v3.7.0.1

Basis of Presentation and Summary of Significant Accounting Policies (Tables) | 3 Months Ended
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Mar. 31, 2017
Accounting Policies [Abstract] |
Schedule of components of restricted cash | The table below represents the components of our restricted cash as of March 31, 2017 and December 31, 2016 (in millions):
| March 31, 2017 |  | December 31, 2016
| Current |  | Non-Current |  | Total |  | Current |  | Non-Current |  | Total
Debt service | $ | 12 |  |  | $ | 7 |  |  | $ | 19 |  |  | $ | 11 |  |  | $ | 8 |  |  | $ | 19 |
Construction/major maintenance | 48 |  |  | 6 |  |  | 54 |  |  | 45 |  |  | 6 |  |  | 51 |
Security/project/insurance | 99 |  |  | — |  |  | 99 |  |  | 114 |  |  | — |  |  | 114 |
Other | 3 |  |  | 2 |  |  | 5 |  |  | 3 |  |  | 1 |  |  | 4 |
Total | $ | 162 |  |  | $ | 15 |  |  | $ | 177 |  |  | $ | 173 |  |  | $ | 15 |  |  | $ | 188 |
Schedule of property, plant and equipment | Property, Plant and Equipment, Net — At March 31, 2017 and December 31, 2016, the components of property, plant and equipment are stated at cost less accumulated depreciation as follows (in millions):
| March 31, 2017 |  | December 31, 2016 |  | Depreciable Lives
Buildings, machinery and equipment | $ | 16,481 |  |  | $ | 16,468 |  |  | 3 | – | 46 | Years
Geothermal properties | 1,460 |  |  | 1,377 |  |  | 13 | – | 58 | Years
Other | 237 |  |  | 259 |  |  | 3 | – | 46 | Years
| 18,178 |  |  | 18,104 |  |  |  |  |  |
Less: Accumulated depreciation | 5,975 |  |  | 5,865 |  |  |  |  |  |
| 12,203 |  |  | 12,239 |  |  |  |  |  |
Land | 116 |  |  | 116 |  |  |  |  |  |
Construction in progress | 690 |  |  | 658 |  |  |  |  |  |
Property, plant and equipment, net | $ | 13,009 |  |  | $ | 13,013 |  |  |  |  |  |
Schedule of Goodwill | Goodwill — The change in goodwill during the three months ended March 31, 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 |
Calpine Solutions purchase price allocation adjustment | (1 | ) |  | — |  |  | (2 | ) |  | (3 | )
Goodwill at March 31, 2017 | $ | 67 |  |  | $ | 31 |  |  | $ | 135 |  |  | $ | 233 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the cash and cash items which are restricted as to withdrawal or usage. The provisions of any restrictions are described in a note to the financial statements. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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