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Reportable Segment Information - Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
segment
Mar. 31, 2016
USD ($)
Segment Reporting [Abstract]    
Number of operating segments | segment 4  
Reportable Segment Information (Textual) [Abstract]    
Net external sales $ 2,761,387 $ 2,574,024
Segment profit 306,605 216,365 [1]
Foreign subsidiaries    
Reportable Segment Information (Textual) [Abstract]    
Net external sales 419,000 400,700
Segment profit 13,800 10,200
Long-lived assets $ 497,100 $ 509,800
[1] First quarter 2016 income taxes, net income, basic and diluted net income per common share and diluted average shares and equivalents outstanding are restated due to the adoption of ASU No. 2016-09 in the second quarter of 2016.