Consolidated Statement Of Changes In Equity - USD ($) $ in Millions	Total		Common stock and paid-in capital [Member]	Preferred stock [Member]	Retained earnings (accumulated deficit) [Member]		Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]
Beginning Balance at Dec. 31, 2013	$ 14,208		$ 20,939	$ 1,255	$ (7,710)		$ (276)	$ 0
Net income (loss)	550				550
Preferred stock dividends	(133)				(133)
Employee Benefits and Share-based Compensation	72		72
Other comprehensive income (loss)	181						181
Ending Balance at Jun. 30, 2014	14,878		21,011	1,255	(7,293)		(95)	0
Beginning Balance at Dec. 31, 2014	15,399		21,038	1,255	(6,828)		(66)	0
Net income (loss)	758				758
Preferred stock dividends	(1,318)	[1]			(1,318)	[2]
Stock Repurchased During Period, Value	325			(325)
Preferred stock redemption	117			(117)
Employee Benefits and Share-based Compensation	31		31
Other comprehensive income (loss)	(117)						(117)
Share repurchases related to employee stock-based compensation awards	(16)							(16)
Ending Balance at Jun. 30, 2015	14,295		$ 21,069	$ 813	$ (7,388)		$ (183)	$ (16)
Stock Repurchase and Redemption Premium	$ 1,193

[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.

[2] Preferred stock dividends 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.