BANKRUPTCY FILING (Narrative) (Details)			8 Months Ended	9 Months Ended
	Oct. 11, 2019 USD ($)	Sep. 23, 2019 USD ($)	Sep. 30, 2019 USD ($) structure	Sep. 30, 2019 USD ($) structure	Oct. 17, 2019 USD ($)	Sep. 22, 2019 USD ($)	Jan. 31, 2019 USD ($)
Debt Instrument [Line Items]
Amount to be paid for Subrogation Claims Settlement		$ 11,000,000,000.0
Subrogation claims, professional fees						$ 55,000,000
Compensation fund, maximum amount		8,400,000,000
Settlement claims payment		1,000,000,000.0
Equity offering - maximum			$ 14,000,000,000	$ 14,000,000,000
Reorganization, weighted average earning base rate			0.95	0.95
Reorganization, weighted average earnings			$ 48,000,000,000	$ 48,000,000,000
Aggregate liability for prepetition wildfire related claims, maximum			$ 18,900,000,000	$ 18,900,000,000
Number of days for effective date for confirmation order				60 days
Maximum number of structures that can be destroyed in wildfire in 2019 | structure			500	500
Asserted administrative expense claims, maximum			$ 250,000,000	$ 250,000,000
Maximum number of structures that can be destroyed in wildfire in 2020 | structure			500	500
Plan of reorganization, Wildfire Claim Cap, pending RSA		$ 17,900,000,000
Backstop commitment, initial commitment premium ( percentage)			0.0075	0.0075
Contractual interest expense on prepetition liabilities not recorded in financial statements			$ 666,000,000
Subsequent event
Debt Instrument [Line Items]
Debt commitment letters, required equity funding	$ 14,000,000,000.0
Debt commitment letters, required equity funding, preferred equity	2,000,000,000.0
Plan on reorganization, TCC Ad Hoc Noteholder Plan, proposed plan value					$ 14,500,000,000
Plan of reorganization, TCC Ad Hoc Noteholder Plan, Amount set aside in separate trust					1,000,000,000.0
Plan of reorganization, TCC Adhoc Noteholder Plan, proposed common stock issuance towards claims, value					$ 12,750,000,000
Plan of reorganization, TCC Adhoc Noteholder Plan, common stock issuable, percentage of post-emergence stock					40.60%
Plan of reorganization, TCC Adhoc Noteholder Plan, proposed common stock issuance for investors, value					$ 15,500,000,000
Plan of reorganization, TCC Adhoc Noteholder Plan, proposed common stock issuance for investors, percentage of post-emergence stock					59.30%
Bridge Loan | Subsequent event
Debt Instrument [Line Items]
Bridge financing facility - maximum	$ 34,350,000,000
Debt instrument, term (in days)	364 days
Bridge Loan | Secured debt | Subsequent event
Debt Instrument [Line Items]
Bridge financing facility - maximum	$ 27,350,000,000
Bridge Loan | Unsecured debt | Subsequent event
Debt Instrument [Line Items]
Bridge financing facility - maximum	$ 7,000,000,000.0
Unsecured debt | Subsequent event
Debt Instrument [Line Items]
Proposed debt issuance					$ 5,750,000,000
DIP Credit Agreement | Line of Credit | Secured debt
Debt Instrument [Line Items]
Amount arranged							$ 5,500,000,000
Pacific Gas & Electric Co
Debt Instrument [Line Items]
Payments for reorganization items				$ 145,000,000
Pacific Gas & Electric Co | Secured debt | Subsequent event
Debt Instrument [Line Items]
Proposed debt issuance					$ 8,000,000,000.0
PG&E Corporation
Debt Instrument [Line Items]
Payments for reorganization items				$ 13,000,000
Commitments to April 30, 2020
Debt Instrument [Line Items]
Backstop commitment, additional commitment premium			1.25%	1.25%
Commitments to June 30, 2020
Debt Instrument [Line Items]
Backstop commitment, additional commitment premium			2.50%	2.50%
Commitments to August 29, 2020
Debt Instrument [Line Items]
Backstop commitment, additional commitment premium			0.50%	0.50%