XML 61 R50.htm IDEA: XBRL DOCUMENT
v3.23.1

MARKETABLE SECURITIES - Amortized Cost and Fair Value (Details) $ in Thousands | Mar. 31, 2023 USD ($) investment | Jun. 30, 2022 USD ($)
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale securities, fair value | $ 1,321,696 |
Money market funds and other | 1,080,003 | $ 948,027
Equity securities, amortized cost | 3,211 | 3,211
Equity securities, gross unrealized gains | 16,628 | 7,824
Equity securities, gross unrealized losses | 0 | 0
Equity securities, fair value | 19,839 | 11,035
Subtotal, amortized cost | 2,141,341 | 1,972,277
Subtotal, gross unrealized gains | 17,694 | 7,873
Subtotal, gross unrealized losses | (14,995) | (19,778)
Subtotal, fair value | 2,144,040 | 1,960,372
Add: Time deposits | 430,719 | 274,873
Cash equivalents, amortized cost | 1,253,063 | 1,112,146
Cash equivalents, gross unrealized gains | 0 | 0
Cash equivalents, gross unrealized losses | 0 | (1)
Cash equivalents, fair value | 1,253,063 | 1,112,145
Marketable securities, amortized cost | 1,318,997 | 1,135,004
Marketable securities, gross unrealized gains | 17,694 | 7,873
Marketable securities, gross unrealized losses | (14,995) | (19,777)
Marketable securities, fair value | $ 1,321,696 | 1,123,100
Number of investments in an unrealized loss position | investment | 440 |
Corporate debt securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 466,754 | 481,881
Available-for-sale securities, gross unrealized gains | 473 | 3
Available-for-sale securities, gross unrealized losses | (6,022) | (8,915)
Available-for-sale securities, fair value | 461,205 | 472,969
Municipal securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 36,660 | 61,973
Available-for-sale securities, gross unrealized gains | 0 | 0
Available-for-sale securities, gross unrealized losses | (776) | (1,249)
Available-for-sale securities, fair value | 35,884 | 60,724
Sovereign securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 5,021 | 6,041
Available-for-sale securities, gross unrealized gains | 0 | 2
Available-for-sale securities, gross unrealized losses | (5) | (53)
Available-for-sale securities, fair value | 5,016 | 5,990
U.S. Government agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 118,073 | 92,273
Available-for-sale securities, gross unrealized gains | 127 | 26
Available-for-sale securities, gross unrealized losses | (830) | (1,183)
Available-for-sale securities, fair value | 117,370 | 91,116
U.S. Treasury securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 431,619 | 378,871
Available-for-sale securities, gross unrealized gains | 466 | 18
Available-for-sale securities, gross unrealized losses | (7,362) | (8,378)
Available-for-sale securities, fair value | $ 424,723 | $ 370,511
Corporate and Government securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investment portfolio, maximum maturity term | 3 years |

X
- Definition Cash Equivalents, Fair Value Disclosure + References No definition available. + Details
Name: | klac_CashEquivalentsFairValueDisclosure
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cash Equivalents Gross Unrealized Gains + References No definition available. + Details
Name: | klac_CashEquivalentsGrossUnrealizedGains
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Cash Equivalents Gross Unrealized Losses + References No definition available. + Details
Name: | klac_CashEquivalentsGrossUnrealizedLosses
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Securities, Available-For-Sale, And Equity Securities, Accumulated Gross Unrealized Gain + References No definition available. + Details
Name: | klac_DebtSecuritiesAvailableForSaleAndEquitySecuritiesAccumulatedGrossUnrealizedGain
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Securities, Available-For-Sale, And Equity Securities, Accumulated Gross Unrealized Loss + References No definition available. + Details
Name: | klac_DebtSecuritiesAvailableForSaleAndEquitySecuritiesAccumulatedGrossUnrealizedLoss
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Securities, Available-For-Sale, And Equity Securities, Amortized Cost + References No definition available. + Details
Name: | klac_DebtSecuritiesAvailableForSaleAndEquitySecuritiesAmortizedCost
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Securities, Available-For-Sale, And Equity Securities, Fair Value + References No definition available. + Details
Name: | klac_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFairValue
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Equity Securities, FV-NI, Accumulated Gross Unrealized Gain + References No definition available. + Details
Name: | klac_EquitySecuritiesFVNIAccumulatedGrossUnrealizedGain
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Equity Securities, FV-NI, Accumulated Gross Unrealized Loss + References No definition available. + Details
Name: | klac_EquitySecuritiesFVNIAccumulatedGrossUnrealizedLoss
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Marketable Securities, Excluding Time Deposit, Gross Unrealized Gains + References No definition available. + Details
Name: | klac_MarketableSecuritiesExcludingTimeDepositGrossUnrealizedGains
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Marketable Securities, Excluding Time Deposits, Amortized Cost + References No definition available. + Details
Name: | klac_MarketableSecuritiesExcludingTimeDepositsAmortizedCost
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Marketable Securities, Excluding Time Deposits, Fair Value + References No definition available. + Details
Name: | klac_MarketableSecuritiesExcludingTimeDepositsFairValue
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Marketable Securities, Excluding Time Deposits, Gross Unrealized Losses + References No definition available. + Details
Name: | klac_MarketableSecuritiesExcludingTimeDepositsGrossUnrealizedLosses
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Money Market Funds And Other + References No definition available. + Details
Name: | klac_MoneyMarketFundsAndOther
Namespace Prefix: | klac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Period between issuance and maturity of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of investments in debt securities 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -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 (b)(3) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value. + References No definition available. + Details
Name: | us-gaap_EquitySecuritiesFvNiCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI https://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section 45 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126970686&loc=d3e59706-112781 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.2) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
Name: | us-gaap_InterestBearingDepositsInBanks
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_SovereignDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=klac_CorporateAndGovernmentSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |