DEBT (Schedule of Long-term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 04, 2023	Nov. 08, 2023	Jun. 05, 2023	Jan. 06, 2023	Dec. 31, 2022	Nov. 12, 2021
Debt [Line Items]
Less: current portion, net of unamortized discount and debt issuance costs	$ (1,376)					$ (2,268)
Long-term debt, net	50,975					47,742
Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Less: current portion, net of unamortized discount and debt issuance costs	(1,376)					(2,241)
PG&E Corporation
Debt [Line Items]
Less: current portion, net of unamortized discount and debt issuance costs	0					(27)
New Debt | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Less: current portion, net of unamortized discount and debt issuance costs	(400)					0
Long-term debt, net	46,376					43,155
New Debt | PG&E Corporation
Debt [Line Items]
Less: current portion, net of unamortized discount and debt issuance costs	0					(28)
Unamortized discount and debt issuance costs, net	(51)					(66)
Long-term debt, net	4,599					4,587
Term Loan B, Stated Maturity 2027 | PG&E Corporation
Debt [Line Items]
Long-term debt, gross	$ 500					$ 2,681
Term Loan B, Stated Maturity 2027 | PG&E Corporation | LIBOR
Debt [Line Items]
Stated interest rate	7.85%
Term Loan B, Stated Maturity 2027 | PG&E Corporation | SOFR
Debt [Line Items]
Stated interest rate						7.44%
Convertible Notes Due 2027 | PG&E Corporation
Debt [Line Items]
Stated interest rate	4.25%
Long-term debt, gross	$ 2,150					$ 0
Convertible Notes Due 2027 | PG&E Corporation | Secured Debt
Debt [Line Items]
Stated interest rate		4.25%
Recovery Bonds		$ 2,150
Long-term debt, net	$ 2,120	$ 2,120
Senior Notes Due 2028 | PG&E Corporation
Debt [Line Items]
Stated interest rate	5.00%
Long-term debt, gross	$ 1,000					1,000
Senior Notes Due 2030 | PG&E Corporation
Debt [Line Items]
Stated interest rate	5.25%
Long-term debt, gross	$ 1,000					1,000
First Mortgage Bonds | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Less: current portion, net of unamortized discount and debt issuance costs	(800)					(2,072)
Unamortized discount and debt issuance costs, net	(246)					(195)
Long-term debt, net	35,831					32,135
First Mortgage Bonds, Stated Maturity 2023 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Stated interest rate				3.25%
Long-term debt, gross	$ 0					2,075
Recovery Bonds				$ 375
First Mortgage Bonds, Stated Maturity 2023 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	1.70%
First Mortgage Bonds, Stated Maturity 2023 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	4.25%
First Mortgage Bonds, Stated Maturity 2024 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 800					1,800
First Mortgage Bonds, Stated Maturity 2024 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	3.40%
First Mortgage Bonds, Stated Maturity 2024 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	3.75%
First Mortgage Bonds, Stated Maturity 2025 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 1,925					1,925
First Mortgage Bonds, Stated Maturity 2025 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	3.45%
First Mortgage Bonds, Stated Maturity 2025 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	4.95%
First Mortgage Bonds, Stated Maturity 2026 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 2,551					2,551
First Mortgage Bonds, Stated Maturity 2026 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	2.95%
First Mortgage Bonds, Stated Maturity 2026 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	3.15%
First Mortgage Bonds, Stated Maturity 2027 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 3,000					3,000
First Mortgage Bonds, Stated Maturity 2027 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	2.10%
First Mortgage Bonds, Stated Maturity 2027 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	5.45%
First Mortgage Bonds, Stated Maturity 2028 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 1,975					1,975
First Mortgage Bonds, Stated Maturity 2028 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	3.00%
First Mortgage Bonds, Stated Maturity 2028 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	4.65%
First Mortgage Bonds, Stated Maturity 2029 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Stated interest rate				6.10%
Long-term debt, gross	$ 1,250					400
Recovery Bonds				$ 850
First Mortgage Bonds, Stated Maturity 2029 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	4.20%
First Mortgage Bonds, Stated Maturity 2029 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	6.10%
First Mortgage Bonds, Stated Maturity 2030 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Stated interest rate	4.55%
Long-term debt, gross	$ 3,100					3,100
First Mortgage Bonds, Stated Maturity 2031 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 3,000					3,000
