensive income (loss) before reclassifications (1 ) (13 ) 1 — — (13 ) Amounts reclassified out of accumulated other comprehensive loss — — 14 (6 ) (1 ) 7 Tax (expense) benefit 1 — (4 ) 2 — (1 ) Other comprehensive income (loss) — (13 ) 11 (4 ) (1 ) (7 ) As of April 30, 2018 $ 12 $ (11 ) $ (447 ) $ 27 $ — $ (419 ) As of October 31, 2017 $ 14 $ (39 ) $ (468 ) $ 35 $ 1 $ (457 ) Other comprehensive income (loss) before reclassifications (3 ) 28 1 — 2 28 Amounts reclassified out of accumulated other comprehensive loss — — 27 (11 ) (3 ) 13 Tax (expense) benefit 1 — (7 ) 3 — (3 ) Other comprehensive income (loss) (2 ) 28 21 (8 ) (1 ) 38 As of April 30, 2018 $ 12 $ (11 ) $ (447 ) $ 27 $ — $ (419 )
Reclassification out of Accumulated Other Comprehensive Income	Reclassifications out of accumulated other comprehensive loss for the three and six months ended April 30, 2019 and 2018 were as follows: Details about Accumulated Other Comprehensive Loss Components Affected Line Item in Statement of Operations Three Months Ended Six Months Ended April 30, April 30, 2019 2018 2019 2018 Unrealized gain (loss) on derivatives $ — $ 1 $ — $ 3 Cost of products — — (1 ) — Selling, general and administrative — — — — Provision for income taxes — 1 (1 ) 3 Net of income tax Net defined benefit pension cost and post retirement plan costs: Actuarial net loss (12 ) (14 ) (26 ) (27 ) Prior service credits 5 6 9 11 (7 ) (8 ) (17 ) (16 ) Total before income tax 3 2 4 4 Provision for income taxes (4 ) (6 ) (13 ) (12 ) Net of income tax Total reclassifications for the period $ (4 ) $ (5 ) $ (14 ) $ (9 )

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	6 Months Ended
	Apr. 30, 2019
Segment Reporting [Abstract]
Segment Reporting, Description of All Other Segments	Communications Solutions Group Electronic Industrial Solutions Group Ixia Solutions Group Total Segments (in millions) Three months ended April 30, 2019: Total net revenue $ 676 $ 299 $ 115 $ 1,090 Amortization of acquisition-related balances — — 3 3 Total segment revenue $ 676 $ 299 $ 118 $ 1,093 Segment income from operations $ 187 $ 78 $ 3 $ 268 Three months ended April 30, 2018: Total net revenue $ 626 $ 282 $ 82 $ 990 Amortization of acquisition-related balances 1 — 8 9 Total segment revenue $ 627 $ 282 $ 90 $ 999 Segment income (loss) from operations $ 132 $ 68 $ (10 ) $ 190

SEGMENT INFORMATION Segment Pro

SEGMENT INFORMATION Segment Profitability (Tables)	6 Months Ended
	Apr. 30, 2019
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 Six Months Ended April 30, April 30, 2019 2018 2019 2018 (in millions) Total reportable operating segments' income from operations $ 268 $ 190 $ 472 $ 309 Share-based compensation expense (23 ) (15 ) (50 ) (34 ) Amortization of acquisition-related balances (54 ) (65 ) (108 ) (154 ) Acquisition and integration costs — (17 ) (2 ) (36 ) Restructuring and related costs (6 ) (11 ) (6 ) (13 ) Northern California wildfire-related costs — — — (7 ) Other — 4 — 4 Income from operations, as reported 185 86 306 69 Interest income 6 2 10 5 Interest expense (20 ) (21 ) (40 ) (43 ) Other income (expense), net 22 16 37 29 Income before taxes, as reported $ 193 $ 83 $ 313 $ 60

NORTHERN CALIFORNIA WILDFIRES_2

NORTHERN CALIFORNIA WILDFIRES IMPACT (Tables)	6 Months Ended
	Apr. 30, 2019
Unusual or Infrequent Item, or Both [Line Items]
Schedule of Unusual or Infrequent Items, or Both [Table Text Block]

NEW ACCOUNTING PRONOUNCEMENTS E

NEW ACCOUNTING PRONOUNCEMENTS Effect of ASU 2016-15 adoption - Adjustments in Cash flow (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities	$ 461	$ 282
Net cash used in investing activities	(49)	(46)
Net cash used in financing activities	$ (54)	(274)
As originally reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities		282
Net cash used in investing activities		(49)
Net cash used in financing activities		(271)
Change | Accounting Standards Update 2016-15 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities		0
Net cash used in investing activities		3
Net cash used in financing activities		$ (3)

