WILDFIRE-RELATED CONTINGENCIES (Plan Support Agreements with Public Entities) (Details) - Settled Litigation $ in Millions	Jun. 18, 2019 USD ($)
Public Entity Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	$ 1,000.0
Fund to support defense or resolution of claims per plan support agreement	10.0
2017 Northern California Wildfire Public Entities
Loss Contingencies [Line Items]
Settlement reached	415.0
Town Of Paradise Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	270.0
County Of Butte Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	252.0
Paradise Recreation & Park District Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	47.5
County Of Yuba Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	12.5
Calaveras County Water District Wildfire Claims
Loss Contingencies [Line Items]
Settlement reached	$ 3.0