Segment Information (Schedule of Revenue by Geographic Location) (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]
Revenues, net	$ 678,950	$ 632,165	$ 601,138	$ 668,682	$ 609,444	$ 519,550	$ 522,093	$ 524,554	$ 2,580,935	$ 2,175,641	$ 1,591,858
North America [Member]
Segment Reporting Information [Line Items]
Revenues, net									2,114,172	1,733,402
Europe [Member]
Segment Reporting Information [Line Items]
Revenues, net									317,759	311,503
Other Geographic Locations [Member]
Segment Reporting Information [Line Items]
Revenues, net									$ 149,004	$ 130,736