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Components of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Dec. 28, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Reclassification from accumulated other comprehensive income | $ 5,556 us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
Reclassified to Revenue |
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Reclassification from accumulated other comprehensive income | 4,856 us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax / us-gaap_StatementScenarioAxis = lrcx_ReclassifiedToRevenueMember
Reclassified to cost of goods sold |
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Reclassification from accumulated other comprehensive income | (1,590)us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax / us-gaap_StatementScenarioAxis = lrcx_ReclassifiedToCostOfGoodsSoldMember
Reclassified to selling, general, and administrative |
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Reclassification from accumulated other comprehensive income | $ (542)us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax / us-gaap_StatementScenarioAxis = lrcx_ReclassifiedToSellingGeneralAndAdministrativeMember

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- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss). + References No definition available. + Details
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