Recently Issued Accounting Pronouncements - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jan. 01, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net sales and intersegment transfers		$ 4,773,796	$ 3,735,817	$ 8,738,802	$ 6,497,204
Selling, general and administrative expenses		$ 1,307,861	$ 1,153,779	2,522,426	2,164,800
Unrealized Net Gains on Available-for-Sale Securities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification to retained earnings	$ 2,300			2,320	$ (8)
ASU 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net sales and intersegment transfers				(53,100)
Selling, general and administrative expenses				$ (53,100)