Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Income Statement [Abstract]
Sales	$ 2,589,373	$ 2,736,246	$ 2,403,493
Cost of goods sold	1,744,369	1,741,996	1,519,102
Gross profit	845,004	994,250	884,391
Operating expense	527,850	561,490	538,530
Restructuring charges (Note 14)	0	0	12,586
Amortization of intangibles	20,760	16,351	11,602
Operating income	296,394	416,409	321,673
Interest expense	27,472	27,215	22,760
Other expense (income), net	2,313	(775)	2,780
Income before income taxes	266,609	389,969	296,133
Provision for income taxes	59,693	79,136	63,856
Net income	206,916	310,833	232,277
Less: Net income attributable to noncontrolling interests	3,651	3,603	2,550
Net income attributable to Kennametal	$ 203,265	$ 307,230	$ 229,727
PER SHARE DATA ATTRIBUTABLE TO KENNAMETAL SHAREOWNERS
Basic earning per share	$ 2.56	$ 3.83	$ 2.80
Diluted earning per share	$ 2.52	$ 3.77	$ 2.76
Dividends per share	$ 0.64	$ 0.54	$ 0.48
Basic weighted average shares outstanding	79,463	80,216	82,063
Diluted weighted average shares outstanding	80,612	81,439	83,173