Equity and Long-Term Incentive Compensation Plans (Cash Dividends) (Details) (USD $)
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3 Months Ended |
6 Months Ended |
0 Months Ended |
1 Months Ended |
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Nov. 06, 2014
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Nov. 19, 2014
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Nov. 30, 2014
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Jun. 30, 2014
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Dividends Payable [Line Items] |
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Cash dividends declared per share (in dollars per share) |
$ 17us-gaap_CommonStockDividendsPerShareDeclared
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$ 0.45us-gaap_CommonStockDividendsPerShareDeclared
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$ 17.5us-gaap_CommonStockDividendsPerShareDeclared
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$ 0.9us-gaap_CommonStockDividendsPerShareDeclared
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Payment of dividends |
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$ 2,879,152,000us-gaap_PaymentsOfDividends
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$ 149,600,000us-gaap_PaymentsOfDividends
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Retained earnings |
24,770,000us-gaap_RetainedEarningsAccumulatedDeficit
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24,770,000us-gaap_RetainedEarningsAccumulatedDeficit
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2,479,113,000us-gaap_RetainedEarningsAccumulatedDeficit
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Dividends payable - financing activities |
42,987,000us-gaap_DividendsPayableCurrentAndNoncurrent
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0us-gaap_DividendsPayableCurrentAndNoncurrent
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42,987,000us-gaap_DividendsPayableCurrentAndNoncurrent
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0us-gaap_DividendsPayableCurrentAndNoncurrent
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Regular Cash Dividend |
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Dividends Payable [Line Items] |
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Cash dividends declared per share (in dollars per share) |
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$ 0.50us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_DividendsAxis = klac_RegularCashDividendMember
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Payment of dividends |
82,300,000us-gaap_PaymentsOfDividends / us-gaap_DividendsAxis = klac_RegularCashDividendMember
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75,000,000us-gaap_PaymentsOfDividends / us-gaap_DividendsAxis = klac_RegularCashDividendMember
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164,700,000us-gaap_PaymentsOfDividends / us-gaap_DividendsAxis = klac_RegularCashDividendMember
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149,600,000us-gaap_PaymentsOfDividends / us-gaap_DividendsAxis = klac_RegularCashDividendMember
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Special Cash Dividend |
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Dividends Payable [Line Items] |
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Cash dividends declared per share (in dollars per share) |
$ 16.50us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_DividendsAxis = klac_SpecialCashDividendMember
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$ 0us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_DividendsAxis = klac_SpecialCashDividendMember
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$ 0us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_DividendsAxis = klac_SpecialCashDividendMember
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$ 16.50us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_DividendsAxis = klac_SpecialCashDividendMember
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$ 16.50us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_DividendsAxis = klac_SpecialCashDividendMember
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Total amount of dividends accrued |
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2,760,000,000us-gaap_DividendsCommonStockCash / us-gaap_DividendsAxis = klac_SpecialCashDividendMember
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Retained earnings |
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0us-gaap_RetainedEarningsAccumulatedDeficit / us-gaap_DividendsAxis = klac_SpecialCashDividendMember
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Special Cash Dividend | Restricted Stock Unit, Performance-Based And Service-Based |
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Dividends Payable [Line Items] |
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Dividends payable - financing activities |
43,000,000us-gaap_DividendsPayableCurrentAndNoncurrent / us-gaap_AwardTypeAxis = klac_RestrictedStockUnitPerformanceBasedAndServiceBasedMember / us-gaap_DividendsAxis = klac_SpecialCashDividendMember
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43,000,000us-gaap_DividendsPayableCurrentAndNoncurrent / us-gaap_AwardTypeAxis = klac_RestrictedStockUnitPerformanceBasedAndServiceBasedMember / us-gaap_DividendsAxis = klac_SpecialCashDividendMember
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Special Cash Dividend | Retained Earnings |
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Dividends Payable [Line Items] |
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Total amount of dividends accrued |
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2,100,000,000us-gaap_DividendsCommonStockCash / us-gaap_DividendsAxis = klac_SpecialCashDividendMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
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Special Cash Dividend | Additional Paid-in Capital |
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Dividends Payable [Line Items] |
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Total amount of dividends accrued |
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$ 646,500,000us-gaap_DividendsCommonStockCash / us-gaap_DividendsAxis = klac_SpecialCashDividendMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
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