SCHEDULE I – CONDENSED FINANCIAL INFORMATION OF PARENT (Schedule of Condensed Income Statement and Comprehensive Income) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating expenses	$ (21,757)	$ (19,843)	$ (18,759)
Interest income	606	162	20
Interest expense	(2,850)	(1,917)	(1,601)
Other income, net	272	394	457
Reorganization Items	0	0	(11)
Income tax provision (benefit)	(1,557)	(1,338)	836
Income Available for Common Shareholders	2,242	1,800	(102)
Other Comprehensive Income (Loss)
Pension and other postretirement benefit plans obligations (net of taxes of $6, $8, and $3, at respective dates)	(16)	21	7
Total other comprehensive income (loss)	$ (8)	$ 15	$ 7
Weighted Average Common Shares Outstanding, Basic (in shares)	2,064,000,000	1,987,000,000	1,985,000,000
Weighted Average Common Shares Outstanding, Diluted (in shares)	2,138,000,000	2,132,000,000	1,985,000,000
Net earnings (loss) per common share, basic (in dollars per share)	$ 1.09	$ 0.91	$ (0.05)
Net earnings (loss) per common share, diluted (in dollars per share)	$ 1.05	$ 0.84	$ (0.05)
Pension and other postretirement benefit plans obligations, tax	$ 6	$ 8	$ 3
Treasury stock, shares at cost (in shares)	0	247,743,590
PG&E Corporation
Operating expenses	$ (165)	$ (193)	(124)
Interest income	13	3	0
Interest expense	(365)	(261)	(230)
Other income, net	(21)	(201)	(54)
Reorganization Items	0	0	1
Equity in earnings of subsidiaries	2,530	2,154	137
Income (loss) before income taxes	2,146	1,611	(152)
Income tax provision (benefit)	(96)	(132)	(64)
Income Available for Common Shareholders	2,242	1,743	(88)
Other Comprehensive Income (Loss)
Pension and other postretirement benefit plans obligations (net of taxes of $6, $8, and $3, at respective dates)	(16)	21	7
Total other comprehensive income (loss)	(16)	21	7
Comprehensive Income (Loss)	$ 2,226	$ 1,764	$ (81)
Weighted Average Common Shares Outstanding, Basic (in shares)	2,064,000,000	2,235,000,000	2,463,000,000
Weighted Average Common Shares Outstanding, Diluted (in shares)	2,138,000,000	2,380,000,000	2,463,000,000
Net earnings (loss) per common share, basic (in dollars per share)	$ 1.09	$ 0.78	$ (0.05)
Net earnings (loss) per common share, diluted (in dollars per share)	$ 1.05	$ 0.73	$ (0.05)
Pension and other postretirement benefit plans obligations, tax	$ 6	$ 8	$ 3
PG&E Corporation | Administrative service revenue
Administrative service revenue	$ 154	$ 109	$ 118