NEW ACCOUNTING PRONOUNCEMENTS_4

NEW ACCOUNTING PRONOUNCEMENTS Effect of ASC 606 adoption on income statement (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018	Nov. 01, 2018	Oct. 31, 2018
Net revenue:
Revenues	$ 1,090	$ 990	$ 2,096	$ 1,827
Costs and Expenses [Abstract]
Cost of Goods and Services Sold	442	451	870	863
Research and development	171	160	344	310
Selling, general and administrative	300	305	588	600
Other operating expense (income), net	(8)	(12)	(12)	(15)
Total costs and expenses	905	904	1,790	1,758
Income from operations	185	86	306	69
Interest income	6	2	10	5
Interest expense	(20)	(21)	(40)	(43)
Other income (expense), net	22	16	37	29
Income before taxes	193	83	313	60
Provision for income taxes	40	19	46	(98)
Net income	$ 153	$ 64	$ 267	$ 158
Net income per share:
Earnings Per Share, Basic	$ 0.81	$ 0.34	$ 1.42	$ 0.84
Earnings Per Share, Diluted	$ 0.80	$ 0.34	$ 1.40	$ 0.83
Assets:
Accounts receivable, net	$ 660		$ 660		$ 631	$ 624
Inventory	660		660			619
Other current assets	227		227		250	222
Long-term deferred tax assets	727		727		735	750
Other assets	317		317		282	279
Liabilities:
Deferred revenue	333		333		281	334
Income and other taxes payable	61		61		43	42
Other accrued liabilities	74		74		76	69
Long-term deferred revenue	150		150		116	127
Other long-term liabilities	251		251		290	287
Stockholders' equity:
Retained earnings	1,555		1,555		1,288	1,212
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Net revenue:
Revenues	1,087		2,079
Costs and Expenses [Abstract]
Cost of Goods and Services Sold	442		869
Research and development	171		344
Selling, general and administrative	298		585
Other operating expense (income), net	(8)		(12)
Total costs and expenses	903		1,786
Income from operations	184		293
Interest income	6		10
Interest expense	(20)		(40)
Other income (expense), net	22		37
Income before taxes	192		300
Provision for income taxes	40		44
Net income	$ 152		$ 256
Net income per share:
Earnings Per Share, Basic	$ 0.81		$ 1.36
Earnings Per Share, Diluted	$ 0.79		$ 1.34
Assets:
Accounts receivable, net	$ 652		$ 652			624
Inventory	661		661
Other current assets	202		202			222
Long-term deferred tax assets	744		744			750
Other assets	314		314			279
Liabilities:
Deferred revenue	397		397			334
Income and other taxes payable	60		60			42
Other accrued liabilities	67		67			69
Long-term deferred revenue	166		166			127
Other long-term liabilities	248		248			287
Stockholders' equity:
Retained earnings	1,468		1,468			$ 1,212
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Net revenue:
Revenues	3		17
Costs and Expenses [Abstract]
Cost of Goods and Services Sold	0		1
Research and development	0		0
Selling, general and administrative	2		3
Other operating expense (income), net	0		0
Total costs and expenses	2		4
Income from operations	1		13
Interest income	0		0
Interest expense	0		0
Other income (expense), net	0		0
Income before taxes	1		13
Provision for income taxes	0		2
Net income	$ 1		$ 11
Net income per share:
Earnings Per Share, Basic	$ 0		$ 0.06
Earnings Per Share, Diluted	$ 0.01		$ 0.06
Assets:
Accounts receivable, net	$ 8		$ 8		7
Inventory	(1)		(1)
Other current assets	25		25		28
Long-term deferred tax assets	(17)		(17)		(15)
Other assets	3		3		3
Liabilities:
Deferred revenue	(64)		(64)		(53)
Income and other taxes payable	1		1		1
Other accrued liabilities	7		7		7
Long-term deferred revenue	(16)		(16)		(11)
Other long-term liabilities	3		3		3
Stockholders' equity:
Retained earnings	87		87		$ 76
Products
Net revenue:
Revenues	911	$ 830	1,748	$ 1,514
Costs and Expenses [Abstract]
Cost of Goods and Services Sold	360	370	707	709
Products | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Net revenue:
Revenues	903		1,725
Costs and Expenses [Abstract]
Cost of Goods and Services Sold	360		706
Products | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Net revenue:
Revenues	8		23
Costs and Expenses [Abstract]
Cost of Goods and Services Sold	0		1
Services and other
Net revenue:
Revenues	179	160	348	313
Costs and Expenses [Abstract]
Cost of Goods and Services Sold	82	$ 81	163	$ 154
Services and other | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Net revenue:
Revenues	184		354
Costs and Expenses [Abstract]
Cost of Goods and Services Sold	82		163
Services and other | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Net revenue:
Revenues	(5)		(6)
Costs and Expenses [Abstract]
Cost of Goods and Services Sold	$ 0		$ 0

