CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Sales	$ 1,966,845	$ 2,046,899	$ 2,078,184
Cost of goods sold	1,368,775	1,419,806	1,431,745
Gross profit	598,070	627,093	646,439
Operating expense	430,835	433,161	437,292
Restructuring and other charges, net (Note 16)	11,813	12,152	4,106
Gain on divestiture (Note 4)	1,512	0	0
Amortization of intangibles	10,787	11,557	12,624
Operating income	143,123	170,223	192,417
Interest expense	24,930	26,472	28,496
Other expense (income), net	(13,811)	(699)	4,300
Income before income taxes	132,004	144,450	159,621
Provision for income taxes (Note 13)	33,296	30,809	36,255
Net income	98,708	113,641	123,366
Less: Net income attributable to noncontrolling interests	5,583	4,318	4,907
Net income attributable to Kennametal	$ 93,125	$ 109,323	$ 118,459
PER SHARE DATA ATTRIBUTABLE TO KENNAMETAL SHAREHOLDERS
Basic earnings per share	$ 1.21	$ 1.38	$ 1.47
Diluted earnings per share	$ 1.20	$ 1.37	$ 1.46
Basic weighted average shares outstanding	77,264	79,390	80,803
Diluted weighted average shares outstanding	77,894	79,965	81,402