v3.7.0.1

Basis of Presentation and Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2017
Accounting Policies [Abstract] |
Schedule of components of restricted cash | The table below represents the components of our restricted cash as of June 30, 2017 and December 31, 2016 (in millions):
| June 30, 2017 |  | December 31, 2016
| Current |  | Non-Current |  | Total |  | Current |  | Non-Current |  | Total
Debt service | $ | 18 |  |  | $ | 8 |  |  | $ | 26 |  |  | $ | 11 |  |  | $ | 8 |  |  | $ | 19 |
Construction/major maintenance | 21 |  |  | 19 |  |  | 40 |  |  | 45 |  |  | 6 |  |  | 51 |
Security/project/insurance | 63 |  |  | — |  |  | 63 |  |  | 114 |  |  | — |  |  | 114 |
Other | 3 |  |  | 1 |  |  | 4 |  |  | 3 |  |  | 1 |  |  | 4 |
Total | $ | 105 |  |  | $ | 28 |  |  | $ | 133 |  |  | $ | 173 |  |  | $ | 15 |  |  | $ | 188 |
Schedule of property, plant and equipment | Property, Plant and Equipment, Net — At June 30, 2017 and December 31, 2016, the components of property, plant and equipment are stated at cost less accumulated depreciation as follows (in millions):
| June 30, 2017 |  | December 31, 2016 |  | Depreciable Lives
Buildings, machinery and equipment | $ | 16,511 |  |  | $ | 16,468 |  |  | 3 | – | 46 | Years
Geothermal properties | 1,468 |  |  | 1,377 |  |  | 13 | – | 58 | Years
Other | 232 |  |  | 259 |  |  | 3 | – | 46 | Years
| 18,211 |  |  | 18,104 |  |  |  |  |  |
Less: Accumulated depreciation | 6,123 |  |  | 5,865 |  |  |  |  |  |
| 12,088 |  |  | 12,239 |  |  |  |  |  |
Land | 117 |  |  | 116 |  |  |  |  |  |
Construction in progress | 735 |  |  | 658 |  |  |  |  |  |
Property, plant and equipment, net | $ | 12,940 |  |  | $ | 13,013 |  |  |  |  |  |
Schedule of Goodwill | Goodwill — We have not recorded any impairment losses associated with our goodwill. The change in goodwill by segment during the six months ended June 30, 2017 was as follows (in millions):
| West |  | Texas |  | East |  | Total
Goodwill at December 31, 2016 | $ | 68 |  |  | $ | 31 |  |  | $ | 88 |  |  | $ | 187 |
Acquisition of North American Power | — |  |  | — |  |  | 49 |  |  | 49 |
Purchase price allocation adjustments(1) | (4 | ) |  | (1 | ) |  | 11 |  |  | 6 |
Goodwill at June 30, 2017 | $ | 64 |  |  | $ | 30 |  |  | $ | 148 |  |  | $ | 242 |
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(1) | The purchase price allocation adjustment in the East segment represents adjustments of $16 million for North American Power and $(5) million for Calpine Solutions.

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