Net Income (Loss) Per Common Share (Schedule Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Earnings Per Share [Abstract]
Loss from continuing operations																	$ 830,209		$ (60,844)		$ (834,019)
Income from discontinued operations, net of income taxes and non-controlling interest																	0		0		43,162
Net income (loss)	724,040	[1]	30,725	[1]	39,452	[1]	35,993	[1]	27,357	[1]	30,208	[1]	(39,000)	[1]	(79,408)	[1]	830,209		(60,844)		(790,857)
Net (loss) income available to non-controlling interest																	0		(220)		(179)
Net loss attributable to controlling interest																	830,209		(60,624)		(790,678)
Dividends and accretion of discount on preferred stock																	58,703		58,088		57,510
Net loss attributable to common shareholders	709,304	[1]	16,030	[1]	24,803	[1]	21,369	[1]	12,779	[1]	15,667	[1]	(53,504)	[1]	(93,654)	[1]	771,506		(118,712)		(848,188)
Loss from continuing operations attributable to controlling interest																	$ 771,506		$ (118,712)		$ (891,350)
Weighted average common shares outstanding, basic and diluted																	786,466		785,272		685,186
Potentially dilutive shares from assumed exercise of securities or other contracts to purchase common stock																	123,636	[2]	0	[2]	0	[2]
Weighted average common shares outstanding, diluted																	910,102		785,272		685,186
Net income (loss) per common share, basic:
Net income (loss) from continuing operations attributable to common shareholders (per share)	$ 0.90		$ 0.02		$ 0.03		$ 0.03		$ 0.02		$ 0.02		$ (0.07)		$ (0.12)		$ 0.98		$ (0.15)		$ (1.30)
Net income (loss) attributable to common shareholders (per share)																	$ 0.98		$ (0.15)		$ (1.24)
Net income (loss) per common share, basic:
Net income (loss) from continuing operations attributable to common shareholders (per share)	$ 0.78		$ 0.02		$ 0.03		$ 0.02										$ 0.85		$ (0.15)		$ (1.30)
Net income (loss) attributable to common shareholders (per share)									$ 0.01		$ 0.02		$ (0.07)		$ (0.12)		$ 0.85		$ (0.15)		$ (1.24)

[1] The fourth quarter of 2012 results reflect a $796.3 million income tax benefit due primarily to the reversal of substantially all of the deferred tax asset valuation allowance. For additional discussion of the valuation allowance for deferred tax assets, see "Part II - Item 8. Financial Statements and Supplementary Data - Note 24 - Income Taxes" of this Report.

[2] Due to the net loss attributable to common shareholders for the years ended December 31, 2011 and 2010, there were no potentially dilutive shares included in the diluted net loss per common share calculations; as such shares and adjustments would have been anti-dilutive.