$KLAC
KLA CORP Stock $klac

$klac Overview Financials Valuation SEC Filings Company Website

2020 Q2 Form 10-Q Financial Statement

#000031920120000026 Filed on May 06, 2020

Income Statement

Concept	2020 Q2	2020 Q1	2019 Q3
Revenue	$1.460B	$1.424B	$1.413B
YoY Change	15.98%	29.77%	29.28%
Cost Of Revenue	$621.5M	$590.2M	$604.2M
YoY Change	4.66%	21.2%	58.43%
Gross Profit	$838.0M	$833.8M	$809.2M
YoY Change	25.9%	36.61%	13.67%
Gross Profit Margin	57.42%	58.56%	57.25%
Selling, General & Admin	$153.5M	$185.8M	$188.3M
YoY Change	-7.53%	1.96%	64.58%
% of Gross Profit	18.32%	22.28%	23.28%
Research & Development	$217.1M	$215.4M	$210.6M
YoY Change	5.03%	16.52%	37.16%
% of Gross Profit	25.91%	25.84%	26.02%
Depreciation & Amortization	$78.90M	$82.00M	$98.59M
YoY Change	-38.31%	11.72%	512.84%
% of Gross Profit	9.41%	9.83%	12.18%
Operating Expenses	$384.9M	$401.2M	$398.9M
YoY Change	-2.97%	9.3%	48.87%
Operating Profit	$453.1M	$432.6M	$410.2M
YoY Change	68.49%	77.81%	-7.58%
Interest Expense	-$40.20M	$39.23M	$40.35M
YoY Change	1.77%	25.79%	53.06%
% of Operating Profit	-8.87%	9.07%	9.84%
Other Income/Expense, Net	-$7.900M	$1.004M	$1.618M
YoY Change	-372.41%	-89.2%	-84.29%
Pretax Income	$405.1M	$115.2M	$371.5M
YoY Change	75.14%	-47.97%	-13.11%
Income Tax	-$5.200M	$37.19M	$25.12M
% Of Pretax Income	-1.28%	32.28%	6.76%
Net Earnings	$411.3M	$78.45M	$346.5M
YoY Change	88.78%	-59.29%	-12.48%
Net Earnings / Revenue	28.18%	5.51%	24.52%
Basic Earnings Per Share	$2.65	$0.50	$2.18
Diluted Earnings Per Share	$2.63	$0.50	$2.16
COMMON SHARES
Basic Shares Outstanding	155.0M shares	156.1M shares	158.7M shares
Diluted Shares Outstanding		157.2M shares	160.1M shares

Balance Sheet

Concept	2020 Q2	2020 Q1	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.980B	$1.635B	$1.752B
YoY Change	13.86%	-13.85%	-37.0%
Cash & Equivalents	$1.234B	$946.2M	$988.3M
Short-Term Investments	$746.1M	$688.4M	$763.2M
Other Short-Term Assets	$324.7M	$300.5M	$283.8M
YoY Change	0.49%	11.28%	95.72%
Inventory	$1.311B	$1.264B	$1.254B
Prepaid Expenses	$74.96M	$71.98M	$80.69M
Receivables	$1.107B	$1.119B	$990.1M
Other Receivables	$56.80M	$36.90M	$15.80M
Total Short-Term Assets	$4.724B	$4.318B	$4.356B
YoY Change	9.47%	-2.79%	-3.66%
LONG-TERM ASSETS
Property, Plant & Equipment	$519.8M	$497.7M	$475.2M
YoY Change	15.83%	20.85%	63.17%
Goodwill	$2.045B	$2.043B	$2.264B
YoY Change	-7.53%	-5.97%	528.06%
Intangibles	$1.391B	$1.438B	$1.549B
YoY Change	-10.85%	-15.14%	6064.99%
Long-Term Investments
YoY Change
Other Assets	$363.0M	$340.8M	$368.9M
YoY Change	36.47%	31.03%	63.84%
Total Long-Term Assets	$4.556B	$4.527B	$4.874B
YoY Change	-2.92%	-4.58%	333.57%
TOTAL ASSETS
Total Short-Term Assets	$4.724B	$4.318B	$4.356B
Total Long-Term Assets	$4.556B	$4.527B	$4.874B
Total Assets	$9.280B	$8.846B	$9.229B
YoY Change	3.01%	-3.72%	63.49%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$264.3M	$243.2M	$221.4M
YoY Change	30.56%	17.93%	42.9%
Accrued Expenses	$715.2M	$703.7M	$756.4M
YoY Change	7.78%	4.8%	29.63%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$0.00	$250.0M
YoY Change	-100.0%	-100.0%
Total Short-Term Liabilities	$1.700B	$1.653B	$1.943B
YoY Change	-3.88%	-2.8%	48.25%
LONG-TERM LIABILITIES
Long-Term Debt	$3.470B	$3.444B	$3.174B
YoY Change	9.34%	8.55%	41.84%
Other Long-Term Liabilities	$672.3M	$675.9M	$643.0M
YoY Change	14.35%	17.43%	43.54%
Total Long-Term Liabilities	$4.142B	$4.120B	$3.817B
YoY Change	10.12%	9.91%	42.12%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.700B	$1.653B	$1.943B
Total Long-Term Liabilities	$4.142B	$4.120B	$3.817B
Total Liabilities	$6.599B	$6.521B	$6.550B
YoY Change	4.24%	3.47%	60.62%
SHAREHOLDERS EQUITY
Retained Earnings	$654.9M	$376.7M	$733.2M
YoY Change	-8.38%	-59.42%	-28.64%
Common Stock	$2.090B
YoY Change	3.62%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.665B	$2.307B	$2.661B
YoY Change
Total Liabilities & Shareholders Equity	$9.280B	$8.846B	$9.229B
YoY Change	3.01%	-3.72%	63.49%

Cashflow Statement

Concept	2020 Q2	2020 Q1	2019 Q3
OPERATING ACTIVITIES
Net Income	$411.3M	$78.45M	$346.5M
YoY Change	88.78%	-59.29%	-12.48%
Depreciation, Depletion And Amortization	$78.90M	$82.00M	$98.59M
YoY Change	-38.31%	11.72%	512.84%
Cash From Operating Activities	$452.9M	$442.0M	$496.2M
YoY Change	39.18%	170.17%	30.11%
INVESTING ACTIVITIES
Capital Expenditures	-$41.80M	-$43.50M	$32.57M
YoY Change	-25.09%	67.31%	45.84%
Acquisitions			$78.53M
YoY Change			566.24%
Other Investing Activities	-$64.00M	$45.20M	-$114.1M
YoY Change	-174.16%	-102.64%	-133.84%
Cash From Investing Activities	-$105.8M	$1.700M	-$146.7M
YoY Change	-448.03%	-100.1%	-146.59%
FINANCING ACTIVITIES
Cash Dividend Paid		$133.3M	$121.6M
YoY Change			-0.94%
Common Stock Issuance & Retirement, Net			$228.4M
YoY Change			-23.87%
Debt Paid & Issued, Net			$0.00
YoY Change
Cash From Financing Activities	-61.30M	-432.7M	-$373.6M
YoY Change	-85.81%	-149.78%	-16.92%
NET CHANGE
Cash From Operating Activities	452.9M	442.0M	$496.2M
Cash From Investing Activities	-105.8M	1.700M	-$146.7M
Cash From Financing Activities	-61.30M	-432.7M	-$373.6M
Net Change In Cash	285.8M	11.00M	-$27.65M
YoY Change	-474.57%	-101.57%	-111.28%
FREE CASH FLOW
Cash From Operating Activities	$452.9M	$442.0M	$496.2M
Capital Expenditures	-$41.80M	-$43.50M	$32.57M
Free Cash Flow	$494.7M	$485.5M	$463.7M
YoY Change	29.77%	156.07%	29.13%

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	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Entity Central Index Key EntityCentralIndexKey	0000319201
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.75
CY2018Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.75
CY2019Q1	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
CY2020Q1	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	2020-03-31
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	04-2564110
	dei	Entity File Number EntityFileNumber	000-09992
	dei	Entity Registrant Name EntityRegistrantName	KLA CORPORATION
	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	Entity Shell Company EntityShellCompany	false
	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 Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	155048894	shares
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CY2020Q1	klac	Contract With Customer Liability Current System Revenue ContractWithCustomerLiabilityCurrentSystemRevenue	336383000	USD
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	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	-3363000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	-5104000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	-114000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	-442000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	-260000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	-442000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-3655000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-589000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-3103000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-4662000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-19333000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-1379000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-17785000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-6567000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	2904000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	946000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	1252000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	3719000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-4816000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-461000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-1641000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-4380000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-17421000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-1864000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-14657000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-8645000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-425000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-438000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-1103000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-993000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-695000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	3922000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	1104000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	8681000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	432000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-313000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	346000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-1263000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-242000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	680000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-634000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	1759000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-885000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	3555000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	1392000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	8185000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-21536000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1540000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-15265000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4129000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-443000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-83000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-822000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-83000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	56916000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	194268000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	790267000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	953643000	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	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	26944000	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	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
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	78452000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-21536000	USD
CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-443000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-4284000	USD
CY2020Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	311995000	USD
CY2020Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	134238000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	31270000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2325196000	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
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	192728000	USD
CY2019Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-83000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1540000	USD
CY2019Q1	klac	Stock Assumed During Period Value Acquisitions Share Based Payment Arrangement StockAssumedDuringPeriodValueAcquisitionsShareBasedPaymentArrangement	13281000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	1330786000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-371000	USD
CY2019Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	206017000	USD
CY2019Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	114669000	USD
CY2019Q1	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	36578000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	34193000	USD
CY2019Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2885588000	USD
	us-gaap	Profit Loss ProfitLoss	804710000	USD
