Restructuring and Related Charges - Restructuring Accrual (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Restructuring Reserve [Abstract]
Beginning Balance			$ 17,639
Restructuring Charges	$ 2,600	$ 1,100	5,287	$ 6,700
Asset Write-Down			(1,905)
Translation			(400)
Cash Expenditures			(10,012)
Ending Balance	10,609		10,609
Industrial [Member]
Restructuring Reserve [Abstract]
Beginning Balance			7,967
Restructuring Charges			2,283
Asset Write-Down			(1,057)
Translation			(145)
Cash Expenditures			(3,629)
Ending Balance	5,419		5,419
Industrial [Member] | Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			7,967
Restructuring Charges			1,204
Asset Write-Down			0
Translation			(145)
Cash Expenditures			(3,630)
Ending Balance	5,396		5,396
Industrial [Member] | Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			1,057
Asset Write-Down			(1,057)
Translation			0
Cash Expenditures			0
Ending Balance	0		0
Industrial [Member] | Other Restructuring [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			22
Asset Write-Down			0
Translation			0
Cash Expenditures			1
Ending Balance	23		23
WIDIA [Member]
Restructuring Reserve [Abstract]
Beginning Balance			2,102
Restructuring Charges			771
Asset Write-Down			(401)
Translation			(44)
Cash Expenditures			(1,094)
Ending Balance	1,334		1,334
WIDIA [Member] | Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			2,087
Restructuring Charges			363
Asset Write-Down			0
Translation			(44)
Cash Expenditures			(1,094)
Ending Balance	1,312		1,312
WIDIA [Member] | Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			401
Asset Write-Down			(401)
Translation			0
Cash Expenditures			0
Ending Balance	0		0
WIDIA [Member] | Other Restructuring [Member]
Restructuring Reserve [Abstract]
Beginning Balance			15
Restructuring Charges			7
Asset Write-Down			0
Translation			0
Cash Expenditures			0
Ending Balance	22		22
Infrastructure [Member]
Restructuring Reserve [Abstract]
Beginning Balance			7,570
Restructuring Charges			2,233
Asset Write-Down			(447)
Translation			(211)
Cash Expenditures			(5,289)
Ending Balance	3,856		3,856
Infrastructure [Member] | Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			7,558
Restructuring Charges			1,754
Asset Write-Down			0
Translation			(211)
Cash Expenditures			(5,291)
Ending Balance	3,810		3,810
Infrastructure [Member] | Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			447
Asset Write-Down			(447)
Translation			0
Cash Expenditures			0
Ending Balance	0		0
Infrastructure [Member] | Other Restructuring [Member]
Restructuring Reserve [Abstract]
Beginning Balance			12
Restructuring Charges			32
Asset Write-Down			0
Translation			0
Cash Expenditures			2
Ending Balance	$ 46		$ 46