Business Segment Information We provide a wide range of professional services and the management of our business is heavily focused on major projects or programs within each of our reportable segments. At any given time, a relatively few number of projects, government programs and joint ventures represent a substantial part of our operations. We are organized into three core business segments, Government Solutions, Technology Solutions, and Energy Solutions and two non-core business segments as described below: Government Solutions. Our GS business segment provides full life-cycle support solutions to defense, space, aviation and other programs and missions for military and other government agencies in the U.S., U.K. and Australia. KBR covers the full spectrum from research and development; through systems engineering, test and evaluation, systems integration and program management; to operations support, maintenance and field logistics. Our acquisitions as described in Note 4 to our condensed consolidated financial statements have been fully integrated with our existing GS business segment operations. Technology Solutions. Our TS business segment combines KBR's proprietary technologies, equipment, catalyst and associated knowledge-based services into a global business for refining, petrochemicals, inorganic and specialty chemicals as well as gasification, syngas, ammonia, nitric acid and fertilizers. From early planning through scope definition, advanced technologies and project life-cycle support, our TS business segment works closely with customers to provide the optimal approach to maximize their return on investment. Energy Solutions. Our ES business segment provides feasibility and solutions development, technical consulting, engineering and design services, program management and energy transition solutions for industrial clients. During the first quarter of 2020, our management initiated and approved a restructuring plan in response to the dislocation of the global energy market resulting from the decline in oil prices and the COVID-19 pandemic. In the second quarter of 2020, management approved additional restructuring activities and decided to discontinue pursuing certain projects , principally lump-sum EPC and commoditized construction services. Non-strategic Business. Our Non-strategic Business segment represents the operations or activities we determine are no longer core to our business strategy and that we have exited or intend to exit upon completion of existing contracts. All Non-strategic business projects are substantially complete. Current activities in this business segment primarily relate to final project close-out, negotiation and settlement of claims, joint venture liquidation and various other matters associated with these projects. Other. Our Other segment includes corporate expenses and selling, general and administrative expenses not allocated to the business segments above. Operations by Reportable Segment Three Months Ended Six Months Ended June 30, June 30, 2020 2019 2020 2019 Dollars in millions Revenues: Government Solutions $ 925 $ 1,033 $ 1,880 $ 2,008 Technology Solutions 73 93 161 185 Energy Solutions 387 296 878 568 Subtotal 1,385 1,422 2,919 2,761 Non-strategic Business   3 1 Total revenues $ 1,385 $ 1,422 $ 2,922 $ 2,762 Gross profit (loss): Government Solutions $ 114 $ 112 $ 241 $ 202 Technology Solutions 23 26 52 53 Energy Solutions 6 22 40 58 Subtotal 143 160 333 313 Non-strategic Business (1 )  (5 )  Total gross profit $ 142 $ 160 $ 328 $ 313 Equity in earnings of unconsolidated affiliates: Government Solutions $ 7 $ 8 $ 12 $ 14 Energy Solutions 9 11 5 14 Subtotal 16 19 17 28 Non-strategic Business  (4 )  (13 ) Total equity in earnings of unconsolidated affiliates 16 15 17 15 Selling, general and administrative expenses: Government Solutions $ (29 ) $ (35 ) $ (69 ) $ (65 ) Technology Solutions (5 ) (7 ) (12 ) (14 ) Energy Solutions (15 ) (16 ) (33 ) (32 ) Other (24 ) (30 ) (56 ) (55 ) Total selling, general and administrative expenses (73 ) (88 ) (170 ) (166 ) Acquisition and integration related costs: Government Solutions $  $ (1 ) $  $ (2 ) Total acquisition and integration related costs  (1 )  (2 ) Goodwill impairment: Energy Solutions (37 )  (99 )  Total goodwill impairment (37 )  (99 )  Restructuring charges and asset impairments: Energy Solutions (51 )  (103 )  Other (8 )  (67 )  Subtotal (59 )  (170 )  Non-strategic Business   (5 )  Total restructuring charges and asset impairments (59 )  (175 )  Gain on disposition of assets: Government Solutions $  $ 7 $ 1 $ 11 Energy Solutions (1 )  16  Other  (1 ) 1 (1 ) Total gain on disposition of assets (1 ) 6 18 10 Three Months Ended Six Months Ended June 30, June 30, 2020 2019 2020 2019 Dollars in millions Segment operating income (loss): Government Solutions $ 92 $ 90 $ 185 $ 160 Technology Solutions 18 19 40 39 Energy Solutions (89 ) 17 (174 ) 40 Other (32 ) (30 ) (122 ) (56 ) Subtotal (11 ) 96 (71 ) 183 Non-strategic Business (1 ) (4 ) (10 ) (13 ) Operating (loss) income $ (12 ) $ 92 $ (81 ) $ 170 Interest expense (19 ) (26 ) $ (42 ) $ (51 ) Other non-operating (loss) income (2 ) 2 $ 5 $ 7 (Loss) income before income taxes and noncontrolling interests $ (33 ) $ 68 $ (118 ) $ 126 Changes in Project-related Estimates There are many factors that may affect the accuracy of our cost estimates and ultimately our future profitability. These include, but are not limited to, the availability and costs of resources (such as labor, materials and equipment), productivity and weather. We generally realize both lower and higher than expected margins on projects in any given period. We recognize revisions of revenues and costs in the period in which the revisions are known. This may result in the recognition of costs before the recognition of related revenue recovery, if any. Energy Solutions We recognized a favorable change of $16 million in estimated revenues and gross profit associated with variable consideration resulting from resolution of a contingency on a completed project during the first quarter of 2020.