	us-gaap	Profit Loss ProfitLoss	957689000	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	256649000	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	269112000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	105338000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-22538000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-1394000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-4863000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	85003000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	66026000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	128793000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	92586000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	18208000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	72740000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	29271000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-15057000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	41239000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-17795000	USD
	klac	Increase Decrease In Contract With Customer Liability System Revenue IncreaseDecreaseInContractWithCustomerLiabilitySystemRevenue	54035000	USD
	klac	Increase Decrease In Contract With Customer Liability System Revenue IncreaseDecreaseInContractWithCustomerLiabilitySystemRevenue	-67428000	USD
	klac	Increase Decrease In Contract With Customer Liability Service Revenue IncreaseDecreaseInContractWithCustomerLiabilityServiceRevenue	7574000	USD
	klac	Increase Decrease In Contract With Customer Liability Service Revenue IncreaseDecreaseInContractWithCustomerLiabilityServiceRevenue	-16485000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-18460000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-54768000	USD
	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	21518000	USD
	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	0	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1326004000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	827171000	USD
	klac	Payments To Acquire Non Marketable Securities PaymentsToAcquireNonMarketableSecurities	0	USD
	klac	Payments To Acquire Non Marketable Securities PaymentsToAcquireNonMarketableSecurities	630000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	78600000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1818283000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	110885000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	74652000	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	564655000	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	104770000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	239528000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	491269000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	443107000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	68657000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	62428000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	72619000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	64623000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-153053000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1211421000	USD
	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	742004000	USD
	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	1186263000	USD
	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	250000000	USD
	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	900000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	996033000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	902474000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	829084000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	750216000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	389659000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	350900000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	25285000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	20556000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	40733000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	30575000	USD
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	60000	USD
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	513000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1238280000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	72141000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-4490000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-110000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-69819000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-312219000	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
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	946175000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1092163000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	162718000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	164701000	USD
	us-gaap	Interest Paid Net InterestPaidNet	114662000	USD
	us-gaap	Interest Paid Net InterestPaidNet	55529000	USD
	us-gaap	Stock Issued1 StockIssued1	0	USD
	us-gaap	Stock Issued1 StockIssued1	1330786000	USD
	klac	Noncash Or Part Noncash Acquisition Contingent Consideration Payable NoncashOrPartNoncashAcquisitionContingentConsiderationPayable	6128000	USD
	klac	Noncash Or Part Noncash Acquisition Contingent Consideration Payable NoncashOrPartNoncashAcquisitionContingentConsiderationPayable	6740000	USD
	klac	Noncash Transaction Increase Decrease In Dividends Payable NoncashTransactionIncreaseDecreaseInDividendsPayable	4578000	USD
	klac	Noncash Transaction Increase Decrease In Dividends Payable NoncashTransactionIncreaseDecreaseInDividendsPayable	6494000	USD
	klac	Stock Repurchase Program Unsettled Common Stock Repurchase StockRepurchaseProgramUnsettledCommonStockRepurchase	0	USD
	klac	Stock Repurchase Program Unsettled Common Stock Repurchase StockRepurchaseProgramUnsettledCommonStockRepurchase	5988000	USD
	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	193000	USD
	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	2530000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	17137000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	6370000	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.
CY2020Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1119263000	USD
CY2019Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	990113000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	129150000	USD
	klac	Increase Decrease In Accounts Receivable Percentage IncreaseDecreaseInAccountsReceivablePercentage	0.13
CY2020Q1	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	91382000	USD
CY2019Q3	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	94015000	USD
	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-2633000	USD
