CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Sales	$ 487,573	$ 524,021	$ 964,713	$ 1,079,376
Cost of goods sold	339,950	383,215	673,560	787,345
Gross profit	147,623	140,806	291,153	292,031
Operating expense	111,004	123,580	230,869	252,824
Restructuring and asset impairment charges (Notes 8 and 18)	8,456	112,237	37,061	121,357
Loss on divestiture (Note 5)	0	133,307	0	133,307
Amortization of intangibles	4,150	5,638	8,421	11,886
Operating income (loss)	24,013	(233,956)	14,802	(227,343)
Interest expense	7,151	6,803	14,144	13,782
Other expense (income), net	726	(732)	844	353
Income (loss) before income taxes	16,136	(240,027)	(186)	(241,478)
Provision (benefit) for income taxes	8,221	(71,216)	13,100	(66,964)
Net income (loss)	7,915	(168,811)	(13,286)	(174,514)
Less: Net income attributable to noncontrolling interests	653	416	1,108	939
Net income (loss) attributable to Kennametal	$ 7,262	$ (169,227)	$ (14,394)	$ (175,453)
PER SHARE DATA ATTRIBUTABLE TO KENNAMETAL SHAREHOLDERS
Basic earnings (loss) per share	$ 0.09	$ (2.12)	$ (0.18)	$ (2.20)
Diluted earnings (loss) per share	0.09	(2.12)	(0.18)	(2.20)
Dividends per share	$ 0.20	$ 0.20	$ 0.40	$ 0.40
Basic weighted average shares outstanding	80,206	79,840	80,131	79,784
Diluted weighted average shares outstanding	81,026	79,840	80,131	79,784