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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
Mar. 31, 2023
Dec. 31, 2022
Customer receivables, allowance for doubtful accounts $ 33,000,000 $ 31,000,000
Other receivables, allowance for doubtful accounts $ 3,000,000 $ 3,000,000
Common stock, shares authorized 1,800,000,000 1,800,000,000
Common stock, shares outstanding 836,000,000 835,000,000
Virginia Electric and Power Company    
Customer receivables, allowance for doubtful accounts $ 21,000,000 $ 21,000,000
Other receivables, allowance for doubtful accounts $ 1,000,000 $ 2,000,000
Common stock, shares authorized 500,000 500,000
Common stock, shares outstanding 274,723 274,723