Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Earnings Per Share [Abstract]
Net Income (Loss)	$ (22)		$ 200
Weighted Average Number of Shares Outstanding, Basic (in shares)	370,000,000	[1]	360,000,000	[1]
Incremental Shares from Assumed Conversion of Dilutive Stock Options, Restricted Stock, and Shares of Common Stock in Rabbi Trust (in shares)	0	[2]	5,000,000	[2]
Weighted Average Number of Shares Outstanding, Diluted (in shares)	370,000,000		365,000,000
Earnings (Loss) from Continuing Operations Per Share, Basic (in dollars per share)	$ (0.06)		$ 0.56
Earnings (Loss) from Continuing Operations Per Share, Diluted (in dollars per share)	$ (0.06)		$ 0.55
Number of antidilutive stock options, shares of restricted stock and shares of common stock in rabbi trust excluded from calculation above (in shares)	9,000,000		6,000,000
Underwritten public offering (in shares)	24,150,000

[1] The weighted average number of shares outstanding includes the weighted average shares of common stock issued in connection with the underwritten public offering of 24,150,000 shares of common stock of the Company in first quarter 2015.

[2] (2) For the three months ended March 31, 2015, all outstanding options and non-vested restricted shares have been excluded from the calculation of diluted EPS as the Company incurred a loss for the quarter. Therefore, inclusion of outstanding options and non-vested restricted shares in the calculation of diluted EPS would be anti-dilutive.