Other Financial Information, Interest and Other Income Net (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Component of Other Income, Nonoperating [Line Items]
Interest income	$ 2,200,000	$ 2,800,000	$ 7,200,000	$ 8,000,000
Interest expense	(14,000,000)	(2,600,000)	(35,600,000)	(6,200,000)
Other	(4,200,000)	0	(7,700,000)	3,900,000
Other income (expense), net	(15,957,000)	205,000	(36,107,000)	5,729,000
Legal Fees	$ 1,400,000		$ 6,800,000