Earnings (Loss) Per Share (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		3 Months Ended
	Mar. 31, 2013	Mar. 31, 2014 Convertible Senior Notes, 7.25, Due in 2014 [Member]	Mar. 31, 2014 Convertible Senior Notes, 7.25, Due in 2014 [Member] Senior Notes [Member]	Mar. 31, 2014 Preferred Class A [Member]	Dec. 09, 2013 Preferred Class A [Member]	Apr. 08, 2014 Subsequent Event [Member] Preferred Class A [Member]
Debt Instrument [Line Items]
Distributions made to holders	0.7441
Convertible preferred stock, shares reserved for future issuance (shares)				147	16
Reduction in mandatory share distribution due to cash payment of employee withholding taxes (shares)						4
Stated interest rate percentage (percent)		7.25%	7.25%
Adjustment to net income (loss) for fair value of conversion feature for diluted earnings per share			$ 5