Reportable Segments The Registrants determination of reportable segments considers the strategic operating units under which the Registrants manage sales, allocate resources and assess performance of various products and services to wholesale or retail customers in differing regulatory environments. As of January 1, 2020, the Registrants CODM views net income as the measure of profit or loss for the reportable segments rather than the previous measure of operating income. Certain prior year amounts have been reclassified to conform to the current year presentation. As of December 31, 2019 , reportable segments in continuing operations by Registrant are as follows: Registrants Houston Electric T&amp;D Indiana Electric Integrated Natural Gas Distribution Midstream Investments CenterPoint Energy X X X X Houston Electric X CERC X  CenterPoint Energys and Houston Electrics Houston Electric T&amp;D reportable segment consists of electric transmission and distribution services in the Texas Gulf Coast area.  CenterPoint Energys Indiana Electric Integrated reportable segment consists of electric transmission and distribution services primarily to southwestern Indiana and includes power generation and wholesale power operations.  CenterPoint Energys Natural Gas Distribution reportable segment consists of (i) intrastate natural gas sales to, and natural gas transportation and distribution for residential, commercial, industrial and institutional customers in Arkansas, Indiana, Louisiana, Minnesota, Mississippi, Ohio, Oklahoma and Texas; (ii) permanent pipeline connections through interconnects with various interstate and intrastate pipeline companies through CEIP, formerly included in the Energy Services reportable segment; and (iii) temporary delivery of LNG and CNG throughout the contiguous 48 states through MES, formerly included in the Energy Services reportable segment.  CERCs Natural Gas Distribution reportable segment consists of (i) intrastate natural gas sales to, and natural gas transportation and distribution for residential, commercial, industrial and institutional customers in Arkansas, Louisiana, Minnesota, Mississippi, Oklahoma and Texas; (ii) permanent pipeline connections through interconnects with various interstate and intrastate pipeline companies through CEIP, formerly included in the Energy Services reportable segment; and (iii) temporary delivery of LNG and CNG throughout the contiguous 48 states through MES, formerly included in the Energy Services reportable segment.  CenterPoint Energys Midstream Investments reportable segment consists of the equity investment in Enable (excluding the Enable Series A Preferred Units).  CenterPoint Energys Corporate and Other consists of energy performance contracting and sustainable infrastructure services through ESG and other corporate operations which support all of the business operations of CenterPoint Energy.  CERCs Corporate and Other consists primarily of corporate operations which support all of the business operations of CERC. Discontinued Operations On February 3, 2020, CenterPoint Energy, through its subsidiary VUSI, entered into the Securities Purchase Agreement to sell the Infrastructure Services Disposal Group, which consists of underground pipeline construction and repair services. Accordingly, the previously reported Infrastructure Services reportable segment has been eliminated. The transaction closed on April 9, 2020. For further information, see Note 4. Additionally, on February 24, 2020, CenterPoint Energy, through its subsidiary CERC Corp., entered into the Equity Purchase Agreement to sell the Energy Services Disposal Group, which consists of substantially all of the businesses within the Energy Services reportable segment. Accordingly, the previously reported Energy Services reportable segment has been eliminated. The transaction is expected to close in the second quarter of 2020. For further information, see Note 4. Expenditures for long-lived assets include property, plant and equipment. Intersegment sales are eliminated in consolidation, except as described in Note 2(b). Recast financial data for reportable segments and products and services are as follows: CenterPoint Energy Revenues from External Customers Equity in Earnings of Unconsolidated Affiliates Depreciation and Amortization Interest Income Interest Expense Income Tax Expense (Benefit) Net Income (Loss) (in millions) For the year ended December 31, 2019: Houston Electric T&amp;D (3) $ 2,996 $  $ 648 $ 22 (1) $ (164 ) (2) $ 80 $ 362 Indiana Electric Integrated 523  91  (22 ) 16 57 Natural Gas Distribution 3,745  420 7 (103 ) 50 261 Midstream Investments  229  8 (53 ) 53 131 Corporate and Other 300 1 66 178 (384 ) (107 ) (129 ) Eliminations    (198 ) 198   Continuing Operations $ 7,564 $ 230 $ 1,225 $ 17 $ (528 ) $ 92 682 Discontinued Operations, net 109 Consolidated $ 791 For the