CONDENSED CONSOLIDATED STATEMENTS OF EQUITY, UTILITY - USD ($) $ in Millions	Total	Pacific Gas & Electric Co (Utility)	Total Shareholders' Equity	Total Shareholders' Equity Pacific Gas & Electric Co (Utility)	Preferred Stock Pacific Gas & Electric Co (Utility)	Common Stock	Common Stock Pacific Gas & Electric Co (Utility)	Additional Paid-in Capital Pacific Gas & Electric Co (Utility)	Reinvested Earnings	Reinvested Earnings Pacific Gas & Electric Co (Utility)	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Pacific Gas & Electric Co (Utility)
Beginning balance at Dec. 31, 2021	$ 21,223		$ 20,971	$ 25,610	$ 258	$ 35,129	$ 1,322	$ 28,286	$ (9,284)	$ (4,247)	$ (20)	$ (9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	478		478	530					478	530
Other comprehensive income (loss)				1								1
Preferred stock dividend requirement of subsidiary in arrears	(59)		(59)	(59)					(59)	(59)
Preferred stock dividend requirement				(2)						(2)
Ending balance at Mar. 31, 2022	21,644		21,392	26,080	258	34,726	1,322	28,286	(8,867)	(3,778)	(20)	(8)
Beginning balance at Dec. 31, 2021	21,223		20,971	25,610	258	35,129	1,322	28,286	(9,284)	(4,247)	(20)	(9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,297	$ 1,620
Other comprehensive income (loss)	(17)	(16)
Ending balance at Sep. 30, 2022	22,486		22,234	26,723	258	34,164	1,322	28,713	(8,055)	(3,545)	(37)	(25)
Beginning balance at Mar. 31, 2022	21,644		21,392	26,080	258	34,726	1,322	28,286	(8,867)	(3,778)	(20)	(8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	360		360	600					360	600
Other comprehensive income (loss)	(5)		(5)	(5)							(5)	(5)
Equity contribution				212				212
Common stock dividend				(425)						(425)
Preferred stock dividend requirement				(4)						(4)
Ending balance at Jun. 30, 2022	22,019		21,767	26,458	258	34,141	1,322	28,498	(8,511)	(3,607)	(25)	(13)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	459	490	459	490					459	490
Other comprehensive income (loss)	(12)	(12)	(12)	(12)							(12)	(12)
Equity contribution				215				215
Common stock dividend				(425)						(425)
Preferred stock dividend requirement				(3)						(3)
Ending balance at Sep. 30, 2022	22,486		22,234	26,723	258	34,164	1,322	28,713	(8,055)	(3,545)	(37)	(25)
Beginning balance at Dec. 31, 2022	23,075		22,823	27,484	258	32,887	1,322	29,280	(7,542)	(3,368)	(5)	(8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	572		572	626					572	626
Other comprehensive income (loss)	5		5	6							5	6
Equity contribution				310				310
Common stock dividend				(425)						(425)
Preferred stock dividend requirement				(3)						(3)
Ending balance at Mar. 31, 2023	23,586		23,334	27,998	258	32,214	1,322	29,590	(6,973)	(3,170)	0	(2)
Beginning balance at Dec. 31, 2022	23,075		22,823	27,484	258	32,887	1,322	29,280	(7,542)	(3,368)	(5)	(8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,333	1,526
Other comprehensive income (loss)	3	4
Ending balance at Sep. 30, 2023	24,384		24,132	28,519	258	31,041	1,322	30,120	(6,219)	(3,177)	(2)	(4)
Beginning balance at Mar. 31, 2023	23,586		23,334	27,998	258	32,214	1,322	29,590	(6,973)	(3,170)	0	(2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	410		410	480					410	480
Equity contribution				250				250
Common stock dividend				(450)						(450)
Preferred stock dividend requirement				(4)						(4)
Ending balance at Jun. 30, 2023	24,015		23,763	28,274	258	31,628	1,322	29,840	(6,567)	(3,144)	0	(2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	351	420	351	420					351	420
Other comprehensive income (loss)	(2)	$ (2)	(2)	(2)							(2)	(2)
Equity contribution				280				280
Common stock dividend				(450)						(450)
Preferred stock dividend requirement				(3)						(3)
Ending balance at Sep. 30, 2023	$ 24,384		$ 24,132	$ 28,519	$ 258	$ 31,041	$ 1,322	$ 30,120	$ (6,219)	$ (3,177)	$ (2)	$ (4)