$LRCX
LAM RESEARCH CORP Stock $lrcx

$lrcx Overview Financials Valuation SEC Filings Company Website

2014 Q2 Form 10-K Financial Statement

#000119312515290023 Filed on August 13, 2015

Income Statement

Concept	2014 Q2	2013 Q2	2013
Revenue	$1.249B	$986.2M	$3.599B
YoY Change	26.63%	32.95%	35.03%
Cost Of Revenue	$691.8M	$572.3M	$2.196B
YoY Change	20.88%	31.96%	38.88%
Gross Profit	$557.0M	$413.9M	$1.403B
YoY Change	34.57%	34.34%	29.43%
Gross Profit Margin	44.6%	41.97%	38.99%
Selling, General & Admin	$155.7M	$148.2M	$601.3M
YoY Change	5.06%	5.11%	49.66%
% of Gross Profit	27.95%	35.81%	42.86%
Research & Development	$185.4M	$180.2M	$683.7M
YoY Change	2.89%	44.74%	53.79%
% of Gross Profit	33.29%	43.54%	48.73%
Depreciation & Amortization	$71.20M	$76.00M	$126.5M
YoY Change	-6.32%	119.65%	70.95%
% of Gross Profit	12.78%	18.36%	9.02%
Operating Expenses	$341.1M	$327.4M	$1.285B
YoY Change	4.18%	23.31%	51.83%
Operating Profit	$215.9M	$86.50M	$118.1M
YoY Change	149.6%	103.05%	-50.33%
Interest Expense	-$9.900M	-$14.40M	$60.41M
YoY Change	-31.25%	144.07%	55.04%
% of Operating Profit	-4.59%	-16.65%	51.16%
Other Income/Expense, Net	$400.0K	$2.100M	-$51.41M
YoY Change	-80.95%	-223.53%	54.32%
Pretax Income	$289.5M	$74.20M	-$46.39M
YoY Change	290.16%	225.44%	567.51%
Income Tax	$56.10M	-$11.50M	-$47.22M
% Of Pretax Income	19.38%	-15.5%
Net Earnings	$233.4M	$85.70M	$113.9M
YoY Change	172.35%	373.48%	-32.51%
Net Earnings / Revenue	18.69%	8.69%	3.16%
Basic Earnings Per Share			$0.67
Diluted Earnings Per Share	$1.262M	$501.8K	$0.66
COMMON SHARES
Basic Shares Outstanding	162.1M shares	162.7M shares	168.9M shares
Diluted Shares Outstanding			173.4M shares

Balance Sheet

Concept	2014 Q2	2013 Q2	2013
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.066B	$2.497B	$2.497B
YoY Change	22.79%	-12.78%	-12.78%
Cash & Equivalents	$1.453B	$1.162B	$1.162B
Short-Term Investments	$1.613B	$1.335B	$1.335B
Other Short-Term Assets	$177.0M	$135.0M	$135.0M
YoY Change	31.11%	-12.34%	-12.34%
Inventory	$740.5M	$559.3M	$559.0M
Prepaid Expenses
Receivables	$800.6M	$602.6M	$603.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$4.784B	$3.794B	$3.794B
YoY Change	26.09%	-14.07%	-14.07%
LONG-TERM ASSETS
Property, Plant & Equipment	$543.5M	$603.9M	$604.0M
YoY Change	-10.0%	3.3%	3.25%
Goodwill	$1.466B	$1.452B
YoY Change	0.97%	0.41%
Intangibles	$894.1M	$1.074B
YoY Change	-16.78%	-13.39%
Long-Term Investments	$117.0M	$98.00M	$98.00M
YoY Change	19.39%
Other Assets	$159.4M	$159.5M	$228.0M
YoY Change	-0.09%	5.02%	-28.3%
Total Long-Term Assets	$3.210B	$3.456B	$3.456B
YoY Change	-7.14%	-3.71%	-3.73%
TOTAL ASSETS
Total Short-Term Assets	$4.784B	$3.794B	$3.794B
Total Long-Term Assets	$3.210B	$3.456B	$3.456B
Total Assets	$7.993B	$7.250B	$7.250B
YoY Change	10.25%	-9.42%	-9.43%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$223.5M	$200.3M	$200.0M
YoY Change	11.62%	-22.62%	-22.78%
Accrued Expenses	$604.3M	$464.5M	$307.0M
YoY Change	30.09%	-5.62%	-9.17%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$516.6M	$513.0M	$515.0M
YoY Change	0.7%	0.67%	0.78%
Total Short-Term Liabilities	$1.582B	$1.404B	$1.404B
YoY Change	12.64%	-1.57%	-1.61%
LONG-TERM LIABILITIES
Long-Term Debt	$806.9M	$777.4M	$976.0M
YoY Change	3.79%	3.75%	2.52%
Other Long-Term Liabilities	$122.7M	$134.3M	$381.0M
YoY Change	-8.67%	-38.83%	-22.87%
Total Long-Term Liabilities	$929.6M	$911.7M	$1.357B
YoY Change	1.96%	-5.9%	-6.15%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.582B	$1.404B	$1.404B
Total Long-Term Liabilities	$929.6M	$911.7M	$1.357B
Total Liabilities	$2.780B	$2.575B	$2.761B
YoY Change	7.99%	-4.03%	-3.9%
SHAREHOLDERS EQUITY
Retained Earnings	$3.576B	$2.973B
YoY Change	20.29%	3.98%
Common Stock	$162.0K	$163.0K
YoY Change	-0.61%	-12.83%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$3.757B	$3.540B
YoY Change	6.14%	34.24%
Treasury Stock Shares	92.87M shares	89.21M shares
Shareholders Equity	$5.030B	$4.489B	$4.489B
YoY Change
Total Liabilities & Shareholders Equity	$7.993B	$7.250B	$7.250B
YoY Change	10.25%	-9.42%	-9.43%

