CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Net income (loss)	$ 39,638	$ (21,201)
Other comprehensive income, net of tax [Abstract]
Unrealized loss on derivatives designated and qualified as cash flow hedges	(619)	(126)
Reclassification of unrealized loss on expired derivatives designated and qualified as cash flow hedges	396	387
Unrecognized net pension and other postretirement (loss) gain	(1,965)	630
Reclassification of net pension and other postretirement benefit loss	1,779	1,834
Foreign currency translation adjustments	19,868	1,164
Total other comprehensive income, net of tax	19,459	3,889
Total comprehensive income (loss)	59,097	(17,312)
Less: comprehensive income attributable to noncontrolling interests	739	870
Comprehensive income (loss) attributable to Kennametal Shareholders	$ 58,358	$ (18,182)