Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Customer receivables, allowance for doubtful accounts	$ 42	$ 18
Other receivables, allowance for doubtful accounts	$ 3	$ 3
Common stock, shares authorized	1,800,000,000	1,800,000,000
Common stock, shares outstanding	806,000,000	838,000,000
Virginia Electric and Power Company
Customer receivables, allowance for doubtful accounts	$ 23	$ 9
Other receivables, allowance for doubtful accounts	$ 2	$ 2
Common stock, shares authorized	500,000	500,000
Common stock, shares outstanding	274,723	274,723