Cashflow Statement

Concept	2014 Q2	2013 Q2	2013
OPERATING ACTIVITIES
Net Income	$233.4M	$85.70M	$113.9M
YoY Change	172.35%	373.48%	-32.51%
Depreciation, Depletion And Amortization	$71.20M	$76.00M	$126.5M
YoY Change	-6.32%	119.65%	70.95%
Cash From Operating Activities	$245.8M	$175.0M	$719.9M
YoY Change	40.46%	80.97%	44.27%
INVESTING ACTIVITIES
Capital Expenditures	-$41.80M	-$43.10M	-$160.8M
YoY Change	-3.02%	16.8%	49.86%
Acquisitions			$9.916M
YoY Change			-102.37%
Other Investing Activities	-$32.70M	-$17.50M	-$77.80M
YoY Change	86.86%	-102.34%	-120.64%
Cash From Investing Activities	-$74.50M	-$60.70M	-$238.6M
YoY Change	22.73%	-108.53%	-188.47%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$916.3M
YoY Change			18.86%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-11.30M	26.90M	-887.8M
YoY Change	-142.01%	-104.12%	28.16%
NET CHANGE
Cash From Operating Activities	245.8M	175.0M	719.9M
Cash From Investing Activities	-74.50M	-60.70M	-238.6M
Cash From Financing Activities	-11.30M	26.90M	-887.8M
Net Change In Cash	160.0M	141.2M	-406.5M
YoY Change	13.31%	-8.96%	-634.81%
FREE CASH FLOW
Cash From Operating Activities	$245.8M	$175.0M	$719.9M
Capital Expenditures	-$41.80M	-$43.10M	-$160.8M
Free Cash Flow	$287.6M	$218.1M	$880.7M
YoY Change	31.87%	63.25%	45.26%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2014Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	92867000	shares
CY2014Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	45.83
CY2014Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	162350000	shares
CY2014Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1331886	shares
CY2014Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2014Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2014Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	162350000	shares
CY2014Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2014Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	5635469	shares
CY2014Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	32.20
CY2014Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2014Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2014Q2	us-gaap	Liabilities Current LiabilitiesCurrent	1582001000
CY2014Q2	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	830895000
CY2014Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5239567000
CY2014Q2	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	258357000
CY2014Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	553299000
CY2014Q2	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	40286000
CY2014Q2	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	604296000
CY2014Q2	us-gaap	Liabilities Liabilities	2780222000
CY2014Q2	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	11409000
CY2014Q2	us-gaap	Taxes Payable Current TaxesPayableCurrent	93934000
CY2014Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	68324000
CY2014Q2	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	29000000
CY2014Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	453085000
CY2014Q2	us-gaap	Common Stock Value CommonStockValue	162000
CY2014Q2	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	294159000
CY2014Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4962000
CY2014Q2	us-gaap	Dividends Payable Current DividendsPayableCurrent	29240000
CY2014Q2	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	352112000
CY2014Q2	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	69385000
CY2014Q2	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	122662000
CY2014Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-28655000
CY2014Q2	us-gaap	Deferred Compensation Arrangement With Individual Recorded Liability DeferredCompensationArrangementWithIndividualRecordedLiability	93800000
CY2014Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2014Q2	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	311054000
CY2014Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	74439000
CY2014Q2	us-gaap	Preferred Stock Value PreferredStockValue
CY2014Q2	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	269400000
CY2014Q2	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	101744000
CY2014Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3575737000
CY2014Q2	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	87329000
CY2014Q2	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	5673000
CY2014Q2	us-gaap	Stockholders Equity StockholdersEquity	5029735000
CY2014Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7993306000
CY2014Q2	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	817202000
CY2014Q2	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	518267000
CY2014Q2	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	183349000
CY2014Q2	us-gaap	Other Deferred Credits Current OtherDeferredCreditsCurrent	235923000
CY2014Q2	us-gaap	Accounts Payable Current AccountsPayableCurrent	223515000
CY2014Q2	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	199544000
CY2014Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	894078000
CY2014Q2	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	170028000
CY2014Q2	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	164316000
CY2014Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	543496000
CY2014Q2	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	20026000
CY2014Q2	us-gaap	Assets Current AssetsCurrent	4783662000
CY2014Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	18019000
CY2014Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	46283000
CY2014Q2	us-gaap	Land Land	52784000
CY2014Q2	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	3233894000
CY2014Q2	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	131184000
CY2014Q2	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	16257000
CY2014Q2	us-gaap	Goodwill Goodwill	1466225000
CY2014Q2	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	449623000
CY2014Q2	us-gaap	Short Term Investments ShortTermInvestments	1612967000
CY2014Q2	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	12661000
CY2014Q2	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	1452677000
CY2014Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1327063000
CY2014Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	873978000
CY2014Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-24738000
CY2014Q2	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	80569000
CY2014Q2	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	20100000
CY2014Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1452677000
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CY2014Q2	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	126564000
CY2014Q2	us-gaap	Treasury Stock Value TreasuryStockValue	3757076000
CY2014Q2	us-gaap	Assets Assets	7993306000
CY2014Q2	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	343860000
CY2014Q2	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	1347163000
CY2014Q2	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	176899000
CY2014Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	800616000
CY2014Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1096795000
CY2014Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	126895000
CY2014Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	159353000
CY2014Q2	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	21758000
CY2014Q2	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	269421000
CY2014Q2	us-gaap	Inventory Net InventoryNet	740503000
CY2014Q2	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	612688000
CY2014Q2	lrcx	Assets Correlated To Deferred Compensation Obligation AssetsCorrelatedToDeferredCompensationObligation	116700000
CY2014Q2	lrcx	Investments Amortized Cost InvestmentsAmortizedCost	3228743000
CY2014Q2	lrcx	Investments Unrealized Gain InvestmentsUnrealizedGain	6551000
CY2014Q2	lrcx	Restricted Cash Fair Value Disclosure RestrictedCashFairValueDisclosure	146492000
CY2014Q2	lrcx	Short Term Investments Fair Value Disclosure ShortTermInvestmentsFairValueDisclosure	1612967000
CY2014Q2	lrcx	Investments Unrealized Loss InvestmentsUnrealizedLoss	1400000
