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Financial Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2015	Jun. 30, 2014
Fair Value [Line Items]
Debt Instrument, Fair Value Disclosure	$ 698.0	$ 705.3
Contracts Translated to U S Dollars [Member]
Fair Value [Line Items]
Notional Amount of Foreign Exchange Contracts	53.8	91.1
Estimated Amount Of Receivable On Settlement Of Foreign Exchange Contracts	2.6	0.2
Foreign Exchange Contract [Member]
Fair Value [Line Items]
Notional Amount of Foreign Exchange Contracts	$ 53.8	$ 91.1

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Article 12



-Section 13



-Sentence Column B

+ Details

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Balance Type:	na
Period Type:	instant

X

- Definition

Estimated Amount Of Receivable On Settlement Of Interest Rate Swap Contracts

+ References

No definition available.

+ Details

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Namespace Prefix:	kmt_
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X

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 825



-SubTopic 10



-Section 50



-Paragraph 10



-Subparagraph (a)



-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 825



-SubTopic 10



-Section 50



-Paragraph 12



-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13476-108611

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Details

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