CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Net income (loss)	$ 7,915	$ (168,811)	$ (13,286)	$ (174,514)
Other comprehensive loss, net of tax [Abstract]
Unrealized gain on derivatives designated and qualified as cash flow hedges	1,606	277	1,480	802
Reclassification of unrealized loss (gain) on expired derivatives designated and qualified as cash flow hedges	382	(418)	769	(2,184)
Unrecognized net pension and other postretirement benefit gain	3,471	1,450	4,101	2,449
Reclassification of net pension and other postretirement benefit loss	1,796	1,203	3,630	2,422
Foreign currency translation adjustments	(41,428)	(23,639)	(40,264)	(42,488)
Reclassification of foreign currency translation adjustment loss realized upon sale	0	17,028	0	17,028
Total other comprehensive loss, net of tax	(34,173)	(4,099)	(30,284)	(21,971)
Total comprehensive loss	(26,258)	(172,910)	(43,570)	(196,485)
Less: comprehensive (loss) income attributable to noncontrolling interests	(401)	(111)	469	(128)
Comprehensive loss attributable to Kennametal Shareholders	$ (25,857)	$ (172,799)	$ (44,039)	$ (196,357)