Earnings (Loss) Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Basic EPS:
Net income (loss)	$ (68)	$ 53	$ (127)	$ 111
Weighted average common shares outstanding (in shares)	14.7	10.1	12.5	10.1
Basic EPS (in dollars per share)	$ (4.56)	$ 5.23	$ (10.08)	$ 10.96
Diluted EPS:
Dilutive effect of stock awards (in shares)	0	0	0	0
Weighted average diluted shares outstanding (in shares)	14.7	10.1	12.5	10.1
Diluted EPS (in dollars per share)	$ (4.56)	$ 5.23	$ (10.08)	$ 10.96