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v2.4.1.9

Components of Notes (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 28, 2014 | Jun. 29, 2014 | Jun. 24, 2012 | May 31, 2011
2.625% Notes due 2041 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Carrying value, current portion | $ 518,430 us-gaap_LongTermDebtCurrent / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] | $ 516,586 us-gaap_LongTermDebtCurrent / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] |  |
Unamortized discount | 181,505 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] | 183,349 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] |  |
Principal amount | 699,935 us-gaap_DebtInstrumentFaceAmount / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] | 699,935 us-gaap_DebtInstrumentFaceAmount / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] | 700,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember |
Remaining amortization period (years) | 26 years 4 months 24 days | [1] |  |  |  |
Effective interest rate on liability component | 4.28%lrcx_DiscountRateUsedToDetermineLiabilityFairValue / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] |  |  |  |
Carrying amount of equity component, net of tax | 328,109 us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] |  |  |  |
Fair Value of Notes (Level 1) | 1,637,848 us-gaap_ConvertibleDebtFairValueDisclosures / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] |  |  |  |
Conversion rate (shares of common stock per $1,000 principal amount of notes) | 28.6901 us-gaap_DebtInstrumentConvertibleConversionRatio1 / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] |  |  |  |
Conversion price (per share of common stock) | $ 34.86 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] |  |  |  |
If-converted value in excess of par value | 925,839 us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal / us-gaap_ShortTermDebtTypeAxis = lrcx_TwoPointSixTwoFivePercentConvertibleSeniorNotesDueTwoThousandFortyOneMember | [1] |  |  |  |
0.50% Notes due 2016 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Carrying value, long-term | 427,443 us-gaap_LongTermDebtNoncurrent / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  | 419,561 us-gaap_LongTermDebtNoncurrent / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  |  |
Unamortized discount | 22,557 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  | 30,439 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  |  |
Principal amount | 450,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  | 450,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  |  | 450,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember
Remaining amortization period (years) | 1 year 4 months 24 days |  |  |  |  |
Effective interest rate on liability component | 4.29%lrcx_DiscountRateUsedToDetermineLiabilityFairValue / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  |  |  |  |
Carrying amount of equity component, net of tax | 76,230 us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  |  |  |  |
Fair Value of Notes (Level 1) | 596,250 us-gaap_ConvertibleDebtFairValueDisclosures / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  |  |  |  |
Conversion rate (shares of common stock per $1,000 principal amount of notes) | 15.9868 us-gaap_DebtInstrumentConvertibleConversionRatio1 / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  |  |  |  |
Conversion price (per share of common stock) | $ 62.55 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  |  |  |  |
If-converted value in excess of par value | 132,431 us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal / us-gaap_ShortTermDebtTypeAxis = lrcx_ZeroPointFiveZeroPercentConvertibleSeniorNotesDueTwoThousandSixteenMember |  |  |  |  |
1.25% Notes due 2018 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Carrying value, long-term | 394,732 us-gaap_LongTermDebtNoncurrent / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  | 387,338 us-gaap_LongTermDebtNoncurrent / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  |  |
Unamortized discount | 55,268 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  | 62,662 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  |  |
Principal amount | 450,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  | 450,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  |  | 450,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember
Remaining amortization period (years) | 3 years 4 months 24 days |  |  |  |  |
Effective interest rate on liability component | 5.27%lrcx_DiscountRateUsedToDetermineLiabilityFairValue / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  |  |  |  |
Carrying amount of equity component, net of tax | 104,895 us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  |  |  |  |
Fair Value of Notes (Level 1) | 645,188 us-gaap_ConvertibleDebtFairValueDisclosures / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  |  |  |  |
Conversion rate (shares of common stock per $1,000 principal amount of notes) | 15.9868 us-gaap_DebtInstrumentConvertibleConversionRatio1 / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  |  |  |  |
Conversion price (per share of common stock) | $ 62.55 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  |  |  |  |
If-converted value in excess of par value | $ 132,431 us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal / us-gaap_ShortTermDebtTypeAxis = lrcx_OnePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandEighteenMember |  |  |  |  |
[1] | During the quarter-ended December 28, 2014 and June 29, 2014 the market value of the Common Stock was greater than or equal to 130% of the 2041 Note conversion price for 20 or more trading days of the 30 consecutive trading days preceding the quarter end. As a result, the 2041 Notes are convertible at the option of the holder. The carrying amount of the 2041 Notes was classified in current liabilities and the excess of the amount of cash payable, if converted, over the carrying amount of the 2041 Notes was classified as temporary equity in the Company's Consolidated Balance Sheets as of December 28, 2014 and June 29, 2014. Upon closure of a conversion period, all 2041 Notes not converted will be reclassified back to noncurrent liabilities and the temporary equity is reclassified to permanent equity.

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- Definition Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Convertible Security -URI http://asc.fasb.org/extlink&oid=6509036 + Details
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