Segment and Geographic Area Information Net Sales by Geographic Area (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Net sales		$ 930,353	$ 905,093	$ 931,485	$ 884,404	$ 598,566	$ 642,418	$ 604,721	$ 599,843	$ 3,651,335	$ 2,445,548	$ 2,394,270
United States
Segment Reporting Information [Line Items]
Net sales										1,118,847	884,373	933,182
Foreign
Segment Reporting Information [Line Items]
Net sales	[1]									$ 2,532,488	$ 1,561,175	$ 1,461,088

[1] No sales in a foreign country exceed 10% of total net sales. Also, net sales are attributed to countries based upon shipments to final destination.