? ? ? In Millions ? Three Months Ended Six Months Ended ? June 30 2017 2016 2017 2016 ? CMS Energy, including Consumers ? Operating revenue ? Electric utility $ 1,077 $ 1,022 $ 2,113 $ 2,035 ? Gas utility 285 271 986 981 ? Enterprises 55 49 114 97 ? Other reconciling items 32 29 65 59 ? Total operating revenue  CMS Energy $ 1,449 $ 1,371 $ 3,278 $ 3,172 ? Consumers ? Operating revenue ? Electric utility $ 1,077 $ 1,022 $ 2,113 $ 2,035 ? Gas utility 285 271 986 981 ? Total operating revenue  Consumers $ 1,362 $ 1,293 $ 3,099 $ 3,016 ? CMS Energy, including Consumers ? Net income (loss) available to common stockholders ? Electric utility $ 94 $ 113 $ 218 $ 204 ? Gas utility 9 18 96 99 ? Enterprises 7 3 19 9 ? Other reconciling items (18) (10) (42) (24) ? Total net income available to common stockholders  CMS Energy $ 92 $ 124 $ 291 $ 288 ? Consumers ? Net income available to common stockholder ? Electric utility $ 94 $ 113 $ 218 $ 204 ? Gas utility 9 18 96 99 ? Total net income available to common stockholder  Consumers $ 103 $ 131 $ 314 $ 303 ? ? ? ? In Millions ? June 30, 2017 December 31, 2016 ? CMS Energy, including Consumers ? Plant, property, and equipment, gross ? Electric utility 1 $ 14,937 $ 14,540 ? Gas utility 1 6,499 6,283 ? Enterprises 161 157 ? Other reconciling items 31 30 ? Total plant, property, and equipment, gross  CMS Energy $ 21,628 $ 21,010 ? Consumers ? Plant, property, and equipment, gross ? Electric utility 1 $ 14,937 $ 14,540 ? Gas utility 1 6,499 6,283 ? Other reconciling items 15 15 ? Total plant, property, and equipment, gross  Consumers $ 21,451 $ 20,838 ? CMS Energy, including Consumers ? Total assets ? Electric utility 1 $ 13,772 $ 13,429 ? Gas utility 1 6,393 6,446 ? Enterprises 270 269 ? Other reconciling items 1,432 1,478 ? Total assets  CMS Energy $ 21,867 $ 21,622 ? Consumers ? Total assets ? Electric utility 1 $ 13,774 $ 13,430 ? Gas utility 1 6,393 6,446 ? Other reconciling items 38 70 ? Total assets  Consumers $ 20,205 $ 19,946 ? 1 Amounts include a portion of Consume