CY2015Q2	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	622695	shares
CY2015Q2	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	835832	shares
CY2015Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	835832	shares
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CY2015Q2	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	29.29
CY2015Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2015Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	158531000	shares
CY2015Q2	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	37.44
CY2015Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2015Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	4954088	shares
CY2015Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	37.44
CY2015Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	99562000	shares
CY2015Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	60.13
CY2015Q2	us-gaap	Dividends Payable Current DividendsPayableCurrent	47659000
CY2015Q2	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	363552000
CY2015Q2	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	93209000
CY2015Q2	us-gaap	Foreign Currency Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months	-200000
CY2015Q2	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	7223000
CY2015Q2	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	14004000
CY2015Q2	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	1524000
CY2015Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4890000
CY2015Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	158531000	shares
CY2015Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2015Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2015Q2	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	70000
CY2015Q2	us-gaap	Liabilities Current LiabilitiesCurrent	2631361000
CY2015Q2	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	970000
CY2015Q2	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	316587000
CY2015Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5366773000
CY2015Q2	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	3300000000
CY2015Q2	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	202930000
CY2015Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	629543000
CY2015Q2	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	5223000
CY2015Q2	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	66412000
CY2015Q2	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	649438000
CY2015Q2	us-gaap	Liabilities Liabilities	4019696000
CY2015Q2	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	12502000
CY2015Q2	us-gaap	Taxes Payable Current TaxesPayableCurrent	39275000
CY2015Q2	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	10811000
CY2015Q2	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	980000
CY2015Q2	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	980000
CY2015Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	93209000
CY2015Q2	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	30200000
CY2015Q2	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	7422000
CY2015Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	609836000
CY2015Q2	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	189955000
CY2015Q2	us-gaap	Common Stock Value CommonStockValue	159000
CY2015Q2	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	318365000
CY2015Q2	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	184023000
CY2015Q2	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	970000
CY2015Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-57796000
CY2015Q2	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	202900000
CY2015Q2	us-gaap	Deferred Compensation Arrangement With Individual Recorded Liability DeferredCompensationArrangementWithIndividualRecordedLiability	113400000
CY2015Q2	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	58544000
CY2015Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2015Q2	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	238631000
CY2015Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	728140000
CY2015Q2	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	129234000
CY2015Q2	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	134300000
CY2015Q2	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	314516000
CY2015Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	85620000
CY2015Q2	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	1630000
CY2015Q2	us-gaap	Preferred Stock Value PreferredStockValue
CY2015Q2	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	276800000
CY2015Q2	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	154779000
CY2015Q2	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	6544000
CY2015Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4096855000
CY2015Q2	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	64725000
CY2015Q2	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6100000
CY2015Q2	us-gaap	Stockholders Equity StockholdersEquity	5103144000
CY2015Q2	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	4847000
CY2015Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9364648000
CY2015Q2	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1001382000
CY2015Q2	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	77000
CY2015Q2	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1359650000
CY2015Q2	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	9077000
CY2015Q2	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	77000
CY2015Q2	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	241808000
CY2015Q2	us-gaap	Other Deferred Credits Current OtherDeferredCreditsCurrent	322070000
CY2015Q2	us-gaap	Purchase Obligation PurchaseObligation	193855000
CY2015Q2	us-gaap	Accounts Payable Current AccountsPayableCurrent	300203000
CY2015Q2	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	17593000
CY2015Q2	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	235437000
CY2015Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	621418000
CY2015Q2	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	21629000
CY2015Q2	us-gaap	Assets Current AssetsCurrent	6270849000
CY2015Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	21086000
CY2015Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	37961000
CY2015Q2	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Undistributed Earnings Of Foreign Subsidiaries DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries	859000000
CY2015Q2	us-gaap	Land Land	53391000
CY2015Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	1944674000
CY2015Q2	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	4280918000
CY2015Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	154122000
CY2015Q2	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	137623000
CY2015Q2	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	15167000
CY2015Q2	us-gaap	Goodwill Goodwill	1387509000
CY2015Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1651592000
CY2015Q2	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	566645000
CY2015Q2	us-gaap	Short Term Investments ShortTermInvestments	2574947000
CY2015Q2	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	13942000
CY2015Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	1705093000
CY2015Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3975762000
CY2015Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	49700000
CY2015Q2	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	61100000
CY2015Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1651673000
CY2015Q2	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	131000
CY2015Q2	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	1501539000
CY2015Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1328876000
CY2015Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	719040000
CY2015Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	6034000
CY2015Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-93477000
CY2015Q2	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	81899000
CY2015Q2	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	9100000
CY2015Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1501539000
