Segment Information (Schedule of Revenue by Geographic Location) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenues, net	$ 609,444	$ 519,550	$ 522,093	$ 524,554	$ 435,247	$ 395,328	$ 379,322	$ 381,961	$ 2,175,641	$ 1,591,858	$ 1,352,577
North America [Member]
Segment Reporting Information [Line Items]
Revenues, net									1,733,402
Europe [Member]
Segment Reporting Information [Line Items]
Revenues, net									311,503
Other Geographic Locations [Member]
Segment Reporting Information [Line Items]
Revenues, net									$ 130,736