CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts	$ 146	$ 43
Customers, VIE	1,630	0
Allowance for doubtful accounts, customers, VIE	143	0
Accrued unbilled revenue	959	0
Short-term borrowings, VIE	$ 1,000	$ 0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	3,600,000,000	800,000,000
Common stock, shares outstanding (in shares)	1,984,678,673	529,236,741
Pacific Gas & Electric Co (Utility)
Allowance for doubtful accounts	$ 146	$ 43
Customers, VIE	1,630	0
Allowance for doubtful accounts, customers, VIE	143	0
Accrued unbilled revenue	959	0
Short-term borrowings, VIE	$ 1,000	$ 0
Common stock, par value (in dollars per share)	$ 5	$ 5
Common stock, shares authorized (in shares)	800,000,000	800,000,000
Common stock, shares outstanding (in shares)	264,374,809	264,374,809