Quarterly report pursuant to Section 13 or 15(d)

Equity and Long-Term Incentive Compensation Plans (Equity Incentive Program) (Details)

v2.4.1.9
Equity and Long-Term Incentive Compensation Plans (Equity Incentive Program) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 6 Months Ended
Dec. 31, 2014
plan
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of plans 2klac_SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofPlans  
Shares available for issuance 7,698,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant [1]  
Total Shares Available for Grant under the Company's equity incentive plans:    
Balances as of June 30, 2014 8,804,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant  
Options granted/canceled/expired/forfeited 10,000klac_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsGrantsForfeituresandExpirationsinPeriod  
Plan shares expired (10,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod [2]  
Balances as of December 31, 2014 7,698,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant [1]  
Adjustments in period 4,245klac_SharebasedCompensationArrangementbySharebasedPaymentAwardAdjustmentsinPeriod  
Dividends payable - financing activities $ 42,987us-gaap_DividendsPayableCurrentAndNoncurrent $ 0us-gaap_DividendsPayableCurrentAndNoncurrent
2004 Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares available for issuance 6,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= klac_TwoThousandFourPlanMember 		 
Total Shares Available for Grant under the Company's equity incentive plans:    
Balances as of December 31, 2014 6,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= klac_TwoThousandFourPlanMember 		 
Share Reserve Multiplier    
Total Shares Available for Grant under the Company's equity incentive plans:    
Restricted stock units granted (1,183,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_PlanNameAxis
= klac_ShareReserveMultiplierMember 		[3],[4]  
Restricted stock units canceled 77,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_PlanNameAxis
= klac_ShareReserveMultiplierMember 		[3]  
Outside Director Option Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares available for issuance 1,700,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= klac_OutsideDirectorOptionPlansMember 		 
Total Shares Available for Grant under the Company's equity incentive plans:    
Balances as of December 31, 2014 1,700,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= klac_OutsideDirectorOptionPlansMember 		 
Restricted Stock Unit, Performance-Based And Service-Based    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares available for issuance 600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= klac_RestrictedStockUnitPerformanceBasedAndServiceBasedMember 		 
Total Shares Available for Grant under the Company's equity incentive plans:    
Balances as of December 31, 2014 600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= klac_RestrictedStockUnitPerformanceBasedAndServiceBasedMember 		 
Restricted Stock Unit, Performance-Based And Service-Based | Special Cash Dividend    
Total Shares Available for Grant under the Company's equity incentive plans:    
Dividends payable - financing activities $ 43,000us-gaap_DividendsPayableCurrentAndNoncurrent
/ us-gaap_AwardTypeAxis
= klac_RestrictedStockUnitPerformanceBasedAndServiceBasedMember
/ us-gaap_DividendsAxis
= klac_SpecialCashDividendMember 		 
Stop Options | Minimum    
Total Shares Available for Grant under the Company's equity incentive plans:    
Stock options, vesting period 1 year  
Stop Options | Maximum    
Total Shares Available for Grant under the Company's equity incentive plans:    
Stock options, vesting period 5 years  
Awards Granted Before November 6, 2013 | 2004 Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
2004 Plan shares reserve multiplier 1.8klac_ImpactOnShareReserveMultiplier
/ us-gaap_AwardDateAxis
= klac_AwardsGrantedBeforeNovember62013Member
/ us-gaap_PlanNameAxis
= klac_TwoThousandFourPlanMember 		 
Awards Granted After November 6, 2013 | 2004 Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
2004 Plan shares reserve multiplier 2.0klac_ImpactOnShareReserveMultiplier
/ us-gaap_AwardDateAxis
= klac_AwardsGrantedAfterNovember62013Member
/ us-gaap_PlanNameAxis
= klac_TwoThousandFourPlanMember 		 
[1] During the three months ended December 31, 2014, the Company adjusted the number of shares subject to outstanding options under the 2004 Plan by an aggregate of 4,245 shares pursuant to a proportionate and equitable adjustment for the effect of the special cash dividend, as required by the 2004 Plan. The total number of outstanding options under the 2004 Plan as well as the associated exercise prices were adjusted to ensure the aggregate intrinsic value remained the same after considering the effect of the special cash dividend. As the adjustment was required by the 2004 Plan, the adjustment to the outstanding awards did not result in any incremental compensation expense due to modification of such awards, under the authoritative guidance. Additionally, the adjustment did not have an impact on the shares available for future issuance under the 2004 Plan.
[2] Represents the portion of shares listed as “Options canceled/expired/forfeited” above that were issued under the Company’s equity incentive plans other than the 2004 Plan and the Outside Director Plan. Because the Company is only currently authorized to issue equity awards under the 2004 Plan and the Outside Director Plan, any equity awards that are canceled, expired or forfeited under any other Company equity incentive plan do not result in additional shares being available to the Company for future grant.
[3] The number of restricted stock units provided in this row reflects the application of the award multiplier as described above (1.8x or 2.0x depending on the grant date of the applicable award).
[4] Includes restricted stock units granted to senior management during the six months ended December 31, 2014 with performance-based vesting criteria (in addition to service-based vesting criteria for any of such restricted stock units that are deemed to have been earned). As of December 31, 2014, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria of such restricted stock units had been satisfied. Therefore, this line item includes all such performance-based restricted stock units granted during the six months ended December 31, 2014, reported at the maximum possible number of shares that may ultimately be issuable under such restricted stock units if all applicable performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied (i.e., 0.6 million shares for the six months ended December 31, 2014 after the application of 2.0x multiplier described above). The Company has granted only restricted stock units under its equity incentive program since October 2007, except the number of shares subject to outstanding options under the 2004 Plan were adjusted during the three months ended December 31, 2014 due to a proportionate and equitable adjustment under the 2004 Plan provisions as discussed below. For the preceding several years until October 31, 2007, stock options were granted at the market price of the Company’s common stock on the date of grant generally with vesting period term ranging from one to five years. Restricted stock units may be granted with varying criteria such as service-based and/or performance-based vesting.