	klac	Increase Decrease In Contract With Customer Asset Percentage IncreaseDecreaseInContractWithCustomerAssetPercentage	-0.03
CY2020Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	650996000	USD
CY2019Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	587789000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	63207000	USD
	klac	Increase Decrease In Contract With Customer Liability Percentage IncreaseDecreaseInContractWithCustomerLiabilityPercentage	0.11
	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	54000000.0	USD
	us-gaap	Contract With Customer Asset Cumulative Catch Up Adjustment To Revenue Modification Of Contract ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueModificationOfContract	51300000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	431800000	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	2300000000	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2020Q1	us-gaap	Cash Cash	444500000	USD
CY2020Q1	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	85800000	USD
CY2019Q2	us-gaap	Cash Cash	479800000	USD
CY2019Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	99000000.0	USD
CY2020Q1	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	1131068000	USD
CY2019Q2	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	1002114000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	11805000	USD
CY2019Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12001000	USD
CY2020Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1119263000	USD
CY2019Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	990113000	USD
CY2020Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	449251000	USD
CY2019Q2	us-gaap	Inventory Raw Materials InventoryRawMaterials	444627000	USD
CY2020Q1	us-gaap	Other Inventories Spare Parts OtherInventoriesSpareParts	340191000	USD
CY2019Q2	us-gaap	Other Inventories Spare Parts OtherInventoriesSpareParts	328515000	USD
CY2020Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	324423000	USD
CY2019Q2	us-gaap	Inventory Work In Process InventoryWorkInProcess	285191000	USD
CY2020Q1	us-gaap	Inventory Finished Goods InventoryFinishedGoods	150265000	USD
CY2019Q2	us-gaap	Inventory Finished Goods InventoryFinishedGoods	204167000	USD
CY2020Q1	us-gaap	Inventory Net InventoryNet	1264130000	USD
CY2019Q2	us-gaap	Inventory Net InventoryNet	1262500000	USD
CY2020Q1	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	91382000	USD
CY2019Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	94015000	USD
CY2020Q1	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	71975000	USD
CY2019Q2	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	88387000	USD
CY2020Q1	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	73326000	USD
CY2019Q2	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	70721000	USD
CY2020Q1	us-gaap	Prepaid Taxes PrepaidTaxes	36870000	USD
CY2019Q2	us-gaap	Prepaid Taxes PrepaidTaxes	51889000	USD
CY2020Q1	klac	Other Current Assets OtherCurrentAssets	26988000	USD
CY2019Q2	klac	Other Current Assets OtherCurrentAssets	18065000	USD
CY2020Q1	us-gaap	Other Assets Current OtherAssetsCurrent	300541000	USD
CY2019Q2	us-gaap	Other Assets Current OtherAssetsCurrent	323077000	USD
CY2020Q1	us-gaap	Land Land	67859000	USD
CY2019Q2	us-gaap	Land Land	67883000	USD
CY2019Q2	klac	Buildings And Leasehold Improvements BuildingsAndLeaseholdImprovements	402678000	USD
CY2020Q1	klac	Buildings And Leasehold Improvements BuildingsAndLeaseholdImprovements	398999000	USD
CY2020Q1	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	659048000	USD
CY2019Q2	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	669316000	USD
CY2020Q1	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	30022000	USD
CY2019Q2	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	28282000	USD
CY2020Q1	us-gaap	Construction In Progress Gross ConstructionInProgressGross	79035000	USD
CY2019Q2	us-gaap	Construction In Progress Gross ConstructionInProgressGross	26029000	USD
CY2020Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1234963000	USD
CY2019Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1194188000	USD
CY2020Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	737220000	USD
CY2019Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	745389000	USD
CY2020Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	497743000	USD
CY2019Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	448799000	USD
CY2020Q1	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	187936000	USD
CY2019Q2	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	207581000	USD
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	98104000	USD
CY2020Q1	klac	Other Non Current Assets OtherNonCurrentAssets	54767000	USD
CY2019Q2	klac	Other Non Current Assets OtherNonCurrentAssets	58392000	USD
CY2020Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	340807000	USD
CY2019Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	265973000	USD
CY2020Q1	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	287012000	USD
CY2019Q2	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	226462000	USD
CY2020Q1	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	189331000	USD
CY2019Q2	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	208926000	USD
CY2020Q1	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	124109000	USD
CY2019Q2	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	133677000	USD
CY2020Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	164195000	USD
CY2019Q2	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	202647000	USD
CY2020Q1	us-gaap	Taxes Payable Current TaxesPayableCurrent	31601000	USD
CY2019Q2	us-gaap	Taxes Payable Current TaxesPayableCurrent	23350000	USD
CY2020Q1	us-gaap	Interest And Dividends Payable Current InterestAndDividendsPayableCurrent	34651000	USD
CY2019Q2	us-gaap	Interest And Dividends Payable Current InterestAndDividendsPayableCurrent	31992000	USD
CY2020Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	28520000	USD
CY2020Q1	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	859419000	USD
CY2019Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	827054000	USD
CY2020Q1	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	383356000	USD
CY2019Q2	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	392266000	USD
CY2020Q1	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	80628000	USD
CY2019Q2	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	79622000	USD
CY2020Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	67524000	USD
CY2020Q1	klac	Other Noncurrent Liabilities1 OtherNoncurrentLiabilities1	144436000	USD
CY2019Q2	klac	Other Noncurrent Liabilities1 OtherNoncurrentLiabilities1	116009000	USD
CY2020Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	675944000	USD
CY2019Q2	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	587897000	USD
CY2020Q1	klac	Cash Cash Equivalentsand Availableforsale Debt Securities Excluding Time Deposits Amortized Cost CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDepositsAmortizedCost	1104497000	USD
CY2020Q1	klac	Cash Cash Equivalents And Availableforsale Debt Securities Accumulated Gross Unrealized Gain CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGain	3036000	USD
CY2020Q1	klac	Cash Cash Equivalents And Availableforsale Debt Securities Accumulated Gross Unrealized Losses CashCashEquivalentsAndAvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLosses	3320000	USD
CY2020Q1	klac	Cash Cash Equivalentsand Availableforsale Debt Securities Excluding Time Deposits CashCashEquivalentsandAvailableforsaleDebtSecuritiesExcludingTimeDeposits	1104213000	USD
CY2020Q1	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	85834000	USD
CY2020Q1	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	85834000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	688639000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	3036000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	3319000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	688356000	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
CY2020Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	182	investment
CY2020Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	320429000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	3319000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	329627000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	329836000	USD
CY2020Q1	klac	Debt Securities Availableforsale Maturity Allocatedand Single Maturity Dateafter One Through Three Years Amortized Cost DebtSecuritiesAvailableforsaleMaturityAllocatedandSingleMaturityDateafterOneThroughThreeYearsAmortizedCost	359012000	USD
CY2020Q1	klac	Debt Securities Availableforsale Maturity Allocatedand Single Maturity Dateafter One Through Three Years Fair Value DebtSecuritiesAvailableforsaleMaturityAllocatedandSingleMaturityDateafterOneThroughThreeYearsFairValue	358520000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	688639000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	688356000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	37200000	USD
CY2019Q1	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	3	company
CY2019Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	25868000	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	34038000	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	256649000	USD
	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-119000	USD
CY2020Q1	us-gaap	Goodwill Goodwill	2043129000	USD
	klac	Goodwill Impairment Income Approach Percent GoodwillImpairmentIncomeApproachPercent	0.75
	klac	Goodwill Impairment Market Approach Percent GoodwillImpairmentMarketApproachPercent	0.25
CY2020Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1738641000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	476532000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1262109000	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
CY2020Q1	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	1914476000	USD
CY2020Q1	klac	Finite Lived Intangible Assets Accumulated Amortization And Other Accumulated Adjustment FiniteLivedIntangibleAssetsAccumulatedAmortizationAndOtherAccumulatedAdjustment	476632000	USD
CY2020Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1437844000	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
CY2020Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	54605000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	169265000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	28613000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	51137000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	196847000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	194269000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	193177000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	190660000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	436019000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1262109000	USD
CY2020Q1	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3475000000	USD
CY2019Q2	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3450000000	USD
CY2020Q1	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	8375000	USD
CY2019Q2	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	8738000	USD
CY2020Q1	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	22688000	USD
CY2019Q2	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	17880000	USD
CY2020Q1	us-gaap	Long Term Debt LongTermDebt	3443937000	USD
CY2019Q2	us-gaap	Long Term Debt LongTermDebt	3423382000	USD
CY2020Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2019Q2	us-gaap	Long Term Debt Current LongTermDebtCurrent	249999000	USD
CY2020Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3443937000	USD
CY2019Q2	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3173383000	USD
CY2020Q1	us-gaap	Long Term Debt LongTermDebt	3443937000	USD
CY2019Q2	us-gaap	Long Term Debt LongTermDebt	3423382000	USD
CY2020Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	25000000.0	USD
CY2020Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	3450000000	USD
CY2020Q1	us-gaap	Operating Lease Expense OperatingLeaseExpense	8700000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	26300000	USD
CY2020Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y10M24D
CY2020Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0164
	us-gaap	Operating Lease Payments OperatingLeasePayments	26048000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	13986000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	8146000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	27667000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	20656000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	13926000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	9046000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	20463000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	99904000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3860000	USD
CY2020Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	96044000	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
