Anadarkos business segments are separately managed due to distinct operational differences. On February 28, 2019, Anadarko completed the previously announced contribution and sale of substantially all of its remaining midstream assets to WES. Due to this contribution and sale, the Company will no longer report an Other Midstream segment and will now have two reporting segments: Exploration and Production and WES Midstream, which include their respective marketing results. Prior period amounts have been reclassified to conform to the current periods presentation. The Exploration and Production reporting segment is engaged in the exploration, development, production, and sale of oil, natural gas, and NGLs and in advancing its Mozambique LNG project toward FID. The WES Midstream reporting segment is engaged in gathering, compressing, treating, processing, and transporting of natural gas; gathering, stabilizing, and transporting of oil and NGLs; and gathering and disposing of produced water. To assess the performance of Anadarkos operating segments, the chief operating decision maker analyzes Adjusted EBITDAX. The Company defines Adjusted EBITDAX as income (loss) before income taxes; interest expense; DD&amp;A; exploration expense; gains (losses) on divestitures, net; impairments; total (gains) losses on derivatives, net, less net cash from settlement of commodity derivatives; certain items not related to the Companys normal operations; and less net income (loss) attributable to noncontrolling interests. The Companys definition of Adjusted EBITDAX excludes gains (losses) on divestitures, net and exploration expense as they are not indicators of operating efficiency for a given reporting period. DD&amp;A and impairments are excluded from Adjusted EBITDAX as a measure of segment operating performance because capital expenditures are evaluated at the time capital costs are incurred. Adjusted EBITDAX also excludes interest expense to allow for assessment of segment operating results without regard to Anadarkos financing methods or capital structure. Total (gains) losses on derivatives, net, less net cash from settlement of commodity derivatives are excluded from Adjusted EBITDAX because these (gains) losses are not considered a measure of asset operating performance. Finally, net income (loss) attributable to noncontrolling interests is excluded from the Companys measure of Adjusted EBITDAX because it represents earnings that are not attributable to the Companys common stockholders. Management believes Adjusted EBITDAX provides information useful in assessing the Companys operating and financial performance across periods. Adjusted EBITDAX as defined by Anadarko may not be comparable to similarly titled measures used by other companies and should be considered in conjunction with net income (loss) attributable to common stockholders and other performance measures, such as operating income. Below is a reconciliation of consolidated Adjusted EBITDAX to income (loss) before income taxes: Three Months Ended March 31, millions 2019 2018 Income (loss) before income taxes $ 262 $ 300 Interest expense 253 228 DD&amp;A 1,081 990 Exploration expense 49 168 (Gains) losses on divestitures, net 5 24 Impairments  19 Total (gains) losses on derivatives, net, less net cash from settlement of commodity derivatives 316 (27 ) Reorganization-related charges 18  Less net income (loss) attributable to noncontrolling interests 111 53 Consolidated Adjusted EBITDAX $ 1,873 $ 1,649 17. Segment Information (Continued) Information presented below as Other and Intersegment Eliminations includes corporate costs, margin on sales of third-party commodity purchases, deficiency fee expenses, results from hard-minerals royalties, net cash from settlement of commodity derivatives, and net income (loss) attributable to noncontrolling interests. The following summarizes selected financial information for Anadarkos reporting segments: millions Exploration &amp; Production WES Midstream Other and Intersegment Eliminations Total Three Months Ended March 31, 2019 Sales revenues $ 2,606 $ 499 $ 21 $ 3,126 Intersegment revenues 51 172 (223 )  Other 8 58 31 97 Total revenues and other (1) 2,665 729 (171 ) 3,223 Operating costs and expenses (2) 992 337 (89 ) 1,240 Net cash from settlement of commodity derivatives   (6 ) (6 ) Other (income) expense, net (3)  (36 ) 38 2 Net income (loss) attributable to noncontrolling interests   111 111 Total expenses and other 992 301 54 1,347 Total (gains) losses on derivatives, net included in marketing revenue, less net cash from settlement   (3 ) (3 ) Adjusted EBITDAX $ 1,673 $ 428 $ (228 ) $ 1,873 Three Months Ended March 31, 2018 Sales revenues $ 2,656 $ 355 $ 15 $ 3,026 Intersegment revenues 10 153 (163 )  Other (9 ) 37 15 43 Total revenues and other (1) 2,657 545 (133 ) 3,069 Operating costs and expenses (2) 870 233 214 1,317 Net cash from settlement of commodity derivatives   68 68 Other (income) expense, net   (12 ) (12 ) Net income (loss) attributable to noncontrolling interests   53 53 Total expenses and other 870 233 323 1,426 Total (gains) losses on derivatives, net included in marketing revenue, less net cash from settlement   6 6 Adjusted EBITDAX $ 1,787 $ 312 $ (450 ) $ 1,649 (1) Total revenues and other excludes gains (losses) on divestitures, net since these gains and losses are excluded from Adjusted EBITDAX. (2) Operating costs and expenses excludes exploration expense, DD&amp;A, impairments, reorganization-related charges, and certain other operating expenses since these expenses are excluded from Adjusted EBITDAX. (3) Other (income) expense, net excludes reorganization-related charges since these expenses are excluded from Adjusted EBITDAX. 17. Segment Information (Continued) The following summarizes selected financial information for Anadarkos reporting segments: millions Exploration &amp; Production WES Midstream Other and Intersegment Eliminations Total March 31, 2019 Net properties and equipment $ 18,342 $ 8,630 $ 1,964 $ 28,936 Capital expenditures (1) $ 922 $ 315 $ 59 $ 1,296 Goodwill $ 4,343 $ 446 $  $ 4,789 December 31, 2018 Net properties and equipment $ 18,267 $ 8,410 $ 1,938 $ 28,615 Capital expenditures (1) $ 4,103 $ 1,912 $ 170 $ 6,185 Goodwill $ 4,343 $ 446 $  $ 4,789 (1) WES Midstream includes $49 million at March 31, 2019, and $734 million at December 31, 2018, of capitalized costs incurred prior to the contribution and sale of midstream assets to WES.