XML 65 R53.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Debt - Senior Notes (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 19, 2014 | Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2014 | Mar. 31, 2018 | Mar. 31, 2017 | Jun. 30, 2017 | Nov. 30, 2014 | Oct. 31, 2014
Debt Instrument |  |  |  |  |  |  |  |  |
Cash dividends declared (in dollars per share) |  | $ 0.59 | $ 0.54 |  | $ 1.77 | $ 1.6 |  |  |
Unamortized discount |  | $ 2,614,000 |  |  | $ 2,614,000 |  | $ 2,901,000 |  |
Portion of senior notes | Derivatives designated as hedging instruments | Treasury lock | Senior notes | Cash flow hedge contracts |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Notional amount of derivative |  |  |  |  |  |  |  |  | $ 1,000,000,000.00
Special cash dividend |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Cash dividends declared (in dollars per share) | $ 16.50 |  |  |  |  |  |  |  |
Cash dividends |  |  |  | $ 2,760,000,000 |  |  |  |  |
Senior notes |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Face amount |  |  |  |  |  |  |  | $ 2,500,000,000.0 |
Unamortized discount |  |  |  |  |  |  |  | 4,000,000 |
Redemption price |  |  |  |  | 101.00% |  |  |  |
Fair value disclosure |  | $ 2,350,000,000 |  |  | $ 2,350,000,000 |  | $ 2,670,000,000 |  |
Senior notes | Standard & Poor's, BB plus Rating |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Decrease in credit rating, interest rate adjustment (in bps) |  |  |  |  | 25.00% |  |  |  |
Senior notes | Standard & Poor's, BB Rating |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Decrease in credit rating, interest rate adjustment (in bps) |  |  |  |  | 50.00% |  |  |  |
Senior notes | Standard & Poor's, BB- Rating |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Decrease in credit rating, interest rate adjustment (in bps) |  |  |  |  | 75.00% |  |  |  |
Senior notes | Standard & Poor's, B Plus or Below |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Decrease in credit rating, interest rate adjustment (in bps) |  |  |  |  | 100.00% |  |  |  |
Senior notes | Moody's, Ba1 Rating |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Decrease in credit rating, interest rate adjustment (in bps) |  |  |  |  | 25.00% |  |  |  |
Senior notes | Moody's, Ba2 Rating |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Decrease in credit rating, interest rate adjustment (in bps) |  |  |  |  | 50.00% |  |  |  |
Senior notes | Moody's, Ba3 Rating |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Decrease in credit rating, interest rate adjustment (in bps) |  |  |  |  | 75.00% |  |  |  |
Senior notes | Moody's, B1 Rating |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Decrease in credit rating, interest rate adjustment (in bps) |  |  |  |  | 100.00% |  |  |  |
Senior notes | 2018 Senior Notes | Derivatives Not Designated as Hedging Instruments | Treasury lock |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Face amount |  |  |  |  |  |  |  | $ 750,000,000 |

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt Instrument, Decrease in Credit Rating, Interest Rate Adjustment + References No definition available. + Details
Name: | klac_DebtInstrumentDecreaseinCreditRatingInterestRateAdjustment
Namespace Prefix: | klac_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
Name: | us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after accumulated amortization, of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_DividendsCommonStockCash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=klac_PortionofSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_TreasuryLockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=klac_SpecialCashDividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsBBPlusRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsBBRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsBBMinusRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsBPlusRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditRatingMoodysAxis=us-gaap_MoodysBa1RatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditRatingMoodysAxis=us-gaap_MoodysBa2RatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditRatingMoodysAxis=us-gaap_MoodysBa3RatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditRatingMoodysAxis=us-gaap_MoodysB1RatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=klac_SeniorNotesDueMay12018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |