CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Sales (Note 3)	$ 587,394	$ 571,345	$ 1,174,080	$ 1,113,799
Cost of goods sold	388,796	381,844	764,389	742,348
Gross profit	198,598	189,501	409,691	371,451
Operating expense	114,635	122,138	237,920	242,731
Restructuring and asset impairment charges (Note 7)	1,545	45	2,620	5,570
Amortization of intangibles	3,560	3,677	7,141	7,338
Operating income	78,858	63,641	162,010	115,812
Interest expense	8,104	7,231	16,201	14,379
Other income, net	(4,022)	(3,220)	(6,782)	(7,437)
Income before income taxes	74,776	59,630	152,591	108,870
Provision for income taxes	18,529	17,472	37,921	27,074
Net income	56,247	42,158	114,670	81,796
Less: Net income attributable to noncontrolling interests	1,549	557	3,274	1,011
Net income attributable to Kennametal	$ 54,698	$ 41,601	$ 111,396	$ 80,785
PER SHARE DATA ATTRIBUTABLE TO KENNAMETAL SHAREHOLDERS
Basic earnings per share	$ 0.66	$ 0.51	$ 1.35	$ 0.99
Diluted earnings per share	0.66	0.50	1.34	0.98
Dividends per share	$ 0.20	$ 0.20	$ 0.40	$ 0.40
Basic weighted average shares outstanding	82,331	81,477	82,218	81,274
Diluted weighted average shares outstanding	83,310	82,778	83,233	82,446