First Mortgage Bonds, Stated Maturity 2031 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	2.50%
First Mortgage Bonds, Stated Maturity 2031 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	3.25%
First Mortgage Bonds, Stated Maturity 2032 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 1,050					1,050
First Mortgage Bonds, Stated Maturity 2032 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	4.40%
First Mortgage Bonds, Stated Maturity 2032 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	5.90%
First Mortgage Bonds Due 2033 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Stated interest rate				6.40%	6.15%
Long-term debt, gross	$ 1,900					0
Recovery Bonds				$ 1,150	$ 750
First Mortgage Bonds Due 2033 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	6.15%
First Mortgage Bonds Due 2033 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	6.40%
First Mortgage Bonds Due 2034 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Stated interest rate	6.95%		6.95%
Long-term debt, gross	$ 800					0
Recovery Bonds			$ 800
First Mortgage Bonds, Stated Maturity 2040 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 2,951					2,951
First Mortgage Bonds, Stated Maturity 2040 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	3.30%
First Mortgage Bonds, Stated Maturity 2040 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	4.50%
First Mortgage Bonds, Stated Maturity 2041 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 700					700
First Mortgage Bonds, Stated Maturity 2041 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	4.20%
First Mortgage Bonds, Stated Maturity 2041 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	4.50%
First Mortgage Bonds, Stated Maturity 2042 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 750					750
First Mortgage Bonds, Stated Maturity 2042 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	3.75%
First Mortgage Bonds, Stated Maturity 2042 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	4.45%
First Mortgage Bonds, Stated Maturity 2043 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Stated interest rate	4.60%
Long-term debt, gross	$ 375					375
First Mortgage Bonds, Stated Maturity 2044 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Stated interest rate	4.75%
Long-term debt, gross	$ 675					675
First Mortgage Bonds, Stated Maturity 2045 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 600					600
First Mortgage Bonds, Stated Maturity 2045 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	4.30%
First Mortgage Bonds, Stated Maturity 2046 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 1,050					1,050
First Mortgage Bonds, Stated Maturity 2046 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	4.00%
First Mortgage Bonds, Stated Maturity 2046 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	4.25%
First Mortgage Bonds, Stated Maturity 2047 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 850					850
First Mortgage Bonds, Stated Maturity 2047 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	3.95%
First Mortgage Bonds, Stated Maturity 2050 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 5,025					5,025
First Mortgage Bonds, Stated Maturity 2050 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	3.50%
First Mortgage Bonds, Stated Maturity 2050 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	4.95%
First Mortgage Bonds, Stated Maturity 2052 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Stated interest rate	5.25%
Long-term debt, gross	$ 550					550
First Mortgage Bonds, Stated Maturity 2053 | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	$ 2,000					0
First Mortgage Bonds, Stated Maturity 2053 | Pacific Gas & Electric Co (Utility) | Minimum
Debt [Line Items]
Stated interest rate	6.70%
First Mortgage Bonds, Stated Maturity 2053 | Pacific Gas & Electric Co (Utility) | Maximum
Debt [Line Items]
Stated interest rate	6.75%
Recovery Bonds | Secured Debt
Debt [Line Items]
Long-term debt, gross	$ 9,124					9,292
Less: current portion, net of unamortized discount and debt issuance costs	(176)					(168)
Recovery Bonds	1,800					1,800	$ 860
DWR Loan
Debt [Line Items]
Long-term debt, net	98					312
Receivables Securitization Program | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Long-term debt, gross	1,499					1,200
Long-term debt, net	$ 1,499					$ 1,184
Receivables Securitization Program | Pacific Gas & Electric Co (Utility) | SOFR
Debt [Line Items]
Stated interest rate	6.75%					5.10%
2 Year Term Loan | Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Term Loan	$ 400					$ 400
2 Year Term Loan | Pacific Gas & Electric Co (Utility) | SOFR
Debt [Line Items]
Stated interest rate	6.60%					5.71%