v2.4.0.8
Basis of Presentation and Summary of Significant Accounting Policies Property, Plant and Equipment, Net (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended 27 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2016
Subsequent Event [Member]
Property, Plant and Equipment [Line Items]            
Power Plant Agreement Term           0 years 27 months
Impairment losses $ 123 $ 0 $ 123 $ 0    
Interest Costs Capitalized 3 9 15 33    
Buildings, machinery and equipment 15,528   15,528   15,838  
Geothermal properties 1,295   1,295   1,265  
Other 171   171   164  
Property, Plant and Equipment, Gross 16,994   16,994   17,267  
Less: Accumulated depreciation 4,840   4,840   4,897  
Property, Plant and Equipment, Gross, Less Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment 12,154   12,154   12,370  
Land 109   109   103  
Construction in progress 402   402   522  
Property, plant and equipment, net $ 12,665   $ 12,665   $ 12,995