Segment Information Revenues By Region (Details) - Segments [Domain] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues from External Customers [Line Items]
Revenue, Net	$ 470,103	$ 489,353	$ 918,350	$ 964,148
United States and Canada [Member]
Revenues from External Customers [Line Items]
Revenue, Net	253,890	214,336	485,026	414,706
Europe, Middle East, and Africa [Member]
Revenues from External Customers [Line Items]
Revenue, Net	168,437	216,257	343,091	439,761
Other [Member]
Revenues from External Customers [Line Items]
Revenue, Net	$ 47,776	$ 58,760	$ 90,233	$ 109,681