Restructuring and Related Charges - Restructuring Accrual (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Restructuring Reserve [Abstract]
Beginning Balance			$ 15,703
Restructuring Charges	$ 8,800	$ 3,500	37,347	$ 12,600
Asset Write-Down			(1,076)
Translation			(724)
Cash Expenditures			(32,146)
Ending Balance	19,104		19,104
Industrial [Member]
Restructuring Reserve [Abstract]
Beginning Balance			8,989
Restructuring Charges			21,298
Asset Write-Down			(100)
Translation			(422)
Cash Expenditures			(18,801)
Ending Balance	10,964		10,964
Industrial [Member] | Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			8,180
Restructuring Charges			21,270
Asset Write-Down			0
Translation			(412)
Cash Expenditures			(18,324)
Ending Balance	10,714		10,714
Industrial [Member] | Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			100
Asset Write-Down			(100)
Translation			0
Cash Expenditures			0
Ending Balance	0		0
Industrial [Member] | Other Restructuring [Member]
Restructuring Reserve [Abstract]
Beginning Balance			809
Restructuring Charges			(72)
Asset Write-Down			0
Translation			(10)
Cash Expenditures			(477)
Ending Balance	250		250
WIDIA [Member]
Restructuring Reserve [Abstract]
Beginning Balance			999
Restructuring Charges			4,498
Asset Write-Down			(9)
Translation			(90)
Cash Expenditures			(3,952)
Ending Balance	1,446		1,446
WIDIA [Member] | Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			909
Restructuring Charges			4,504
Asset Write-Down			0
Translation			(87)
Cash Expenditures			(3,880)
Ending Balance	1,446		1,446
WIDIA [Member] | Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			0
Restructuring Charges			9
Asset Write-Down			(9)
Translation			0
Cash Expenditures			0
Ending Balance	0		0
WIDIA [Member] | Other Restructuring [Member]
Restructuring Reserve [Abstract]
Beginning Balance			90
Restructuring Charges			(15)
Asset Write-Down			0
Translation			(3)
Cash Expenditures			(72)
Ending Balance	0		0
Infrastructure [Member]
Restructuring Reserve [Abstract]
Beginning Balance			5,715
Restructuring Charges			11,551
Asset Write-Down			(967)
Translation			(212)
Cash Expenditures			(9,393)
Ending Balance	6,694		6,694
Infrastructure [Member] | Severance [Member]
Restructuring Reserve [Abstract]
Beginning Balance			5,301
Restructuring Charges			10,620
Asset Write-Down			0
Translation			(205)
Cash Expenditures			(9,148)
Ending Balance	6,568		6,568
Infrastructure [Member] | Facilities [Member]
Restructuring Reserve [Abstract]
Beginning Balance			33
Restructuring Charges			967
Asset Write-Down			(967)
Translation			0
Cash Expenditures			0
Ending Balance	33		33
Infrastructure [Member] | Other Restructuring [Member]
Restructuring Reserve [Abstract]
Beginning Balance			381
Restructuring Charges			(36)
Asset Write-Down			0
Translation			(7)
Cash Expenditures			(245)
Ending Balance	$ 93		$ 93