NEW ACCOUNTING PRONOUNCEMENTS C

NEW ACCOUNTING PRONOUNCEMENTS Cumulative effect adjustment from adoption of Topic 606 (Details) - USD ($) $ in Millions	Apr. 30, 2019	Nov. 01, 2018	Oct. 31, 2018
Assets:
Accounts receivable, net	$ 660	$ 631	$ 624
Other current assets	227	250	222
Long-term deferred tax assets	727	735	750
Other assets	317	282	279
Liabilities:
Deferred revenue	333	281	334
Income and other taxes payable	61	43	42
Other accrued liabilities	74	76	69
Long-term deferred revenue	150	116	127
Other long-term liabilities	251	290	287
Stockholders' equity:
Retained earnings	1,555	1,288	1,212
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Assets:
Accounts receivable, net	652		624
Other current assets	202		222
Long-term deferred tax assets	744		750
Other assets	314		279
Liabilities:
Deferred revenue	397		334
Income and other taxes payable	60		42
Other accrued liabilities	67		69
Long-term deferred revenue	166		127
Other long-term liabilities	248		287
Stockholders' equity:
Retained earnings	1,468		$ 1,212
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Assets:
Accounts receivable, net	8	7
Other current assets	25	28
Long-term deferred tax assets	(17)	(15)
Other assets	3	3
Liabilities:
Deferred revenue	(64)	(53)
Income and other taxes payable	1	1
Other accrued liabilities	7	7
Long-term deferred revenue	(16)	(11)
Other long-term liabilities	3	3
Stockholders' equity:
Retained earnings	$ 87	$ 76

NEW ACCOUNTING PRONOUNCEMENTS_5

NEW ACCOUNTING PRONOUNCEMENTS Effect of ASU 2017-07 adoption - Adjustments in Income statement (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold	$ 442	$ 451	$ 870	$ 863
Research and development	171	160	344	310
Selling, general and administrative	300	305	588	600
Other income (expense), net	22	16	37	29
Change
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Research and development		4		8
Selling, general and administrative		6		12
Other income (expense), net		14		26
As originally reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Research and development		156		302
Selling, general and administrative		299		588
Other income (expense), net		2		3
Products
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold	360	370	707	709
Products | Change
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold		3		5
Products | As originally reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold		367		704
Services and other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold	$ 82	81	$ 163	154
Services and other | Change
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold		1		1
Services and other | As originally reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold		$ 80		$ 153

REVENUE (Details)

REVENUE (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 1,090	$ 990	$ 2,096	$ 1,827
Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	676		1,299
Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	299		556
Ixia Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	115	$ 82	241	$ 190
Americas
Disaggregation of Revenue [Line Items]
Revenues	425		828
Americas | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	294		566
Americas | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	66		123
Americas | Ixia Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	65		139
Europe
Disaggregation of Revenue [Line Items]
Revenues	179		358
Europe | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	90		186
Europe | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	71		134
Europe | Ixia Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	18		38
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues	486		910
Asia Pacific | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	292		547
Asia Pacific | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	162		299
Asia Pacific | Ixia Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	32		64
Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Revenues	961		1,848
Transferred at Point in Time | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	619		1,189
Transferred at Point in Time | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	274		509
Transferred at Point in Time | Ixia Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	68		150
Transferred over Time
Disaggregation of Revenue [Line Items]
Revenues	129		248
Transferred over Time | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	57		110
Transferred over Time | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	25		47
Transferred over Time | Ixia Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	47		91
Aerospace, defense and government
Disaggregation of Revenue [Line Items]
Revenues	245		468
Aerospace, defense and government | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	245		468
Aerospace, defense and government | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0		0
Aerospace, defense and government | Ixia Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0		0
Commercial Communications
Disaggregation of Revenue [Line Items]
Revenues	431		831
Commercial Communications | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	431		831
Commercial Communications | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0		0
Commercial Communications | Ixia Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0		0
Electronic Industrial
Disaggregation of Revenue [Line Items]
Revenues	299		556
Electronic Industrial | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0		0
Electronic Industrial | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	299		556
Electronic Industrial | Ixia Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0		0
Ixia Solutions
Disaggregation of Revenue [Line Items]
Revenues	115		241
Ixia Solutions | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0		0
Ixia Solutions | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0		0
Ixia Solutions | Ixia Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	$ 115		$ 241

REVENUE Capitalized Contractu_2

REVENUE Capitalized Contractual Cost (Details) - USD ($)	6 Months Ended
	Apr. 30, 2019	Nov. 01, 2018
Capitalized Contract Cost [Line Items]
Capitalized Contract Cost, Judgment	Capitalized incremental costs are allocated to the individual performance obligations in proportion to the transaction price allocated to each performance obligation and amortized based on the pattern of performance for the underlying performance obligation. Contract costs related to initial contracts and renewals are amortized over the same period because the commissions paid on both the initial contract and renewals are commensurate with one another.
Balance at October 31, 2018	$ 0
Cost capitalized on day1 due to ASC 606 adoption		$ 29
Costs capitalized during the period	33
Costs amortized during the period	(36)
Balance at April 30, 2019	$ 26

REVENUE CONTRACT LIABILITIES RO

REVENUE CONTRACT LIABILITIES ROLL FORWARD (Details) - USD ($)	Oct. 31, 2018	Apr. 30, 2019	Nov. 01, 2018
Contract with Customer, Liability [Abstract]
Balance at October 31, 2018		$ 461
Impact of adopting new revenue standard	$ (64)
Balance at November 1, 2018	461	461	$ 397
Deferral of revenue billed in current period, net of recognition		276
Revenue recognized that was deferred as of the beginning of the period		(191)
Foreign currency translation impact		1
Balance at April 30, 2019	$ 461	$ 483

