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Reportable Segment Information - Narrative (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Sep. 30, 2015
USD ($)
segment
Sep. 30, 2014
USD ($)
Segment Reporting Information [Line Items]        
Number of operating segments | segment     4  
Reportable Segment Information (Textual) [Abstract]        
Net external sales $ 3,152,285 $ 3,150,570 $ 8,734,708 $ 8,560,121
Segment profit 652,962 583,339 1,542,271 1,366,026
Foreign Countries [Member]        
Reportable Segment Information (Textual) [Abstract]        
Net external sales 441,200 571,900 1,374,000 1,678,000
Segment profit 14,300 25,400 55,000 70,200
Long-lived assets $ 491,600 $ 577,700 $ 491,600 $ 577,700