Note 21. Operating Segments The Companies are organized primarily on the basis of products and services sold in the U.S. A description of the operations included in the Companies primary operating segments is as follows: Primary Operating Segment Description of Operations Dominion Energy Virginia Power Dominion Energy Gas Power Delivery Regulated electric distribution X X Regulated electric transmission X X Power Generation Regulated electric generation fleet X X Merchant electric generation fleet X Gas Infrastructure Gas transmission and storage X X Gas distribution and storage X X Gas gathering and processing X X LNG terminalling and storage X Nonregulated retail energy marketing X Southeast Energy Regulated electric distribution X Regulated electric transmission X Regulated electric generation fleet X Gas distribution and storage X Nonregulated retail energy marketing X In addition to the operating segments above, the Companies also report a Corporate and Other segment. Dominion Energy The Corporate and Other Segment of Dominion Energy includes its corporate, service company and other functions (including unallocated debt). In addition, Corporate and Other includes specific items attributable to Dominion Energys operating segments that are not included in profit measures evaluated by executive management in assessing the segments performance or in allocating resources. In the three months ended March 31, 2019, Dominion Energy reported after-tax net expenses of $1.6 billion for specific items in the Corporate and Other segment, with $1.4 billion of net expenses attributable to its operating segments. In the three months ended March 31, 2018, Dominion Energy reported after-tax net expenses of $238 million for specific items in the Corporate and Other segment, with $218 million of net expenses attributable to its operating segments. The net expense for specific items attributable to Dominion Energys operating segments in 2019 primarily related to the impact of the following items:  A $1.0 billion ($756 million after-tax) charge for refunds of amounts previously collected from retail electric customers of DESC for the NND Project , attributable to Southeast Energy;  A $369 million ($275 million after-tax) charge related to the early retirement of certain Virginia Power electric generation facilities, attributable to Power Generation; and  A $198 million tax charge for $264 million of income tax-related regulatory assets acquired in the SCANA Combination for which Dominion Energy committed to forgo recovery, attributable to Southeast Energy;  A $169 million ($127 million after-tax) charge for a settlement agreement of a DESC ratepayer class action lawsuit, attributable to Southeast Energy;  A $160 million ($119 million after-tax) charge related to Virginia Powers planned early retirement of certain automated meter reading infrastructure, attributable to Power Delivery;  $106 million ($81 million after-tax) of merger and integration-related costs associated with the SCANA Combination, attributable to Southeast Energy; and  A $105 million ($79 million after-tax) charge for property, plant and equipment acquired in the SCANA Combination for which Dominion Energy committed to forgo recovery, attributable to Southeast Energy; partially offset by  A $253 million ($189 million after-tax) net gain related to investments in nuclear decommissioning trust funds, attributable to Power Generation; and  A $113 million ($84 million after-tax) benefit from the revision of future ash pond and landfill closure costs as a result of Virginia legislation enacted in March 2019, attributable to Power Generation. The net expense for specific items attributable to Dominion Energys operating segments in 2018 primarily related to the impact of the following items:  A $215 million ($160 million after-tax) charge associated with Virginia legislation enacted in March 2018 that requires one-time rate credits of certain amounts to utility customers, attributable to:  Power Generation ($109 million after-tax); and  Power Delivery ($51 million after-tax).  A $43 million ($32 million after-tax) loss on investments held in nuclear decommissioning trust funds, attributable to Power Generation. The following table presents segment information pertaining to Dominion Energys operations: Power Delivery Power Generation Gas Infrastructure Southeast Energy Corporate and Other Adjustments/ Eliminations Consolidated Total (millions) Three Months Ended March 31, 2019 Total revenue from external customers $ 598 $ 1,745 $ 1,373 $ 1,182 $ (1,040 ) $  $ 3,858 Intersegment revenue 6 4 26  184 (220 )  Total operating revenue 604 1,749 1,399 1,182 (856 ) (220 ) 3,858 Net income (loss) attributable to Dominion Energy 155 308 359 132 (1,634 )  (680 ) Three Months Ended March 31, 2018 Total revenue from external customers $ 563 $ 1,860 $ 1,222 $ (207 ) $ 28 $ 3,466 Intersegment revenue 6 2 6 175 (189 )  Total operating revenue 569 1,862 1,228 (32 ) (161 ) 3,466 Net income (loss) attributable to Dominion Energy 156 348 327 (328 )  503 Intersegment sales and transfers for Dominion Energy are based on contractual arrangements and may result in intersegment profit or loss that is eliminated in consolidation. Virginia Power The Corporate and Other Segment of Virginia Power primarily includes specific items attributable to its operating segments that are not included in profit measures evaluated by executive management in assessing the segments' performance or in allocating resources. In the three months ended March 31, 2019, Virginia Power reported after-tax net expenses of $344 million for specific items in the Corporate and Other segment, with $324 million of net expenses attributable to its operating segments. In the three months ended March 31, 2018, Virginia Power reported after-tax net expenses of $197 million for specific items in the Corporate and Other segment, with $189 million of net expenses attributable to its operating segments. The net expense for specific items attributable to Virginia Powers operating segments in 2019 primarily related to the impact of the following items:  A $369 million ($275 million after-tax) charge related to the early retirement of certain electric generation facilities, attributable to Power Generation;  A $160 million ($119 million after-tax) charge related to the planned early retirement of certain automated meter reading infrastructure, attributable to Power Delivery; and  A $29 million ($22 million after-tax) charge related to a portion of rate adjustment clauses for excess deferred taxes which are probable of being returned to customers, attributable to:  Power Generation ($19 million after-tax); and  Power Delivery ($3 million after-tax), partially offset by  A $113 million ($84 million after-tax) benefit from the revision of future ash pond and landfill closure costs as a result of Virginia legislation enacted in March 2019, attributable to Power Generation. The net expense for specific items attributable to Virginia Powers operating segments in 2018 primarily related to the impact of the following items:  A $215 million ($160 million after-tax) charge associated with Virginia legislation enacted in March 2018 that requires one-time rate credits of certain amounts to utility customers, attributable to:  Power Generation ($109 million after-tax); and  Power Delivery ($51 million after-tax).  A $31 million ($23 million after-tax) charge for storm damage and service restoration costs associated with Winter Storm Riley affecting its Virginia service territory, attributable to Power Delivery. The following table presents segment information pertaining to Virginia Powers operations: Power Delivery Power Generation Corporate and Other Consolidated Total (millions) Three Months Ended March 31, 2019 Operating revenue $ 598 $ 1,396 $ (29 ) $ 1,965 Net income (loss) 154 204 (338 ) 20 Three Months Ended March 31, 2018 Operating revenue $ 563 $ 1,400 $ (215 ) $ 1,748 Net income (loss) 154 222 (192 ) 184 Dominion Energy Gas The Corporate and Other Segment of Dominion Energy Gas primarily includes specific items attributable to Dominion Energy Gas operating segment that are not included in profit measures evaluated by executive management in assessing the segments performance or in allocating resources and the effect of certain items recorded at Dominion Energy Gas as a result of Dominion Energys basis in the net assets contributed. In both the three months ended March 31, 2019 and 2018, Dominion Energy Gas reported an immaterial amount of specific items in the Corporate and Other segment. The following table presents segment information pertaining to Dominion Energy Gas operations: Gas Infrastructure Corporate and Other Consolidated Total (millions) Three Months Ended March 31, 2019 Operating revenue $ 511 $  $ 511 Net income (loss) 119 (3 ) 116 Three Months Ended March 31, 2018 Operating revenue $ 526 $  $ 526 Net income (loss) 167 (1 ) 166