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Debt (Details Textuals 2) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2011
Dec. 31, 2010
Sep. 30, 2011
Term Loan New
Sep. 30, 2011
Russell City Project
Sep. 30, 2011
Los Esteros Project
Mar. 02, 2011
Los Esteros Project
Dec. 31, 2010
Los Esteros Project
Debt Instrument [Line Items]       
Debt Instrument, Face Amount  $ 360$ 845$ 373  
Term Loan deferred financing costs14 52610  
Payments of Debt Issuance Costs22      
Power generation capacity (in Megawatts)11,37213,553 619 308188
Construction Loan Facility   700305  
Project Letter of Credit Facility   7738  
Debt Service Letter of Credit Facility   6830  
Term Loan Period   10   
Term loan interest rate added to LIBOR   2.25%2.25%  
Amount Drawn Under Construction Loan   16163  
Letters of credit issued$ 524[1]$ 588[1] $ 61$ 30  
[1]

When we entered into our Corporate Revolving Facility on December 10, 2010, the letters of credit issued under our First Lien Credit Facility were either replaced by letters of credit issued by the Corporate Revolving Facility or back-stopped by an irrevocable standby letter of credit issued by a third party. Our letters of credit issued under our Corporate Revolving Facility used for our commodity procurement and risk management activities at December 31, 2010 include those that were back-stopped of approximately $63 million. The back-stopped letters of credit were returned and extinguished during the first quarter of 2011.