REVENUE Remaining performance o

REVENUE Remaining performance obligations (Details) $ in Millions	6 Months Ended
	Apr. 30, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 280
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Document Period End Date	Apr. 30, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-05-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Percentage	26.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Percentage	37.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Percentage	37.00%

SHARE-BASED COMPENSATION Alloca

SHARE-BASED COMPENSATION Allocated Share-based compensation expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 23	$ 15	$ 50	$ 34
Share-based Compensation Capitalized within inventory			0	0
MTM adjustment for financial metrics based performance awards			4
Cost of products and services
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	5	4	9	7
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	3	2	9	6
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 15	$ 9	$ 32	$ 21

SHARE-BASED COMPENSATION Fair V

SHARE-BASED COMPENSATION Fair Value Assumptions (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
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]
Volatility of Keysight shares (in hundredths)	26.00%	25.00%	25.00%	25.00%
Volatility of selected index	13.00%	14.00%	12.00%	14.00%
Price-wise correlation with selected peers (in hundredths)	57.00%	57.00%	57.00%	57.00%

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Income Tax Examination [Line Items]
Effective Income Tax Rate, Percent	20.80%	22.50%	14.80%	(162.80%)
Provision for income taxes	$ 40	$ 19	$ 46	$ (98)
Net Discrete Expense (Benefit)	$ (5)	$ 11	$ (29)	(104)
Majority of company's entities [Member]
Income Tax Examination [Line Items]
Open tax year, from date			Aug. 1, 2014
Certain foreign entities [Member]
Income Tax Examination [Line Items]
Open Tax Year			2008
U.S. Tax Cuts and Jobs Act, 2017 [Member]
Income Tax Examination [Line Items]
Net Discrete Expense (Benefit)				$ (103)
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 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]
Open tax year, from date			Nov. 1, 2014

INCOME TAXES INCOME TAXES (Tax

INCOME TAXES INCOME TAXES (Tax incentives) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
	Apr. 30, 2019	Apr. 30, 2019
Income Tax Disclosure [Abstract]
Income Tax Holiday, Aggregate Dollar Amount	$ 11	$ 19
Income Tax Holiday, Income Tax Benefits Per Share	$ 0.06	$ 0.10
Income Tax Holiday, Termination Date		The Singapore tax incentive is due for renewal in fiscal 2024.
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.

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		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Numerator:
Net income	$ 153	$ 64	$ 267	$ 158
Denominator:
Basic weighted-average shares	188	188	188	187
Potential common shares— stock options and other employee stock plans	3	2	3	3
Diluted weighted-average shares	191	190	191	190

NET INCOME PER SHARE (Details)

NET INCOME PER SHARE (Details) - shares	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
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	0	15,000	1,000	6,000

SUPPLEMENT CASH FLOW INFORMAT_3

SUPPLEMENT CASH FLOW INFORMATION Income Taxes (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Income Taxes Paid, Net [Abstract]
Income Taxes Paid, Net	$ 48	$ 11

SUPPLEMENT CASH FLOW INFORMAT_4

SUPPLEMENT CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Other Significant Noncash Transactions [Line Items]
Increase (decrease) in capital expenditure incurred but not yet paid	$ 7	$ (9)
Unsettled treasury repurchase trade	(1)	(12)
Accounts Payable [Member]
Other Significant Noncash Transactions [Line Items]
Increase (decrease) in capital expenditure incurred but not yet paid	7	(9)
Other Accrued Liabilities [Member]
Other Significant Noncash Transactions [Line Items]
Unsettled treasury repurchase trade	$ (1)	$ (12)

SUPPLEMENT CASH FLOW INFORMAT_5

SUPPLEMENT CASH FLOW INFORMATION Interest paid (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest	$ 38	$ 41

SUPPLEMENT CASH FLOW INFORMAT_6

SUPPLEMENT CASH FLOW INFORMATION SUPPLEMENTAL CASH FLOW (Cash, cash equivalents an restricted cash reconciliation) (Details) - USD ($) $ in Millions	Apr. 30, 2019	Oct. 31, 2018	Apr. 30, 2018	Oct. 31, 2017
Cash and cash equivalents	$ 1,277	$ 913	$ 784
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	1,280	$ 917	786	$ 820
Other Current Assets [Member]
Restricted cash included in other current assets	2		0
Other Assets [Member]
Restricted cash included in other assets	$ 1		$ 2

INVENTORY (Details)

INVENTORY (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Oct. 31, 2018
Inventory, Net [Abstract]
Finished goods	$ 290		$ 283
Purchased parts and fabricated assemblies	370		336
Total inventory	660		$ 619
Excess and obsolete inventory-related charges	$ 13	$ 11

