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Segment Data - Geographic Sales Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)
External Sales and Long-Lived Assets [Line Items]
Number of countries in Other	27								27
Sales from Other country did not exceed									2.00%
Property, Plant and Equipment, Net	$ 1,038,271				$ 934,895				$ 1,038,271	$ 934,895	$ 824,200
External Sales [Abstract]
Sales	379,053	$ 483,084	$ 505,080	$ 518,088	603,949	$ 597,204	$ 587,394	$ 586,687	1,885,305	2,375,234	2,367,853
Total Long-Lived Assets [Abstract]
Long-Lived Assets	1,038,271				934,895				$ 1,038,271	$ 934,895	$ 824,213
Americas [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									49.00%	50.00%	49.00%
UNITED STATES
External Sales [Abstract]
Sales									$ 778,054	$ 1,014,189	$ 970,003
Total Long-Lived Assets [Abstract]
Long-Lived Assets	607,222				525,713				607,222	525,713	456,678
GERMANY
External Sales [Abstract]
Sales									248,796	314,035	331,893
Total Long-Lived Assets [Abstract]
Long-Lived Assets	210,674				201,714				210,674	201,714	188,673
CHINA
External Sales [Abstract]
Sales									214,364	247,858	271,343
Total Long-Lived Assets [Abstract]
Long-Lived Assets	92,658				78,410				92,658	78,410	67,462
INDIA
External Sales [Abstract]
Sales									81,366	113,287	102,120
Total Long-Lived Assets [Abstract]
Long-Lived Assets	44,673				44,643				44,673	44,643	31,984
ITALY
External Sales [Abstract]
Sales									52,699	68,585	69,049
CANADA
External Sales [Abstract]
Sales									90,247	108,261	102,139
Total Long-Lived Assets [Abstract]
Long-Lived Assets	20,508				20,435				20,508	20,435	19,396
FRANCE
External Sales [Abstract]
Sales									45,817	59,899	62,982
UNITED KINGDOM
External Sales [Abstract]
Sales									33,305	44,384	45,714
ISRAEL
Total Long-Lived Assets [Abstract]
Long-Lived Assets	22,249				24,042				22,249	24,042	25,831
Other
External Sales [Abstract]
Sales									340,657	404,736	412,610
Total Long-Lived Assets [Abstract]
Long-Lived Assets	$ 40,287				$ 39,938				$ 40,287	$ 39,938	$ 34,189
EMEA [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									30.00%	30.00%	31.00%
Asia Pacific [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									21.00%	20.00%	20.00%
Industrial [Member]
External Sales [Abstract]
Sales									$ 1,015,058	$ 1,274,499	$ 1,292,098
Industrial [Member] | Americas [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									41.00%	40.00%	38.00%
Industrial [Member] | EMEA [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									38.00%	40.00%	41.00%
Industrial [Member] | Asia Pacific [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									21.00%	20.00%	21.00%
WIDIA [Member]
External Sales [Abstract]
Sales									$ 162,995	$ 197,522	$ 198,568
WIDIA [Member] | Americas [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									48.00%	45.00%	46.00%
WIDIA [Member] | EMEA [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									27.00%	26.00%	25.00%
WIDIA [Member] | Asia Pacific [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									25.00%	29.00%	29.00%
Infrastructure [Member]
External Sales [Abstract]
Sales									$ 707,252	$ 903,213	$ 877,187
Infrastructure [Member] | Americas [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									62.00%	66.00%	65.00%
Infrastructure [Member] | EMEA [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									18.00%	16.00%	16.00%
Infrastructure [Member] | Asia Pacific [Member]
External Sales and Long-Lived Assets [Line Items]
Revenues, percent									20.00%	18.00%	19.00%

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