CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Sales	$ 542,454	$ 477,140
Cost of goods sold	357,461	333,610
Gross profit	184,993	143,530
Operating expense	119,330	119,865
Restructuring and asset impairment charges (Notes 7 and 17)	5,525	28,605
Amortization of intangibles	3,661	4,271
Operating income (loss)	56,477	(9,211)
Interest expense	7,149	6,993
Other expense, net	88	118
Income (loss) before income taxes	49,240	(16,322)
Provision for income taxes	9,602	4,879
Net income (loss)	39,638	(21,201)
Less: Net income attributable to noncontrolling interests	455	455
Net income (loss) attributable to Kennametal	$ 39,183	$ (21,656)
PER SHARE DATA ATTRIBUTABLE TO KENNAMETAL SHAREHOLDERS
Basic earnings (loss) per share	$ 0.48	$ (0.27)
Diluted earnings (loss) per share	0.48	(0.27)
Dividends per share	$ 0.20	$ 0.20
Basic weighted average shares outstanding	81,071	80,054
Diluted weighted average shares outstanding	82,123	80,054