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Schedule of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 29, 2015 | Jun. 29, 2014
--- | --- | ---
Goodwill And Intangible Assets [Line Items] |  |  |
Gross intangible assets subject to amortization | $ 1,339,006 us-gaap_FiniteLivedIntangibleAssetsGross | $ 1,327,063 us-gaap_FiniteLivedIntangibleAssetsGross |
Total gross intangible assets | 1,348,106 us-gaap_IntangibleAssetsGrossExcludingGoodwill | 1,347,163 us-gaap_IntangibleAssetsGrossExcludingGoodwill |
Accumulated Amortization | (571,448)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (453,085)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |
Net intangible assets subject to amortization | 767,558 us-gaap_FiniteLivedIntangibleAssetsNet | 873,978 us-gaap_FiniteLivedIntangibleAssetsNet |
Intangible assets, net | 776,658 us-gaap_IntangibleAssetsNetExcludingGoodwill | 894,078 us-gaap_IntangibleAssetsNetExcludingGoodwill | [1]
Intangible assets not subject to amortization | 9,100 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill | 20,100 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill |
Customer Relationships |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Gross intangible assets subject to amortization | 615,377 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 615,618 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |
Accumulated Amortization | (218,505)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | (169,162)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |
Net intangible assets subject to amortization | 396,872 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 446,456 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |
Existing Technology |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Gross intangible assets subject to amortization | 654,385 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = lrcx_ExistingTechnologyMember | 643,922 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = lrcx_ExistingTechnologyMember |
Accumulated Amortization | (291,705)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = lrcx_ExistingTechnologyMember | (224,246)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = lrcx_ExistingTechnologyMember |
Net intangible assets subject to amortization | 362,680 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = lrcx_ExistingTechnologyMember | 419,676 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = lrcx_ExistingTechnologyMember |
Patents |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Gross intangible assets subject to amortization | 33,553 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember | 32,253 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember |
Accumulated Amortization | (25,899)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember | (24,407)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember |
Net intangible assets subject to amortization | 7,654 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember | 7,846 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember |
Other Intangible Assets |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Gross intangible assets subject to amortization | 35,691 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 35,270 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |
Accumulated Amortization | (35,339)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | (35,270)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |
Net intangible assets subject to amortization | 352 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |  |
Development Rights |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Intangible assets not subject to amortization | 9,100 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_ContractualRightsMember | 9,100 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_ContractualRightsMember |
In Process Research And Development |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Intangible assets not subject to amortization |  | $ 11,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = lrcx_InProcessResearchAndDevelopmentsMember |
[1] | Derived from audited financial statements

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