CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Millions, except Share data, unless otherwise specified	Common Stock [Member] USD ($)	Preferred Stock [Member] Series B Preferred Stock [Member]	Preferred Stock [Member]	Additional Paid-In Capital [Member] Series B Preferred Stock [Member] USD ($)	Additional Paid-In Capital [Member] USD ($)	Retained Earnings [Member] USD ($)	Accumulated Comprehensive Income (Loss) [Member] USD ($)	Series B Preferred Stock [Member] USD ($)	Total USD ($)
Balance at Dec. 31, 2014	$ 4				$ 1,019	$ 3,577	$ 62		$ 4,662
Balance, shares at Dec. 31, 2014	354,488,992
Comprehensive income:
Net income						78			78
Other comprehensive loss							(14)		(14)
Comprehensive income									64
Stock-based compensation					11				11
Preferred stock dividends						(25)			(25)
Issuance of restricted stock, shares	100,147
Cancellation of restricted stock, shares	(17,023)
Issuance of stock, shares	30,000,000	1,725,000
Issuance of stock				1,673	669			1,673	669
Tax withholding - stock compensation, shares	(36)
Non-controlling interest						3			3
Balance at Mar. 31, 2015	$ 4				$ 3,372	$ 3,633	$ 48		$ 7,057
Balance, shares at Mar. 31, 2015	384,572,080
Balance, shares at Mar. 31, 2015			1,725,000						1,725,000