Table of Contents The changes in carrying amount of goodwill by reportable segment for the years ended December 31, 2018 and 2017 were as follows: $^{1 }$Other adjustments are comprised primarily of foreign currency translation. $^{2 }$Includes All Other operating segments (See Note 23). We have investments in certain debt and equity securities, primarily at Insurance Services, which are recorded at fair value and are primarily included in Other assets in Statement 3. Debt securities have been classified as available-for-sale and the unrealized gains and losses arising from the revaluation of these debt securities are included, net of applicable deferred income taxes, in equity (Accumulated other comprehensive income (loss) in Statement 3). Realized gains and losses on sales of debt investments are generally determined using the specific identification method and are included in Other income (expense) in Statement 1. 110 11.Investments in debt and equity securities (Millions of dollars) December 31, 2017 Acquisitions Other Adjustments 1 December 31, 2018 Construction Industries Goodwill $ 305 $ — $ (1) $ 304 Impairment (22) — — (22) Net goodwill 283 — (1) 282 Resource Industries Goodwill 4,232 — (60) 4,172 Impairment (1,175) — — (1,175) Net goodwill 3,057 — (60) 2,997 Energy & Transportation Goodwill 2,806 127 (51) 2,882 All Other  2 Goodwill 54 — 2 56 Consolidated total Goodwill 7,397 127 (110) 7,414 Impairment (1,197) — — (1,197) Net goodwill $ 6,200 $ 127 $ (110) $ 6,217 December 31, 2016 Acquisitions Other Adjustments  1 December 31, 2017 Construction Industries Goodwill $ 296 $ — $ 9 $ 305 Impairment (22) — — (22) Net goodwill 274 — 9 283 Resource Industries Goodwill 4,110 — 122 4,232 Impairment (1,175) — — (1,175) Net goodwill 2,935 — 122 3,057 Energy & Transportation Goodwill 2,756 — 50 2,806 All Other  2 Goodwill 55 — (1) 54 Consolidated total Goodwill 7,217 — 180 7,397 Impairment (1,197) — — (1,197) Net goodwill $ 6,020 $ — $ 180 $ 6,200