CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Revenues
Total operating revenues	$ 18,469	$ 17,129	$ 16,759
Operating Expenses
Operating and maintenance	8,684	8,725	7,153
Wildfire-related claims, net of insurance recoveries	251	11,435	11,771
Wildfire fund expense	413	0	0
Depreciation, amortization, and decommissioning	3,468	3,234	3,036
Total operating expenses	16,714	27,223	26,459
Operating Income (Loss)	1,755	(10,094)	(9,700)
Interest income	39	82	76
Interest expense	(1,260)	(934)	(929)
Other income, net	483	250	424
Reorganization items, net	(1,959)	(346)	0
Loss Before Income Taxes	(942)	(11,042)	(10,129)
Income tax provision (benefit)	362	(3,400)	(3,292)
Net Loss	(1,304)	(7,642)	(6,837)
Preferred stock dividend requirement of subsidiary	14	14	14
Loss Attributable to Common Shareholders	$ (1,318)	$ (7,656)	$ (6,851)
Weighted Average Common Shares Outstanding, Basic (in shares)	1,257	528	517
Weighted Average Common Shares Outstanding, Diluted (in shares)	1,257	528	517
Net Loss Per Common Share, Basic (in dollars per share)	$ (1.05)	$ (14.50)	$ (13.25)
Net Loss Per Common Share, Diluted (in dollars per share)	$ (1.05)	$ (14.50)	$ (13.25)
Pacific Gas & Electric Co (Utility)
Operating Revenues
Total operating revenues	$ 18,469	$ 17,129	$ 16,760
Operating Expenses
Operating and maintenance	8,707	8,750	7,153
Wildfire-related claims, net of insurance recoveries	251	11,435	11,771
Wildfire fund expense	413	0	0
Depreciation, amortization, and decommissioning	3,469	3,233	3,036
Total operating expenses	16,738	27,247	26,459
Operating Income (Loss)	1,731	(10,118)	(9,699)
Interest income	39	82	74
Interest expense	(1,111)	(912)	(914)
Other income, net	470	239	426
Reorganization items, net	(310)	(320)	0
Loss Before Income Taxes	819	(11,029)	(10,113)
Income tax provision (benefit)	408	(3,407)	(3,295)
Net Loss	411	(7,622)	(6,818)
Preferred stock dividend requirement	14	14	14
Loss Attributable to Common Shareholders	397	(7,636)	(6,832)
Electric
Operating Revenues
Total operating revenues	13,858	12,740	12,713
Operating Expenses
Cost of goods	3,116	3,095	3,828
Electric | Pacific Gas & Electric Co (Utility)
Operating Revenues
Total operating revenues	13,858	12,740	12,713
Operating Expenses
Cost of goods	3,116	3,095	3,828
Natural gas
Operating Revenues
Total operating revenues	4,611	4,389	4,046
Operating Expenses
Cost of goods	782	734	671
Natural gas | Pacific Gas & Electric Co (Utility)
Operating Revenues
Total operating revenues	4,611	4,389	4,047
Operating Expenses
Cost of goods	$ 782	$ 734	$ 671