CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Common Stock	Reinvested Earnings	Accumulated Other Comprehensive Income (Loss)	Total Shareholders’ Equity	Non- controlling Interest - Preferred Stock of Subsidiary	Pacific Gas & Electric Co	Pacific Gas & Electric Co Preferred Stock	Pacific Gas & Electric Co Common Stock	Pacific Gas & Electric Co Additional Paid-in Capital	Pacific Gas & Electric Co Reinvested Earnings	Pacific Gas & Electric Co Accumulated Other Comprehensive Income (Loss)	Pacific Gas & Electric Co Total Shareholders’ Equity
Beginning balance (in shares) at Dec. 31, 2018		520,338,710
Beginning balance at Dec. 31, 2018	$ 12,903	$ 12,910	$ (250)	$ (9)	$ 12,651	$ 252		$ 258	$ 1,322	$ 8,550	$ 2,826	$ (1)	$ 12,955
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	136		136		136						133		133
Other comprehensive loss	0			0	0
Common stock issued, net (in shares)		8,871,568
Common stock issued, net	85	$ 85			85
Stock-based compensation amortization	5	$ 5			5
Ending balance (in shares) at Mar. 31, 2019		529,210,278
Ending balance at Mar. 31, 2019	13,129	$ 13,000	(114)	(9)	12,877	252		258	1,322	8,550	2,959	(1)	13,088
Beginning balance (in shares) at Dec. 31, 2018		520,338,710
Beginning balance at Dec. 31, 2018	12,903	$ 12,910	(250)	(9)	12,651	252		258	1,322	8,550	2,826	(1)	12,955
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(2,413)						$ (2,417)
Ending balance (in shares) at Jun. 30, 2019		529,223,793
Ending balance at Jun. 30, 2019	10,594	$ 13,014	(2,663)	(9)	10,342	252		258	1,322	8,550	409	(1)	10,538
Beginning balance (in shares) at Mar. 31, 2019		529,210,278
Beginning balance at Mar. 31, 2019	13,129	$ 13,000	(114)	(9)	12,877	252		258	1,322	8,550	2,959	(1)	13,088
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(2,549)		(2,549)		(2,549)		$ (2,550)				(2,550)		(2,550)
Other comprehensive loss	0			0	0
Common stock issued, net (in shares)		13,515
Stock-based compensation amortization	14	$ 14			14
Ending balance (in shares) at Jun. 30, 2019		529,223,793
Ending balance at Jun. 30, 2019	$ 10,594	$ 13,014	(2,663)	(9)	10,342	252		258	1,322	8,550	409	(1)	10,538
Beginning balance (in shares) at Dec. 31, 2019	529,236,741	529,236,741					264,374,809
Beginning balance at Dec. 31, 2019	$ 5,388	$ 13,038	(7,892)	(10)	5,136	252		258	1,322	8,550	(4,796)	1	5,335
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	374		374		374						451		451
Other comprehensive loss	0			0	0
Common stock issued, net (in shares)		549,155
Stock-based compensation amortization	(3)	$ (3)			(3)
Ending balance (in shares) at Mar. 31, 2020		529,785,896
Ending balance at Mar. 31, 2020	$ 5,759	$ 13,035	(7,518)	(10)	5,507	252		258	1,322	8,550	(4,345)	1	5,786
Beginning balance (in shares) at Dec. 31, 2019	529,236,741	529,236,741					264,374,809
Beginning balance at Dec. 31, 2019	$ 5,388	$ 13,038	(7,892)	(10)	5,136	252		258	1,322	8,550	(4,796)	1	5,335
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (1,594)						$ (22)
Ending balance (in shares) at Jun. 30, 2020	529,793,355	529,793,355					264,374,809
Ending balance at Jun. 30, 2020	$ 3,801	$ 13,045	(9,486)	(10)	3,549	252		258	1,322	8,550	(4,818)	1	5,313
Beginning balance (in shares) at Mar. 31, 2020		529,785,896
Beginning balance at Mar. 31, 2020	5,759	$ 13,035	(7,518)	(10)	5,507	252		258	1,322	8,550	(4,345)	1	5,786
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,968)		(1,968)		(1,968)		$ (473)				(473)		(473)
Other comprehensive loss	0			0	0
Common stock issued, net (in shares)		7,459
Stock-based compensation amortization	$ 10	$ 10			10
Ending balance (in shares) at Jun. 30, 2020	529,793,355	529,793,355					264,374,809
Ending balance at Jun. 30, 2020	$ 3,801	$ 13,045	$ (9,486)	$ (10)	$ 3,549	$ 252		$ 258	$ 1,322	$ 8,550	$ (4,818)	$ 1	$ 5,313