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	11613000	shares
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	10823000	shares
CY2020Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	31270000	USD
CY2019Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	34193000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	85003000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	66026000	USD
CY2020Q1	klac	Stock Based Compensation Capitalized As Inventory StockBasedCompensationCapitalizedAsInventory	5089000	USD
CY2019Q2	klac	Stock Based Compensation Capitalized As Inventory StockBasedCompensationCapitalizedAsInventory	4819000	USD
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate	0.15
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CY2020Q1	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	0	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	0	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	24500000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	20556000	USD
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	0	shares
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	0	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
CY2020Q1	klac	Tax Benefits From Espp TaxBenefitsFromEspp	945000	USD
CY2019Q1	klac	Tax Benefits From Espp TaxBenefitsFromEspp	444000	USD
	klac	Tax Benefits From Espp TaxBenefitsFromEspp	2798000	USD
	klac	Tax Benefits From Espp TaxBenefitsFromEspp	1047000	USD
CY2020Q1	klac	Weighted Average Fair Value Per Share WeightedAverageFairValuePerShare	43.36
CY2019Q1	klac	Weighted Average Fair Value Per Share WeightedAverageFairValuePerShare	21.25
	klac	Weighted Average Fair Value Per Share WeightedAverageFairValuePerShare	36.70
	klac	Weighted Average Fair Value Per Share WeightedAverageFairValuePerShare	21.67
CY2020Q1	klac	Espp Maximum Annual Share Replenishment ESPPMaximumAnnualShareReplenishment	2000000.0	shares
CY2020Q1	klac	Number Of Espp Shares Available For Future Issuance NumberOfEsppSharesAvailableForFutureIssuance	2400000	shares
CY2020Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	311995000	USD
CY2019Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	206017000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	821084000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	756204000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	78452000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	192728000	USD
	us-gaap	Net Income Loss NetIncomeLoss	805532000	USD
	us-gaap	Net Income Loss NetIncomeLoss	957772000	USD
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	156067000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	156349000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	157356000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	154561000	shares
CY2020Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1105000	shares
CY2019Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	833000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1230000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	749000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	157172000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	157182000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	158586000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	155310000	shares
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.50
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.23
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.12
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.20
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.50
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.23
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.08
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.17
CY2020Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1000	shares
CY2019Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	42000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	313000	shares
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	115199000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	221390000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	911642000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1064921000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37190000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28745000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	106932000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	107232000	USD
CY2020Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.323
CY2019Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.130
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.117
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.101
CY2020Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	256600000	USD
CY2020Q1	klac	Receivables Sold Under Factoring Agreements ReceivablesSoldUnderFactoringAgreements	62440000	USD
CY2019Q1	klac	Receivables Sold Under Factoring Agreements ReceivablesSoldUnderFactoringAgreements	48243000	USD
	klac	Receivables Sold Under Factoring Agreements ReceivablesSoldUnderFactoringAgreements	235795000	USD
	klac	Receivables Sold Under Factoring Agreements ReceivablesSoldUnderFactoringAgreements	149597000	USD
CY2020Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	26572000	USD
CY2019Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	40303000	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	47178000	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	59534000	USD
CY2020Q1	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	926000000.0	USD
CY2020Q1	klac	Long Term Incentive Plan Committed Amount LongTermIncentivePlanCommittedAmount	154800000	USD
	klac	Guarantee Arrangements To Fund Customs Guarantees For Vat And Lc GuaranteeArrangementsToFundCustomsGuaranteesForVatAndLc	74800000	USD
	klac	Outstanding Guarantee Arrangements To Fund Customs Guarantees For Vat And Lc OutstandingGuaranteeArrangementsToFundCustomsGuaranteesForVatAndLc	66500000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1423964000	USD
CY2020Q1	klac	Cost Of Revenue And Operating Expense CostOfRevenueAndOperatingExpense	1248000000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	39231000	USD
CY2020Q1	us-gaap	Interest And Other Income InterestAndOtherIncome	1004000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1097311000	USD
CY2019Q1	us-gaap	Cost Of Revenue CostOfRevenue	486945000	USD
CY2019Q1	us-gaap	Interest Expense InterestExpense	31187000	USD
CY2019Q1	us-gaap	Interest And Other Income InterestAndOtherIncome	9282000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4346831000	USD