GOODWILL AND OTHER INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill Roll forward (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2019	Oct. 31, 2018
Goodwill [Roll Forward]
Goodwill, Gross	$ 1,883	$ 1,880
Goodwill, Impaired, Accumulated Impairment Loss	(709)	(709)
Goodwill, Beginning balance	1,171
Foreign currency translation impact	3
Balance as of April 30, 2019	1,174
Communications Solutions Group
Goodwill [Roll Forward]
Goodwill, Gross	500	497
Goodwill, Impaired, Accumulated Impairment Loss	0	0
Goodwill, Beginning balance	497
Foreign currency translation impact	3
Balance as of April 30, 2019	500
Electronic Industrial Solutions Group
Goodwill [Roll Forward]
Goodwill, Gross	267	267
Goodwill, Impaired, Accumulated Impairment Loss	0	0
Goodwill, Beginning balance	267
Foreign currency translation impact	0
Balance as of April 30, 2019	267
Ixia Solutions Group
Goodwill [Roll Forward]
Goodwill, Gross	1,116	1,116
Goodwill, Impaired, Accumulated Impairment Loss	(709)	$ (709)
Goodwill, Beginning balance	407
Foreign currency translation impact	0
Balance as of April 30, 2019	$ 407

GOODWILL AND OTHER INTANGIBLE_4

GOODWILL AND OTHER INTANGIBLE ASSETS Disclosures and Components of Purchased Other Intangibles (Details) - USD ($) $ in Millions	Apr. 30, 2019	Oct. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	$ 1,186	$ 1,186
Accumulated Amortization and impairments	644	542
Amortizable intangible assets, Net book value	542	644
In-Process R&D	1	1
Intangible Assets, Gross (Excluding Goodwill)	1,187	1,187
Intangible Assets, Net (Excluding Goodwill)	543	645
Developed technology
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	835	835
Accumulated Amortization and impairments	494	415
Intangible Assets, Net (Excluding Goodwill)	341	420
Backlog
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	13	13
Accumulated Amortization and impairments	13	13
Intangible Assets, Net (Excluding Goodwill)	0	0
Trademark/Tradename
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	33	33
Accumulated Amortization and impairments	17	14
Intangible Assets, Net (Excluding Goodwill)	16	19
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Amortizable intangible assets, Gross carrying amount	304	304
Accumulated Amortization and impairments	120	100
Intangible Assets, Net (Excluding Goodwill)	184	204
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 INTANGIBLE_5

GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS Textuals (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Goodwill [Line Items]
Document Period End Date			Apr. 30, 2019
Additions to other intangible assets			$ 0
Amortization of intangible assets	$ 51	$ 51	$ 102	$ 102

GOODWILL AND OTHER INTANGIBLE_6

GOODWILL AND OTHER INTANGIBLE ASSETS Finite-Lived Assets Future Amortization Expense (Details)	Apr. 30, 2019USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Remainder of 2019	$ 101
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	44
Finite-Lived Intangible Assets, Amortization Expense, thereafter	$ 21

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	Apr. 30, 2019	Oct. 31, 2018
Assets Short - term [Abstract]
Money market funds	$ 754	$ 484
Derivative instruments (foreign exchange contracts)	2	6
Assets, Long-term [Abstract]
Equity investments	33	30
Equity investments - other	9	16
Total assets measured at fair value	798	536
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	4	6
Liabilities Long-term [Abstract]
Deferred compensation liability	13	13
Total liabilities measured at fair value	17	19
Level 1
Assets Short - term [Abstract]
Money market funds	754	484
Derivative instruments (foreign exchange contracts)	0	0
Assets, Long-term [Abstract]
Equity investments	33	30
Equity investments - other	0	0
Total assets measured at fair value	787	514
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]
Money market funds	0	0
Derivative instruments (foreign exchange contracts)	2	6
Assets, Long-term [Abstract]
Equity investments	0	0
Equity investments - other	0	0
Total assets measured at fair value	2	6
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	4	6
Liabilities Long-term [Abstract]
Deferred compensation liability	13	13
Total liabilities measured at fair value	17	19
Level 3
Assets Short - term [Abstract]
Money market funds	0	0
Derivative instruments (foreign exchange contracts)	0	0
Assets, Long-term [Abstract]
Equity investments	0	0
Equity investments - other	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

FAIR VALUE MEASUREMENTS FAIR _2

FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Net recognized gains losses on equity securities) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Apr. 30, 2019	Apr. 30, 2019
Debt and Equity Securities, Gain (Loss) [Abstract]
Net realized gains on investments sold	$ 1	$ 1
Net unrealized gains (losses) on investments still held	(2)	3
Other-than-temporary impairments of investments	0	0
Total	$ (1)	$ 4

DERIVATIVES, Disclosures and de

DERIVATIVES, Disclosures and derivative instrument aggregated notional amounts by currency and designations (Details) $ in Millions	Apr. 30, 2019USD ($)contracts
Derivative [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	$ 3
Foreign Exchange Forward [Member] | Cash Flow Hedging
Derivative [Line Items]
Number of Foreign Currency Derivatives Held | contracts	198
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Number of Foreign Currency Derivatives Held | contracts	63
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Sell | British Pound
Derivative [Line Items]
Total notional amount	$ 55
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Sell | Japanese Yen
Derivative [Line Items]
Total notional amount	38
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Buy
Derivative [Line Items]
Total notional amount	62
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Buy | Euro
Derivative [Line Items]
Total notional amount	153
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Buy | Singapore Dollar
Derivative [Line Items]
Total notional amount	0
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Buy | Malaysian Ringgit
Derivative [Line Items]
Total notional amount	1
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Buy | Other Currency [Member]
Derivative [Line Items]
Total notional amount	1
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Sell | Japanese Yen | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	74
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Sell | Other Currency [Member] | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	18
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Buy | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	21
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Buy | Euro | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	14
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	15
Foreign Exchange Forward [Member] | Designated as Hedging Instruments | Buy | Malaysian Ringgit | Cash Flow Hedging
Derivative [Line Items]
Total notional amount	$ 84

