CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Net income (loss)	$ 36,878	$ 22,985	$ 107,356	$ 22,375
Other comprehensive income (loss), net of tax [Abstract]
Unrecognized net pension and other postretirement benefit gain (loss)	1,511	2,032	4,291	(5,489)
Reclassification of net pension and other postretirement benefit loss	2,185	2,579	6,601	7,758
Foreign currency translation adjustments	(8,068)	(25,536)	(34,626)	49,012
Total other comprehensive income (loss), net of tax	(4,564)	(17,302)	(24,311)	60,343
Total comprehensive income	32,314	5,683	83,045	82,718
Less: comprehensive income (loss) attributable to noncontrolling interests	1,127	634	3,080	4,947
Comprehensive income (loss) attributable to Kennametal Shareholders	31,187	5,049	79,965	77,771
Accumulated Other Comprehensive (Loss) Income [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	63	(4,216)	189	(4,523)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	(192)	(1,148)	(577)	(210)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	0	4,771	0	9,272
Reclassification out of Accumulated Other Comprehensive Loss [Member] | Accumulated Net (Loss) Gain from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	$ 63	$ (4,216)	$ 189	$ (4,523)