$KLAC
KLA CORP Stock $klac

$klac Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-Q Financial Statement

#000031920120000008 Filed on February 05, 2020

Income Statement

Concept	2019 Q4	2018 Q4
Revenue	$1.509B	$1.120B
YoY Change	34.78%	14.76%
Cost Of Revenue	$633.6M	$408.3M
YoY Change	55.2%	17.65%
Gross Profit	$875.8M	$711.6M
YoY Change	23.07%	13.17%
Gross Profit Margin	58.02%	63.54%
Selling, General & Admin	$192.3M	$112.5M
YoY Change	70.95%	6.84%
% of Gross Profit	21.95%	15.8%
Research & Development	$220.8M	$165.9M
YoY Change	33.06%	5.87%
% of Gross Profit	25.2%	23.31%
Depreciation & Amortization	$88.50M	$15.80M
YoY Change	460.13%	-1.86%
% of Gross Profit	10.1%	2.22%
Operating Expenses	$413.0M	$278.4M
YoY Change	48.37%	6.26%
Operating Profit	$462.8M	$433.3M
YoY Change	6.82%	18.1%
Interest Expense	$40.47M	$26.54M
YoY Change	52.51%	-3.05%
% of Operating Profit	8.74%	6.13%
Other Income/Expense, Net	$2.568M	$9.600M
YoY Change	-73.25%	11.63%
Pretax Income	$424.9M	$416.0M
YoY Change	2.15%	19.77%
Income Tax	$44.62M	$46.86M
% Of Pretax Income	10.5%	11.27%
Net Earnings	$380.6M	$369.1M
YoY Change	3.1%	-374.79%
Net Earnings / Revenue	25.21%	32.96%
Basic Earnings Per Share	$2.42	$2.43
Diluted Earnings Per Share	$2.40	$2.42
COMMON SHARES
Basic Shares Outstanding	157.3M shares	152.1M shares
Diluted Shares Outstanding	158.6M shares	152.6M shares

Balance Sheet

Concept	2019 Q4	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.678B	$2.694B
YoY Change	-37.73%	-2.32%
Cash & Equivalents	$939.9M	$1.794B
Short-Term Investments	$737.7M	$900.1M
Other Short-Term Assets	$257.5M	$127.4M
YoY Change	102.19%	90.28%
Inventory	$1.251B	$1.006B
Prepaid Expenses	$73.32M	$48.41M
Receivables	$1.191B	$658.1M
Other Receivables	$25.10M	$12.20M
Total Short-Term Assets	$4.377B	$4.486B
YoY Change	-2.41%	3.02%
LONG-TERM ASSETS
Property, Plant & Equipment	$490.0M	$306.4M
YoY Change	59.94%	8.78%
Goodwill	$2.300B	$360.5M
YoY Change	537.98%	2.99%
Intangibles	$1.492B	$23.82M
YoY Change	6166.06%	43.8%
Long-Term Investments
YoY Change
Other Assets	$377.8M	$204.0M
YoY Change	85.2%	-3.46%
Total Long-Term Assets	$4.873B	$1.120B
YoY Change	335.2%	6.31%
TOTAL ASSETS
Total Short-Term Assets	$4.377B	$4.486B
Total Long-Term Assets	$4.873B	$1.120B
Total Assets	$9.251B	$5.605B
YoY Change	65.04%	3.66%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$256.6M	$152.5M
YoY Change	68.3%	1.77%
Accrued Expenses	$765.3M	$536.6M
YoY Change	42.62%	3.35%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$250.0M
YoY Change	-100.0%
Total Short-Term Liabilities	$1.718B	$1.483B
YoY Change	15.9%	27.09%
LONG-TERM LIABILITIES
Long-Term Debt	$3.400B	$1.988B
YoY Change	70.99%	-20.03%
Other Long-Term Liabilities	$663.7M	$446.3M
YoY Change	48.73%	-3.14%
Total Long-Term Liabilities	$4.064B	$2.435B
YoY Change	66.91%	-17.39%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.718B	$1.483B
Total Long-Term Liabilities	$4.064B	$2.435B
Total Liabilities	$6.563B	$4.008B
YoY Change	63.75%	-4.16%
SHAREHOLDERS EQUITY
Retained Earnings	$719.0M	$1.049B
YoY Change	-31.45%	43.78%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.670B	$1.598B
YoY Change
Total Liabilities & Shareholders Equity	$9.251B	$5.605B
YoY Change	65.04%	3.66%

Cashflow Statement

Concept	2019 Q4	2018 Q4
OPERATING ACTIVITIES
Net Income	$380.6M	$369.1M
YoY Change	3.1%	-374.79%
Depreciation, Depletion And Amortization	$88.50M	$15.80M
YoY Change	460.13%	-1.86%
Cash From Operating Activities	$387.8M	$282.2M
YoY Change	37.42%	118.08%
INVESTING ACTIVITIES
Capital Expenditures	-$34.80M	-$26.40M
YoY Change	31.82%	98.5%
Acquisitions
YoY Change
Other Investing Activities	$26.70M	$235.0M
YoY Change	-88.64%	497.96%
Cash From Investing Activities	-$8.100M	$208.6M
YoY Change	-103.88%	705.41%
FINANCING ACTIVITIES
Cash Dividend Paid	$134.7M
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-432.0M	-347.4M
YoY Change	24.35%	-14.5%
NET CHANGE
Cash From Operating Activities	387.8M	282.2M
Cash From Investing Activities	-8.100M	208.6M
Cash From Financing Activities	-432.0M	-347.4M
Net Change In Cash	-52.30M	143.4M
YoY Change	-136.47%	-157.13%
FREE CASH FLOW
Cash From Operating Activities	$387.8M	$282.2M
Capital Expenditures	-$34.80M	-$26.40M
Free Cash Flow	$422.6M	$308.6M
YoY Change	36.94%	116.26%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--06-30
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Entity Central Index Key EntityCentralIndexKey	0000319201
CY2019Q2	klac	Number Of Customers With Significant Accounts Receivable Balance NumberOfCustomersWithSignificantAccountsReceivableBalance	1	customer
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.75
CY2018Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.75
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.75
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.85
CY2019	us-gaap	Derivative Remaining Maturity1 DerivativeRemainingMaturity1	P7M
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	000-09992
	dei	Entity Registrant Name EntityRegistrantName	KLA CORPORATION
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	04-2564110
	dei	Entity Address Address Line1 EntityAddressAddressLine1	One Technology Drive,
	dei	Entity Address City Or Town EntityAddressCityOrTown	Milpitas,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	95035
	dei	City Area Code CityAreaCode	408
	dei	Local Phone Number LocalPhoneNumber	875-3000
	dei	Security12b Title Security12bTitle	Common Stock, $0.001 par value per share
	dei	Trading Symbol TradingSymbol	KLAC
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Shell Company EntityShellCompany	false
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
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CY2018Q4	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-4475000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	436000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-1180000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	2003000	USD
