Additional Financial Information (Earnings (Loss) Per Share) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Net income (loss)	$ (20)	$ (36)	$ (16)	$ 107	$ (8)	$ (7,735)	$ 207	$ 200	$ 35	$ (7,336)	$ (4,718)
Weighted average shares outstanding - basic	761,964,720	726,877,458	664,603,682	535,286,077	535,286,077	535,286,077	535,286,077	535,286,077	672,955,980	535,286,077	535,286,077
Dilutive effect of outstanding stock options and awards									3,929,235	0	0
Weighted average shares outstanding - diluted	761,964,720	726,877,458	664,603,682	535,286,077	535,286,077	535,286,077	535,286,077	535,286,077	676,885,215	535,286,077	535,286,077
Earnings (loss) per share - basic	$ (0.03)	$ (0.05)	$ (0.02)	$ 0.20	$ (0.01)	$ (14.45)	$ 0.39	$ 0.37	$ 0.05	$ (13.70)	$ (8.81)
Earnings (loss) per share - diluted	$ (0.03)	$ (0.05)	$ (0.02)	$ 0.20	$ (0.01)	$ (14.45)	$ 0.39	$ 0.37	$ 0.05	$ (13.70)	$ (8.81)
Dilutive Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive outstanding securities									2,161,350
Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive outstanding securities									2,748,391