	klac	Cost Of Revenue And Operating Expense CostOfRevenueAndOperatingExpense	3297788000	USD
	us-gaap	Interest Expense InterestExpense	120053000	USD
	us-gaap	Interest And Other Income InterestAndOtherIncome	5190000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3310469000	USD
	us-gaap	Cost Of Revenue CostOfRevenue	1276592000	USD
	us-gaap	Interest Expense InterestExpense	84087000	USD
	us-gaap	Interest And Other Income InterestAndOtherIncome	28535000	USD
CY2020Q1	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	782000	USD
	us-gaap	Derivative Remaining Maturity1 DerivativeRemainingMaturity1	P7M
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
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
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	2904000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	946000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	1252000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	3719000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-19333000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-1379000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-17785000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-6567000	USD
CY2020Q1	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	-29828000	USD
CY2019Q1	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	-7940000	USD
CY2020Q1	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	-29828000	USD
CY2019Q1	klac	Aoci Cash Flow Hedge Cumulative Gain Loss Before Tax AOCICashFlowHedgeCumulativeGainLossBeforeTax	-7940000	USD
CY2020Q1	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	10558000	USD
CY2020Q1	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2020Q1	us-gaap	Derivative Assets DerivativeAssets	10558000	USD
CY2020Q1	us-gaap	Derivative Asset Not Offset Policy Election Deduction DerivativeAssetNotOffsetPolicyElectionDeduction	782000	USD
CY2020Q1	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2020Q1	us-gaap	Derivative Asset Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	9776000	USD
CY2020Q1	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	USD
CY2020Q1	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	906000	USD
CY2020Q1	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2020Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	906000	USD
CY2020Q1	us-gaap	Derivative Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	124000	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
CY2020Q1	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	76000	USD
CY2019Q1	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1972000	USD
	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	3911000	USD
	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1985000	USD
CY2020Q1	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	9000	USD
CY2019Q1	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	354000	USD
	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	733000	USD
	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	2560000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1423964000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1097311000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4346831000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3310469000	USD
CY2020Q1	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	215433000	USD
CY2019Q1	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	184887000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	646764000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	504320000	USD
CY2020Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	185760000	USD
CY2019Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	182184000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	566358000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	409084000	USD
CY2020Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	256649000	USD
CY2019Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	256649000	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	39231000	USD
CY2019Q1	us-gaap	Interest Expense InterestExpense	31187000	USD
	us-gaap	Interest Expense InterestExpense	120053000	USD
	us-gaap	Interest Expense InterestExpense	84087000	USD
CY2020Q1	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-22538000	USD
CY2019Q1	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-22538000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2020Q1	us-gaap	Interest And Other Income InterestAndOtherIncome	1004000	USD
CY2019Q1	us-gaap	Interest And Other Income InterestAndOtherIncome	9282000	USD
	us-gaap	Interest And Other Income InterestAndOtherIncome	5190000	USD
	us-gaap	Interest And Other Income InterestAndOtherIncome	28535000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	115199000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	221390000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	911642000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1064921000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1423964000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1097311000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4346831000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3310469000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1423964000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1097311000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4346831000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3310469000	USD
CY2020Q1	us-gaap	Noncurrent Assets NoncurrentAssets	497743000	USD
CY2019Q2	us-gaap	Noncurrent Assets NoncurrentAssets	448799000	USD
CY2020Q1	us-gaap	Restructuring Charges RestructuringCharges	3700000	USD
	us-gaap	Restructuring Charges RestructuringCharges	6500000	USD
CY2020Q1	us-gaap	Restructuring Reserve RestructuringReserve	5200000	USD

Files In Submission

Name	View Source	Status
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0000319201-20-000026-index.html	Edgar Link	pending
0000319201-20-000026.txt	Edgar Link	pending
0000319201-20-000026-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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$KLAC
KLA CORP Stock $klac

2020 Q2 Form 10-Q Financial Statement

#000031920120000026 Filed on May 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KLAC KLA CORP Stock $klac

2020 Q2 Form 10-Q Financial Statement

#000031920120000026 Filed on May 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KLAC
KLA CORP Stock $klac