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Restructuring and Related Charges - Restructuring Accrual (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Restructuring Reserve [Abstract]
Beginning Balance			$ 19,212
Restructuring Charges	$ 1,800	$ 2,600	54,512	$ 5,300
Asset Write-Down			(2,656)
Translation			(1,123)
Cash Expenditures			(28,986)
Ending Balance	40,959		40,959
Industrial [Member]
Restructuring Reserve [Abstract]
Beginning Balance			8,898
Restructuring Charges			51,316
Asset Write-Down			(1,857)
Translation			(781)
Cash Expenditures			(25,435)
Ending Balance	32,141		32,141
Industrial [Member] \| Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			8,863
Restructuring Charges			49,455
Asset Write-Down			0
Translation			(780)
Cash Expenditures			(25,413)
Ending Balance	32,125		32,125
Industrial [Member] \| Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			1,857
Asset Write-Down			(1,857)
Translation			0
Cash Expenditures			0
Ending Balance	0		0
Industrial [Member] \| Other Restructuring [Member]
Restructuring Reserve [Abstract]
Beginning Balance			35
Restructuring Charges			4
Asset Write-Down			0
Translation			(1)
Cash Expenditures			(22)
Ending Balance	16		16
WIDIA [Member]
Restructuring Reserve [Abstract]
Beginning Balance			2,330
Restructuring Charges			383
Asset Write-Down			(41)
Translation			(28)
Cash Expenditures			(321)
Ending Balance	2,323		2,323
WIDIA [Member] \| Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			2,306
Restructuring Charges			342
Asset Write-Down			0
Translation			(28)
Cash Expenditures			(321)
Ending Balance	2,299		2,299
WIDIA [Member] \| Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			41
Asset Write-Down			(41)
Translation			0
Cash Expenditures			0
Ending Balance	0		0
WIDIA [Member] \| Other Restructuring [Member]
Restructuring Reserve [Abstract]
Beginning Balance			24
Restructuring Charges			0
Asset Write-Down			0
Translation			0
Cash Expenditures			0
Ending Balance	24		24
Infrastructure [Member]
Restructuring Reserve [Abstract]
Beginning Balance			7,984
Restructuring Charges			2,813
Asset Write-Down			(758)
Translation			(314)
Cash Expenditures			(3,230)
Ending Balance	6,495		6,495
Infrastructure [Member] \| Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			7,956
Restructuring Charges			2,053
Asset Write-Down			0
Translation			(313)
Cash Expenditures			(3,225)
Ending Balance	6,471		6,471
Infrastructure [Member] \| Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			758
Asset Write-Down			(758)
Translation			0
Cash Expenditures			0
Ending Balance	0		0
Infrastructure [Member] \| Other Restructuring [Member]
Restructuring Reserve [Abstract]
Beginning Balance			28
Restructuring Charges			2
Asset Write-Down			0
Translation			(1)
Cash Expenditures			(5)
Ending Balance	$ 24		$ 24