Segmented information for the years ended December 31, 2019 , 2018 and 2017 is as follows: Year ended December 31, 2019 Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated (millions of Canadian dollars) Revenues 10,219 5,207 5,179 567 29,374 (477 ) 50,069 Commodity and gas distribution costs (29 )  (2,354 ) (2 ) (29,091 ) 472 (31,004 ) Operating and administrative (3,298 ) (2,232 ) (1,149 ) (189 ) (44 ) (79 ) (6,991 ) Impairment of long-lived assets (21 ) (105 )  (297 )   (423 ) Income/(loss) from equity investments 780 682 4 31 8 (2 ) 1,503 Other income/(expense) 30 (181 ) 67 1 3 515 435 Earnings before interest, income tax expense, and depreciation and amortization 7,681 3,371 1,747 111 250 429 13,589 Depreciation and amortization (3,391 ) Interest expense (2,663 ) Income tax expense (1,708 ) Earnings 5,827 Capital expenditures 1 2,548 1,753 1,100 23 2 124 5,550 Total property, plant and equipment, net 48,783 25,268 15,622 3,658 24 368 93,723 Year ended December 31, 2018 Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated (millions of Canadian dollars) Revenues 8,079 6,571 5,470 567 26,228 (537 ) 46,378 Commodity and gas distribution costs (16 ) (1,481 ) (2,748 ) (7 ) (25,689 ) 540 (29,401 ) Operating and administrative (3,124 ) (2,102 ) (1,111 ) (157 ) (73 ) (225 ) (6,792 ) Impairment of long-lived assets (180 ) (914 )  (4 )  (6 ) (1,104 ) Impairment of goodwill  (1,019 )     (1,019 ) Income/(loss) from equity investments 577 930 11 (28 ) 18 1 1,509 Other income/(expense) (5 ) 349 89 (2 ) (2 ) (481 ) (52 ) Earnings/(loss) before interest, income tax expense, and depreciation and amortization 5,331 2,334 1,711 369 482 (708 ) 9,519 Depreciation and amortization (3,246 ) Interest expense (2,703 ) Income tax expense (237 ) Earnings 3,333 Capital expenditures 1 3,102 2,644 1,066 33  27 6,872 Total property, plant and equipment, net 49,214 25,601 15,148 4,335 22 220 94,540 Year ended December 31, 2017 Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated (millions of Canadian dollars) Revenues 8,913 7,067 4,992 534 23,282 (410 ) 44,378 Commodity and gas distribution costs (18 ) (2,834 ) (2,689 )  (23,508 ) 412 (28,637 ) Operating and administrative (2,949 ) (1,756 ) (960 ) (163 ) (47 ) (567 ) (6,442 ) Impairment of long-lived assets  (4,463 )     (4,463 ) Impairment of goodwill  (102 )     (102 ) Income/(loss) from equity investments 416 653 23 6 8 (4 ) 1,102 Other income/(expense) 33 166 24 (5 ) 2 232 452 Earnings/(loss) before interest, income tax expense, and depreciation and amortization 6,395 (1,269 ) 1,390 372 (263 ) (337 ) 6,288 Depreciation and amortization (3,163 ) Interest expense (2,556 ) Income tax recovery 2,697 Earnings 3,266 Capital expenditures 1 2,799 4,016 1,177 321 1 108 8,422 1 Includes allowance for equity funds used during construction.