CY2015Q2	us-gaap	Restricted Cash And Investments Noncurrent RestrictedCashAndInvestmentsNoncurrent	170969000
CY2015Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	33360000
CY2015Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	152918000
CY2015Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	156074000
CY2015Q2	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	141264000
CY2015Q2	us-gaap	Treasury Stock Value TreasuryStockValue	4302847000
CY2015Q2	us-gaap	Assets Assets	9364648000
CY2015Q2	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	310508000
CY2015Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	1940529000
CY2015Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	318000
CY2015Q2	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	1337976000
CY2015Q2	us-gaap	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals	478000
CY2015Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	91380000
CY2015Q2	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	157435000
CY2015Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	38505000
CY2015Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1093582000
CY2015Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1250961000
CY2015Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	131079000
CY2015Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	185763000
CY2015Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	6352000
CY2015Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	1666588000
CY2015Q2	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	33463000
CY2015Q2	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	224888000
CY2015Q2	us-gaap	Inventory Net InventoryNet	943346000
CY2015Q2	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	717788000
CY2015Q2	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	3970792000
CY2015Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	114846000
CY2015Q2	lrcx	Assets Correlated To Deferred Compensation Obligation AssetsCorrelatedToDeferredCompensationObligation	138900000
CY2015Q2	lrcx	Investments Unrealized Gain InvestmentsUnrealizedGain	4261000
CY2015Q2	lrcx	Investments Amortized Cost InvestmentsAmortizedCost	4283009000
CY2015Q2	lrcx	Available For Sale Securities Debt Maturities After Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsAmortizedCost	379496000
CY2015Q2	lrcx	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next10 Years InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext10Years	-3100000
CY2015Q2	lrcx	Available For Sale Securities Debt Maturities After Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue	378590000
CY2015Q2	lrcx	Number Of Operating Locations NumberOfOperatingLocations	7	Location
CY2015Q2	lrcx	Restricted Cash Fair Value Disclosure RestrictedCashFairValueDisclosure	170969000
CY2015Q2	lrcx	Short Term Investments Fair Value Disclosure ShortTermInvestmentsFairValueDisclosure	2574947000
CY2015Q2	lrcx	Investments Unrealized Loss InvestmentsUnrealizedLoss	6352000
CY2015Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	158186976	shares
CY2014Q3	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	534174000
CY2014Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	488480000
CY2014Q4	dei	Entity Public Float EntityPublicFloat	8838403605
CY2015Q1	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	376003000
CY2012Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3902077	shares
CY2012Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	4331478	shares
CY2012Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	25.14
CY2012Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	41.01
CY2012Q2	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	343837000
CY2012Q2	us-gaap	Stockholders Equity StockholdersEquity	5131781000
CY2012Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1564752000
CY2013Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2570923	shares
CY2013Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	4841796	shares
CY2013Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	26.87
CY2013Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	39.32
CY2013Q2	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	333114000
CY2013Q2	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	58078000
CY2013Q2	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	257700000
CY2013Q2	us-gaap	Stockholders Equity StockholdersEquity	4488872000
CY2013Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	603910000
CY2013Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	44919000
CY2013Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1162473000
CY2013Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	36870000
CY2015Q1	us-gaap	Debt Instrument Redemption Description DebtInstrumentRedemptionDescription	The Company may redeem the Senior Notes at par, plus accrued and unpaid interest at any time on or after February 15, 2020 for the 2020 Notes and on or after December 24, 2024 for the 2025 Notes. In addition, upon the occurrence of certain events, as described in the indenture, the Company will be required to make an offer to repurchase the Senior Notes at a price equal to 101% of the principal amount of the Senior Notes, plus accrued and unpaid interest.
CY2015Q1	us-gaap	Debt Instrument Redemption Price Percentage Of Principal Amount Redeemed DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed	1.00	pure
CY2014	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	6898000	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	166455	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	41.16
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.18
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	281476	shares
CY2014	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	78000	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	2473	shares
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	632327000
CY2014	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	1658000
CY2014	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	30227000
CY2014	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	34791000
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	723363000
CY2014	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	103700000
CY2014	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-37396000
CY2014	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	87922000
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	677669000
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-1615000
CY2014	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1572000
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	51.76
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	164741000	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	53.21
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	717049000
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	1736453	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	2811602	shares
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	30.21
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	24.75
CY2014	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1403019	shares
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.84
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	40.39
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	174503000	shares
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.62
CY2014	us-gaap	Income Tax Holiday Income Tax Benefits Per Share IncomeTaxHolidayIncomeTaxBenefitsPerShare	0.04
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2014	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2864000	shares
CY2014	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	6065000
CY2014	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1529000
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	645287000
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	190058000
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	18157000
CY2014	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-2838000
CY2014	us-gaap	Sales Revenue Net SalesRevenueNet	4607309000
