PREFERRED STOCK (Details)							3 Months Ended	12 Months Ended
	May 15, 2025 USD ($)	Dec. 05, 2024 USD ($) $ / shares shares	Nov. 29, 2024 USD ($)	Sep. 19, 2024 USD ($)	May 16, 2024 USD ($)	Feb. 13, 2024 USD ($)	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares	Dec. 31, 2022 USD ($)	Jan. 31, 2022 USD ($)
Preferred Stock [Line Items]
Preferred Stock issued, net								$ 1,579,000,000
Investment plan, term								5 years
Cumulative and unpaid dividends											$ 59,000,000
Preferred stock dividend requirement								$ 37,000,000	$ 14,000,000	$ 13,000,000
6.000% Series A Mandatory Convertible Preferred Stock, no par value
Preferred Stock [Line Items]
Preferred stock, shares issued (in shares) | shares		32,200,000
Preferred stock interest rate		6.00%
Preferred stock, par value (in dollars per share) | $ / shares		$ 50.00
Preferred Stock issued, net		$ 1,600,000,000
Dividends accumulated, amount per share (in dollars per shares)		$ 0.7167
6.000% Series A Mandatory Convertible Preferred Stock, no par value | Forecast
Preferred Stock [Line Items]
Dividends accumulated, amount per share (in dollars per shares)	$ 0.75
6.000% Series A Mandatory Convertible Preferred Stock, no par value | Minimum
Preferred Stock [Line Items]
Preferred stock, convertible, conversion ratio		1.9465
6.000% Series A Mandatory Convertible Preferred Stock, no par value | Maximum
Preferred Stock [Line Items]
Preferred stock, convertible, conversion ratio		2.4331
Pacific Gas & Electric Co (Utility)
Preferred Stock [Line Items]
Preferred stock dividends paid								14,000,000	14,000,000	70,000,000
Preferred stock dividend requirement			$ 3,500,000	$ 3,500,000	$ 3,500,000	$ 3,500,000		$ 14,000,000	$ 14,000,000	$ 14,000,000
Pacific Gas & Electric Co (Utility) | Minimum
Preferred Stock [Line Items]
Redemption price (in dollars per share) | $ / shares							$ 25.75	$ 25.75	$ 25.75
Pacific Gas & Electric Co (Utility) | Maximum
Preferred Stock [Line Items]
Redemption price (in dollars per share) | $ / shares							$ 27.25	$ 27.25	$ 27.25
Pacific Gas & Electric Co (Utility) | Nonredeemable Preferred Stock
Preferred Stock [Line Items]
Nonredeemable preferred stock outstanding							$ 145,000,000	$ 145,000,000	$ 145,000,000
Preferred stock dividends per share, low range (in dollars per share) | $ / shares								$ 1.25
Preferred stock dividends per share, high range (in dollars per share) | $ / shares								$ 1.50
Pacific Gas & Electric Co (Utility) | Nonredeemable Preferred Stock | Minimum
Preferred Stock [Line Items]
Preferred stock interest rate								5.00%
Pacific Gas & Electric Co (Utility) | Nonredeemable Preferred Stock | Maximum
Preferred Stock [Line Items]
Preferred stock interest rate								6.00%
Pacific Gas & Electric Co (Utility) | Redeemable Preferred Stock
Preferred Stock [Line Items]
Redeemable preferred stock outstanding							$ 113,000,000	$ 113,000,000	$ 113,000,000
Preferred stock dividends per share, low range (in dollars per share) | $ / shares								$ 1.09
Preferred stock dividends per share, high range (in dollars per share) | $ / shares								$ 1.25
Pacific Gas & Electric Co (Utility) | Redeemable Preferred Stock | Minimum
Preferred Stock [Line Items]
Preferred stock interest rate									4.36%
Pacific Gas & Electric Co (Utility) | Redeemable Preferred Stock | Maximum
Preferred Stock [Line Items]
Preferred stock interest rate									5.00%
PG&E Corporation
Preferred Stock [Line Items]
Preferred stock, shares authorized (in shares) | shares							400,000,000	400,000,000
Preferred stock dividend requirement			$ 55,000,000	$ 21,000,000	$ 21,000,000	$ 21,000,000
PG&E Corporation | 6.000% Series A Mandatory Convertible Preferred Stock, no par value
Preferred Stock [Line Items]
Preferred stock, dividends declared (in dollars per share) | $ / shares							$ 0.7167
$25 Par Value | Pacific Gas & Electric Co (Utility)
Preferred Stock [Line Items]
Preferred stock, shares authorized (in shares) | shares							75,000,000	75,000,000
Preferred stock, par value (in dollars per share) | $ / shares							$ 25	$ 25
$100 Par Value | Pacific Gas & Electric Co (Utility)
Preferred Stock [Line Items]
Preferred stock, shares authorized (in shares) | shares							10,000,000	10,000,000
Preferred stock, par value (in dollars per share) | $ / shares							$ 100	$ 100
Preferred stock, shares outstanding (in shares) | shares							0	0