CONTINGENCIES AND COMMITMENTS (Other Matters) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Pacific Gas & Electric Co
Loss Contingencies [Line Items]
Accrued legal liabilities	$ 94	$ 86

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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