CY2014	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	201549000
CY2014	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	12507000
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	33003000
CY2014	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-28085000
CY2014	us-gaap	Investment Income Interest InvestmentIncomeInterest	12540000
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-2888000
CY2014	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	1500000
CY2014	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	3665000
CY2014	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	5973000
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	8004000
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	31993000
CY2014	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	83090000
CY2014	us-gaap	Interest Expense InterestExpense	61692000
CY2014	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2014	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	2000000
CY2014	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	42926000
CY2014	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	145503000
CY2014	us-gaap	Interest Paid InterestPaid	26489000
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-493000
CY2014	us-gaap	Income Tax Holiday Aggregate Dollar Amount IncomeTaxHolidayAggregateDollarAmount	7400000
CY2014	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	3392000
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	78076000
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	6225000
CY2014	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	202000
CY2014	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	11923000
CY2014	us-gaap	Net Income Loss NetIncomeLoss	632289000
CY2014	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-12669000
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	16937000
CY2014	us-gaap	Gross Profit GrossProfit	2007481000
CY2014	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	15650000
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1407000
CY2014	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1312244000
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	38000
CY2014	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	9069000
CY2014	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	4192000
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	244859000
CY2014	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	1895000
CY2014	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	80280000
CY2014	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	34791000
CY2014	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	1028278000
CY2014	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1104000
CY2014	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	42926000
CY2014	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	42454000
CY2014	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	156397000
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	4182000
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	41379000
CY2014	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	35482000
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1884000
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	10692000
CY2014	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	4000000
CY2014	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	16048000
CY2014	us-gaap	Asset Impairment Charges AssetImpairmentCharges	11632000
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7537000
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	290204000
CY2014	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	10886000
CY2014	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	12000000
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3192000
CY2014	us-gaap	Depreciation And Amortization DepreciationAndAmortization	292254000
CY2014	us-gaap	Operating Expenses OperatingExpenses	1329812000
CY2014	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-2976000
CY2014	us-gaap	Depreciation Depreciation	129100000
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-162735000
CY2014	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	163200000
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-165000
CY2014	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	2323000
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	253177000
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-735000
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	91074000
CY2014	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	2203000
CY2014	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	29500000
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	10892000
CY2014	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2599828000
CY2014	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-242000
CY2014	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	18704000
CY2014	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-1707000
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	31762000
CY2014	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-164130000
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-869000
CY2014	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	46297000
CY2014	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	6065000
CY2014	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	10200000
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	103700000
CY2014	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	7600000
CY2014	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	613341000
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	550000
CY2014	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-5667000
CY2014	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	29240000
CY2014	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	23167000
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-1065000
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-265214000
CY2014	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	253185000
CY2014	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	716471000
CY2014	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	0
CY2014	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	78608000
CY2014	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	49273000
CY2014	lrcx	Deferred Income Tax Expense Benefit Share Based Compensation DeferredIncomeTaxExpenseBenefitShareBasedCompensation	5973000
CY2014	lrcx	Payments For Proceeds From Notes Receivable PaymentsForProceedsFromNotesReceivable	-10000000
CY2014	lrcx	Gain Or Loss On Assets Related To Deferred Compensation Plan GainOrLossOnAssetsRelatedToDeferredCompensationPlan	9559000
CY2014	lrcx	Other Non Operating Income Expense Other Net OtherNonOperatingIncomeExpenseOtherNet	668000
CY2014	lrcx	Reclassifications Of Temporary Equity To Permanent Equity Convertible Notes ReclassificationsOfTemporaryEquityToPermanentEquityConvertibleNotes	3571000
CY2015	dei	Document Type DocumentType	10-K
CY2015	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	13530000	shares
CY2015	dei	Trading Symbol TradingSymbol	LRCX
CY2015	us-gaap	Reclassifications Reclassifications	<div> <p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 9pt; FONT-FAMILY: ARIAL; MARGIN-TOP: 15pt"> <font color="#2A517F"><b>Note 4: Reclassifications</b></font></p> <p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 9pt; FONT-FAMILY: ARIAL; MARGIN-TOP: 4pt"> Certain amounts in fiscal years 2014 and 2013 financial statements have been reclassified to conform to the fiscal year 2015 presentation.</p> </div>
CY2015	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	76659	shares
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0000707549
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	50.16
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-06-28
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.84
CY2015	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2015	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	715000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	174879	shares
