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Regulatory Assets and Liabilities (Schedule of Regulatory Liabilities) (Details) - USD ($) $ in Millions | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-current | [1] | $ 161 | $ 163 |
Regulatory liabilities-noncurrent |  | 2,745 | 2,622 | [2]
Total regulatory liabilities |  | 2,906 | 2,785 |
Deferred cost of fuel used in electric generation |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-current | [3] | 33 | 61 |
PIPP |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-current | [4] | 23 | 28 |
Provision for future cost of removal and AROs |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-noncurrent | [5] | 1,450 | 1,427 |
Nuclear decommissioning trust |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-noncurrent | [6] | 953 | 902 |
Derivatives |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-noncurrent | [7] | 70 | 69 |
Other |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-current |  | 105 | 74 |
Regulatory liabilities-noncurrent |  | 272 | 224 |
Virginia Electric and Power Company |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-current | [1] | 82 | 115 |
Regulatory liabilities-noncurrent |  | 2,064 | 1,962 | [8]
Total regulatory liabilities |  | 2,146 | 2,077 |
Virginia Electric and Power Company | Deferred cost of fuel used in electric generation |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-current | [3] | 33 | 61 |
Virginia Electric and Power Company | Provision for future cost of removal |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-noncurrent | [5] | 965 | 946 |
Virginia Electric and Power Company | Nuclear decommissioning trust |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-noncurrent | [6] | 953 | 902 |
Virginia Electric and Power Company | Derivatives |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-noncurrent | [7] | 70 | 69 |
Virginia Electric and Power Company | Other |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-current |  | 49 | 54 |
Regulatory liabilities-noncurrent |  | 76 | 45 |
Dominion Gas Holdings, LLC |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-current | [1] | 46 | 35 |
Regulatory liabilities-noncurrent | [9] | 237 | 219 |
Total regulatory liabilities |  | 283 | 254 |
Dominion Gas Holdings, LLC | PIPP |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-current | [4] | 23 | 28 |
Dominion Gas Holdings, LLC | Provision for future cost of removal and AROs |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-noncurrent | [5] | 175 | 174 |
Dominion Gas Holdings, LLC | Other |  |  |  |
Regulatory Liabilities [Line Items] |  |  |  |
Regulatory liabilities-current |  | 23 | 7 |
Regulatory liabilities-noncurrent |  | $ 62 | $ 45 |
[1] | Current regulatory liabilities are presented in other current liabilities in Dominion's, Virginia Power's and Dominion Gas' Consolidated Balance Sheets.
[2] | Dominion’s Consolidated Balance Sheet at December 31, 2016 has been derived from the audited Consolidated Balance Sheet at that date.
[3] | Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Dominion's and Virginia Power's generation operations.
[4] | Under PIPP, eligible customers can make reduced payments based on their ability to pay. The difference between the customer's total bill and the PIPP plan amount is deferred and collected or returned annually under the PIPP rate adjustment clause according to East Ohio tariff provisions.
[5] | Rates charged to customers by the Companies' regulated businesses include a provision for the cost of future activities to remove assets that are expected to be incurred at the time of retirement.
[6] | Primarily reflects a regulatory liability representing amounts collected from Virginia jurisdictional customers and placed in external trusts (including income, losses and changes in fair value thereon) for the future decommissioning of Virginia Power's utility nuclear generation stations, in excess of the related AROs.
[7] | For jurisdictions subject to cost-based rate regulation, changes in the fair value of derivative instruments result in the recognition of regulatory assets or regulatory liabilities as they are expected to be recovered from or refunded to customers.
[8] | Virginia Power’s Consolidated Balance Sheet at December 31, 2016 has been derived from the audited Consolidated Balance Sheet at that date.
[9] | Noncurrent regulatory liabilities are presented in other deferred credits and other liabilities in Dominion Gas' Consolidated Balance Sheets.

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