CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Net income	$ 70,128	$ 53,111	$ 184,798	$ 134,907
Other comprehensive income (loss), net of tax [Abstract]
Unrealized gain (loss) on derivatives designated and qualified as cash flow hedges	232	(783)	141	(1,688)
Reclassification of unrealized loss on derivatives designated and qualified as cash flow hedges	695	898	1,552	2,301
Unrecognized net pension and other postretirement benefit gain (loss)	51	(1,749)	1,246	(4,339)
Reclassification of net pension and other postretirement benefit loss	1,287	1,344	3,893	4,692
Foreign currency translation adjustments	(1,239)	20,282	(20,845)	54,075
Total other comprehensive income (loss), net of tax	1,026	19,992	(14,013)	55,041
Total comprehensive income	71,154	73,103	170,785	189,948
Less: comprehensive income attributable to noncontrolling interests	1,612	2,515	4,154	4,699
Comprehensive income attributable to Kennametal Shareholders	$ 69,542	$ 70,588	$ 166,631	$ 185,249