Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Net income	$ 2,773	$ 1,136
Dividends distributed or available for distribution to senior preferred stockholder	(2,779)	(919)
Net income attributable to common stockholders	$ (6)	$ 217
Weighted-average common shares outstanding, Basic	5,762	5,762
Convertible preferred stock	0	131
Weighted-average common shares outstanding, Diluted	5,762	5,893
Earnings (loss) per share, Basic	$ 0.00	$ 0.04
Earnings (loss) per share, Diluted	$ 0.00	$ 0.04
Weighted average shares of common stock that would be issued upon the full exercise of the warrant issued to Treasury	4,600	4,600