v3.19.3.a.u2

Property, Plant and Equipment, Net | 12 Months Ended
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Dec. 31, 2019
Property, Plant and Equipment, Net [Abstract] |
Property, Plant and Equipment, Net | Property, Plant and Equipment, Net As of December 31, 2019 and 2018, the components of property, plant and equipment are stated at cost less accumulated depreciation as follows (in millions):
| 2019 |  | 2018 |  | Depreciable Lives
Buildings, machinery and equipment | $ | 16,510 |  |  | $ | 16,400 |  |  | 1.5 – 50 Years
Geothermal properties | 1,553 |  |  | 1,501 |  |  | 13 – 58 Years
Other | 291 |  |  | 286 |  |  | 3 – 50 Years
| 18,354 |  |  | 18,187 |  |  |
Less: Accumulated depreciation | 6,851 |  |  | 6,832 |  |  |
| 11,503 |  |  | 11,355 |  |  |
Land | 128 |  |  | 121 |  |  |
Construction in progress | 332 |  |  | 966 |  |  |
Property, plant and equipment, net | $ | 11,963 |  |  | $ | 12,442 |  |  |
Total depreciation expense, including amortization of finance lease assets, recorded for the years ended December 31, 2019, 2018 and 2017, was $627 million, $684 million and $638 million, respectively. We have various debt instruments that are collateralized by our property, plant and equipment. See Note 8 for a discussion of such instruments. Buildings, Machinery and Equipment This component primarily includes power plants and related equipment. Included in buildings, machinery and equipment are assets under finance leases. See Note 4 for further information regarding these assets under finance leases. Geothermal Properties This component primarily includes power plants and related equipment associated with our Geysers Assets. Other This component primarily includes software and hardware as well as emission reduction credits that are power plant specific and not available to be sold. Capitalized Interest The total amount of interest capitalized was $12 million, $29 million and $26 million for the years ended December 31, 2019, 2018 and 2017, respectively.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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