WILDFIRE-RELATED CONTINGENCIES (Plan Support Agreements with Public Entities) (Details) - Settled Litigation	Jun. 18, 2019 USD ($)
Public Entity Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	$ 1,000,000,000.0
Fund to support defense or resolution of claims for each PSA	10,000,000.0
2017 Northern California Wildfire Public Entities Claims
Loss Contingencies [Line Items]
Settlement reached	415,000,000.0
Town Of Paradise Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	270,000,000.0
County Of Butte Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	252,000,000.0
Paradise Recreation & Park District Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	47,500,000
County Of Yuba Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	12,500,000
Calaveras County Water District Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	$ 3,000,000.0