CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 150,201	$ 58,417	$ (5,047)
Unrealized gain (loss) on derivatives designated and qualified as cash flow hedges	0	9,255	(582)
Reclassification of unrealized (gain) loss on expired derivatives designated and qualified as cash flow hedges	770	401	(679)
Unrecognized net pension and other postretirement benefit (loss) gain	(4,163)	9,107	(18,299)
Reclassification of net pension and other postretirement benefit loss	8,929	10,355	7,935
Foreign currency translation adjustments	(91,185)	60,528	(35,891)
Other comprehensive (loss) income, net of tax	(87,189)	88,844	(46,158)
Total comprehensive income	63,012	147,261	(51,205)
Less: comprehensive income attributable to noncontrolling interests	(2,013)	(5,910)	1,846
Comprehensive income attributable to Kennametal Shareholders	$ 60,999	$ 141,351	$ (49,359)