Restructuring and Related Charges - Restructuring Accrual (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Document Period End Date			Dec. 31, 2019
Restructuring Reserve [Abstract]
Beginning Balance			$ 19,212
Restructuring Charges	$ 48,000	$ 1,500	52,714	$ 2,600
Asset Write-Down			(3,080)
Translation			90
Cash Expenditures			(12,439)
Ending Balance	56,497		56,497
Industrial [Member]
Restructuring Reserve [Abstract]
Beginning Balance			8,898
Restructuring Charges			49,731
Asset Write-Down			(2,298)
Translation			325
Cash Expenditures			(10,351)
Ending Balance	46,305		46,305
Industrial [Member] | Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			8,863
Restructuring Charges			47,429
Asset Write-Down			0
Translation			325
Cash Expenditures			(10,337)
Ending Balance	46,280		46,280
Industrial [Member] | Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			2,298
Asset Write-Down			(2,298)
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			0
Cash Expenditures			(14)
Ending Balance	25		25
WIDIA [Member]
Restructuring Reserve [Abstract]
Beginning Balance			2,330
Restructuring Charges			353
Asset Write-Down			(24)
Translation			(21)
Cash Expenditures			(221)
Ending Balance	2,417		2,417
WIDIA [Member] | Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			2,306
Restructuring Charges			329
Asset Write-Down			0
Translation			(21)
Cash Expenditures			(221)
Ending Balance	2,393		2,393
WIDIA [Member] | Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			24
Asset Write-Down			(24)
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			2,630
Asset Write-Down			(758)
Translation			(214)
Cash Expenditures			(1,867)
Ending Balance	7,775		7,775
Infrastructure [Member] | Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			7,956
Restructuring Charges			1,870
Asset Write-Down			0
Translation			(213)
Cash Expenditures			(1,863)
Ending Balance	7,750		7,750
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			(4)
Ending Balance	$ 25		$ 25