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EQUITY-BASED COMPENSATION PLANS - Additional Information (Details) | 3 Months Ended
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Sep. 24, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Options and restricted stock units vesting period (years) | 3 years

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- Definition The maximum vesting term over which an employee's right to exercise an award (stock option) or receive an award (RSU) is no longer contingent on satisfaction of either a service condition, market condition or a performance condition. + References No definition available. + Details
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Namespace Prefix: | lrcx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration