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Reportable Segments (Tables) | 9 Months Ended
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Sep. 30, 2016
Schedule Of Financial Information By Reportable Segments |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿In Millions
﻿ | Three Months Ended |  | Nine Months Ended |
﻿September 30 | 2016 | 2015 |  | 2016 | 2015 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Electric utility |  | $ | 1,313 |  | $ | 1,233 |  |  | $ | 3,348 |  | $ | 3,273 |
﻿Gas utility |  |  | 185 |  |  | 184 |  |  |  | 1,166 |  |  | 1,453 |
﻿Enterprises |  |  | 59 |  |  | 43 |  |  |  | 156 |  |  | 148 |
﻿Other reconciling items |  |  | 30 |  |  | 26 |  |  |  | 89 |  |  | 73 |
﻿Total operating revenue – CMS Energy |  | $ | 1,587 |  | $ | 1,486 |  |  | $ | 4,759 |  | $ | 4,947 |
﻿Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Electric utility |  | $ | 1,313 |  | $ | 1,233 |  |  | $ | 3,348 |  | $ | 3,273 |
﻿Gas utility |  |  | 185 |  |  | 184 |  |  |  | 1,166 |  |  | 1,453 |
﻿Total operating revenue – Consumers |  | $ | 1,498 |  | $ | 1,417 |  |  | $ | 4,514 |  | $ | 4,726 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Net income (loss) available to common stockholders |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Electric utility |  | $ | 191 |  | $ | 166 |  |  | $ | 395 |  | $ | 342 |
﻿Gas utility |  |  | 3 |  |  | (7) |  |  |  | 102 |  |  | 115 |
﻿Enterprises |  |  | 8 |  |  | 3 |  |  |  | 17 |  |  | 10 |
﻿Other reconciling items |  |  | (16) |  |  | (14) |  |  |  | (40) |  |  | (50) |
﻿Total net income available to common stockholders – CMS Energy |  | $ | 186 |  | $ | 148 |  |  | $ | 474 |  | $ | 417 |
﻿Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Net income (loss) available to common stockholder |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Electric utility |  | $ | 191 |  | $ | 166 |  |  | $ | 395 |  | $ | 342 |
﻿Gas utility |  |  | 3 |  |  | (7) |  |  |  | 102 |  |  | 115 |
﻿Other reconciling items |  |  | 1 |  |  | 1 |  |  |  | 1 |  |  | 1 |
﻿Total net income available to common stockholder – Consumers |  | $ | 195 |  | $ | 160 |  |  | $ | 498 |  | $ | 458 |
﻿
﻿ |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |
﻿In Millions
﻿ | September 30, 2016 | December 31, 2015 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |
﻿Plant, property, and equipment, gross |  |  |  |  |  |  |
﻿Electric utility 1 |  | $ | 14,396 |  | $ | 13,059 |
﻿Gas utility 1 |  |  | 6,117 |  |  | 5,723 |
﻿Enterprises |  |  | 158 |  |  | 120 |
﻿Other reconciling items |  |  | 27 |  |  | 41 |
﻿Total plant, property, and equipment, gross – CMS Energy |  | $ | 20,698 |  | $ | 18,943 |
﻿Consumers |  |  |  |  |  |  |
﻿Plant, property, and equipment, gross |  |  |  |  |  |  |
﻿Electric utility 1 |  | $ | 14,396 |  | $ | 13,059 |
﻿Gas utility 1 |  |  | 6,117 |  |  | 5,723 |
﻿Other reconciling items |  |  | 15 |  |  | 15 |
﻿Total plant, property, and equipment, gross – Consumers |  | $ | 20,528 |  | $ | 18,797 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |
﻿Total assets |  |  |  |  |  |  |
﻿Electric utility 1 |  | $ | 12,892 |  | $ | 12,660 |
﻿Gas utility 1 |  |  | 6,033 |  |  | 5,912 |
﻿Enterprises |  |  | 273 |  |  | 270 |
﻿Other reconciling items |  |  | 1,644 |  |  | 1,457 |
﻿Total assets – CMS Energy 2 |  | $ | 20,842 |  | $ | 20,299 |
﻿Consumers |  |  |  |  |  |  |
﻿Total assets |  |  |  |  |  |  |
﻿Electric utility 1 |  | $ | 12,892 |  | $ | 12,660 |
﻿Gas utility 1 |  |  | 6,033 |  |  | 5,912 |
﻿Other reconciling items |  |  | 55 |  |  | 63 |
﻿Total assets – Consumers 2 |  | $ | 18,980 |  | $ | 18,635 |
﻿
| 1 |  | Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.
| 2 |  | CMS Energy and Consumers changed the reporting of debt issuance costs on their consolidated balance sheets in accordance with ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs, as of January 1, 2016, and retrospectively adjusted prior-period amounts for comparability. For further details on the implementation of this standard, see Note 1, New Accounting Standards.
Consumers Energy Company [Member] |
Schedule Of Financial Information By Reportable Segments |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿In Millions
﻿ | Three Months Ended |  | Nine Months Ended |
﻿September 30 | 2016 | 2015 |  | 2016 | 2015 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Electric utility |  | $ | 1,313 |  | $ | 1,233 |  |  | $ | 3,348 |  | $ | 3,273 |
﻿Gas utility |  |  | 185 |  |  | 184 |  |  |  | 1,166 |  |  | 1,453 |
﻿Enterprises |  |  | 59 |  |  | 43 |  |  |  | 156 |  |  | 148 |
﻿Other reconciling items |  |  | 30 |  |  | 26 |  |  |  | 89 |  |  | 73 |
﻿Total operating revenue – CMS Energy |  | $ | 1,587 |  | $ | 1,486 |  |  | $ | 4,759 |  | $ | 4,947 |
﻿Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Electric utility |  | $ | 1,313 |  | $ | 1,233 |  |  | $ | 3,348 |  | $ | 3,273 |
﻿Gas utility |  |  | 185 |  |  | 184 |  |  |  | 1,166 |  |  | 1,453 |
﻿Total operating revenue – Consumers |  | $ | 1,498 |  | $ | 1,417 |  |  | $ | 4,514 |  | $ | 4,726 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Net income (loss) available to common stockholders |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Electric utility |  | $ | 191 |  | $ | 166 |  |  | $ | 395 |  | $ | 342 |
﻿Gas utility |  |  | 3 |  |  | (7) |  |  |  | 102 |  |  | 115 |
﻿Enterprises |  |  | 8 |  |  | 3 |  |  |  | 17 |  |  | 10 |
﻿Other reconciling items |  |  | (16) |  |  | (14) |  |  |  | (40) |  |  | (50) |
﻿Total net income available to common stockholders – CMS Energy |  | $ | 186 |  | $ | 148 |  |  | $ | 474 |  | $ | 417 |
﻿Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Net income (loss) available to common stockholder |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Electric utility |  | $ | 191 |  | $ | 166 |  |  | $ | 395 |  | $ | 342 |
﻿Gas utility |  |  | 3 |  |  | (7) |  |  |  | 102 |  |  | 115 |
﻿Other reconciling items |  |  | 1 |  |  | 1 |  |  |  | 1 |  |  | 1 |
﻿Total net income available to common stockholder – Consumers |  | $ | 195 |  | $ | 160 |  |  | $ | 498 |  | $ | 458 |
﻿
﻿ |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |
﻿In Millions
﻿ | September 30, 2016 | December 31, 2015 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |
﻿Plant, property, and equipment, gross |  |  |  |  |  |  |
﻿Electric utility 1 |  | $ | 14,396 |  | $ | 13,059 |
﻿Gas utility 1 |  |  | 6,117 |  |  | 5,723 |
﻿Enterprises |  |  | 158 |  |  | 120 |
﻿Other reconciling items |  |  | 27 |  |  | 41 |
﻿Total plant, property, and equipment, gross – CMS Energy |  | $ | 20,698 |  | $ | 18,943 |
﻿Consumers |  |  |  |  |  |  |
﻿Plant, property, and equipment, gross |  |  |  |  |  |  |
﻿Electric utility 1 |  | $ | 14,396 |  | $ | 13,059 |
﻿Gas utility 1 |  |  | 6,117 |  |  | 5,723 |
﻿Other reconciling items |  |  | 15 |  |  | 15 |
﻿Total plant, property, and equipment, gross – Consumers |  | $ | 20,528 |  | $ | 18,797 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |
﻿Total assets |  |  |  |  |  |  |
﻿Electric utility 1 |  | $ | 12,892 |  | $ | 12,660 |
﻿Gas utility 1 |  |  | 6,033 |  |  | 5,912 |
﻿Enterprises |  |  | 273 |  |  | 270 |
﻿Other reconciling items |  |  | 1,644 |  |  | 1,457 |
﻿Total assets – CMS Energy 2 |  | $ | 20,842 |  | $ | 20,299 |
﻿Consumers |  |  |  |  |  |  |
﻿Total assets |  |  |  |  |  |  |
﻿Electric utility 1 |  | $ | 12,892 |  | $ | 12,660 |
﻿Gas utility 1 |  |  | 6,033 |  |  | 5,912 |
﻿Other reconciling items |  |  | 55 |  |  | 63 |
﻿Total assets – Consumers 2 |  | $ | 18,980 |  | $ | 18,635 |
﻿
| 1 |  | Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.
| 2 |  | CMS Energy and Consumers changed the reporting of debt issuance costs on their consolidated balance sheets in accordance with ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs, as of January 1, 2016, and retrospectively adjusted prior-period amounts for comparability. For further details on the implementation of this standard, see Note 1, New Accounting Standards.

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