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Segment Data - Geographic Sales Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
External Sales and Long-Lived Assets [Line Items]
Assets held for sale (Note 15)											$ 7,000
Number of countries in Other	27								27
Sales from Other country did not exceed									2.00%
Property, Plant and Equipment, Net	$ 934,895				$ 824,213				$ 934,895	$ 824,213	744,388
External Sales [Abstract]
Revenues	603,949	$ 597,204	$ 587,394	$ 586,687	646,119	$ 607,936	$ 571,345	$ 542,454	2,375,234	2,367,853	2,058,368
Total Long-Lived Assets [Abstract]
Long-Lived Assets	934,895				824,213				$ 934,895	$ 824,213	$ 751,368
Americas [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									50.00%	49.00%	49.00%
UNITED STATES
External Sales [Abstract]
Revenues									$ 1,014,189	$ 970,003	$ 868,466
Total Long-Lived Assets [Abstract]
Long-Lived Assets	525,713				456,678				525,713	456,678	423,543
GERMANY
External Sales [Abstract]
Revenues									314,035	331,893	282,347
Total Long-Lived Assets [Abstract]
Long-Lived Assets	201,714				188,673				201,714	188,673	157,323
CHINA
External Sales [Abstract]
Revenues									247,858	271,343	220,561
Total Long-Lived Assets [Abstract]
Long-Lived Assets	78,410				67,462				78,410	67,462	60,908
INDIA
External Sales [Abstract]
Revenues									113,287	102,120	84,769
Total Long-Lived Assets [Abstract]
Long-Lived Assets	44,643				31,984				44,643	31,984	28,569
ITALY
External Sales [Abstract]
Revenues									68,585	69,049	59,967
CANADA
External Sales [Abstract]
Revenues									108,261	102,139	85,488
Total Long-Lived Assets [Abstract]
Long-Lived Assets	20,435				19,396				20,435	19,396	19,576
FRANCE
External Sales [Abstract]
Revenues									59,899	62,982	56,231
UNITED KINGDOM
External Sales [Abstract]
Revenues									44,384	45,714	39,731
ISRAEL
Total Long-Lived Assets [Abstract]
Long-Lived Assets	24,042				25,831				24,042	25,831	26,627
Other
External Sales [Abstract]
Revenues									404,736	412,610	360,808
Total Long-Lived Assets [Abstract]
Long-Lived Assets	$ 39,938				$ 34,189				$ 39,938	$ 34,189	$ 34,822
EMEA [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									30.00%	31.00%	31.00%
Asia Pacific [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									20.00%	20.00%	20.00%
Industrial [Member]
External Sales [Abstract]
Revenues									$ 1,274,499	$ 1,292,098	$ 1,126,309
Industrial [Member] | Americas [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									40.00%	38.00%	39.00%
Industrial [Member] | EMEA [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									40.00%	41.00%	41.00%
Industrial [Member] | Asia Pacific [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									20.00%	21.00%	20.00%
WIDIA [Member]
External Sales [Abstract]
Revenues									$ 197,522	$ 198,568	$ 177,662
WIDIA [Member] | Americas [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									45.00%	46.00%	49.00%
WIDIA [Member] | EMEA [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									26.00%	25.00%	24.00%
WIDIA [Member] | Asia Pacific [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									29.00%	29.00%	27.00%
Infrastructure [Member]
External Sales [Abstract]
Revenues									$ 903,213	$ 877,187	$ 754,397
Infrastructure [Member] | Americas [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									66.00%	65.00%	65.00%
Infrastructure [Member] | EMEA [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									16.00%	16.00%	17.00%
Infrastructure [Member] | Asia Pacific [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									18.00%	19.00%	18.00%

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