Acquisitions and Dispositions	3 Months Ended
Mar. 31, 2015
Business Combinations, Discontinued Operations and Disposal Groups [Abstract]
Acquisitions and Dispositions	Acquisitions and Dispositions Dominion Acquisition of Solar Projects In March 2014, Dominion completed the acquisition of 100% of the equity interests of six solar development projects in California from Recurrent Energy Development Holdings, LLC for approximately $50 million in cash. The projects cost approximately $446 million to construct, including the initial acquisition cost. The facilities, which began commercial operations in the fourth quarter of 2014, generate approximately 139 MW. The purchase price for this acquisition was allocated to Property, Plant and Equipment. In April 2015, Dominion completed the acquisition of 100% of the equity interests of a solar project in California from EC&R NA Solar PV, LLC for approximately $66 million in cash. The project is expected to cost approximately $69 million once constructed, including the initial acquisition cost. Upon completion, the facility is expected to generate approximately 20 MW. In April 2015, Dominion also completed the acquisition of 100% of the equity interests of a solar project in California from EDF Renewable Development, Inc. for approximately $106 million in cash. The projects owned by the acquired company are expected to cost approximately $111 million once constructed, including the initial acquisition cost. Upon completion, the facilities are expected to generate approximately 24 MW. The allocation of the purchase price to individual assets for these investments is under evaluation by management and has not been finalized. Long-term power purchase, interconnection and operation and maintenance agreements have been executed for each of the projects. Dominion expects to claim federal investment tax credits on the projects. Acquisition of DCGT In January 2015, Dominion completed the acquisition of 100% of the equity interests of DCGT from SCANA Corporation for approximately $495 million in cash, subject to final working capital adjustments. DCGT owns and operates nearly 1,500 miles of FERC-regulated interstate natural gas pipeline in South Carolina and southeastern Georgia. This acquisition supports Dominion’s natural gas expansion into the Southeast. The allocation of the purchase price is currently being evaluated and has preliminarily resulted in approximately $277 million of net property, plant and equipment, $250 million of goodwill, of which approximately $225 million is expected to be deductible for income tax purposes, and approximately $38 million of regulatory liabilities. The goodwill reflects the value associated with enhancing Dominion's regulated gas position, economic value attributable to future expansion projects as well as increased opportunities for synergies. The acquired assets of DCGT are included in the Dominion Energy operating segment. On March 24, 2015, DCGT converted to a limited liability company under the laws of South Carolina and changed its name from Carolina Gas Transmission Corporation to DCGT. On April 1, 2015, Dominion contributed 100% of the issued and outstanding membership interests of DCGT to Dominion Midstream in exchange for total consideration of $495 million, subject to final working capital adjustments. Total consideration to Dominion consisted of the issuance of a two-year, approximately $295 million senior unsecured promissory note payable by Dominion Midstream at an annual interest rate of 0.6%, and 5,112,139 common units, valued at $200 million, representing limited partner interests in Dominion Midstream. The amount of the promissory note is subject to change to correspond with any working capital adjustments. The number of units was based on the volume weighted average trading price of Dominion Midstream's common units for the ten trading days prior to April 1, 2015, or $39.12 per unit. Since Dominion consolidates Dominion Midstream for financial reporting purposes, this transaction was eliminated upon consolidation and did not impact Dominion's financial position or cash flow. Sale of Electric Retail Energy Marketing Business In March 2014, Dominion completed the sale of its electric retail energy marketing business. The proceeds were approximately $187 million, net of transaction costs. The sale resulted in a gain, subject to post-closing adjustments, of approximately $100 million ($57 million after-tax) net of a $31 million write-off of goodwill, and is included in other operations and maintenance expense in Dominion's Consolidated Statements of Income. The sale of the electric retail energy marketing business did not qualify for discontinued operations classification. Dominion Gas Assignments of Marcellus Acreage In December 2013, DTI closed an agreement with a natural gas producer to convey over time approximately 79,000 acres of Marcellus Shale development rights underneath one of its natural gas storage fields. The agreement provided for payments to DTI, subject to customary adjustments, of up to approximately $200 million over a period of nine years, and an overriding royalty interest in gas produced from the acreage. In 2013, DTI received approximately $82 million in cash proceeds. During the twelve months ended December 31, 2014, DTI received $16 million in additional cash proceeds resulting from post-closing adjustments. At December 31, 2014, deferred revenue totaled approximately $85 million. In March 2015, DTI and the natural gas producer closed on an amendment to the agreement, which included the immediate conveyance of approximately 9,000 acres of Marcellus Shale development rights and a two year extension of the term of the original agreement. The conveyance of development rights resulted in the recognition of $43 million ($27 million after-tax) of previously deferred revenue to operations and maintenance expense in Dominion Gas' Consolidated Statements of Income. At March 31, 2015, deferred revenue totaled approximately $40 million, which is expected to be recognized over the remaining term of the agreement. In March 2015, DTI closed an agreement with a natural gas producer to convey approximately 11,000 acres of Marcellus Shale development rights underneath one of its natural gas storage fields. The agreement provided for a payment to DTI, subject to customary adjustments, of approximately $27 million, and an overriding royalty interest in gas produced from the acreage. In March 2015, DTI received proceeds of $27 million associated with the conveyance of the acreage, resulting in a $27 million ($16 million after-tax) gain, included in other operations and maintenance expense in Dominion Gas' Consolidated Statements of Income. Dominion and Dominion Gas Blue Racer See Note 10 for a discussion of transactions related to Blue Racer.

Acquisitions and Dispositions

Dominion

Acquisition of Solar Projects

In March 2014, Dominion completed the acquisition of 100% of the equity interests of six solar development projects in California from Recurrent Energy Development Holdings, LLC for approximately $50 million in cash. The projects cost approximately $446 million to construct, including the initial acquisition cost. The facilities, which began commercial operations in the fourth quarter of 2014, generate approximately 139 MW.

The purchase price for this acquisition was allocated to Property, Plant and Equipment.

In April 2015, Dominion completed the acquisition of 100% of the equity interests of a solar project in California from EC&R NA Solar PV, LLC for approximately $66 million in cash. The project is expected to cost approximately $69 million once constructed, including the initial acquisition cost. Upon completion, the facility is expected to generate approximately 20 MW.

In April 2015, Dominion also completed the acquisition of 100% of the equity interests of a solar project in California from EDF Renewable Development, Inc. for approximately $106 million in cash. The projects owned by the acquired company are expected to cost approximately $111 million once constructed, including the initial acquisition cost. Upon completion, the facilities are expected to generate approximately 24 MW.

The allocation of the purchase price to individual assets for these investments is under evaluation by management and has not been finalized.

Long-term power purchase, interconnection and operation and maintenance agreements have been executed for each of the projects. Dominion expects to claim federal investment tax credits on the projects.

Acquisition of DCGT

In January 2015, Dominion completed the acquisition of 100% of the equity interests of DCGT from SCANA Corporation for approximately $495 million in cash, subject to final working capital adjustments. DCGT owns and operates nearly 1,500 miles of FERC-regulated interstate natural gas pipeline in South Carolina and southeastern Georgia. This acquisition supports Dominion’s natural gas expansion into the Southeast. The allocation of the purchase price is currently being evaluated and has preliminarily resulted in approximately $277 million of net property, plant and equipment, $250 million of goodwill, of which approximately $225 million is expected to be deductible for income tax purposes, and approximately $38 million of regulatory liabilities. The goodwill reflects the value associated with enhancing Dominion's regulated gas position, economic value attributable to future expansion projects as well as increased opportunities for synergies. The acquired assets of DCGT are included in the Dominion Energy operating segment.

On March 24, 2015, DCGT converted to a limited liability company under the laws of South Carolina and changed its name from Carolina Gas Transmission Corporation to DCGT. On April 1, 2015, Dominion contributed 100% of the issued and outstanding membership interests of DCGT to Dominion Midstream in exchange for total consideration of $495 million, subject to final working capital adjustments. Total consideration to Dominion consisted of the issuance of a two-year, approximately $295 million senior unsecured promissory note payable by Dominion Midstream at an annual interest rate of 0.6%, and 5,112,139 common units, valued at $200 million, representing limited partner interests in Dominion Midstream. The amount of the promissory note is subject to change to correspond with any working capital adjustments. The number of units was based on the volume weighted average trading price of Dominion Midstream's common units for the ten trading days prior to April 1, 2015, or $39.12 per unit. Since Dominion consolidates Dominion Midstream for financial reporting purposes, this transaction was eliminated upon consolidation and did not impact Dominion's financial position or cash flow.

Sale of Electric Retail Energy Marketing Business

In March 2014, Dominion completed the sale of its electric retail energy marketing business. The proceeds were approximately $187 million, net of transaction costs. The sale resulted in a gain, subject to post-closing adjustments, of approximately $100 million ($57 million after-tax) net of a $31 million write-off of goodwill, and is included in other operations and maintenance expense in Dominion's Consolidated Statements of Income. The sale of the electric retail energy marketing business did not qualify for discontinued operations classification.

Dominion Gas

Assignments of Marcellus Acreage

In December 2013, DTI closed an agreement with a natural gas producer to convey over time approximately 79,000 acres of Marcellus Shale development rights underneath one of its natural gas storage fields. The agreement provided for payments to DTI, subject to customary adjustments, of up to approximately $200 million over a period of nine years, and an overriding royalty interest in gas produced from the acreage. In 2013, DTI received approximately $82 million in cash proceeds. During the twelve months ended December 31, 2014, DTI received $16 million in additional cash proceeds resulting from post-closing adjustments. At December 31, 2014, deferred revenue totaled approximately $85 million. In March 2015, DTI and the natural gas producer closed on an amendment to the agreement, which included the immediate conveyance of approximately 9,000 acres of Marcellus Shale development rights and a two year extension of the term of the original agreement. The conveyance of development rights resulted in the recognition of $43 million ($27 million after-tax) of previously deferred revenue to operations and maintenance expense in Dominion Gas' Consolidated Statements of Income. At March 31, 2015, deferred revenue totaled approximately $40 million, which is expected to be recognized over the remaining term of the agreement.

In March 2015, DTI closed an agreement with a natural gas producer to convey approximately 11,000 acres of Marcellus Shale development rights underneath one of its natural gas storage fields. The agreement provided for a payment to DTI, subject to customary adjustments, of approximately $27 million, and an overriding royalty interest in gas produced from the acreage. In March 2015, DTI received proceeds of $27 million associated with the conveyance of the acreage, resulting in a $27 million ($16 million after-tax) gain, included in other operations and maintenance expense in Dominion Gas' Consolidated Statements of Income.

Dominion and Dominion Gas

Blue Racer

See Note 10 for a discussion of transactions related to Blue Racer.