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OTHER CONTINGENCIES AND COMMITMENTS (Tables) | 6 Months Ended
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Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Environmental Remediation Liability | The Utility’s environmental remediation liability is primarily included in non-current liabilities on the Condensed Consolidated Balance Sheets and is comprised of the following:
| Balance at
(in millions) | June 30, 2019 |  | December 31, 2018
Topock natural gas compressor station | $ | 346 |  |  | $ | 369 |
Hinkley natural gas compressor station | 142 |  |  | 146 |
Former manufactured gas plant sites owned by the Utility or third parties (1) | 580 |  |  | 520 |
Utility-owned generation facilities (other than fossil fuel-fired), other facilities, and third-party disposal sites (2) | 112 |  |  | 111 |
Fossil fuel-fired generation facilities and sites (3) | 125 |  |  | 137 |
Total environmental remediation liability | $ | 1,305 |  |  | $ | 1,283 |
(1) Primarily driven by the following sites: Vallejo, San Francisco East Harbor, Napa, Beach Street, San Francisco North Beach, and San Rafael MGP-Bio Marin MGP. (2) Primarily driven by the Geothermal landfill and Shell Pond site. (3) Primarily driven by the San Francisco Potrero Power Plant.

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- Definition The entire disclosure for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements. This element may be used for all of an entity's disclosures about environmental loss contingencies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -URI http://asc.fasb.org/subtopic&trid=2175709 + Details
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