EARNINGS PER SHARE (Reconciliation of PG&E Corporation's Income Available for Common Shareholders and Weighted Average Shares of Common Stock Outstanding for Calculating Diluted EPS) (Details) - USD ($) $ / shares in Units, $ in Millions					3 Months Ended						9 Months Ended
	Sep. 18, 2025	May 22, 2025	Feb. 20, 2025	Nov. 29, 2024	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Numerator:
Income available for common shareholders, basic					$ 823			$ 576			$ 1,951	$ 1,828
Mandatory Convertible Preferred Stock dividends					27	$ 28	$ 27	3	$ 4	$ 3
Income Available for Common Shareholders					$ 823			$ 576			$ 1,951	$ 1,828
Denominator:
Weighted average common shares outstanding, basic (in shares)					2,198,000,000			2,137,000,000			2,197,000,000	2,136,000,000
Weighted average common share outstanding, diluted (in shares)					2,281,000,000			2,143,000,000			2,202,000,000	2,142,000,000
Total income per common share:
Basic (in usd per share)					$ 0.37			$ 0.27			$ 0.89	$ 0.86
Diluted (in usd per share)					$ 0.37			$ 0.27			$ 0.89	$ 0.85
PG&E Corporation
Numerator:
Income available for common shareholders, basic					$ 823			$ 576			$ 1,951	$ 1,828
Mandatory Convertible Preferred Stock dividends	$ 55	$ 55	$ 55	$ 55	24			0			0	0
Income Available for Common Shareholders					$ 847			$ 576			$ 1,951	$ 1,828
Denominator:
Weighted average common shares outstanding, basic (in shares)					2,198,000,000			2,137,000,000			2,197,000,000	2,136,000,000
Dilutive effect of Employee stock-based compensation (in shares)					5,000,000			6,000,000			5,000,000	6,000,000
Dilutive effect of Mandatory Convertible Preferred Stock (in shares)					78,000,000			0			0	0
Weighted average common share outstanding, diluted (in shares)					2,281,000,000			2,143,000,000			2,202,000,000	2,142,000,000
Total income per common share:
Basic (in usd per share)					$ 0.37			$ 0.27			$ 0.89	$ 0.86
Diluted (in usd per share)					$ 0.37			$ 0.27			$ 0.89	$ 0.85
Number of shares sold (in shares)					477,743,590			477,743,590			477,743,590	477,743,590