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

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.

No definition available.

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Namespace Prefix:	lrcx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration