Comprehensive Income (Loss) (Components Of Total Comprehensive Income (Loss)) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Comprehensive Income (Loss)
Net income (loss), including noncontrolling interests	$ 46,826	$ 26,947	$ 115,570	$ (75,128)
Foreign currency translation gain (loss)	1,588	5,436	2,287	(8,372)
Unrealized gain (loss) on hedges, net	33,888	(3,795)	44,291	12,308
Unrealized loss on investment available for sale		(123)		(679)
Total other comprehensive income (loss)	$ 82,302	$ 28,465	$ 162,148	$ (71,871)