Earnings Per Common Share (Schedule Of Basic And Diluted Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2015		Jun. 30, 2014	Jun. 30, 2015		Jun. 30, 2014
Earnings Per Share [Abstract]
Net income (loss) from continuing operations	$ 169		$ 283	$ 348		$ 481
Preferred stock dividends	(1,251)	[1]	(65)	(1,318)	[1]	(133)
Net income (loss) from continuing operations attributable to common shareholders	(1,082)		218	(970)		348
Income (loss) from discontinued operations, net of tax	13		40	410		69
Net income (loss) attributable to common shareholders	$ (1,069)		$ 258	$ (560)		$ 417
Basic weighted-average common shares outstanding	482,847,164		481,350,249	482,550,842		480,563,267
Diluted weighted-average common shares outstanding	482,847,164		482,342,629	482,550,842		481,055,084
Earnings Per Share, Basic [Abstract]
Net income (loss) from continuing operations, Per Basic Share	$ (2.24)		$ 0.45	$ (2.01)		$ 0.73
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	0.03		0.09	0.85		0.14
Net (loss) income, Basic	(2.22)		0.54	(1.16)		0.87
Earnings Per Share, Diluted [Abstract]
Net income (loss) from continuing operations, Per Diluted Share	(2.24)		0.45	(2.01)		0.73
Income (loss) from discontinued operations, net of tax, Diluted	0.03		0.09	0.85		0.14
Net (loss) income, Diluted	$ (2.22)		$ 0.54	$ (1.16)		$ 0.87

[1] Preferred stock dividends for the three months and six months ended June 30, 2015, include $1,193 million recognized in connection with the partial redemption of the Series G Preferred Stock and the repurchase of the Series A Preferred Stock. These dividends represent an additional return to preferred shareholders calculated as the excess consideration paid over the carrying amount derecognized.