? ? ? In Millions ? Three Months Ended March 31 2018 2017 ? CMS Energy, including Consumers ? Operating revenue ? Electric utility $ 1,078 $ 1,036 ? Gas utility 777 701 ? Enterprises 63 59 ? Other reconciling items 35 33 ? Total operating revenue  CMS Energy $ 1,953 $ 1,829 ? Consumers ? Operating revenue ? Electric utility $ 1,078 $ 1,036 ? Gas utility 777 701 ? Total operating revenue  Consumers $ 1,855 $ 1,737 ? CMS Energy, including Consumers ? Net income (loss) available to common stockholders ? Electric utility $ 139 $ 124 ? Gas utility 103 87 ? Enterprises 15 12 ? Other reconciling items (16) (24) ? Total net income available to common stockholders  CMS Energy $ 241 $ 199 ? Consumers ? Net income available to common stockholder ? Electric utility $ 139 $ 124 ? Gas utility 103 87 ? Total net income available to common stockholder  Consumers $ 242 $ 211 ? ? ? ? In Millions ? March 31, 2018 December 31, 2017 ? CMS Energy, including Consumers ? Plant, property, and equipment, gross ? Electric utility 1 $ 15,432 $ 15,221 ? Gas utility 1 7,244 7,080 ? Enterprises 165 167 ? Other reconciling items 37 38 ? Total plant, property, and equipment, gross  CMS Energy $ 22,878 $ 22,506 ? Consumers ? Plant, property, and equipment, gross ? Electric utility 1 $ 15,432 $ 15,221 ? Gas utility 1 7,244 7,080 ? Other reconciling items 16 17 ? Total plant, property, and equipment, gross  Consumers $ 22,692 $ 22,318 ? CMS Energy, including Consumers ? Total assets ? Electric utility 1 $ 13,986 $ 13,906 ? Gas utility 1 6,941 7,139 ? Enterprises 348 342 ? Other reconciling items 1,593 1,663 ? Total assets  CMS Energy $ 22,868 $ 23,050 ? Consumers ? Total assets ? Electric utility 1 $ 13,986 $ 13,907 ? Gas utility 1 6,941 7,139 ? Other reconciling items 22 53 ? Total assets  Consumers $ 20,949 $ 21,099 ? 1 Amounts include a portion of Consumers other common assets attributable to both the electric and gas utility businesses.