Earnings (Loss) Per Common Share (Schedule Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Basic Earnings (Loss) Per Share
Net income (loss) available to common shareholders	$ 24,803	$ (53,504)	$ 46,172	$ (147,158)
Weighted average number of common shares, outstandind	786,576,000	785,277,000	786,355,000	785,260,000
Basic earnings (loss) per share	$ 0.03	$ (0.07)	$ 0.06	$ (0.19)
Diluted Earnings (Loss) Per Share
Net income (loss) available to common shareholders	24,803	(53,504)	46,172	(147,158)
Weighted average number of common shares, outstandind	786,576,000	785,277,000	786,355,000	785,260,000
Effect of diluted share based awards			338	336
Effect of tMEDS settlement			$ 122,849	$ 122,849
Weighted average number of diluted common shares	909,761,000	785,277,000	909,542,000	785,260,000
Diluted earnings (loss) per share	$ 0.03	$ (0.07)	$ 0.05	$ (0.19)
Number of anti-dilituve shares	25,500,000		25,500,000