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Reportable Segments | 12 Months Ended
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Dec. 31, 2015
Reportable Segments | 17:R eportable Segments Reportable segments consist of business units defined by the products and services they offer. CMS Energy and Consumers evaluate the performance of each segment based on its contribution to net income available to CMS Energy’s common stockholders. Accounting policies for CMS Energy’s and Consumers’ segments are as described in Note 1, Significant Accounting Policies. The consolidated financial statements reflect the assets, liabilities, revenues, and expenses of the individual segments when appropriate. Accounts are allocated among the segments when common accounts are attributable to more than one segment. The allocations are based on certain measures of business activities, such as revenue, labor dollars, customers, other operation and maintenance expense, construction expense, leased property, taxes, or functional surveys. For example, customer receivables are allocated based on revenue, and pension provisions are allocated based on labor dollars. Inter-segment sales and transfers are accounted for at current market prices and are eliminated in consolidated net income available to common stockholders by segment. CMS Energy The reportable segments for CMS Energy are:
| · |  | electric utility, consisting of regulated activities associated with the generation, transmission, and distribution of electricity in Michigan
| · |  | gas utility, consisting of regulated activities associated with the transportation, storage, and distribution of natural gas in Michigan
| · |  | enterprises, consisting of various subsidiaries engaging primarily in domestic independent power product ion
CMS Energy presents EnerBank and corporate interest and other expenses within other reconciling items. Consumers The reportable segments for Consumers are:
| · |  | electric utility, consisting of regulated activities associated with the generation, transmission, and distribution of electricity in Michigan
| · |  | gas utility, consisting of regulated activities associated with the transportation, storage, and distribu tion of natural gas in Michigan
Consumers’ other consolidated entities are presented within other reconciling items. Presented in the following tables is financial information by reportable segment:
In Millions
Years Ended December 31 | 2015 | 2014 | 2013 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Operating revenue |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 4,249 |  | $ | 4,436 |  | $ | 4,173 |
Gas utility |  |  | 1,916 |  |  | 2,363 |  |  | 2,148 |
Enterprises |  |  | 190 |  |  | 299 |  |  | 181 |
Other reconciling items |  |  | 101 |  |  | 81 |  |  | 64 |
Total operating revenue – CMS Energy |  | $ | 6,456 |  | $ | 7,179 |  | $ | 6,566 |
Consumers |  |  |  |  |  |  |  |  |  |
Operating revenue |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 4,249 |  | $ | 4,436 |  | $ | 4,173 |
Gas utility |  |  | 1,916 |  |  | 2,363 |  |  | 2,148 |
Other reconciling items |  |  | - |  |  | 1 |  |  | - |
Total operating revenue – Consumers |  | $ | 6,165 |  | $ | 6,800 |  | $ | 6,321 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 567 |  | $ | 522 |  | $ | 484 |
Gas utility |  |  | 177 |  |  | 156 |  |  | 138 |
Enterprises |  |  | 4 |  |  | 4 |  |  | 3 |
Other reconciling items |  |  | 2 |  |  | 3 |  |  | 3 |
Total depreciation and amortization – CMS Energy |  | $ | 750 |  | $ | 685 |  | $ | 628 |
Consumers |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 567 |  | $ | 522 |  | $ | 484 |
Gas utility |  |  | 177 |  |  | 156 |  |  | 138 |
Total depreciation and amortization – Consumers |  | $ | 744 |  | $ | 678 |  | $ | 622 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Income from equity method investees 1 |  |  |  |  |  |  |  |  |  |
Enterprises |  | $ | 14 |  | $ | 15 |  | $ | 13 |
Total income from equity method investees – CMS Energy |  | $ | 14 |  | $ | 15 |  | $ | 13 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Interest charges |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 178 |  | $ | 181 |  | $ | 179 |
Gas utility |  |  | 71 |  |  | 67 |  |  | 64 |
Other reconciling items |  |  | 147 |  |  | 159 |  |  | 155 |
Total interest charges – CMS Energy |  | $ | 396 |  | $ | 407 |  | $ | 398 |
Consumers |  |  |  |  |  |  |  |  |  |
Interest charges |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 178 |  | $ | 181 |  | $ | 179 |
Gas utility |  |  | 71 |  |  | 67 |  |  | 64 |
Other reconciling items |  |  | 1 |  |  | 2 |  |  | 2 |
Total interest charges – Consumers |  | $ | 250 |  | $ | 250 |  | $ | 245 |
In Millions
Years Ended December 31 | 2015 | 2014 | 2013 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 224 |  | $ | 211 |  | $ | 242 |
Gas utility |  |  | 78 |  |  | 95 |  |  | 104 |
Enterprises |  |  | 3 |  |  | (1) |  |  | (4) |
Other reconciling items |  |  | (34) |  |  | (55) |  |  | (40) |
Total income tax expense – CMS Energy |  | $ | 271 |  | $ | 250 |  | $ | 302 |
Consumers |  |  |  |  |  |  |  |  |  |
Income tax expense |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 224 |  | $ | 211 |  | $ | 242 |
Gas utility |  |  | 78 |  |  | 95 |  |  | 104 |
Total income tax expense – Consumers |  | $ | 302 |  | $ | 306 |  | $ | 346 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 437 |  | $ | 384 |  | $ | 363 |
Gas utility |  |  | 154 |  |  | 179 |  |  | 168 |
Enterprises |  |  | 4 |  |  | (1) |  |  | 2 |
Other reconciling items |  |  | (72) |  |  | (85) |  |  | (81) |
Total net income available to common stockholders – CMS Energy |  | $ | 523 |  | $ | 477 |  | $ | 452 |
Consumers |  |  |  |  |  |  |  |  |  |
Net income available to common stockholder |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 437 |  | $ | 384 |  | $ | 363 |
Gas utility |  |  | 154 |  |  | 179 |  |  | 168 |
Other reconciling items |  |  | 1 |  |  | 2 |  |  | 1 |
Total net income available to common stockholder – Consumers |  | $ | 592 |  | $ | 565 |  | $ | 532 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Plant, property, and equipment, gross |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 13,059 |  | $ | 12,230 |  | $ | 11,186 |
Gas utility |  |  | 5,723 |  |  | 5,335 |  |  | 4,843 |
Enterprises |  |  | 120 |  |  | 115 |  |  | 115 |
Other reconciling items |  |  | 41 |  |  | 41 |  |  | 40 |
Total plant, property, and equipment, gross – CMS Energy |  | $ | 18,943 |  | $ | 17,721 |  | $ | 16,184 |
Consumers |  |  |  |  |  |  |  |  |  |
Plant, property, and equipment, gross |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 13,059 |  | $ | 12,230 |  | $ | 11,186 |
Gas utility |  |  | 5,723 |  |  | 5,335 |  |  | 4,843 |
Other reconciling items |  |  | 15 |  |  | 15 |  |  | 15 |
Total plant, property, and equipment, gross – Consumers |  | $ | 18,797 |  | $ | 17,580 |  | $ | 16,044 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Investments in equity method investees 1 |  |  |  |  |  |  |  |  |  |
Enterprises |  | $ | 61 |  | $ | 58 |  | $ | 57 |
Other reconciling items |  |  | 3 |  |  | 3 |  |  | 2 |
Total investments in equity method investees – CMS Energy |  | $ | 64 |  | $ | 61 |  | $ | 59 |
In Millions
Years Ended December 31 | 2015 | 2014 | 2013 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Total assets |  |  |  |  |  |  |  |  |  |
Electric utility 2 |  | $ | 12,676 |  | $ | 11,582 |  | $ | 10,487 |
Gas utility 2 |  |  | 5,918 |  |  | 5,391 |  |  | 4,784 |
Enterprises |  |  | 270 |  |  | 231 |  |  | 231 |
Other reconciling items |  |  | 1,476 |  |  | 1,981 |  |  | 1,788 |
Total assets – CMS Energy |  | $ | 20,340 |  | $ | 19,185 |  | $ | 17,290 |
Consumers |  |  |  |  |  |  |  |  |  |
Total assets |  |  |  |  |  |  |  |  |  |
Electric utility 2 |  | $ | 12,676 |  | $ | 11,582 |  | $ | 10,487 |
Gas utility 2 |  |  | 5,918 |  |  | 5,391 |  |  | 4,784 |
Other reconciling items |  |  | 64 |  |  | 874 |  |  | 908 |
Total assets – Consumers |  | $ | 18,658 |  | $ | 17,847 |  | $ | 16,179 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Capital expenditures 3 |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 1,136 |  | $ | 1,139 |  | $ | 996 |
Gas utility |  |  | 558 |  |  | 473 |  |  | 407 |
Enterprises |  |  | 44 |  |  | 3 |  |  | 1 |
Other reconciling items |  |  | 3 |  |  | 1 |  |  | 4 |
Total capital expenditures – CMS Energy |  | $ | 1,741 |  | $ | 1,616 |  | $ | 1,408 |
Consumers |  |  |  |  |  |  |  |  |  |
Capital expenditures 3 |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 1,136 |  | $ | 1,139 |  | $ | 996 |
Gas utility |  |  | 558 |  |  | 473 |  |  | 407 |
Total capital expenditures – Consumers |  | $ | 1,694 |  | $ | 1,612 |  | $ | 1,403 |
| 1 |  | Consumers had no significant equity method investments.
| 2 |  | Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.
| 3 |  | Amounts include purchase of capital lease additions. Amounts also include a portion of Consumers’ capital expenditures for plant and equipment attributable to both the electric and gas utility businesses.
Consumers Energy Company [Member] |
Reportable Segments | 17:R eportable Segments Reportable segments consist of business units defined by the products and services they offer. CMS Energy and Consumers evaluate the performance of each segment based on its contribution to net income available to CMS Energy’s common stockholders. Accounting policies for CMS Energy’s and Consumers’ segments are as described in Note 1, Significant Accounting Policies. The consolidated financial statements reflect the assets, liabilities, revenues, and expenses of the individual segments when appropriate. Accounts are allocated among the segments when common accounts are attributable to more than one segment. The allocations are based on certain measures of business activities, such as revenue, labor dollars, customers, other operation and maintenance expense, construction expense, leased property, taxes, or functional surveys. For example, customer receivables are allocated based on revenue, and pension provisions are allocated based on labor dollars. Inter-segment sales and transfers are accounted for at current market prices and are eliminated in consolidated net income available to common stockholders by segment. CMS Energy The reportable segments for CMS Energy are:
| · |  | electric utility, consisting of regulated activities associated with the generation, transmission, and distribution of electricity in Michigan
| · |  | gas utility, consisting of regulated activities associated with the transportation, storage, and distribution of natural gas in Michigan
| · |  | enterprises, consisting of various subsidiaries engaging primarily in domestic independent power product ion
CMS Energy presents EnerBank and corporate interest and other expenses within other reconciling items. Consumers The reportable segments for Consumers are:
| · |  | electric utility, consisting of regulated activities associated with the generation, transmission, and distribution of electricity in Michigan
| · |  | gas utility, consisting of regulated activities associated with the transportation, storage, and distribu tion of natural gas in Michigan
Consumers’ other consolidated entities are presented within other reconciling items. Presented in the following tables is financial information by reportable segment:
In Millions
Years Ended December 31 | 2015 | 2014 | 2013 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Operating revenue |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 4,249 |  | $ | 4,436 |  | $ | 4,173 |
Gas utility |  |  | 1,916 |  |  | 2,363 |  |  | 2,148 |
Enterprises |  |  | 190 |  |  | 299 |  |  | 181 |
Other reconciling items |  |  | 101 |  |  | 81 |  |  | 64 |
Total operating revenue – CMS Energy |  | $ | 6,456 |  | $ | 7,179 |  | $ | 6,566 |
Consumers |  |  |  |  |  |  |  |  |  |
Operating revenue |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 4,249 |  | $ | 4,436 |  | $ | 4,173 |
Gas utility |  |  | 1,916 |  |  | 2,363 |  |  | 2,148 |
Other reconciling items |  |  | - |  |  | 1 |  |  | - |
Total operating revenue – Consumers |  | $ | 6,165 |  | $ | 6,800 |  | $ | 6,321 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 567 |  | $ | 522 |  | $ | 484 |
Gas utility |  |  | 177 |  |  | 156 |  |  | 138 |
Enterprises |  |  | 4 |  |  | 4 |  |  | 3 |
Other reconciling items |  |  | 2 |  |  | 3 |  |  | 3 |
Total depreciation and amortization – CMS Energy |  | $ | 750 |  | $ | 685 |  | $ | 628 |
Consumers |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 567 |  | $ | 522 |  | $ | 484 |
Gas utility |  |  | 177 |  |  | 156 |  |  | 138 |
Total depreciation and amortization – Consumers |  | $ | 744 |  | $ | 678 |  | $ | 622 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Income from equity method investees 1 |  |  |  |  |  |  |  |  |  |
Enterprises |  | $ | 14 |  | $ | 15 |  | $ | 13 |
Total income from equity method investees – CMS Energy |  | $ | 14 |  | $ | 15 |  | $ | 13 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Interest charges |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 178 |  | $ | 181 |  | $ | 179 |
Gas utility |  |  | 71 |  |  | 67 |  |  | 64 |
Other reconciling items |  |  | 147 |  |  | 159 |  |  | 155 |
Total interest charges – CMS Energy |  | $ | 396 |  | $ | 407 |  | $ | 398 |
Consumers |  |  |  |  |  |  |  |  |  |
Interest charges |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 178 |  | $ | 181 |  | $ | 179 |
Gas utility |  |  | 71 |  |  | 67 |  |  | 64 |
Other reconciling items |  |  | 1 |  |  | 2 |  |  | 2 |
Total interest charges – Consumers |  | $ | 250 |  | $ | 250 |  | $ | 245 |
In Millions
Years Ended December 31 | 2015 | 2014 | 2013 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 224 |  | $ | 211 |  | $ | 242 |
Gas utility |  |  | 78 |  |  | 95 |  |  | 104 |
Enterprises |  |  | 3 |  |  | (1) |  |  | (4) |
Other reconciling items |  |  | (34) |  |  | (55) |  |  | (40) |
Total income tax expense – CMS Energy |  | $ | 271 |  | $ | 250 |  | $ | 302 |
Consumers |  |  |  |  |  |  |  |  |  |
Income tax expense |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 224 |  | $ | 211 |  | $ | 242 |
Gas utility |  |  | 78 |  |  | 95 |  |  | 104 |
Total income tax expense – Consumers |  | $ | 302 |  | $ | 306 |  | $ | 346 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 437 |  | $ | 384 |  | $ | 363 |
Gas utility |  |  | 154 |  |  | 179 |  |  | 168 |
Enterprises |  |  | 4 |  |  | (1) |  |  | 2 |
Other reconciling items |  |  | (72) |  |  | (85) |  |  | (81) |
Total net income available to common stockholders – CMS Energy |  | $ | 523 |  | $ | 477 |  | $ | 452 |
Consumers |  |  |  |  |  |  |  |  |  |
Net income available to common stockholder |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 437 |  | $ | 384 |  | $ | 363 |
Gas utility |  |  | 154 |  |  | 179 |  |  | 168 |
Other reconciling items |  |  | 1 |  |  | 2 |  |  | 1 |
Total net income available to common stockholder – Consumers |  | $ | 592 |  | $ | 565 |  | $ | 532 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Plant, property, and equipment, gross |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 13,059 |  | $ | 12,230 |  | $ | 11,186 |
Gas utility |  |  | 5,723 |  |  | 5,335 |  |  | 4,843 |
Enterprises |  |  | 120 |  |  | 115 |  |  | 115 |
Other reconciling items |  |  | 41 |  |  | 41 |  |  | 40 |
Total plant, property, and equipment, gross – CMS Energy |  | $ | 18,943 |  | $ | 17,721 |  | $ | 16,184 |
Consumers |  |  |  |  |  |  |  |  |  |
Plant, property, and equipment, gross |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 13,059 |  | $ | 12,230 |  | $ | 11,186 |
Gas utility |  |  | 5,723 |  |  | 5,335 |  |  | 4,843 |
Other reconciling items |  |  | 15 |  |  | 15 |  |  | 15 |
Total plant, property, and equipment, gross – Consumers |  | $ | 18,797 |  | $ | 17,580 |  | $ | 16,044 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Investments in equity method investees 1 |  |  |  |  |  |  |  |  |  |
Enterprises |  | $ | 61 |  | $ | 58 |  | $ | 57 |
Other reconciling items |  |  | 3 |  |  | 3 |  |  | 2 |
Total investments in equity method investees – CMS Energy |  | $ | 64 |  | $ | 61 |  | $ | 59 |
In Millions
Years Ended December 31 | 2015 | 2014 | 2013 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Total assets |  |  |  |  |  |  |  |  |  |
Electric utility 2 |  | $ | 12,676 |  | $ | 11,582 |  | $ | 10,487 |
Gas utility 2 |  |  | 5,918 |  |  | 5,391 |  |  | 4,784 |
Enterprises |  |  | 270 |  |  | 231 |  |  | 231 |
Other reconciling items |  |  | 1,476 |  |  | 1,981 |  |  | 1,788 |
Total assets – CMS Energy |  | $ | 20,340 |  | $ | 19,185 |  | $ | 17,290 |
Consumers |  |  |  |  |  |  |  |  |  |
Total assets |  |  |  |  |  |  |  |  |  |
Electric utility 2 |  | $ | 12,676 |  | $ | 11,582 |  | $ | 10,487 |
Gas utility 2 |  |  | 5,918 |  |  | 5,391 |  |  | 4,784 |
Other reconciling items |  |  | 64 |  |  | 874 |  |  | 908 |
Total assets – Consumers |  | $ | 18,658 |  | $ | 17,847 |  | $ | 16,179 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Capital expenditures 3 |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 1,136 |  | $ | 1,139 |  | $ | 996 |
Gas utility |  |  | 558 |  |  | 473 |  |  | 407 |
Enterprises |  |  | 44 |  |  | 3 |  |  | 1 |
Other reconciling items |  |  | 3 |  |  | 1 |  |  | 4 |
Total capital expenditures – CMS Energy |  | $ | 1,741 |  | $ | 1,616 |  | $ | 1,408 |
Consumers |  |  |  |  |  |  |  |  |  |
Capital expenditures 3 |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 1,136 |  | $ | 1,139 |  | $ | 996 |
Gas utility |  |  | 558 |  |  | 473 |  |  | 407 |
Total capital expenditures – Consumers |  | $ | 1,694 |  | $ | 1,612 |  | $ | 1,403 |
| 1 |  | Consumers had no significant equity method investments.
| 2 |  | Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.
| 3 |  | Amounts include purchase of capital lease additions. Amounts also include a portion of Consumers’ capital expenditures for plant and equipment attributable to both the electric and gas utility businesses.

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