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CONTINGENCIES AND COMMITMENTS (Tables) | 3 Months Ended
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Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Change in Accruals Related to Third-Party Claims | The following table presents changes in the third-party claims liability since December 31, 2015. The balance for the third-party claims liability is included in Other current liabilities in PG&E Corporation’s and the Utility’s Condensed Consolidated Balance Sheets:
Loss Accrual (in millions) |  |
Balance at December 31, 2015 |  | $ | — |
Accrued losses |  | 750 |
Payments (1) |  | (60) |
Balance at December 31, 2016 |  | 690 |
Accrued losses |  | 350 |
Payments (1) |  | (479) |
Balance at December 31, 2017 |  | 561 |
Accrued losses |  | — |
Payments (1) |  | (118 | )
Balance at March 31, 2018 |  | $ | 443 |
(1) As of March 31, 2018 the Utility entered into settlement agreements in connection with the Butte fire corresponding to approximately $734 million of which $657 million has been paid by the Utility.
Changes in Insurance Receivable | The following table presents changes in the insurance receivable since December 31, 2015. The balance for the insurance receivable is included in Other accounts receivable in PG&E Corporation’s and the Utility’s Condensed Consolidated Balance Sheets:
Insurance Receivable (in millions) |  |
Balance at December 31, 2015 |  | $ | — |
Accrued insurance recoveries |  | 625 |
Reimbursements |  | (50) |
Balance at December 31, 2016 |  | 575 |
Accrued insurance recoveries |  | 297 |
Reimbursements |  | (276) |
Balance at December 31, 2017 |  | 596 |
Accrued insurance recoveries |  | — |
Reimbursements |  | (197 | )
Balance at March 31, 2018 |  | $ | 399 |
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
| March 31, |  | December 31,
(in millions) | 2018 |  | 2017
Topock natural gas compressor station | $ | 342 |  |  | $ | 334 |
Hinkley natural gas compressor station | 144 |  |  | 147 |
Former manufactured gas plant sites owned by the Utility or third parties (1) | 329 |  |  | 320 |
Utility-owned generation facilities (other than fossil fuel-fired), other facilities, and third-party disposal sites (2) | 113 |  |  | 115 |
Fossil fuel-fired generation facilities and sites (3) | 157 |  |  | 123 |
Total environmental remediation liability | $ | 1,085 |  |  | $ | 1,039 |
(1) Primarily driven by the following sites: Vallejo, San Francisco East Harbor, Napa, and San Francisco North Beach. (2) Primarily driven by the Shell Pond site. (3) Primarily driven by the San Francisco Potrero Power Plant

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