v2.4.0.6

Property, Plant and Equipment, Net (Tables) | 12 Months Ended
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Dec. 31, 2011
Property, Plant and Equipment, Net [Abstract] |
Components of Property, Plant and Equipment | As of December 31, 2011 and 2010, the components of property, plant and equipment, are stated at cost less accumulated depreciation as follows (in millions):
| 2011 |  | 2010
Buildings, machinery and equipment | $ | 15,074 |  |  | $ | 14,669 |
Geothermal properties | 1,163 |  |  | 1,102 |
Other | 156 |  |  | 182 |
| 16,393 |  |  | 15,953 |
Less: Accumulated depreciation | 4,158 |  |  | 3,690 |
| 12,235 |  |  | 12,263 |
Land | 91 |  |  | 93 |
Construction in progress | 693 |  |  | 622 |
Property, plant and equipment, net | $ | 13,019 |  |  | $ | 12,978 |

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