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Litigation, Claims, Contingencies and Other - Narrative (Details)
3 Months Ended
Mar. 31, 2018
USD ($)
Agreement
Mar. 31, 2017
USD ($)
Loss Contingencies [Line Items]    
Environmental remediation liability $ 2,300,000  
Maximum potential amount of future payments $ 19,100,000  
Guarantees relate to facilities leased by the company 2027-10  
Recourse provision to recover guarantees $ 0  
Bargaining agreements | Agreement 100  
Self insurance reserve $ 19,000,000  
Workers' compensation liability 13,600,000  
Self insurance reserve for general and auto 5,400,000  
Self insurance reserve on discontinued operations 2,800,000  
Payments for self insurance 1,500,000 $ 1,300,000
Self insurance reserve in which company is the primary obligor 10,400,000  
Self insurance reserve in which company is the primary obligor for workers compensation 6,900,000  
Self insurance reserve in which company is the primary obligor for general liability 3,500,000  
Minimum    
Loss Contingencies [Line Items]    
General range on claims 200,000  
Maximum    
Loss Contingencies [Line Items]    
General range on claims $ 500,000