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Accounts Receivable (Details) - USD ($)
 12 Months Ended
Dec. 31, 2017
Feb. 28, 2017
Dec. 31, 2016
Factoring of receivables from facility program      
Derecognition of Financial Assets by Type of Transfer [Line Items]      
Agreement to sell trade receivables, maximum capacity $ 200,000,000 $ 250,000,000.0  
Term of agreement extensions 1 year    
Accounts receivable sold during period $ 80,000,000   $ 50,000,000
Factoring of receivables from supplier financing program      
Derecognition of Financial Assets by Type of Transfer [Line Items]      
Accounts receivable sold during period $ 52,300,000   $ 51,400,000