CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 123,366	$ 150,201	$ 58,417
Unrealized gain on derivatives designated and qualified as cash flow hedges	0	0	9,255
Reclassification of unrealized gain on expired derivatives designated and qualified as cash flow hedges	770	770	401
Unrecognized net pension and other postretirement benefit plans (loss) gain	(10,402)	(4,163)	9,107
Reclassification of net pension and other postretirement benefit plans loss	3,373	8,929	10,355
Foreign currency translation adjustments	6,815	(91,185)	60,528
Total other comprehensive (loss) income, net of tax	(984)	(87,189)	88,844
Total comprehensive income	122,382	63,012	147,261
Less: comprehensive income attributable to noncontrolling interests	(4,315)	(2,013)	(5,910)
Comprehensive income attributable to Kennametal Shareholders	$ 118,067	$ 60,999	$ 141,351