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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Customer receivables, allowance for doubtful accounts |  | $ 17 | $ 18
Other receivables, allowance for doubtful accounts |  | $ 2 | $ 2
Common stock, shares authorized |  | 1,000,000,000 | 1,000,000,000
Common stock, shares outstanding |  | 645,000,000 | 628,000,000
Virginia Electric and Power Company |  |  |
Customer receivables, allowance for doubtful accounts |  | $ 10 | $ 10
Other receivables, allowance for doubtful accounts |  | $ 1 | $ 1
Common stock, shares authorized |  | 500,000 | 500,000
Common stock, shares outstanding |  | 274,723 | 274,723
Dominion Energy Gas Holdings, LLC |  |  |
Customer receivables, allowance for doubtful accounts | [1] | $ 1 | $ 1
Other receivables, allowance for doubtful accounts | [1] | $ 1 | $ 1
[1] | See Note 24 for amounts attributable to related parties.

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