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		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Income available for common shareholders, basic	$ 521	$ 520	$ 1,128	$ 1,252
Income available for common shareholders, diluted	$ 521	$ 520	$ 1,128	$ 1,252
Weighted average common shares outstanding, basic (in shares)	2,198,000,000	2,137,000,000	2,196,000,000	2,136,000,000
Add incremental shares from assumed conversions:
Employee share-based compensation (in shares)	5,000,000	5,000,000	5,000,000	5,000,000
Weighted average common share outstanding, diluted (in shares)	2,203,000,000	2,142,000,000	2,201,000,000	2,141,000,000
Total income per common share, diluted (in dollars per share)	$ 0.24	$ 0.24	$ 0.51	$ 0.58
PG&E Corporation
Add incremental shares from assumed conversions:
Number of shares sold (in shares)	477,743,590	477,743,590	477,743,590	477,743,590