WILDFIRE-RELATED CONTINGENCIES (Wildfire-Related Securities Class Action Litigation) (Details)	3 Months Ended
	Jul. 12, 2021 claim	Mar. 17, 2021 objection	Feb. 22, 2019 offering	Dec. 31, 2018 lawsuit	Jun. 30, 2018 lawsuit
Loss Contingencies [Line Items]
Number of omnibus objection (objection) | objection		10
Wildfire-Related Class Action
Loss Contingencies [Line Items]
Number of lawsuits filed against company (lawsuit)					2
Number of public offerings of notes with complaints against underwriters (offering) | offering			4
Satisfaction of HoldCo Rescission or Damage Claims and Subordinated Debt
Loss Contingencies [Line Items]
Number of lawsuits filed against company (lawsuit)				3
Satisfaction of HoldCo Rescission or Damage Claims and Subordinated Debt | Subsequent event
Loss Contingencies [Line Items]
Number of subordinated claim (claim) | claim	2