Segment Information (Revenues by geographic region) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Revenue, Net	$ 522,093	$ 379,322	$ 1,046,647	$ 761,283
Americas [Member]
Segment Reporting Information [Line Items]
Revenue, Net	383,610		832,760
Europe [Member]
Segment Reporting Information [Line Items]
Revenue, Net	107,231		157,014
Other Geographic Locations [Member]
Segment Reporting Information [Line Items]
Revenue, Net	$ 31,252		$ 56,873