Goodwill And Intangible Assets (Schedule Of Goodwill And Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Schedule Of Goodwill And Intangible Assets [Line Items]
Gross Assets	$ 896,015	$ 896,015
Accumulated Amortization	(458,167)	(393,346)
Intangible Assets, Net	437,848	502,669
Registered trademarks	52,000	52,000
Goodwill	1,039,364	1,037,004
Total	1,091,364	1,089,004
Proprietary Technology [Member]
Schedule Of Goodwill And Intangible Assets [Line Items]
Gross Assets	361,660	361,660
Accumulated Amortization	(170,157)	(142,679)
Intangible Assets, Net	191,503	218,981
Customer Contracts And Relationships [Member]
Schedule Of Goodwill And Intangible Assets [Line Items]
Gross Assets	534,355	534,355
Accumulated Amortization	(288,010)	(250,667)
Intangible Assets, Net	$ 246,345	$ 283,688