CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Allowance for doubtful accounts	$ 212	$ 146
Customers, VIE	1,610	1,630
Allowance for doubtful accounts, customers, VIE	211	143
Accrued unbilled revenue	897	959
Long-term debt, VIE	$ 650	$ 1,000
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	3,600,000,000	3,600,000,000
Common stock, shares outstanding (in shares)	1,985,105,703	1,984,678,673
Pacific Gas & Electric Co (Utility)
Allowance for doubtful accounts	$ 212	$ 146
Customers, VIE	1,610	1,630
Allowance for doubtful accounts, customers, VIE	211	143
Accrued unbilled revenue	897	959
Long-term debt, VIE	$ 650	$ 1,000
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