Segment Information Revenues By Region (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues from External Customers [Line Items]
Revenue, Net	$ 495,491	$ 504,063	$ 1,425,202	$ 1,654,843
United States and Canada [Member]
Revenues from External Customers [Line Items]
Revenue, Net	227,784	224,956	616,555	802,542
Europe, Middle East, and Africa [Member]
Revenues from External Customers [Line Items]
Revenue, Net	208,546	211,195	635,691	648,050
Other [Member]
Revenues from External Customers [Line Items]
Revenue, Net	$ 59,161	$ 67,912	$ 172,956	$ 204,251