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	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Income (loss) available for common shareholders, basic	$ 2,475	$ 2,242	$ 1,800
Income (loss) available for common shareholders diluted	$ 2,475	$ 2,242	$ 1,800
Weighted average common shares outstanding, basic (in shares)	2,141,000,000	2,064,000,000	1,987,000,000
Add incremental shares from assumed conversions:
Employee share-based compensation (in shares)	6,000,000	6,000,000	8,000,000
Equity Units (in shares)	0	68,000,000	137,000,000
Weighted average common share outstanding, diluted (in shares)	2,147,000,000	2,138,000,000	2,132,000,000
Total earnings (loss) per common share, diluted (in dollars per share)	$ 1.15	$ 1.05	$ 0.84
PG&E Corporation
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Income (loss) available for common shareholders, basic	$ 2,475	$ 2,242	$ 1,743
Income (loss) available for common shareholders diluted	$ 2,475	$ 2,242	$ 1,743
Weighted average common shares outstanding, basic (in shares)	2,141,000,000	2,064,000,000	2,235,000,000
Add incremental shares from assumed conversions:
Weighted average common share outstanding, diluted (in shares)	2,147,000,000	2,138,000,000	2,380,000,000
Total earnings (loss) per common share, diluted (in dollars per share)	$ 1.15	$ 1.05	$ 0.73
Number of shares sold (in shares)	477,743,590	477,743,590	477,743,590