CY2015	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	330000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	8155	shares
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--06-28
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	80.60
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	159629000	shares
CY2015	us-gaap	Fiscal Period FiscalPeriod	<div> <p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 9pt; FONT-FAMILY: ARIAL; MARGIN-TOP: 10pt"> <i>Fiscal Year:</i> The Company follows a 52/53-week fiscal reporting calendar, and its fiscal year ends on the last Sunday of June each year. The Company’s most recent fiscal years ended on June 28, 2015, June 29, 2014, and June 30, 2013 and included 52 weeks, 52 weeks, and 53 weeks, respectively.</p> </div>
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06	pure
CY2015	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.75	pure
CY2015	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	9.44
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	79.74
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	785503000
CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	2311439	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1804937	shares
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	29.32
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	31.05
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	564558	shares
CY2015	us-gaap	Guarantees Indemnifications And Warranties Policies GuaranteesIndemnificationsAndWarrantiesPolicies	<div> <p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 9pt; FONT-FAMILY: ARIAL; MARGIN-TOP: 10pt"> <i>Guarantees:</i> The Company has certain operating leases that contain provisions whereby the properties subject to the operating leases may be remarketed at lease expiration. The Company has guaranteed to the lessor an amount approximating the lessor’s investment in the property. Also, the Company’s guarantees generally include certain indemnifications to its lessors under operating lease agreements for environmental matters, potential overdraft protection obligations to financial institutions related to one of the Company’s subsidiaries, indemnifications to the Company’s customers for certain infringement of third-party intellectual property rights by its products and services, and the Company’s warranty obligations under sales of its products.</p> </div>
CY2015	dei	Entity Registrant Name EntityRegistrantName	LAM RESEARCH CORP
CY2015	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	Segment
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.11
CY2015	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	761883	shares
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y5M1D
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	us-gaap	Nature Of Operations NatureOfOperations	<div> <p style="margin-top:10pt; margin-bottom:0pt; font-size:9pt; font-family:ARIAL"> <font color="#2A517F"><b>Note 1: Company and Industry Information</b></font></p> <p style="margin-top:4pt; margin-bottom:0pt; font-size:9pt; font-family:ARIAL"> The Company designs, manufactures, markets, refurbishes and services semiconductor processing equipment used in the fabrication of integrated circuits. Semiconductor wafers are subjected to a complex series of process and preparation steps that result in the simultaneous creation of many individual integrated circuits. The Company leverages its expertise in the areas of deposition, etch, and single-wafer clean to develop processing solutions that are designed to benefit its customers through lower defect rates, enhanced yields, faster processing time, and/or reduced cost.</p> <p style="margin-top:10pt; margin-bottom:0pt; font-size:9pt; font-family:ARIAL"> The Company sells its products and services primarily to companies involved in the production of semiconductors in United States, Europe, Taiwan, Korea, Japan, China, and Southeast Asia.</p> <p style="margin-top:10pt; margin-bottom:0pt; font-size:9pt; font-family:ARIAL"> The semiconductor industry is cyclical in nature and has historically experienced periodic downturns and upturns. Today’s leading indicators of changes in customer investment patterns, such as electronics demand, memory pricing, and foundry utilization rates, may not be any more reliable than in prior years. Demand for the Company’s equipment can vary significantly from period to period as a result of various factors, including, but not limited to, economic conditions, supply, demand, and prices for semiconductors, customer capacity requirements, and the Company’s ability to develop and market competitive products. For these and other reasons, the Company’s results of operations for fiscal years 2015, 2014, and 2013 may not necessarily be indicative of future operating results.</p> </div>
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	41.17
CY2015	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	11400000
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	177067000	shares
CY2015	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.70
CY2015	us-gaap	Income Tax Holiday Income Tax Benefits Per Share IncomeTaxHolidayIncomeTaxBenefitsPerShare	0.03
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3193000	shares
CY2015	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	119119000
CY2015	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	2500000
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	788039000
CY2015	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	51.76
CY2015	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	11398000
CY2015	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	2331000
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	626436000
CY2015	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	1515000
CY2015	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1137000
CY2015	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	17523000
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	740850000
CY2015	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	135354000
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-47189000
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-21123000
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	92000
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-5318000
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	668122000
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	207462000
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	114512000
CY2015	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	1109000
CY2015	us-gaap	Sales Revenue Net SalesRevenueNet	5259312000
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	294155000
CY2015	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	4296000
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	31810000
CY2015	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-356000
CY2015	us-gaap	Investment Income Interest InvestmentIncomeInterest	19268000
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-2793000
CY2015	us-gaap	Payments Of Dividends PaymentsOfDividends	116059000
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-5389000
CY2015	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	3086808000
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-29141000
CY2015	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-290000
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-22139000
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	573240000
CY2015	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	11316000
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1595000
CY2015	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	7431000
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	40401000
CY2015	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	2800000
CY2015	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	4901000
CY2015	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	48803000
CY2015	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	198265000
CY2015	us-gaap	Interest Paid InterestPaid	26393000
