Acquisition - Unaudited Pro Forma Financial Information (Details) - TMB [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Jun. 30, 2014	Jun. 30, 2013
Pro forma operating results
Net Sales	$ 2,941,005	$ 2,902,160
Net income attributable to Kennametal	$ 175,804	$ 190,863
Per share data attributable to Kennametal Shareholders:
Basic earnings per share	$ 2.23	$ 2.40
Diluted earnings per share	$ 2.21	$ 2.37

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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