CY2018Q4	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-16243000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	2764000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-6781000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	51000	USD
CY2018Q4	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-413000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-678000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-555000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	616000	USD
CY2018Q4	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	2649000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	1799000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	4759000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-82000	USD
CY2018Q4	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-469000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-86000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-950000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	150000	USD
CY2018Q4	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	577000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-392000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	1079000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	548000	USD
CY2018Q4	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	2541000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	2277000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	4630000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5097000	USD
CY2018Q4	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-14280000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6271000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5669000	USD
CY2019Q4	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-250000	USD
CY2018Q4	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-379000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2019Q4	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	385652000	USD
CY2018Q4	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	354820000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	733351000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	759375000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2677693000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	346525000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1174000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-129000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-23423000	USD
CY2019Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	228496000	USD
CY2019Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	120669000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	26944000	USD
CY2019Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2679619000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	380555000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5097000	USD
CY2019Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-250000	USD
CY2019Q4	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	12262000	USD
CY2019Q4	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	280593000	USD
CY2019Q4	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	135509000	USD
CY2019Q4	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	26789000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2687970000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1620511000	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	1599371000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	395944000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8611000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-26961000	USD
CY2018Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	307787000	USD
CY2018Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	117947000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16138000	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1567369000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	369100000	USD
CY2018Q4	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-14280000	USD
CY2018Q4	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	17323000	USD
CY2018Q4	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	242401000	USD
CY2018Q4	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	115184000	USD
CY2018Q4	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	15695000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1597622000	USD
	us-gaap	Profit Loss ProfitLoss	726701000	USD
	us-gaap	Profit Loss ProfitLoss	765044000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	187122000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	31893000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-7344000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-4790000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	53733000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	31833000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	201896000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	19790000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	6568000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	70847000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5372000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-18125000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	54143000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-17205000	USD
	klac	Increase Decrease In Contract With Customer Liability System Revenue IncreaseDecreaseInContractWithCustomerLiabilitySystemRevenue	-35245000	USD
	klac	Increase Decrease In Contract With Customer Liability System Revenue IncreaseDecreaseInContractWithCustomerLiabilitySystemRevenue	-99533000	USD
	klac	Increase Decrease In Contract With Customer Liability Service Revenue IncreaseDecreaseInContractWithCustomerLiabilityServiceRevenue	-3117000	USD
	klac	Increase Decrease In Contract With Customer Liability Service Revenue IncreaseDecreaseInContractWithCustomerLiabilityServiceRevenue	-1114000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	107131000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	20381000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	883976000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	663577000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	78530000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	11787000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	67440000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	48696000	USD
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	1086000	USD
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	0	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	408482000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2686000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	35736000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	198608000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	357450000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	382809000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	21873000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	32100000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	27212000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	37334000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-154841000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	523482000	USD
	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	250000000	USD
	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	275000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	513089000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	550187000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	256332000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	237319000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	24613000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	20556000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	35775000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	30194000	USD
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	60000	USD
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-805643000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-797144000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	378000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-315000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-76130000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	389600000	USD
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1015994000	USD
CY2018Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1404382000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	939864000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1793982000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	70746000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	112816000	USD
	us-gaap	Interest Paid Net InterestPaidNet	79486000	USD
	us-gaap	Interest Paid Net InterestPaidNet	51673000	USD
	klac	Noncash Or Part Noncash Acquisition Holdback Consideration Payable NoncashOrPartNoncashAcquisitionHoldbackConsiderationPayable	0	USD
	klac	Noncash Or Part Noncash Acquisition Holdback Consideration Payable NoncashOrPartNoncashAcquisitionHoldbackConsiderationPayable	440000	USD
	klac	Noncash Or Part Noncash Acquisition Contingent Consideration Payable NoncashOrPartNoncashAcquisitionContingentConsiderationPayable	5825000	USD
	klac	Noncash Or Part Noncash Acquisition Contingent Consideration Payable NoncashOrPartNoncashAcquisitionContingentConsiderationPayable	2529000	USD
	klac	Noncash Transaction Increase Decrease In Dividends Payable NoncashTransactionIncreaseDecreaseInDividendsPayable	3190000	USD
	klac	Noncash Transaction Increase Decrease In Dividends Payable NoncashTransactionIncreaseDecreaseInDividendsPayable	5404000	USD
	klac	Stock Repurchase Program Unsettled Common Stock Repurchase StockRepurchaseProgramUnsettledCommonStockRepurchase	4000000	USD
	klac	Stock Repurchase Program Unsettled Common Stock Repurchase StockRepurchaseProgramUnsettledCommonStockRepurchase	0	USD
	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	13755000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	7705000	USD
	us-gaap	Use Of Estimates UseOfEstimates	The preparation of the Condensed Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions in applying our accounting policies that affect the reported amounts of assets and liabilities (and related disclosure of contingent assets and liabilities) at the date of the Condensed Consolidated Financial Statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1191035000	USD
CY2019Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	990113000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	200922000	USD
	klac	Increase Decrease In Accounts Receivable Percentage IncreaseDecreaseInAccountsReceivablePercentage	0.20
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	85837000	USD
CY2019Q3	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	94015000	USD
	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-8178000	USD
	klac	Increase Decrease In Contract With Customer Asset Percentage IncreaseDecreaseInContractWithCustomerAssetPercentage	-0.09
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	551356000	USD
CY2019Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	587789000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-36433000	USD
	klac	Increase Decrease In Contract With Customer Liability Percentage IncreaseDecreaseInContractWithCustomerLiabilityPercentage	-0.06
	us-gaap	Revenue Performance Obligation Description Of Timing RevenuePerformanceObligationDescriptionOfTiming	Our payment terms and conditions vary by contract type, although terms generally include a requirement of payment of 70% to 90% of total contract consideration within 30 to 60 days of shipment, with the remainder payable within 30 days of acceptance
