Segment Data Segment Data - Sales by End Market (Details)	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
General Engineering [Member]
Revenue from External Customer [Line Items]
Revenues, percent	46.00%	47.00%	47.00%
Transportation [Member]
Revenue from External Customer [Line Items]
Revenues, percent	17.00%	16.00%	17.00%
Energy [Member]
Revenue from External Customer [Line Items]
Revenues, percent	13.00%	14.00%	13.00%
Earthworks [Member]
Revenue from External Customer [Line Items]
Revenues, percent	13.00%	14.00%	14.00%
Aerospace and defense [Member]
Revenue from External Customer [Line Items]
Revenues, percent	11.00%	9.00%	9.00%
Metal Cutting [Member] | General Engineering [Member]
Revenue from External Customer [Line Items]
Revenues, percent	54.00%	55.00%	55.00%
Metal Cutting [Member] | Transportation [Member]
Revenue from External Customer [Line Items]
Revenues, percent	27.00%	27.00%	27.00%
Metal Cutting [Member] | Energy [Member]
Revenue from External Customer [Line Items]
Revenues, percent	7.00%	7.00%	8.00%
Metal Cutting [Member] | Aerospace and defense [Member]
Revenue from External Customer [Line Items]
Revenues, percent	12.00%	11.00%	10.00%
Infrastructure [Member] | General Engineering [Member]
Revenue from External Customer [Line Items]
Revenues, percent	34.00%	34.00%	34.00%
Infrastructure [Member] | Energy [Member]
Revenue from External Customer [Line Items]
Revenues, percent	22.00%	24.00%	22.00%
Infrastructure [Member] | Earthworks [Member]
Revenue from External Customer [Line Items]
Revenues, percent	36.00%	36.00%	37.00%
Infrastructure [Member] | Aerospace and defense [Member]
Revenue from External Customer [Line Items]
Revenues, percent	8.00%	6.00%	7.00%