Earnings Per Common Share (Schedule Of Basic And Diluted Earnings Per Common Share) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Net income (loss) from continuing operations	$ 293	$ 177	$ 774	$ 337
Preferred stock dividends - U.S. Department of Treasury	0	(134)	0	(401)
Preferred stock dividends	(67)	(67)	(200)	(200)
Net income (loss) from continuing operations attributable to common shareholders	226	(24)	574	(264)
Income (loss) from discontinued operations, net of tax	130	(86)	199	(80)
Net income (loss) attributable to common shareholders	$ 356	$ (110)	$ 773	$ (344)
Basic weighted-average common shares outstanding	481,611,138	412,600,700	480,916,395	412,600,700
Diluted weighted-average common shares outstanding	482,506,091	412,600,700	481,545,506	412,600,700
Earnings Per Share, Basic [Abstract]
Net income (loss) from continuing operations, Per Basic Share	$ 0.47	$ (0.06)	$ 1.19	$ (0.64)
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	$ 0.27	$ (0.21)	$ 0.41	$ (0.19)
Net (loss) income, Basic	$ 0.74	$ (0.27)	$ 1.60	$ (0.83)
Earnings Per Share, Diluted [Abstract]
Net income (loss) from continuing operations, Per Diluted Share	$ 0.47	$ (0.06)	$ 1.19	$ (0.64)
Income (loss) from discontinued operations, net of tax, Diluted	$ 0.27	$ (0.21)	$ 0.41	$ (0.19)
Net (loss) income, Diluted	$ 0.74	$ (0.27)	$ 1.60	$ (0.83)
Potential common shares excluded from diluted earnings per share calculation		178,000,000