XML 40 R30.htm IDEA: XBRL DOCUMENT
v3.25.3

Derivative Instruments and Hedging Activities (Tables) | 3 Months Ended
--- | ---
Sep. 30, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of fair value of derivatives | The fair value of derivatives designated and not designated as hedging instruments in the condensed consolidated balance sheets are as follows:
(in thousands) | September 30, 2025 |  | June 30, 2025
Derivatives designated as hedging instruments |  |  |
Other current assets - range forward contracts | $ | 11 |  |  | $ | — |
Other current liabilities - range forward contracts | — |  |  | (9) |
Total derivatives designated as hedging instruments | 11 |  |  | (9) |
Derivatives not designated as hedging instruments |  |  |
Other current assets - currency forward contracts | $ | 45 |  |  | $ | 88 |
Other current liabilities - currency forward contracts | (20) |  |  | (72) |
Total derivatives not designated as hedging instruments | 25 |  |  | 16 |
Total derivatives | $ | 36 |  |  | $ | 7 |
Schedule of (gains) losses related to derivatives not designated as hedging instruments | These contracts are recorded at fair value in the condensed consolidated balance sheets, with the offset to other income, net. Losses (gains) related to derivatives not designated as hedging instruments have been recognized as follows:
| Three Months Ended September 30, |  |
(in thousands) | 2025 |  | 2024 |  |  |  |
Other expense (income), net - currency forward contracts | $ | 3 |  |  | $ | (14) |  |  |  |  |
Schedule of cash flow hedges | The following represents losses, net of tax, related to cash flow hedges:
| Three Months Ended September 30, |  |
(in thousands) | 2025 |  | 2024 |  |  |  |
Unrealized loss recognized in other comprehensive income | $ | (8) |  |  | $ | (84) |  |  |  |  |
No portion of the gains or losses recognized in earnings was due to ineffectiveness and no amounts were excluded from our effectiveness testing for the three months ended September 30, 2025 and 2024.
Schedule of foreign currency-denominated intercompany loans payable designated as net investment hedges | As of September 30, 2025, the foreign currency-denominated intercompany loans payable designated as net investment hedges consisted of:
Instrument | Notional (CNY and EUR in thousands)(2) | Notional (USD in thousands)(2) | Maturity
Foreign currency-denominated intercompany loan payable | ¥ | 82,931 |  | $ | 11,649 |  | March 2026
Foreign currency-denominated intercompany loan payable | € | 10,011 |  | $ | 11,751 |  | June 2026
Foreign currency-denominated intercompany loan payable | ¥ | 85,695 |  | $ | 12,038 |  | August 2026
(2) Includes principal and accrued interest.

X
- Definition Schedule of Cash Hedges + References No definition available. + Details
Name: | kmt_ScheduleOfCashHedgesTableTextBlock
Namespace Prefix: | kmt_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 182 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-182 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B + Details
Name: | us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for net investment hedges of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B + Details
Name: | us-gaap_ScheduleOfNetInvestmentHedgesStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of derivative instrument not designated or qualifying as hedging instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4CC -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B + Details
Name: | us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration