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Regulatory Assets and Liabilities (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Regulatory Assets and Liablities [Line Items]    
Deferred cost of fuel used in electric generation $ 180 [1] $ 0 [1]
Deferred rate adjustment clause costs 105 [2] 89 [2]
Nuclear fuel outages 48 [3] 0 [3]
Unrecovered gas costs 17 [4] 50 [4]
Derivatives 5 [5] 16 [5]
Other 47 62
Regulatory assets current 402 [6] 217 [6]
Unrecognized pension and other postretirement benefit costs 675 [7] 706 [7]
Deferred rate adjustment clause costs 246 [2] 287 [2]
Income taxes recoverable through future rates 139 [8] 155 [8]
Derivatives 59 16
Deferred cost of fuel used in electric generation 19 [1] 1 [1]
Other 99 63
Regulatory assets-non-current 1,237 1,228 [9]
Total regulatory assets 1,639 1,445
PIPP 76 [10] 76 [10]
Other 52 52
Regulatory liabilities current 128 [11] 128 [11]
Provision for future cost of removal and AROs 1,064 [12] 1,028 [12]
Decommissioning trust 772 [13] 693 [13]
Deferred cost of fuel used in electric generation 28 [1] 90 [1]
Other 172 190
Regulatory liabilities-non-current 2,036 2,001 [9]
Total regulatory liabilities 2,164 2,129
Virginia Electric and Power Company
   
Regulatory Assets and Liablities [Line Items]    
Deferred cost of fuel used in electric generation 180 [1] 0 [1]
Deferred rate adjustment clause costs 96 [2] 62 [2]
Nuclear fuel outages 48 [3] 0 [3]
Derivatives 5 [5] 16 [5]
Other 44 50
Regulatory assets current 373 128 [14]
Deferred rate adjustment clause costs 177 [2] 227 [2]
Deferred cost of fuel used in electric generation (19) [1] (1) [1]
Income taxes recoverable through future rates 107 [8] 124 [8]
Derivatives 59 [5] 16 [5]
Other 60 49
Regulatory assets-non-current 422 417 [14]
Total regulatory assets 795 545
Other 47 41
Regulatory liabilities current 47 [11] 41 [11]
Provision for future cost of removal 839 [12] 807 [12]
Decommissioning trust 772 [13] 693 [13]
Deferred cost of fuel used in electric generation 28 [1] 90 [1]
Other 7 7
Regulatory liabilities-non-current 1,646 1,597 [14]
Total regulatory liabilities 1,693 1,638
Dominion Gas Holdings, LLC
   
Regulatory Assets and Liablities [Line Items]    
Deferred rate adjustment clause costs 9 [2] 27 [2]
Unrecovered gas costs 7 [4] 40 [4]
Bad debt tracker 0 [15] 11 [15]
Other 1 1
Regulatory assets current 17 [6] 79 [6]
Unrecognized pension and other postretirement benefit costs 188 [7] 194 [7]
Deferred rate adjustment clause costs 69 [2] 59 [2]
Income taxes recoverable through future rates 24 [8] 24 [8]
Other postretirement benefit costs 0 [16] 7 [16]
Other 32 1
Regulatory assets-non-current 313 285 [17]
Total regulatory assets 330 364
PIPP 76 [10] 76 [10]
Other 2 3
Regulatory liabilities current 78 [11] 79 [11]
Provision for future cost of removal and AROs 178 [12] 177 [12]
Unrecognized pension and other postretirement benefit costs 0 [7] 18 [7]
Other 18 8
Regulatory liabilities-non-current 196 [18] 203 [18]
Total regulatory liabilities $ 274 $ 282
[1] Primarily reflects deferred fuel expenses for the Virginia jurisdiction of Virginia Power's generation operations.
[2] Reflects deferrals under the electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects for Virginia Power. Reflects deferrals of costs associated with certain current and prospective rider projects for Dominion Gas. See Note 12 for more information.
[3] Legislation enacted in Virginia in April 2014 requires Virginia Power to defer operation and maintenance costs incurred in connection with the refueling of any nuclear-powered generating plant. These deferred costs will be amortized over the refueling cycle, not to exceed 18 months.
[4] Reflects unrecovered gas costs at regulated gas operations, which are recovered through filings with the applicable regulatory authority.
[5] 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.
[6] Current regulatory assets are presented in other current assets in Dominion's and Dominion Gas' Consolidated Balance Sheets.
[7] Represents unrecognized pension and other postretirement employee benefit costs expected to be recovered through future rates generally over the expected remaining service period of plan participants by certain of Dominion's rate-regulated subsidiaries.
[8] Amounts to be recovered through future rates to pay income taxes that become payable when rate revenue is provided to recover AFUDC-equity and depreciation of property, plant and equipment for which deferred income taxes were not recognized for ratemaking purposes, including amounts attributable to tax rate changes.
[9] Dominion’s Consolidated Balance Sheet at December 31, 2013 has been derived from the audited Consolidated Financial Statements at that date.
[10] 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 rider according to East Ohio tariff provisions.
[11] Current regulatory liabilities are presented in other current liabilities in the Companies' Consolidated Balance Sheets.
[12] 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.
[13] 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.
[14] Virginia Power’s Consolidated Balance Sheet at December 31, 2013 has been derived from the audited Consolidated Financial Statements at that date.
[15] Represents East Ohio's deferrals for the UEX Rider which are recovered through rates which are filed annually. Most of East Ohio's bad debt expense is recovered either through the UEX Rider or the PIPP Rider.
[16] Primarily reflects costs recognized in excess of amounts included in regulated rates charged by Dominion Gas' regulated gas operations before rates were updated to reflect a change in accounting method for other postretirement benefit costs.
[17] Dominion Gas’ Consolidated Balance Sheet at December 31, 2013 has been derived from the audited Consolidated Financial Statements at that date.
[18] Noncurrent regulatory liabilities are presented in other deferred credits and other liabilities in Dominion Gas' Consolidated Balance Sheets.