Earnings Per Common Share (Schedule Of Basic And Diluted Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014
Earnings Per Share [Abstract]
Net income (loss) from continuing operations	$ 273	$ 293	$ 621		$ 774
Preferred stock dividends	(38)	(67)	(1,356)	[1]	(200)
Net income (loss) from continuing operations attributable to common shareholders	235	226	(735)		574
Income (loss) from discontinued operations, net of tax	(5)	130	405		199
Net income (loss) attributable to common shareholders	$ 230	$ 356	$ (330)		$ 773
Basic weighted-average common shares outstanding	483,073,329	481,611,138	482,725,342		480,916,395
Diluted weighted-average common shares outstanding	484,399,091	482,506,091	482,725,342		481,545,506
Earnings Per Share, Basic [Abstract]
Net income (loss) from continuing operations, Per Basic Share	$ 0.49	$ 0.47	$ (1.52)		$ 1.19
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	(0.01)	0.27	0.84		0.41
Net (loss) income, Basic	0.48	0.74	(0.68)		1.60
Earnings Per Share, Diluted [Abstract]
Net income (loss) from continuing operations, Per Diluted Share	0.49	0.47	(1.52)		1.19
Income (loss) from discontinued operations, net of tax, Diluted	(0.01)	0.27	0.84		0.41
Net (loss) income, Diluted	$ 0.47	$ 0.74	$ (0.68)		$ 1.60

[1] Preferred stock dividends for the nine months ended September 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. Refer to Note 16 for additional preferred stock information.