Operating Segments and Related Information Operating Segments and Related Information (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011		Jun. 30, 2012	Jun. 30, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 338,291	$ 391,555	[1]	$ 686,743	$ 767,524	[1]
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	152,032	196,087	[1]	350,929	392,386	[1]
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	89,152	99,222	[1]	169,866	191,694	[1]
Other international
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 97,107	$ 96,246	[1]	$ 165,948	$ 183,444	[1]

[1] Amounts have been adjusted for the reclassification of certain discontinued operations to continuing operations.