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. Our reportable segments follow the same accounting policies as those described in Note 1 to our consolidated financial statements. 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 consolidated financial statements have been fully integrated with our existing operations. Technology Solutions. Our TS business segment combines KBR's proprietary technologies, equipment and catalyst supply 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 full life-cycle support solutions across the upstream, midstream and downstream hydrocarbons markets. We provide comprehensive project and program delivery capabilities as well as engineering services front-end consulting and feasibility studies, sustaining capital construction, turnarounds, maintenance services, and more. Our key capabilities leverage our operational and technical excellence as a global provider of EPC and high-impact consulting and engineering services for onshore oil and gas; LNG/GTL; oil refining; petrochemicals; chemicals; fertilizers; offshore oil and gas; and floating solutions. 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. Effective for the quarter ended September 30, 2019, we reported the results of joint venture operations related to a project in Latin America within our Non-strategic Business segment. The reclassification results from our decision during the quarter to wind down the operating activities of the joint venture and exit the business. Equity in earnings of unconsolidated affiliates related to this joint venture were previously reported in our Energy Solutions business segment and were losses of $13 million and $3 million for the years ended December 31, 2019 and 2018 , respectively. Other. Our Other segment includes corporate expenses and selling, general and administrative expenses not allocated to the business segments above. The following table presents revenues, gross profit (loss), equity in earnings of unconsolidated affiliates, selling, general and administrative expenses, acquisition and integration related costs, gain on disposition of assets, gain on consolidation of Aspire entities and operating income (loss) by reporting segment. Operations by Reportable Segment Years ended December 31, Dollars in millions 2019 2018 2017 Revenues: Government Solutions $ 3,925 $ 3,457 $ 2,193 Technology Solutions 374 297 269 Energy Solutions 1,339 1,157 1,671 Subtotal 5,638 4,911 4,133 Non-strategic Business 1 2 38 Total $ 5,639 $ 4,913 $ 4,171 Gross profit (loss): Government Solutions $ 430 $ 350 $ 188 Technology Solutions 118 106 98 Energy Solutions 100 134 153 Subtotal 648 590 439 Non-strategic Business 5 (6 )  Total $ 653 $ 584 $ 439 Equity in earnings of unconsolidated affiliates: Government Solutions $ 29 $ 32 $ 43 Technology Solutions    Energy Solutions 19 50 27 Subtotal 48 82 70 Non-strategic Business (13 ) (3 )  Total $ 35 $ 79 $ 70 Selling, general and administrative expenses: Government Solutions $ (134 ) (109 ) (57 ) Technology Solutions (28 ) (24 ) (25 ) Energy Solutions (63 ) (64 ) (68 ) Other (116 ) (97 ) (94 ) Subtotal (341 ) (294 ) (244 ) Non-strategic Business    Total $ (341 ) (294 ) (244 ) Acquisition and integration related costs: Government Solutions $ (2 ) (7 )  Technology Solutions    Energy Solutions    Other    Subtotal (2 ) (7 )  Non-strategic Business    Total $ (2 ) (7 )  Asset impairment and restructuring charges Government Solutions $  $  $  Technology Solutions    Energy Solutions   (6 ) Other    Subtotal   (6 ) Non-strategic Business    Total $  $  $ (6 ) Years ended December 31, Dollars in millions 2019 2018 2017 Gain (loss) on disposition of assets: Government Solutions 12 4  Technology Solutions    Energy Solutions  (2 ) 5 Other 5 (4 )  Subtotal 17 (2 ) 5 Non-strategic Business    Total 17 (2 ) 5 Gain on consolidation of Aspire entities: Government Solutions  113  Technology Solutions    Energy Solutions    Other  (5 )  Subtotal  108  Non-strategic Business    Total  108  Segment operating income (loss): Government Solutions $ 335 $ 383 $ 173 Technology Solutions 90 82 73 Energy Solutions 56 118 111 Other (111 ) (106 ) (93 ) Subtotal 370 477 264 Non-strategic Business (8 ) (9 )  Total $ 362 $ 468 $ 264 Years ended December 31, Dollars in millions 2019 2018 2017 Capital expenditures: Government Solutions $ 7 $ 11 $ 4 Technology Solutions 1   Energy Solutions 3 1 2 Other 9 5 2 Subtotal 20 17 8 Non-strategic Business    Total $ 20 $ 17 $ 8 Depreciation and amortization: Government Solutions $ 58 $ 42 $ 27 Technology Solutions 6 3 3 Energy Solutions 21 10 10 Other 19 8 8 Subtotal 104 63 48 Non-strategic Business    Total $ 104 $ 63 $ 48 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, and for unit rate and construction service contracts, the availability and detail of customer supplied engineering drawings. With a portfolio of more than one thousand contracts, 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. Changes in project-related estimates by business segment, which significantly impacted operating income during the periods presented, are as follows: Energy Solutions We recognized changes to equity earnings as a result of various changes to estimates on the Ichthys LNG Project during the years ended December 31, 2018 and 2017. See Note 8 for a discussion of the matters impacting this project. We also recognized a favorable change in estimated revenues and net income associated with variable consideration recognized as a result of successful completion and performance testing of a major ES project during the year ended December 31, 2018. During the year ended December 31, 2017, the PEMEX and PEP arbitration was settled (see Note 17 to our consolidated financial statements) which resulted in additional revenues and gross profit of $35 million during the year ended December 31, 2017. Balance Sheet Information by Reportable Segment Assets specific to business segments include receivables, contract assets, other current assets, claims and accounts receivable, certain identified property, plant and equipment, equity in and advances to related companies and goodwill. The remaining assets, such as cash and the remaining property, plant and equipment, are considered to be shared among the business segments and are therefore reported in "Other." December 31, Dollars in millions 2019 2018 Total assets: Government Solutions $ 2,749 $ 2,804 Technology Solutions 222 204 Energy Solutions 1,497 1,271 Other 889 746 Subtotal 5,357 5,025 Non-strategic Business 7 27 Total $ 5,364 $ 5,052 Goodwill (Note 11): Government Solutions $ 978 $ 977 Technology Solutions 50 51 Energy Solutions 237 237 Other   Subtotal 1,265 1,265 Non-strategic Business   Total $ 1,265 $ 1,265 Equity in and advances to related companies (Note 12): Government Solutions $ 151 $ 114 Technology Solutions   Energy Solutions 699 610 Other   Subtotal 850 724 Non-strategic Business   Total $ 850 $ 724 Selected Geographic Information Revenues by country are determined based on the location of services provided. Long-lived assets by country are determined based on the location of tangible assets. Years ended December 31, Dollars in millions 2019 2018 2017 Revenues: United States $ 2,705 $ 2,260 $ 1,986 Middle East 1,027 884 836 Europe 1,058 989 480 Australia 288 329 334 Canada 39 21 224 Africa 197 133 121 Asia 214 190 125 Other countries 111 107 65 Total $ 5,639 $ 4,913 $ 4,171 December 31, Dollars in millions 2019 2018 Property, plant &amp; equipment, net: United States $ 50 $ 51 United Kingdom 44 50 Other 36 20 Total $ 130 $ 121