XML 68 R42.htm IDEA: XBRL DOCUMENT
v3.25.2

Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
--- | ---
Jun. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] | A summary of the carrying amount of goodwill attributable to each segment, as well as the changes in such, is as follows:
(in thousands) | Metal Cutting |  | Infrastructure |  | Total
Gross goodwill | $ | 447,212 |  |  | $ | 633,211 |  |  | $ | 1,080,423 |
Accumulated impairment losses | (177,661) |  |  | (633,211) |  |  | (810,872) |
Balance as of June 30, 2023 | $ | 269,551 |  |  | $ | — |  |  | $ | 269,551 |
Activity for the year ended June 30, 2024: |  |  |  |  |
Acquisition | 3,800 |  |  | — |  |  | 3,800 |
Change in gross goodwill due to translation | (1,784) |  |  | — |  |  | (1,784) |
Gross goodwill | 449,228 |  |  | 633,211 |  |  | 1,082,439 |
Accumulated impairment losses | (177,661) |  |  | (633,211) |  |  | (810,872) |
Balance as of June 30, 2024 | $ | 271,567 |  |  | $ | — |  |  | $ | 271,567 |
Activity for the year ended June 30, 2025: |  |  |  |  |
Change in gross goodwill due to translation | 11,159 |  |  | — |  |  | 11,159 |
Gross goodwill | 460,387 |  |  | 633,211 |  |  | 1,093,598 |
Accumulated impairment losses | (177,661) |  |  | (633,211) |  |  | (810,872) |
Balance as of June 30, 2025 | $ | 282,726 |  |  | $ | — |  |  | $ | 282,726 |
Components of Other Intangible Assets [Table Text Block] | The components of our other intangible assets were as follows:
| Estimated Useful Life (in years) |  | June 30, 2025 |  |  | June 30, 2024
(in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  |  | Gross Carrying Amount |  | Accumulated Amortization
Technology-based and other | 4 to 20 |  | $ | 32,699 |  |  | $ | (26,243) |  |  |  | $ | 31,715 |  |  | $ | (24,476) |
Customer-related | 10 to 21 |  | 159,722 |  |  | (111,184) |  |  |  | 179,529 |  |  | (120,091) |
Unpatented technology | 10 to 30 |  | 26,373 |  |  | (24,281) |  |  |  | 31,485 |  |  | (27,130) |
Trademarks | 5 to 20 |  | 23,917 |  |  | (13,793) |  |  |  | 23,044 |  |  | (12,655) |
Total |  |  | $ | 242,711 |  |  | $ | (175,501) |  |  |  | $ | 265,773 |  |  | $ | (184,352) |

X
- Definition Components of intangible assets. + References No definition available. + Details
Name: | kmt_ComponentsOfIntangibleAssetsTableTextBlock
Namespace Prefix: | kmt_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482548/350-20-55-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1A Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-2 + Details
Name: | us-gaap_ScheduleOfGoodwillTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration