2.4.0.81083 - Disclosure - Purchase Commitments (Detail)truefalseIn Thousands, unless otherwise specifiedfalse1falseUSDfalsefalse$eol_PE5807----1310-K0007_STD_0_20130630_0http://www.sec.gov/CIK0000707549instant2013-06-30T00:00:000001-01-01T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true3us-gaap_UnrecordedUnconditionalPurchaseObligationLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false4us-gaap_PurchaseObligationDueInNextTwelveMonthsus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse147425000147425USD$falsetruefalsexbrli:monetaryItemTypemonetaryMinimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.No definition available.false23false4us-gaap_PurchaseObligationDueInSecondYearus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse57330005733falsefalsefalsexbrli:monetaryItemTypemonetaryMinimum amount of purchase arrangement maturing in the second fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.No definition available.false24false4us-gaap_PurchaseObligationDueInThirdYearus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse33120003312falsefalsefalsexbrli:monetaryItemTypemonetaryMinimum amount of purchase arrangement maturing in the third fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.No definition available.false25false4us-gaap_PurchaseObligationDueInFourthYearus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse10630001063falsefalsefalsexbrli:monetaryItemTypemonetaryMinimum amount of purchase arrangement maturing in the fourth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.No definition available.false26false4us-gaap_PurchaseObligationDueInFifthYearus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse10630001063falsefalsefalsexbrli:monetaryItemTypemonetaryMinimum amount of purchase arrangement maturing in the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.No definition available.false27false4us-gaap_PurchaseObligationDueAfterFifthYearus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00 falsefalsefalsexbrli:monetaryItemTypemonetaryMinimum amount of purchase arrangement maturing after the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.No definition available.false28false4us-gaap_PurchaseObligationus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse158596000158596USD$falsetruefalsexbrli:monetaryItemTypemonetaryMinimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.No definition available.true2falsePurchase Commitments (Detail) (USD $)ThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.lamresearch.com/taxonomy/role/DisclosurePurchaseCommitments18