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-31000
CY2015	us-gaap	Income Tax Holiday Aggregate Dollar Amount IncomeTaxHolidayAggregateDollarAmount	4800000
CY2015	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	3255000
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	72728000
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	3729000
CY2015	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-87000
CY2015	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	52496000
CY2015	us-gaap	Net Income Loss NetIncomeLoss	655577000
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-12656000
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	23660000
CY2015	us-gaap	Gross Profit GrossProfit	2284336000
CY2015	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	24416000
CY2015	us-gaap	Interest Expense InterestExpense	73682000
CY2015	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	79444000
CY2015	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	2100000
CY2015	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-871000
CY2015	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	100196000
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	17520000
CY2015	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	2137068000
CY2015	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-9017000
CY2015	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	15000000
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1376000
CY2015	us-gaap	Depreciation And Amortization DepreciationAndAmortization	277920000
CY2015	us-gaap	Operating Expenses OperatingExpenses	1496297000
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-6722000
CY2015	us-gaap	Depreciation Depreciation	120300000
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	378472000
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	157700000
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-71000
CY2015	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	1534000
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	259297000
CY2015	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	76617000
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	1827000
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1796000
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	85273000
CY2015	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	2749000
CY2015	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	35500000
CY2015	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	28910000
CY2015	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	8018000
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-8611000
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	12115000
CY2015	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0
CY2015	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	9376000
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CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	12615000
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CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5551000
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CY2015	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2974976000
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CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	992225000
CY2015	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	8594000
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	16795000
CY2015	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-175581000
CY2015	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	41212000
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	158000
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CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	135354000
CY2015	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	9800000
CY2015	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	591611000
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	1793000
CY2015	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-2855000
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	134459000
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	28845000
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	2108000
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CY2015	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	573104000
CY2015	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	825242000
CY2015	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	0
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-1106096000
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CY2015	lrcx	Investment Liquidation Period InvestmentLiquidationPeriod	P1Y
CY2015	lrcx	Deferred Income Tax Expense Benefit Share Based Compensation DeferredIncomeTaxExpenseBenefitShareBasedCompensation	11316000
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CY2015	lrcx	Defined Contribution Plan Employer Matching Percentage DefinedContributionPlanEmployerMatchingPercentage	0.50	pure
CY2015	lrcx	Share Based Compensation Arrangement By Share Based Payment Award Options And Restricted Stock Units Vesting Period Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndRestrictedStockUnitsVestingPeriodMaximum	P3Y
CY2015	lrcx	Gain Or Loss On Assets Related To Deferred Compensation Plan GainOrLossOnAssetsRelatedToDeferredCompensationPlan	9071000
CY2015	lrcx	Defined Contribution Plan Minimum Annual Contributions Per Employee Percent DefinedContributionPlanMinimumAnnualContributionsPerEmployeePercent	0.01	pure
CY2015	lrcx	Other Non Operating Income Expense Other Net OtherNonOperatingIncomeExpenseOtherNet	-4177000
CY2015	lrcx	Estimated Cash Flow Hedges Gain Loss To Be Reclassified To Earnings EstimatedCashFlowHedgesGainLossToBeReclassifiedToEarnings	-2900000
CY2015	lrcx	Reclassifications Of Temporary Equity To Permanent Equity Convertible Notes ReclassificationsOfTemporaryEquityToPermanentEquityConvertibleNotes	-58460000
CY2013	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	1940000	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	288867	shares
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	39.70
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	299079	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	168932000	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	38.76
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	719933000
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	1754273	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	2563670	shares
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	26.24
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	25.47
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1546028	shares
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.67
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	42.52
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	173430000	shares
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.66
CY2013	us-gaap	Income Tax Holiday Income Tax Benefits Per Share IncomeTaxHolidayIncomeTaxBenefitsPerShare	0.06
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	534000	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	73993	shares
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	42.59
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2558000	shares
CY2013	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	-539000
CY2013	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-6808000
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	119004000
CY2013	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	2234000
CY2013	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	9916000
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	39380000
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	66658000
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	99310000
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-51413000
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	118071000
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-818000
CY2013	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	293000
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	113050000
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-76351000
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7695000
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-3505000
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	8880000
CY2013	us-gaap	Sales Revenue Net SalesRevenueNet	3598916000
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-162634000
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	35170000
CY2013	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	181000
CY2013	us-gaap	Investment Income Interest InvestmentIncomeInterest	14737000
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	3034000
CY2013	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	1600000
CY2013	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	31265000
CY2013	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	160795000
CY2013	us-gaap	Interest Paid InterestPaid	26635000
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	2026000
CY2013	us-gaap	Income Tax Holiday Aggregate Dollar Amount IncomeTaxHolidayAggregateDollarAmount	10800000
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-46392000
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	11352000
CY2013	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-518000
CY2013	us-gaap	Net Income Loss NetIncomeLoss	113879000
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-37201000
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	17647000
CY2013	us-gaap	Gross Profit GrossProfit	1403059000
CY2013	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	42593000
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-3844000
CY2013	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1097956000
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5125000
CY2013	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	5303000
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	955661000
CY2013	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	-483000
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	10607000
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	21625000
CY2013	us-gaap	Interest Expense InterestExpense	60408000
CY2013	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2013	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	1500000
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	586000
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	39379000
CY2013	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	1039551000
CY2013	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	4215000
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	14000000
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3332000
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	304116000
CY2013	us-gaap	Operating Expenses OperatingExpenses	1284988000
CY2013	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3574000
CY2013	us-gaap	Depreciation Depreciation	126500000
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-887790000
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	177600000
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-4137000
CY2013	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	-3019000
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	23332000
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1428000
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-47221000
CY2013	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-506000
CY2013	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	25500000
CY2013	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	-61268000
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-13588000
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-60172000
CY2013	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0
CY2013	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	51422000
CY2013	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	60205000
CY2013	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	31265000
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	660000
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	11281000
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	25430000
CY2013	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	33920000
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-70155000
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-402279000
CY2013	us-gaap	Impairment Of Investments ImpairmentOfInvestments	3711000
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	7573000
CY2013	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2195857000
CY2013	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-598000
CY2013	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-58081000
CY2013	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	11538000
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1096000
CY2013	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-40255000
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-6351000
CY2013	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	17066000
CY2013	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	-539000
CY2013	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8700000
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	99330000
CY2013	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2013	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	601300000
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-494000
CY2013	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-5973000
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	20318000
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	3422000
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-1312000
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-238637000
CY2013	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	934808000
CY2013	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	683688000
CY2013	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	3700000
CY2013	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-43752000
CY2013	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	20640000
CY2013	lrcx	Deferred Income Tax Expense Benefit Share Based Compensation DeferredIncomeTaxExpenseBenefitShareBasedCompensation	-483000
CY2013	lrcx	Payments For Proceeds From Notes Receivable PaymentsForProceedsFromNotesReceivable	10000000
CY2013	lrcx	Gain Or Loss On Assets Related To Deferred Compensation Plan GainOrLossOnAssetsRelatedToDeferredCompensationPlan	9764000
CY2013	lrcx	Other Non Operating Income Expense Other Net OtherNonOperatingIncomeExpenseOtherNet	-8698000
CY2013	lrcx	Reclassifications Of Temporary Equity To Permanent Equity Convertible Notes ReclassificationsOfTemporaryEquityToPermanentEquityConvertibleNotes	3423000
CY2015Q2	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	754000	shares
CY2015Q2	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	78.80
CY2015Q2	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	79444000
CY2015Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	59416000
CY2014Q3	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	3818000	shares
CY2014Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	70.01
CY2014Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	296721000
CY2014Q4	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	869000	shares
CY2014Q4	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	77.31
CY2014Q4	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	45694000
CY2015Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1434000	shares
CY2015Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	78.45
CY2015Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	112477000

Files In Submission

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$LRCX
LAM RESEARCH CORP Stock $lrcx

2014 Q2 Form 10-K Financial Statement

#000119312515290023 Filed on August 13, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LRCX LAM RESEARCH CORP Stock $lrcx

2014 Q2 Form 10-K Financial Statement

#000119312515290023 Filed on August 13, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LRCX
LAM RESEARCH CORP Stock $lrcx