v2.3.0.15
Acquisitions, Divestitures and Discontinued Operations (Details) (USD $)
3 Months Ended9 Months Ended9 Months Ended
Sep. 30, 2011
Dec. 31, 2010
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Dec. 06, 2010
Jul. 02, 2010
Sep. 30, 2011
Conectiv
Sep. 30, 2010
Conectiv
Mar. 02, 2011
Conectiv
Summary of Conectiv Acquisition [Abstract]          
Consideration      $ 1,640,000,000   
Assets:          
Current assets      78,000,000   
Property, plant and equipment, net      1,574,000,000   
Other long-term assets      85,000,000   
Total assets acquired      1,737,000,000   
Liabilities:          
Current liabilities      46,000,000   
Long-term liabilities      51,000,000   
Total liabilities assumed      97,000,000   
Net assets acquired      1,640,000,000   
Components of Discontinued Operations          
Operating revenues  25,000,000 74,000,000     
Income from discontinued operations before taxes  17,000,000 37,000,000     
Income tax expense  (2,000,000) 6,000,000     
Discontinued operations, net of tax expense  19,000,000 31,000,000     
Number of Conectiv power plants acquired      18   
Cap on environmental remediation liabilities acquired      10,000,000   
Number of Conectiv employees who joined Calpine      130   
Proceeds from NDH Project Debt      1,300,000,000   
Blue Spruce and Rocky Mountain ownership interest sold percentage     100.00%    
Blue Spruce and Rocky Mountain sale price     739,000,000    
Blue Spruce and Rocky Mountain gain on sale 209,000,000        
Business Acquisition [Line Items]          
Power generation capacity acquired (in Megawatts)11,37213,553 11,372     4,491
Calpine cash contribution   $ 87,000,000$ 1,000,000  $ 110,000,000$ 540,000,000