DERIVATIVES, Fair value of deri

DERIVATIVES, Fair value of derivative instruments and Consolidated Balance Sheet location (Details) - USD ($) $ in Millions	Apr. 30, 2019	Oct. 31, 2018
Derivative Fair Value by Balance Sheet Location [Abstract]
Total derivatives Asset	$ 2	$ 6
Total derivatives Liabilities	4	6
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	2	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	2	4
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts | Other Current Assets [Member]
Derivative Fair Value by Balance Sheet Location [Abstract]
Total derivatives Asset	0	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	$ 2	$ 2

DERIVATIVES, Effect of derivati

DERIVATIVES, Effect of derivative instruments on Consolidated Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within next Twelve Months			$ (1)
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	$ 0	$ 0	(2)	$ 2
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	0	1	0	3
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	0	0	1	0
Designated as Hedging Instruments | Cash Flow Hedging | Foreign Exchange Contracts | Selling, general and administrative
Derivative [Line Items]
Gain (loss) reclassified from accumulated other comprehensive income into cost of sales	0	0	(1)	0
Not Designated as Hedging Instrument [Member] | Other (income) expense, net
Derivative [Line Items]
Gain (loss) recognized in other income (expense),net	$ (2)	$ 0	$ (5)	$ 1

RETIREMENT PLANS AND POST RET_3

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS RETIREMENT AND POST RETIREMENT PENSION PLANS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Defined benefit plan | US
Defined Benefit Plan Disclosure [Line Items]
Service cost—benefits earned during the period	$ 5	$ 6	$ 10	$ 12
Interest cost on benefit obligation	7	6	14	12
Expected return on plan assets	(10)	(9)	(21)	(18)
Net actuarial loss	2	3	5	6
Prior service credit	(1)	(2)	(2)	(4)
Settlement loss	0	0	0	0
Net periodic benefit cost (benefit)	3	4	6	8
Defined benefit plan | Non-US
Defined Benefit Plan Disclosure [Line Items]
Service cost—benefits earned during the period	4	4	7	7
Interest cost on benefit obligation	5	6	11	12
Expected return on plan assets	(20)	(23)	(39)	(44)
Net actuarial loss	7	7	14	13
Prior service credit	0	0	0	0
Settlement loss	0	0	2	0
Net periodic benefit cost (benefit)	(4)	(6)	(5)	(12)
Post-retirement Benefits Plan | US
Defined Benefit Plan Disclosure [Line Items]
Service cost—benefits earned during the period	0	1	0	1
Interest cost on benefit obligation	2	1	4	3
Expected return on plan assets	(3)	(3)	(6)	(7)
Net actuarial loss	2	4	4	8
Prior service credit	(4)	(4)	(7)	(7)
Settlement loss	0	0	0	0
Net periodic benefit cost (benefit)	$ (3)	$ (1)	$ (5)	$ (2)

RETIREMENT PLANS AND POST RET_4

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Details) (Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
US | Defined benefit plan
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	$ 0	$ 0	$ 0	$ 0
Estimated future employer contributions in remainder of current fiscal year	0		0
US | Post-retirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	0	0	0	0
Non-US | Defined benefit plan
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	7	$ 7	15	$ 16
Estimated future employer contributions in remainder of current fiscal year	$ 15		$ 15

RETIREMENT PLANS AND POST RET_5

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS RETIREMENT AND POST RETIREMENT PENSION PLANS (Details) (Switzerland defined benefit plan settlement) - Defined benefit plan - Non-US - USD ($) $ in Millions	Jan. 01, 2019	Apr. 30, 2019	Jan. 31, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Settlement loss		$ 0		$ 0	$ 2	$ 0
Switzerland Defined Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Date of transfer of defined benefit plan assets	Jan. 1, 2019
Settlement loss			$ 2

WARRANTIES AND CONTINGENCIES (D

WARRANTIES AND CONTINGENCIES (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Guarantees [Abstract]
Standard Product Warranty Description	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	$ 45
Accruals for warranties including change in estimate	15	18
Settlements made during the period	(18)	(17)
Ending balance at end of period	42	46
Standard Product Warranty Disclosure [Abstract]
Accruals for warranties due within one year	24	26
Accruals for warranties due after one year	18	20
Ending balance at end of period	$ 42	$ 46

DEBT Facility (Details)

DEBT Facility (Details) $ in Millions	3 Months Ended	6 Months Ended
	Apr. 30, 2019USD ($)	Apr. 30, 2019USD ($)
Line of Credit Facility [Line Items]
Document Period End Date		Apr. 30, 2019
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
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. As of April 30, 2019, we had no borrowings outstanding under the Revolving Credit Facility. We were in compliance with the covenants of the Revolving Credit Facility during the six months ended April 30, 2019.
Debt Instrument, Term		5 years
Facility, Initiation Date	Feb. 15, 2017
Facility, Maximum Borrowing Capacity	$ 450	$ 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	$ 0
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%

DEBT Long Term Debt (Details)

DEBT Long Term Debt (Details) - USD ($) $ in Millions	Apr. 30, 2019	Oct. 31, 2018
Debt Instrument [Line Items]
Total debt	$ 1,792	$ 1,790
Short-term debt	500	499
Long-term debt	1,292	1,291
Senior Notes 2019
Debt Instrument [Line Items]
Total debt	500	499
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	0	1
Senior Notes 2024
Debt Instrument [Line Items]
Total debt	597	597
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	3	3
Senior Notes 2027
Debt Instrument [Line Items]
Total debt	695	694
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	$ 5	$ 6

DEBT Debt (Textuals) (Details)

DEBT Debt (Textuals) (Details) - USD ($) $ in Millions	Apr. 30, 2019	Oct. 31, 2018
Debt Disclosure [Abstract]
Letters of Credit Outstanding, Amount	$ 28	$ 26
Long Term Debt Fair Value Over Carrying Value	$ 57	$ 3

STOCKHOLDERS' EQUITY STOCKHOLDE

STOCKHOLDERS' EQUITY STOCKHOLDES' EQUITY - Stock Repurchase (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 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			1,030,120	773,352
Treasury Stock, Value, Acquired, Cost Method	$ 30	$ 40	$ 70	$ 40
Unsettled treasury repurchase trade	$ 1	$ 12	$ 1	$ 12

STOCKHOLDER'S EQUITY - Accumula

STOCKHOLDER'S EQUITY - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (449)	$ (412)	$ (488)	$ (457)
Other comprehensive income (loss) before reclassifications	(16)	(13)	14	28
Amounts reclassified out of accumulated other comprehensive loss	7	7	18	13
Tax (expense) benefit	(3)	(1)	(5)	(3)
Other comprehensive income (loss)	(12)	(7)	27	38
Ending balance	(461)	(419)	(461)	(419)
Unrealized gain on equity securities [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0	12	0	14
Other comprehensive income (loss) before reclassifications	0	(1)	0	(3)
Amounts reclassified out of accumulated other comprehensive loss	0	0	0	0
Tax (expense) benefit	0	1	0	1
Other comprehensive income (loss)	0	0	0	(2)
Ending balance	0	12	0	12
Foreign currency translation [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(30)	2	(60)	(39)
Other comprehensive income (loss) before reclassifications	(16)	(13)	14	28
Amounts reclassified out of accumulated other comprehensive loss	0	0	0	0
Tax (expense) benefit	0	0	0	0
Other comprehensive income (loss)	(16)	(13)	14	28
Ending balance	(46)	(11)	(46)	(11)
Net defined benefit pension cost and post retirement plan costs, actuarial losses [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(432)	(458)	(445)	(468)
Other comprehensive income (loss) before reclassifications	0	1	2	1
Amounts reclassified out of accumulated other comprehensive loss	12	14	26	27
Tax (expense) benefit	(4)	(4)	(7)	(7)
Other comprehensive income (loss)	8	11	21	21
Ending balance	(424)	(447)	(424)	(447)
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	16	31	19	35
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified out of accumulated other comprehensive loss	(5)	(6)	(9)	(11)
Tax (expense) benefit	1	2	2	3
Other comprehensive income (loss)	(4)	(4)	(7)	(8)
Ending balance	12	27	12	27
Unrealized gain (losses) on derivatives [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3)	1	(2)	1
Other comprehensive income (loss) before reclassifications	0	0	(2)	2
Amounts reclassified out of accumulated other comprehensive loss	0	(1)	1	(3)
Tax (expense) benefit	0	0	0	0
Other comprehensive income (loss)	0	(1)	(1)	(1)
Ending balance	$ (3)	$ 0	$ (3)	$ 0

STOCKHOLDERS' EQUITY - Reclassi

STOCKHOLDERS' EQUITY - Reclassifications out of accumulated comprehensive income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of Goods and Services Sold	$ (442)	$ (451)	$ (870)	$ (863)
Selling, general and administrative	(300)	(305)	(588)	(600)
Income Tax Expense (Benefit)	(40)	(19)	(46)	98
Net income	153	64	267	158
Income before taxes	193	83	313	60
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net income	(4)	(5)	(14)	(9)
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 Goods and Services Sold	0	1	0	3
Selling, general and administrative	0	0	(1)	0
Income Tax Expense (Benefit)	0	0	0	0
Net income	0	1	(1)	3
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 before taxes	(12)	(14)	(26)	(27)
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 before taxes	5	6	9	11
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)	3	2	4	4
Net income	(4)	(6)	(13)	(12)
Income before taxes	$ (7)	$ (8)	$ (17)	$ (16)

SEGMENT INFORMATION Profitabili

SEGMENT INFORMATION Profitability (Details) $ in Millions	3 Months Ended			6 Months Ended
	Apr. 30, 2019USD ($)	Jan. 31, 2019	Apr. 30, 2018USD ($)	Apr. 30, 2019USD ($)	Apr. 30, 2018USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments				3
Number of Operating Segments				3
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, systems and related services 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-growth applications in the automotive and energy industry and measurement solutions for semiconductor design and manufacturing, consumer electronics, education and general electronics manufacturing. The group provides electronic design and test software, instruments, systems and related services 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 products 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 product solutions consist of high-performance hardware platforms, software applications and services, including warranty and maintenance offerings.
Amortization of acquisition-related balances	$ 3		$ 9	$ 6	$ 28
Total segment revenue	1,090		990	2,096	1,827
Income from operations	185		86	306	69
Communications Solutions Group
Segment Reporting Information [Line Items]
Amortization of acquisition-related balances	0		1	0	1
Total segment revenue	676		626	1,299	1,126
Electronic Industrial Solutions Group
Segment Reporting Information [Line Items]
Amortization of acquisition-related balances	0		0	0	0
Total segment revenue	299		282	556	511
Ixia Solutions Group
Segment Reporting Information [Line Items]
Amortization of acquisition-related balances	3		8	6	27
Total segment revenue	115		82	241	190
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total segment revenue	1,093		999	2,102	1,855
Income from operations	268		190	472	309
Operating Segments [Member] | Communications Solutions Group
Segment Reporting Information [Line Items]
Total segment revenue	676		627	1,299	1,127
Income from operations	187		132	325	195
Operating Segments [Member] | Electronic Industrial Solutions Group
Segment Reporting Information [Line Items]
Total segment revenue	299		282	556	511
Income from operations	78		68	132	106
Operating Segments [Member] | Ixia Solutions Group
Segment Reporting Information [Line Items]
Total segment revenue	118		90	247	217
Income from operations	$ 3		$ (10)	$ 15	$ 8

SEGMENT INFORMATION Reconciliat

SEGMENT INFORMATION Reconciliation of Reportable Results (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Total reportable operating segments' income from operations	$ 185	$ 86	$ 306	$ 69
Share-based compensation expense	(23)	(15)	(50)	(34)
Restructuring Charges	(6)	(11)	(6)	(13)
Amortization of acquisition-related balances	(54)	(65)	(108)	(154)
Acquisition and integration costs	0	(17)	(2)	(36)
Northern California wildfire-related costs	0	0	0	(7)
Other	0	4	0	4
Income from operations	185	86	306	69
Interest income	6	2	10	5
Interest expense	(20)	(21)	(40)	(43)
Other income (expense), net	22	16	37	29
Income before taxes	193	83	313	60
Operating Segments [Member]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Total reportable operating segments' income from operations	268	190	472	309
Income from operations	$ 268	$ 190	$ 472	$ 309

SEGMENT INFORMATION Segment Ass

SEGMENT INFORMATION Segment Assets (Details) - USD ($) $ in Millions	Apr. 30, 2019	Oct. 31, 2018
Segment Reporting Information [Line Items]
Assets	$ 6,190	$ 5,824
Communications Solutions Group
Segment Reporting Information [Line Items]
Assets	2,126	2,115
Electronic Industrial Solutions Group
Segment Reporting Information [Line Items]
Assets	912	888
Ixia Solutions Group
Segment Reporting Information [Line Items]
Assets	1,403	1,327
Operating Segments [Member]
Segment Reporting Information [Line Items]
Assets	$ 4,441	$ 4,330

NORTHERN CALIFORNIA WILDFIRES_3

NORTHERN CALIFORNIA WILDFIRES IMPACT (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended	18 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018	Oct. 31, 2018	Apr. 30, 2019
Unusual or Infrequent Item, or Both [Line Items]
Loss from Catastrophes	$ 0	$ 0	$ 0	$ 7
Insurance Recoveries		$ 32		63
Northern California Wildfires [Member]
Unusual or Infrequent Item, or Both [Line Items]
Insurance Recoveries			22	40	$ 68	$ 90
Property, Plant and Equipment [Member] | Northern California Wildfires [Member]
Unusual or Infrequent Item, or Both [Line Items]
Property, Plant and Equipment purchases			7	$ 9	$ 27	34
Uninsured Risk [Member]
Unusual or Infrequent Item, or Both [Line Items]
Loss from Catastrophes			10
Minimum | Northern California Wildfires [Member]
Unusual or Infrequent Item, or Both [Line Items]
Insurance Settlements Receivable, Current	30		30			30
Maximum | Northern California Wildfires [Member]
Unusual or Infrequent Item, or Both [Line Items]
Insurance Settlements Receivable, Current	$ 40		$ 40			$ 40

NORTHERN CALIFORNIA WILDFIRES_4

NORTHERN CALIFORNIA WILDFIRES IMPACT Charges in consolidated statement of operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Unusual or Infrequent Item, or Both [Line Items]
Loss from Catastrophes	$ 0	$ 0	$ 0	$ 7