FINANCIAL INSTRUMENTS - Schedule of Investments in Unrealized Loss Positions (Details) $ in Thousands	Mar. 26, 2023 USD ($)
Fair Value
Unrealized Losses Less than 12 Months	$ 28,472
Unrealized Losses 12 Months or Greater	61,892
Fair Value	90,364
Gross Unrealized Loss
Unrealized Losses Less than 12 Months	(1,010)
Gross Unrealized Loss	(1,968)
Gross Unrealized Loss	(2,978)
Mutual funds
Fair Value
Unrealized Losses Less than 12 Months, trading	11,634
Unrealized Losses 12 Months or Greater, trading	15,332
Trading , Fair Value	26,966
Gross Unrealized Loss
Unrealized Losses Less than 12 Months, trading	(922)
Unrealized Losses 12 Months or Greater, trading	(1,312)
Gross Unrealized Loss, trading	(2,234)
Corporate notes and bonds
Fair Value
Unrealized Losses Less than 12 Months, available for sale	16,838
Unrealized Losses 12 Months or Greater, available for sale	46,560
Available for sale, Fair Value	63,398
Gross Unrealized Loss
Unrealized Losses Less than 12 Months, available for sale	(88)
Unrealized Losses 12 Months or Greater, available for sale	(656)
Gross Unrealized Loss, available for sale	$ (744)

Available-for-sale And Trading Securities, Continuous Unrealized Loss Position, 12 Months Or Longer

No definition available.

Name:	lrcx_AvailableForSaleAndTradingSecuritiesContinuousUnrealizedLossPosition12MonthsOrLonger
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Available-for-sale And Trading Securities, Continuous Unrealized Loss Position, 12 Months Or Longer, Accumulated Loss

+ References

No definition available.

+ Details

Name:	lrcx_AvailableForSaleAndTradingSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Available-for-sale And Trading Securities, Continuous Unrealized Loss Position, Accumulated Loss

+ References

No definition available.

+ Details

Name:	lrcx_AvailableForSaleAndTradingSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Available-for-sale And Trading Securities, Continuous Unrealized Loss Position, Fair Value

+ References

No definition available.

+ Details

Name:	lrcx_AvailableForSaleAndTradingSecuritiesContinuousUnrealizedLossPositionFairValue
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Available-for-sale And Trading Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Accumulated Loss

+ References

No definition available.

+ Details

Name:	lrcx_AvailableForSaleAndTradingSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Available-for-sale And Trading Securities, Continuous Unrealized Loss Position, Less Than Twelve Months, Fair Value

+ References

No definition available.

+ Details

Name:	lrcx_AvailableForSaleAndTradingSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Trading Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss

+ References

No definition available.

+ Details

Name:	lrcx_TradingSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAccumulatedLoss
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Trading Securities, Continuous Unrealized Loss Position, Accumulated Loss

+ References

No definition available.

+ Details

Name:	lrcx_TradingSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Trading Securities, Continuous Unrealized Loss Position, Fair Value

+ References

No definition available.

+ Details

Name:	lrcx_TradingSecuritiesContinuousUnrealizedLossPositionFairValue
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Trading Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss

+ References

No definition available.

+ Details

Name:	lrcx_TradingSecuritiesContinuousUnrealizedLossPositionLessthan12MonthsAccumulatedLoss
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Trading Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value

+ References

No definition available.

+ Details

Name:	lrcx_TradingSecuritiesContinuousUnrealizedLossPositionLessthanTwelveMonthsFairValue
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Trading Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value

+ References

No definition available.

+ Details

Name:	lrcx_TradingSecuritiesContinuousUnrealizedLossPositionTwelveMonthsorLongerFairValue
Namespace Prefix:	lrcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_AvailableForSaleSecuritiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 55
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 55
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 55
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_MutualFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: