Income Taxes (Reconciliation Of Gross Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Balance at beginning of year	$ 58,165	$ 72,611	$ 41,400
Increases in tax positions for current year	15,531	1,245	5,204
Increases in tax positions for prior years	4,518	7,857	5,641
Acquired increases in tax positions for prior years			31,019
Decreases in tax positions for prior years	(31,162)	(18,295)	(4,181)
Settlement of tax matters	(4,066)	(3,884)	(5,249)
Lapse of applicable statutes of limitations	(1,285)	(1,369)	(1,223)
Balance at end of year	$ 41,701	$ 58,165	$ 72,611