Segment Data Disaggregation of Revenue (Details)	3 Months Ended		9 Months Ended
Segment Data Disaggregation of Revenue (Details)	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
General Engineering [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	45.00%	46.00%	46.00%	47.00%
Transportation [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	17.00%	17.00%	16.00%	17.00%
Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	12.00%	11.00%	12.00%	10.00%
Energy [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	13.00%	13.00%	13.00%	13.00%
Earthworks [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	13.00%	13.00%	13.00%	13.00%
Americas [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	49.00%	49.00%	49.00%	49.00%
EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	31.00%	32.00%	31.00%	31.00%
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	20.00%	19.00%	20.00%	20.00%
Infrastructure [Member] \| General Engineering [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	33.00%	33.00%	33.00%	34.00%
Infrastructure [Member] \| Transportation [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	0.00%	0.00%	0.00%	0.00%
Infrastructure [Member] \| Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	10.00%	8.00%	9.00%	7.00%
Infrastructure [Member] \| Energy [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	24.00%	24.00%	23.00%	23.00%
Infrastructure [Member] \| Earthworks [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	33.00%	35.00%	35.00%	36.00%
Infrastructure [Member] \| Americas [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	57.00%	58.00%	56.00%	58.00%
Infrastructure [Member] \| EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	21.00%	20.00%	21.00%	19.00%
Infrastructure [Member] \| Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	22.00%	22.00%	23.00%	23.00%
Metal Cutting \| General Engineering [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	53.00%	54.00%	53.00%	54.00%
Metal Cutting \| Transportation [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	27.00%	26.00%	27.00%	27.00%
Metal Cutting \| Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	13.00%	13.00%	13.00%	12.00%
Metal Cutting \| Energy [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	7.00%	7.00%	7.00%	7.00%
Metal Cutting \| Earthworks [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	0.00%	0.00%	0.00%	0.00%
Metal Cutting \| Americas [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	45.00%	44.00%	45.00%	44.00%
Metal Cutting \| EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	37.00%	39.00%	36.00%	38.00%
Metal Cutting \| Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenues, percent	18.00%	17.00%	19.00%	18.00%

KENNAMETAL INC 10-Q