SEGMENT AND RELATED INFORMATION DTE Energy sets strategic goals, allocates resources, and evaluates performance based on the following structure: Electric segment consists principally of DTE Electric, which is engaged in the generation, purchase, distribution, and sale of electricity to approximately 2.2 million residential, commercial, and industrial customers in southeastern Michigan. Gas segment consists principally of DTE Gas, which is engaged in the purchase, storage, transportation, distribution, and sale of natural gas to approximately 1.3 million residential, commercial, and industrial customers throughout Michigan and the sale of storage and transportation capacity. Gas Storage and Pipelines is primarily engaged in services related to the gathering, transportation, and storage of natural gas. Power and Industrial Projects is comprised primarily of projects that deliver energy and utility-type products and services to industrial, commercial, and institutional customers, produce reduced emissions fuel, and sell electricity and pipeline-quality gas from renewable energy projects. Energy Trading consists of energy marketing and trading operations. Corporate and Other includes various holding company activities, holds certain non-utility debt, and holds energy-related investments. The federal income tax provisions or benefits of DTE Energys subsidiaries are determined on an individual company basis and recognize the tax benefit of tax credits and net operating losses, if applicable. The state and local income tax provisions of the utility subsidiaries are determined on an individual company basis and recognize the tax benefit of various tax credits and net operating losses, if applicable. The subsidiaries record federal, state, and local income taxes payable to or receivable from DTE Energy based on the federal, state, and local tax provisions of each company. Inter-segment billing for goods and services exchanged between segments is based upon tariffed or market-based prices of the provider and primarily consists of the sale of reduced emissions fuel, power sales, and natural gas sales in the following segments: Year Ended December 31, 2019 2018 2017 (In millions) Electric $ 56 $ 52 $ 48 Gas 12 12 8 Gas Storage and Pipelines 27 36 42 Power and Industrial Projects 596 642 569 Energy Trading 22 27 35 Corporate and Other 2 2 2 $ 715 $ 771 $ 704 Financial data of DTE Energy's business segments follows: Electric Gas Gas Storage and Pipelines Power and Industrial Projects Energy Trading Corporate and Other Reclassifications and Eliminations Total (In millions) 2019 Operating Revenues  Utility operations $ 5,224 1,482     (68 ) $ 6,638 Operating Revenues  Non-utility operations $ 5  501 1,560 4,610 2 (647 ) $ 6,031 Depreciation and amortization $ 949 144 94 69 6 1  $ 1,263 Interest expense $ 315 78 73 33 8 266 (132 ) $ 641 Interest income $ (2 ) (6 ) (8 ) (9 ) (4 ) (120 ) 132 $ (17 ) Equity in earnings of equity method investees $ 1 2 97 14  (3 )  $ 111 Income Tax Expense (Benefit) $ 137 62 74 (63 ) 17 (75 )  $ 152 Net Income (Loss) Attributable to DTE Energy Company $ 714 185 204 133 49 (116 )  $ 1,169 Investment in equity method investees $ 5 11 1,685 130  31  $ 1,862 Capital expenditures and acquisitions $ 2,368 530 2,510 54 5   $ 5,467 Goodwill $ 1,208 743 470 26 17   $ 2,464 Total Assets $ 24,617 5,717 4,832 537 798 7,679 (2,298 ) $ 41,882 Electric Gas Gas Storage and Pipelines Power and Industrial Projects Energy Trading Corporate and Other Reclassifications and Eliminations Total (In millions) 2018 Operating Revenues  Utility operations $ 5,298 1,436     (64 ) $ 6,670 Operating Revenues  Non-utility operations $  485 2,204 5,557 3 (707 ) $ 7,542 Depreciation and amortization $ 836 133 82 67 5 1  $ 1,124 Interest expense $ 283 70 68 31 6 220 (119 ) $ 559 Interest income $  (6 ) (9 ) (9 ) (3 ) (104 ) 119 $ (12 ) Equity in earnings of equity method investees $  2 123 3  4  $ 132 Income Tax Expense (Benefit) $ 193 67 68 (195 ) 13 (48 )  $ 98 Net Income (Loss) Attributable to DTE Energy Company $ 664 150 235 161 39 (129 )  $ 1,120 Investment in equity method investees $ 7 12 1,585 134  33  $ 1,771 Capital expenditures and acquisitions $ 1,979 460 176 91 5 2  $ 2,713 Goodwill $ 1,208 743 299 26 17   $ 2,293 Total Assets $ 22,501 5,378 3,161 495 909 6,153 (2,309 ) $ 36,288 Electric Gas Gas Storage and Pipelines Power and Industrial Projects Energy Trading Corporate and Other Reclassifications and Eliminations Total (In millions) 2017 Operating Revenues  Utility operations $ 5,102 1,388     (56 ) $ 6,434 Operating Revenues  Non-utility operations $   453 2,089 4,277 2 (648 ) $ 6,173 Depreciation and amortization $ 753 123 76 72 5 1  $ 1,030 Interest expense $ 274 65 77 29 5 192 (106 ) $ 536 Interest income $  (7 ) (14 ) (7 ) (2 ) (88 ) 106 $ (12 ) Equity in earnings of equity method investees $ 1 2 90 9    $ 102 Income Tax Expense (Benefit) (a) $ 321 78 (30 ) (195 ) 49 (48 )  $ 175 Net Income (Loss) Attributable to DTE Energy Company $ 606 146 275 138 72 (103 )  $ 1,134 Investment in equity method investees $ 7 11 879 150  26  $ 1,073 Capital expenditures and acquisitions $ 1,574 463 137 56 7 13  $ 2,250 Goodwill $ 1,208 743 299 26 17   $ 2,293 Total Assets $ 21,163 5,072 2,594 593 725 5,324 (1,704 ) $ 33,767 _____________________________________ (a) Includes Income Tax Expense (Benefit) of $(5) million , $(115) million , $(21) million , $2 million , and $34 million for Electric  non-utility, Gas Storage and Pipelines, Power and Industrial Projects, Energy Trading, and Corporate and Other, respectively, related to the enactment of the TCJA.