	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	46900000	USD
	us-gaap	Contract With Customer Asset Cumulative Catch Up Adjustment To Revenue Modification Of Contract ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueModificationOfContract	38700000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	354400000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	2070000000.00	USD
CY2019Q4	us-gaap	Cash Cash	412500000	USD
CY2019Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	85700000	USD
CY2019Q2	us-gaap	Cash Cash	479800000	USD
CY2019Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	99000000.0	USD
CY2019Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	1202925000	USD
CY2019Q2	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	1002114000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	11890000	USD
CY2019Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12001000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1191035000	USD
CY2019Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	990113000	USD
CY2019Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	450956000	USD
CY2019Q2	us-gaap	Inventory Raw Materials InventoryRawMaterials	444627000	USD
CY2019Q4	us-gaap	Other Inventories Spare Parts OtherInventoriesSpareParts	337118000	USD
CY2019Q2	us-gaap	Other Inventories Spare Parts OtherInventoriesSpareParts	328515000	USD
CY2019Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	319590000	USD
CY2019Q2	us-gaap	Inventory Work In Process InventoryWorkInProcess	285191000	USD
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	143736000	USD
CY2019Q2	us-gaap	Inventory Finished Goods InventoryFinishedGoods	204167000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	1251400000	USD
CY2019Q2	us-gaap	Inventory Net InventoryNet	1262500000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	85837000	USD
CY2019Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	94015000	USD
CY2019Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	73322000	USD
CY2019Q2	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	88387000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	55083000	USD
CY2019Q2	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	70721000	USD
CY2019Q4	us-gaap	Prepaid Taxes PrepaidTaxes	25102000	USD
CY2019Q2	us-gaap	Prepaid Taxes PrepaidTaxes	51889000	USD
CY2019Q4	klac	Other Current Assets OtherCurrentAssets	18142000	USD
CY2019Q2	klac	Other Current Assets OtherCurrentAssets	18065000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	257486000	USD
CY2019Q2	us-gaap	Other Assets Current OtherAssetsCurrent	323077000	USD
CY2019Q4	us-gaap	Land Land	67874000	USD
CY2019Q2	us-gaap	Land Land	67883000	USD
CY2019Q4	klac	Buildings And Leasehold Improvements BuildingsAndLeaseholdImprovements	416463000	USD
CY2019Q2	klac	Buildings And Leasehold Improvements BuildingsAndLeaseholdImprovements	402678000	USD
CY2019Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	699175000	USD
CY2019Q2	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	669316000	USD
CY2019Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	34899000	USD
CY2019Q2	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	28282000	USD
CY2019Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	63566000	USD
CY2019Q2	us-gaap	Construction In Progress Gross ConstructionInProgressGross	26029000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1281977000	USD
CY2019Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1194188000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	791997000	USD
CY2019Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	745389000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	489980000	USD
CY2019Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	448799000	USD
CY2019Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	216612000	USD
CY2019Q2	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	207581000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	103666000	USD
CY2019Q4	klac	Other Non Current Assets OtherNonCurrentAssets	57533000	USD
CY2019Q2	klac	Other Non Current Assets OtherNonCurrentAssets	58392000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	377811000	USD
CY2019Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	265973000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	326407000	USD
CY2019Q2	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	226462000	USD
CY2019Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	217387000	USD
CY2019Q2	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	208926000	USD
CY2019Q4	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	164155000	USD
CY2019Q2	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	133677000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	160522000	USD
CY2019Q2	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	202647000	USD
CY2019Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	80776000	USD
CY2019Q2	us-gaap	Taxes Payable Current TaxesPayableCurrent	23350000	USD
CY2019Q4	us-gaap	Interest And Dividends Payable Current InterestAndDividendsPayableCurrent	31026000	USD
CY2019Q2	us-gaap	Interest And Dividends Payable Current InterestAndDividendsPayableCurrent	31992000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	29937000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	1010210000	USD
CY2019Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	827054000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	368751000	USD
CY2019Q2	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	392266000	USD
CY2019Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	79895000	USD
CY2019Q2	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	79622000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	72620000	USD
CY2019Q4	klac	Other Noncurrent Liabilities1 OtherNoncurrentLiabilities1	142466000	USD
