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
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net income (loss) from continuing operations	$ 179	$ 198
Preferred stock dividends	(67)	(68)
Net income (loss) from continuing operations attributable to common shareholders	112	130
Income (loss) from discontinued operations, net of tax	397	29
Net income (loss) attributable to common shareholders	$ 509	$ 159
Basic weighted-average common shares outstanding	482,247,935	479,767,540
Diluted weighted-average common shares outstanding	482,781,619	479,767,540
Earnings Per Share, Basic [Abstract]
Net income (loss) from continuing operations, Per Basic Share	$ 0.23	$ 0.27
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	$ 0.82	$ 0.06
Net (loss) income, Basic	$ 1.06	$ 0.33
Earnings Per Share, Diluted [Abstract]
Net income (loss) from continuing operations, Per Diluted Share	$ 0.23	$ 0.27
Income (loss) from discontinued operations, net of tax, Diluted	$ 0.82	$ 0.06
Net (loss) income, Diluted	$ 1.06	$ 0.33