| Cover Document | Oct. 24, 2023 |
| Document Information [Line Items] | |
| Entity Central Index Key | 0000055242 |
| Soliciting Material | false |
| Entity Incorporation, State or Country Code | PA |
| Document Type | 8-K/A |
| Document Period End Date | Oct. 24, 2023 |
| Entity Registrant Name | Kennametal Inc. |
| City Area Code | 412 |
| Local Phone Number | 248-8000 |
| Written Communications | false |
| Entity File Number | 1-5318 |
| Entity Tax Identification Number | 25-0900168 |
| Entity Address, Address Line One | 525 William Penn Place |
| Entity Address, Address Line Two | Suite 3300 |
| Entity Address, City or Town | Pittsburgh, |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 15219 |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Flag | true |
| Amendment Description | This Current Report on Form 8-K/A (the Amendment) is being filed as an amendment to the Current Report on Form 8-K filed by Kennametal Inc. (“Kennametal” or “the Company”) on October 26, 2023 (“the Original Form 8-K”). The Original Form 8-K was filed with the U.S. Securities and Exchange Commission (“SEC”) to report the results of the matters submitted to a vote of the shareholders at the Company's Annual Meeting of Shareholders, held on October 24, 2023 (“Annual Meeting”). The sole purpose of this Amendment is to update disclosures made under Item 5.07, Submission of Matters to a Vote of Security Holders, in the Original Form 8-K. Except as set forth herein, no other modifications have been made to the Original Form 8-K. |
| Capital Stock, Par Value $1.25 Per Share [Member] | NEW YORK STOCK EXCHANGE, INC. [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Capital Stock, par value $1.25 per share |
| Trading Symbol | KMT |
| Security Exchange Name | NYSE |
| Preferred Stock Purchase Rights [Member] | NEW YORK STOCK EXCHANGE, INC. [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Preferred Stock Purchase Rights |
| Security Exchange Name | NYSE |
| No Trading Symbol Flag | true |
