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Restructuring and Related Charges and Asset Impairment Charges - Restructuring and Related Charges Narrative (Details) - USD ($)
12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Restructuring and Related Costs and Reserve [Line Items]      
Tangible Asset Impairment Charges   $ 5,400,000  
Restructuring and Related Cost, Incurred Cost $ 76,200,000 53,500,000 $ 58,100,000
Restructuring Charges 65,606,000 30,015,000 42,100,000
Restructuring Charges Related to Inventory Disposals 600,000   1,500,000
Assets held for sale (Note 15) 6,980,000 0  
Restructuring Reserve, Current 27,294,000 15,703,000 20,788,000
Restructuring Reserve, Noncurrent 2,500,000    
Industrial [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring Charges 39,613,000 16,154,000  
WIDIA [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring Charges 6,361,000 1,795,000  
Infrastructure [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring Charges 19,632,000 12,066,000  
Ongoing Restructuring [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring and Related Cost, Cost Incurred to Date 147,700,000    
Ongoing Restructuring [Member] | Minimum [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring and Related Cost, Expected Cost 165,000,000    
Ongoing Restructuring [Member] | Maximum [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring and Related Cost, Expected Cost 195,000,000    
Ongoing Restructuring [Member] | Industrial [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring and Related Cost, Expected Cost 0.60    
Restructuring and Related Cost, Cost Incurred to Date 80,500,000    
Ongoing Restructuring [Member] | WIDIA [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring and Related Cost, Expected Cost 0.05    
Restructuring and Related Cost, Cost Incurred to Date 12,900,000    
Ongoing Restructuring [Member] | Infrastructure [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring and Related Cost, Expected Cost 0.30    
Restructuring and Related Cost, Cost Incurred to Date 47,000,000    
Ongoing Restructuring [Member] | Corporate Segment [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring and Related Cost, Expected Cost 0.05    
Restructuring and Related Cost, Cost Incurred to Date 7,300,000    
Cost of Sales [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring Related Charges 7,100,000 7,300,000 8,200,000
Operating Expense [Member]      
Restructuring and Related Costs and Reserve [Line Items]      
Restructuring Related Charges $ 3,500,000 $ 16,200,000 $ 7,800,000