Long-Term Debt And Equity Financings (Narrative) (Details) (Senior Unsecured Notes 8.875% Due 2014 [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Senior Unsecured Notes 8.875% Due 2014 [Member]
Long-Term Debt And Equity Financings [Line Items]
Excess in indebtedness upon default of maturity	$ 25