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Reportable Segment Information - Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2016
USD ($)
segment
Mar. 31, 2015
USD ($)
Segment Reporting Information [Line Items]    
Number of operating segments | segment 4  
Reportable Segment Information (Textual) [Abstract]    
Net external sales $ 2,574,024 $ 2,450,284
Segment profit 365,152 280,382
Foreign Countries [Member]    
Reportable Segment Information (Textual) [Abstract]    
Net external sales 400,700 456,500
Segment profit 10,200 18,300
Long-lived assets $ 509,800 $ 513,800