| Component: (Network and Table) | |
|---|---|
| Network | 2413412 - Disclosure - Pension and Other Postretirement Benefits Pension and Other Postretirement Benefits - Allocation of Plan Assets (Details) (http://www.kennametal.com/role/PensionAndOtherPostretirementBenefitsPensionAndOtherPostretirementBenefitsAllocationOfPlanAssetsDetails) |
| Table | Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] |
| Reporting Entity [Axis] | 0000055242 (http://www.sec.gov/CIK) |
| Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] | Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] |
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | Period [Axis] | |||||
|---|---|---|---|---|---|---|
2015-07-01 - 2016-06-30 | 2015-06-30 | |||||
| Defined Benefit Plan, Asset Categories [Axis] | Defined Benefit Plan, Asset Categories [Axis] | |||||
| Equity Securities [Member] | Fixed Income Securities [Member] | Other Security Investments [Member] | Equity Securities [Member] | Fixed Income Securities [Member] | Other Security Investments [Member] | |
Defined Benefit Plan, Actual Plan Asset Allocations | ||||||
Defined Benefit Plan, Target Plan Asset Allocations | ||||||