CY2019Q2	klac	Other Noncurrent Liabilities1 OtherNoncurrentLiabilities1	116009000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	663732000	USD
CY2019Q2	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	587897000	USD
CY2019Q4	klac	Cash Cash Equivalentsand Availableforsale Debt Securities Excluding Time Deposits Amortized Cost CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost	1178515000	USD
CY2019Q4	klac	Cash Cash Equivalents And Availableforsale Debt Securities Accumulated Gross Unrealized Gain CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain	929000	USD
CY2019Q4	klac	Cash Cash Equivalents And Availableforsale Debt Securities Accumulated Gross Unrealized Losses CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses	85000	USD
CY2019Q4	klac	Cash Cash Equivalentsand Availableforsale Debt Securities Excluding Time Deposits CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits	1179359000	USD
CY2019Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	85667000	USD
CY2019Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	85667000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	736814000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	929000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	85000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	737658000	USD
CY2019Q2	klac	Cash Cash Equivalentsand Availableforsale Debt Securities Excluding Time Deposits Amortized Cost CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost	1161649000	USD
CY2019Q2	klac	Cash Cash Equivalents And Availableforsale Debt Securities Accumulated Gross Unrealized Gain CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain	189000	USD
CY2019Q2	klac	Cash Cash Equivalents And Availableforsale Debt Securities Accumulated Gross Unrealized Losses CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses	1232000	USD
CY2019Q2	klac	Cash Cash Equivalentsand Availableforsale Debt Securities Excluding Time Deposits CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits	1160606000	USD
CY2019Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	99006000	USD
CY2019Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	99006000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	724449000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	172000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1230000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	723391000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	81	investment
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	68300000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	216797000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	85000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	386442000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	386617000	USD
CY2019Q4	klac	Debt Securities Availableforsale Maturity Allocatedand Single Maturity Dateafter One Through Three Years Amortized Cost DebtSecuritiesAvailableforsaleMaturityAllocatedandSingleMaturityDateafterOneThroughThreeYearsAmortizedCost	350372000	USD
CY2019Q4	klac	Debt Securities Availableforsale Maturity Allocatedand Single Maturity Dateafter One Through Three Years Fair Value DebtSecuritiesAvailableforsaleMaturityAllocatedandSingleMaturityDateafterOneThroughThreeYearsFairValue	351041000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	736814000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	737658000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
	us-gaap	Number Of Reporting Units NumberOfReportingUnits	6	reporting_unit
CY2019Q2	us-gaap	Goodwill Goodwill	2211858000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	54001000	USD
	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	33968000	USD
	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-46000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	2299781000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1723837000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	421922000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1301915000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1680421000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	307251000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1373170000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	1914472000	USD
CY2019Q4	klac	Finite Lived Intangible Assets Accumulated Amortization And Other Accumulated Adjustment FiniteLivedIntangibleAssetsAccumulatedAmortizationAndOtherAccumulatedAdjustment	422022000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1492450000	USD
CY2019Q2	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	1867921000	USD
CY2019Q2	klac	Finite Lived Intangible Assets Accumulated Amortization And Other Accumulated Adjustment FiniteLivedIntangibleAssetsAccumulatedAmortizationAndOtherAccumulatedAdjustment	307251000	USD
CY2019Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1560670000	USD
CY2019Q4	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	56752000	USD
CY2018Q4	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1311000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	114660000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2745000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	104770000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	194901000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	192323000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	191232000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	188714000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	429975000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1301915000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3425000000	USD
CY2019Q2	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3450000000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	8319000	USD
CY2019Q2	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	8738000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	16804000	USD
CY2019Q2	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	17880000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	3399877000	USD
CY2019Q2	us-gaap	Long Term Debt LongTermDebt	3423382000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2019Q2	us-gaap	Long Term Debt Current LongTermDebtCurrent	249999000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3399877000	USD
CY2019Q2	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3173383000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	3399877000	USD
CY2019Q2	us-gaap	Long Term Debt LongTermDebt	3423382000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	500000000.0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	225000000.0	USD
CY2019Q4	klac	Long Term Debt Maturities Repayments Of Principal After Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour	2700000000	USD
CY2019Q4	us-gaap	Lease Cost LeaseCost	9100000	USD
	us-gaap	Lease Cost LeaseCost	17600000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0167
	us-gaap	Operating Lease Payments OperatingLeasePayments	17424000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	10278000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	16624000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	27013000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	19925000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	13522000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	9033000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	20748000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	106865000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	4308000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	102557000	USD
CY2019Q2	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	30296000	USD
CY2019Q2	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	22250000	USD
CY2019Q2	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	16217000	USD
CY2019Q2	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	11878000	USD
CY2019Q2	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	7912000	USD
CY2019Q2	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	15018000	USD
CY2019Q2	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	103571000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate	0.15
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	11613000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	10695000	shares
CY2019Q4	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26789000	USD
CY2018Q4	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15695000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	53733000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	31833000	USD
CY2019Q4	klac	Stock Based Compensation Capitalized As Inventory StockBasedCompensationCapitalizedAsInventory	5030000	USD
CY2019Q2	klac	Stock Based Compensation Capitalized As Inventory StockBasedCompensationCapitalizedAsInventory	4819000	USD
	klac	Employee Stock Purchase Plan Offering Period EmployeeStockPurchasePlanOfferingPeriod	P6M
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Offering Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceOfferingDate	0.85
CY2019Q4	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	24492000	USD
CY2018Q4	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	20556000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	24492000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	20556000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	237000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	270000	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	237000	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	270000	shares
CY2019Q4	klac	Tax Benefits From Espp TaxBenefitsFromEspp	119000	USD
CY2018Q4	klac	Tax Benefits From Espp TaxBenefitsFromEspp	92000	USD
	klac	Tax Benefits From Espp TaxBenefitsFromEspp	1853000	USD
	klac	Tax Benefits From Espp TaxBenefitsFromEspp	603000	USD
CY2019Q4	klac	Weighted Average Fair Value Per Share WeightedAverageFairValuePerShare	27.35
CY2018Q4	klac	Weighted Average Fair Value Per Share WeightedAverageFairValuePerShare	22.73
	klac	Weighted Average Fair Value Per Share WeightedAverageFairValuePerShare	27.35
	klac	Weighted Average Fair Value Per Share WeightedAverageFairValuePerShare	22.73
CY2019Q4	klac	Espp Maximum Annual Share Replenishment ESPPMaximumAnnualShareReplenishment	2000000.0	shares
CY2019Q4	klac	Number Of Espp Shares Available For Future Issuance NumberOfEsppSharesAvailableForFutureIssuance	2400000	shares
CY2019Q4	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	280593000	USD
CY2018Q4	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	242401000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	509089000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	550187000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	380555000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	369100000	USD
	us-gaap	Net Income Loss NetIncomeLoss	727080000	USD
	us-gaap	Net Income Loss NetIncomeLoss	765044000	USD
CY2019Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	157290000	shares
CY2018Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	152148000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	157994000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	153684000	shares
CY2019Q4	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1330000	shares
CY2018Q4	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	500000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1320000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	705000	shares
CY2019Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	158620000	shares
CY2018Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	152648000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	159314000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	154389000	shares
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.42
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.43
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.60
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.98
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.40
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.42
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.56
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.96
CY2019Q4	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	43000	shares
CY2018Q4	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	341000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	25000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	280000	shares
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	424927000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	415963000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	796443000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	843531000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	44622000	USD
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	46863000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	69742000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	78487000	USD
CY2019Q4	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.105
CY2018Q4	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.113
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.088
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.093
CY2019Q4	klac	Receivables Sold Under Factoring Agreements ReceivablesSoldUnderFactoringAgreements	116935000	USD
CY2018Q4	klac	Receivables Sold Under Factoring Agreements ReceivablesSoldUnderFactoringAgreements	39814000	USD
	klac	Receivables Sold Under Factoring Agreements ReceivablesSoldUnderFactoringAgreements	173355000	USD
	klac	Receivables Sold Under Factoring Agreements ReceivablesSoldUnderFactoringAgreements	101354000	USD
CY2019Q4	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	10677000	USD
CY2018Q4	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	8339000	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	20606000	USD
CY2019Q4	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	804100000	USD
	klac	Outstanding Inventory Purchase Commitment OutstandingInventoryPurchaseCommitment	P12M
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	19231000	USD
CY2019Q4	klac	Long Term Incentive Plan Committed Amount LongTermIncentivePlanCommittedAmount	156800000	USD
	klac	Guarantee Arrangements To Fund Customs Guarantees For Vat And Lc GuaranteeArrangementsToFundCustomsGuaranteesForVatAndLc	77200000	USD
	klac	Outstanding Guarantee Arrangements To Fund Customs Guarantees For Vat And Lc OutstandingGuaranteeArrangementsToFundCustomsGuaranteesForVatAndLc	68800000	USD
CY2019Q4	us-gaap	Interest Rate Cash Flow Hedge Asset At Fair Value InterestRateCashFlowHedgeAssetAtFairValue	3600000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1509453000	USD
CY2019Q4	klac	Cost Of Revenue And Operating Expense CostOfRevenueAndOperatingExpense	1046622000	USD
CY2019Q4	us-gaap	Interest Expense InterestExpense	40472000	USD
CY2019Q4	us-gaap	Interest And Other Income InterestAndOtherIncome	2568000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1119898000	USD
CY2018Q4	us-gaap	Cost Of Revenue CostOfRevenue	408260000	USD
CY2018Q4	us-gaap	Interest Expense InterestExpense	26538000	USD
CY2018Q4	us-gaap	Interest And Other Income InterestAndOtherIncome	9228000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2922867000	USD
	klac	Cost Of Revenue And Operating Expense CostOfRevenueAndOperatingExpense	2049788000	USD
	us-gaap	Interest Expense InterestExpense	80822000	USD
	us-gaap	Interest And Other Income InterestAndOtherIncome	4186000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2213158000	USD
	us-gaap	Cost Of Revenue CostOfRevenue	789647000	USD
	us-gaap	Interest Expense InterestExpense	52900000	USD
	us-gaap	Interest And Other Income InterestAndOtherIncome	19253000	USD
	us-gaap	Derivative Remaining Maturity1 DerivativeRemainingMaturity1	P7M
CY2019Q3	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	-10006000	USD
CY2018Q3	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	15103000	USD
CY2019Q2	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	-10791000	USD
CY2018Q2	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	2346000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-125000	USD
CY2018Q4	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	1736000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-1652000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	2773000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	2290000	USD
CY2018Q4	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-18982000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	1548000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-5188000	USD
CY2019Q4	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	-7591000	USD
CY2018Q4	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	-5615000	USD
CY2019Q4	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	-7591000	USD
CY2018Q4	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	-5615000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	3173000	USD
CY2019Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	3173000	USD
CY2019Q4	us-gaap	Derivative Asset Not Offset Policy Election Deduction DerivativeAssetNotOffsetPolicyElectionDeduction	966000	USD
CY2019Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2019Q4	us-gaap	Derivative Asset Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	2207000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1759000	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1759000	USD
CY2019Q4	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	966000	USD
CY2019Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	793000	USD
CY2019Q2	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	2557000	USD
CY2019Q2	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2019Q2	us-gaap	Derivative Assets DerivativeAssets	2557000	USD
CY2019Q2	us-gaap	Derivative Asset Not Offset Policy Election Deduction DerivativeAssetNotOffsetPolicyElectionDeduction	1397000	USD
CY2019Q2	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2019Q2	us-gaap	Derivative Asset Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	1160000	USD
CY2019Q2	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	3334000	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2019Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	3334000	USD
CY2019Q2	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	1397000	USD
CY2019Q2	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	1937000	USD
CY2019Q4	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	2794000	USD
CY2018Q4	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	11000	USD
	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	3835000	USD
	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	13000	USD
CY2019Q4	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	249000	USD
CY2018Q4	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	1603000	USD
	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	714000	USD
	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	2206000	USD
CY2019Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	1200000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1509453000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1119898000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2922867000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2213158000	USD
CY2019Q4	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	220751000	USD
CY2018Q4	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	165903000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	431331000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	319433000	USD
CY2019Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	192253000	USD
CY2018Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	112462000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	380598000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	226900000	USD
CY2019Q4	us-gaap	Interest Expense InterestExpense	40472000	USD
CY2018Q4	us-gaap	Interest Expense InterestExpense	26538000	USD
	us-gaap	Interest Expense InterestExpense	80822000	USD
	us-gaap	Interest Expense InterestExpense	52900000	USD
CY2019Q4	us-gaap	Interest And Other Income InterestAndOtherIncome	2568000	USD
CY2018Q4	us-gaap	Interest And Other Income InterestAndOtherIncome	9228000	USD
	us-gaap	Interest And Other Income InterestAndOtherIncome	4186000	USD
	us-gaap	Interest And Other Income InterestAndOtherIncome	19253000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	424927000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	415963000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	796443000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	843531000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1509453000	USD
CY2019Q4	klac	Segment Percent Of Total Revenue SegmentPercentOfTotalRevenue	1
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1119898000	USD
CY2018Q4	klac	Segment Percent Of Total Revenue SegmentPercentOfTotalRevenue	1
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2922867000	USD
	klac	Segment Percent Of Total Revenue SegmentPercentOfTotalRevenue	1
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2213158000	USD
	klac	Segment Percent Of Total Revenue SegmentPercentOfTotalRevenue	1
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1509453000	USD
CY2019Q4	klac	Segment Percent Of Total Revenue SegmentPercentOfTotalRevenue	1
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1119898000	USD
CY2018Q4	klac	Segment Percent Of Total Revenue SegmentPercentOfTotalRevenue	1
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2922867000	USD
	klac	Segment Percent Of Total Revenue SegmentPercentOfTotalRevenue	1
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2213158000	USD
	klac	Segment Percent Of Total Revenue SegmentPercentOfTotalRevenue	1
CY2019Q4	klac	Number Of Customers With Significant Revenue NumberOfCustomersWithSignificantRevenue	2	customer
CY2018Q4	klac	Number Of Customers With Significant Revenue NumberOfCustomersWithSignificantRevenue	2	customer
	klac	Number Of Customers With Significant Revenue NumberOfCustomersWithSignificantRevenue	2	customer
	klac	Number Of Customers With Significant Revenue NumberOfCustomersWithSignificantRevenue	1	customer
CY2019Q4	klac	Number Of Customers With Significant Accounts Receivable Balance NumberOfCustomersWithSignificantAccountsReceivableBalance	1	customer
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	489980000	USD
CY2019Q2	us-gaap	Noncurrent Assets NoncurrentAssets	448799000	USD
CY2019Q4	us-gaap	Restructuring Charges RestructuringCharges	2700000	USD
	us-gaap	Restructuring Charges RestructuringCharges	2800000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	2800000	USD

Files In Submission

Name	View Source	Status
0000319201-20-000008-index-headers.html	Edgar Link	pending
0000319201-20-000008-index.html	Edgar Link	pending
0000319201-20-000008.txt	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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klac-20191231_cal.xml	Edgar Link	unprocessable
klac-20191231_def.xml	Edgar Link	unprocessable
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klac10q123119.htm	Edgar Link	pending
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$KLAC
KLA CORP Stock $klac

2019 Q4 Form 10-Q Financial Statement

#000031920120000008 Filed on February 05, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KLAC KLA CORP Stock $klac

2019 Q4 Form 10-Q Financial Statement

#000031920120000008 Filed on February 05, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KLAC
KLA CORP Stock $klac