year ended December 31, 2018: Houston Electric T&amp;D (3) $ 3,232 $  $ 917 $ 1 (1) $ (138 ) (2) $ 89 $ 334 Natural Gas Distribution 3,030  280 5 (66 ) 37 170 Midstream Investments  307   (10 ) 73 224 Corporate and Other 15  33 115 (244 ) (44 ) (332 ) Eliminations    (97 ) 97  Continuing Operations $ 6,277 $ 307 $ 1,230 $ 24 $ (361 ) $ 155 396 Discontinued Operations, net (28 ) Consolidated $ 368 For the year ended December 31, 2017: Houston Electric T&amp;D (3) $ 2,997 $  $ 724 $ 1 (1) $ (128 ) (2) $ (7 ) $ 429 Natural Gas Distribution 2,688  263 5 (70 ) 103 167 Midstream Investments  265    104 161 Corporate and Other 14  33 90 (211 ) (978 ) 951 Eliminations    (96 ) 96   Continuing Operations $ 5,699 $ 265 $ 1,020 $  $ (313 ) $ (778 ) $ 1,708 Discontinued Operations, net 84 Consolidated $ 1,792 (1) Excludes interest income from Securitization Bonds of $5 million , $4 million and $2 million for the years ended December 31, 2019, 2018 and 2017, respectively. (2) Excludes interest expense on Securitization Bonds of $39 million , $59 million and $77 million for the years ended December 31, 2019, 2018 and 2017, respectively. Total Assets Expenditures for Long-lived Assets December 31, December 31, 2019 2018 2017 2019 2018 2017 (in millions) Houston Electric T&amp;D $ 11,264 $ 10,509 $ 10,292 $ 1,033 $ 952 $ 924 Indiana Electric Integrated 3,168   183   Natural Gas Distribution 14,105 7,137 6,771 1,098 638 523 Midstream Investments 2,473 2,482 2,472    Corporate and Other, net of eliminations (4) 2,555 5,856 2,275 194 110 36 Continuing Operations 33,565 25,984 21,810 2,508 1,700 1,483 Assets Held for Sale/Discontinued Operations 1,964 1,109 972 79 20 11 Consolidated $ 35,529 $ 27,093 $ 22,782 $ 2,587 $ 1,720 $ 1,494 (3) CenterPoint Energys Houston Electric T&amp;Ds revenues from major customers are as follows: Year Ended December 31, 2019 2018 2017 (in millions) Affiliates of NRG $ 727 $ 705 $ 713 Affiliates of Vistra Energy Corp. 263 251 229 (4) Total assets included pension and other postemployment-related regulatory assets of $584 million , $665 million and $600 million as of December 31, 2019 , 2018 and 2017 , respectively. Additionally, total assets as of December 31, 2018 included $3.9 billion of temporary investments included in Cash and cash equivalents on CenterPoint Energys Consolidated Balance Sheets. Houston Electric Houston Electric consists of a single reportable segment; therefore, a tabular reportable segment presentation has not been included. Houston Electrics revenues from major external customers are as follows: Year Ended December 31, 2019 2018 2017 (in millions) Affiliates of NRG $ 727 $ 705 $ 713 Affiliates of Vistra Energy Corp. 263 251 229 CERC Revenues from External Customers Depreciation and Amortization Interest Income Interest Expense Income Tax Expense (Benefit) Net Income (Loss) (in millions) For the year ended December 31, 2019: Natural Gas Distribution $ 3,013 $ 293 $ 6 $ (75 ) $ 45 $ 199 Corporate and Other 5  98 (140 ) (48 ) (10 ) Eliminations   (99 ) 99   Continuing Operations $ 3,018 $ 293 $ 5 $ (116 ) $ (3 ) 189 Discontinued Operations, net 23 Consolidated $ 212 For the year ended December 31, 2018: Natural Gas Distribution $ 3,030 $ 280 $ 5 $ (66 ) $ 37 $ 170 Corporate and Other 1  80 (140 ) (6 ) (72 ) Eliminations   (84 ) 84   Continuing Operations $ 3,031 $ 280 $ 1 $ (122 ) $ 31 98 Discontinued Operations, net 110 Consolidated $ 208 For the year ended December 31, 2017: Natural Gas Distribution $ 2,688 $ 263 $ 5 $ (70 ) $ 103 $ 167 Corporate and Other   89 (147 ) (417 ) 333 Eliminations   (94 ) 94   Continuing Operations $ 2,688 $ 263 $  $ (123 ) $ (314 ) 500 Discontinued Operations, net 245 Consolidated $ 745 Total Assets Expenditures for Long-lived Assets December 31, December 31, 2019 2018 2017 (1) 2019 2018 2017 (in millions) Natural Gas Distribution $ 7,698 $ 7,131 $ 6,763 $ 773 $ 638 $ 523 Corporate and Other, net of eliminations (90 ) 57 (49 )    Continuing Operations 7,608 7,188 6,714 773 638 523 Assets Held for Sale 904 1,109 3,444 12 20 11 Consolidated $ 8,512 $ 8,297 $ 10,158 $ 785 $ 658 $ 534 (1) Assets Held for Sale for 2017 includes the $2,472 million investment in Enable prior to the Internal Spin. See Note 4. Year Ended December 31, 2019 2018 2017 Revenues by Products and Services: CenterPoint Energy Houston Electric CERC CenterPoint Energy Houston Electric CERC CenterPoint Energy Houston Electric CERC (in millions) Electric delivery $ 3,019 $ 2,990 $  $ 3,232 $ 3,234 $  $ 2,997 $ 2,998 $  Retail electric sales 486         Wholesale electric sales 14         Retail gas sales 3,563  2,831 2,857  2,857 2,530  2,530 Wholesale gas sales          Gas transportation and processing 33  33 32  32 29  29 Infrastructure services          Energy products and services 449  154 156  142 143  129 Total $ 7,564 $ 2,990 $ 3,018 $ 6,277 $ 3,234 $ 3,031 $ 5,699 $ 2,998 $ 2,688