Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Condensed Consolidated Statements of Income [Abstract]
Sales	$ 658,877	$ 529,158
Cost of goods sold	407,817	340,418
Gross profit	251,060	188,740
Operating expense	145,989	125,020
Restructuring charges (Notes 7)		3,260
Amortization of intangibles	3,461	2,948
Operating income	101,610	57,512
Interest expense	5,487	5,963
Other expense, net	574	1,911
Income from continuing operations before income taxes	95,549	49,638
Provision for income taxes	21,976	13,682
Net income	73,573	35,956
Less: Net income attributable to noncontrolling interests	1,587	1,035
Net income attributable to Kennametal	$ 71,986	$ 34,921
Earnings Per Share [Abstract]
Basic earning per share	$ 0.89	$ 0.43
Diluted earning per share:	$ 0.88	$ 0.42
Dividends per share	$ 0.12	$ 0.12
Basic weighted average shares outstanding	80,659	82,105
Diluted weighted average shares outstanding	81,808	82,689