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Financings And Capitalization (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Debt Instrument [Line Items] |
Summary Of Long-Term Debt Outstanding | Presented in the following table is CMS Energy’s long-term debt at December 31:
In Millions |
| Interest Rate (%) | Maturity | 2018 |  | 2017 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |
CMS Energy, parent only |  |  |  |  |  |  |  |
Senior notes | 8.750 |  | 2019 |  |  | $ | — |  |  | $ | 100 |
| 6.250 |  | 2020 |  |  | — |  |  | 300 |
| 5.050 |  | 2022 |  |  | 300 |  |  | 300 |
| 3.875 |  | 2024 |  |  | 250 |  |  | 250 |
| 3.600 |  | 2025 |  |  | 250 |  |  | 250 |
| 3.000 |  | 2026 |  |  | 300 |  |  | 300 |
| 2.950 |  | 2027 |  |  | 275 |  |  | 275 |
| 3.450 |  | 2027 |  |  | 350 |  |  | 350 |
| 4.700 |  | 2043 |  |  | 250 |  |  | 250 |
| 4.875 |  | 2044 |  |  | 300 |  |  | 300 |
Total senior notes |  |  |  |  |  | $ | 2,275 |  |  | $ | 2,675 |
Term loans and revolving credit agreements | variable | 1 | 2019 |  |  | 180 |  |  | 405 |
| variable | 2 | 2023 |  |  | 30 |  |  | — |
|  |  |  |  |  | $ | 210 |  |  | $ | 405 |
Junior subordinated notes | 5.625 |  | 2078 |  |  | 200 |  |  | — |
| 5.875 |  | 2078 |  |  | 280 |  |  | — |
|  |  |  |  |  | $ | 480 |  |  | $ | — |
Total CMS Energy, parent only |  |  |  |  |  | $ | 2,965 |  |  | $ | 3,080 |
CMS Energy subsidiaries |  |  |  |  |  |  |  |
CMS Enterprises, including subsidiaries |  |  |  |  |  |  |  |
Term loan facility | variable | 3 | 2025 | 3 |  | $ | 98 |  |  | $ | — |
EnerBank |  |  |  |  |  |  |  |
Certificates of deposit | 2.440 | 4 | 2019-2026 |  |  | 1,758 |  |  | 1,245 |
Consumers |  |  |  |  |  | 6,862 |  |  | 5,940 |
Total principal amount outstanding |  |  |  |  |  | $ | 11,683 |  |  | $ | 10,265 |
Current amounts |  |  |  |  |  | (974 | ) |  | (1,081 | )
Net unamortized discounts |  |  |  |  |  | (21 | ) |  | (14 | )
Unamortized issuance costs |  |  |  |  |  | (73 | ) |  | (47 | )
Total long-term debt |  |  |  |  |  | $ | 10,615 |  |  | $ | 9,123 |
1 | Outstanding borrowings bear interest at an annual interest rate of LIBOR plus 0.800 percent (3.322 percent at December 31, 2018).
2 | Outstanding borrowings bear interest at an annual interest rate of LIBOR plus 0.125 percent (3.669 percent at December 31, 2018).
3 | A subsidiary of CMS Enterprises issued non‑recourse debt to finance the acquisition of a wind generation project in northwest Ohio. The debt bears interest at an annual interest rate of LIBOR plus 1.500 percent through October 2022 (4.303 percent at December 31, 2018). Beginning in October 2022, the debt will bear interest at an annual interest rate of LIBOR plus 1.750 percent. The same subsidiary of CMS Enterprises entered into interest rate swaps with the lending banks to fix the interest charges associated with the debt, at a rate of 4.702 percent through October 2022 and 4.952 percent beginning in October 2022. Principal and interest payments are made quarterly.
4 | The weighted-average interest rate for EnerBank’s certificates of deposit was 2.440 percent at December 31, 2018 and 1.758 percent at December 31, 2017. EnerBank’s primary deposit product consists of brokered certificates of deposit with varying maturities and having a face value of $1,000.
Major Long-Term Debt Transactions | Presented in the following table is a summary of major long-term debt transactions during the year ended December 31, 2018:
| Principal (In Millions) |  | Interest Rate (%) | Issue/Retirement Date | Maturity Date
Debt issuances |  |  |  |  |
CMS Energy, parent only |  |  |  |  |
Junior subordinated notes 1 |  | $ | 200 |  | 5.625 | March 2018 | March 2078
Junior subordinated notes 1 |  | 250 |  | 5.875 | September 2018 | October 2078
Junior subordinated notes 1 |  | 30 |  | 5.875 | October 2018 | October 2078
Total CMS Energy, parent only |  | $ | 480 |  |  |  |
CMS Enterprises, including subsidiaries |  |  |  |  |
Term loan facility |  | $ | 100 |  | variable 2 | October 2018 | September 2025
Total CMS Enterprises, including subsidiaries |  | $ | 100 |  |  |  |
Consumers |  |  |  |  |
First mortgage bonds |  | $ | 550 |  | 4.050 | May 2018 | May 2048
First mortgage bonds |  | 100 |  | 3.680 | October 2018 | October 2027
First mortgage bonds |  | 215 |  | 4.010 | October 2018 | October 2038
First mortgage bonds |  | 185 |  | 4.280 | October 2018 | October 2057
First mortgage bonds |  | 300 |  | 3.800 | November 2018 | November 2028
First mortgage bonds |  | 550 |  | 4.350 | November 2018 | April 2049
Total Consumers |  | $ | 1,900 |  |  |  |
Total CMS Energy |  | $ | 2,480 |  |  |  |
Debt retirements |  |  |  |  |
CMS Energy, parent only |  |  |  |  |
Term loan facility |  | $ | 180 |  | variable | March 2018 | December 2018
Senior notes 3 |  | 100 |  | 8.750 | June 2018 | June 2019
Term loan facility |  | 45 |  | variable | August 2018 | December 2018
Senior notes 4 |  | 300 |  | 6.250 | October 2018 | February 2020
Total CMS Energy, parent only |  | $ | 625 |  |  |  |
Consumers |  |  |  |  |
Tax-exempt pollution control revenue bonds |  | $ | 68 |  | variable | April 2018 | April 2018
First mortgage bonds |  | 250 |  | 5.650 | May 2018 | September 2018
First mortgage bonds |  | 350 |  | 6.125 | November 2018 | March 2019
First mortgage bonds |  | 500 |  | 6.700 | November 2018 | September 2019
Total Consumers |  | $ | 1,168 |  |  |  |
Total CMS Energy |  | $ | 1,793 |  |  |  |
1 | These unsecured obligations rank subordinate and junior in right of payment to all of CMS Energy’s existing and future senior indebtedness.
2 | A subsidiary of CMS Enterprises entered into interest rate swaps with the lending banks to fix the interest charges associated with the debt.
3 | CMS Energy retired these senior notes at a premium and recorded a loss on extinguishment of $5 million in other expense on its consolidated statements of income.
4 | CMS Energy retired these senior notes at a premium and recorded a loss on extinguishment of $11 million in other expense on its consolidated statements of income.
Debt Maturities | At December 31, 2018, the aggregate annual contractual maturities for long-term debt for the next five years were:
In Millions |
| 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Long-term debt |  | $ | 974 |  |  | $ | 1,007 |  |  | $ | 310 |  |  | $ | 1,146 |  |  | $ | 546 |
Consumers |  |  |  |  |  |  |  |  |  |
Long-term debt |  | $ | 26 |  |  | $ | 626 |  |  | $ | 27 |  |  | $ | 653 |  |  | $ | 369 |
Revolving Credit Facilities | The following revolving credit facilities with banks were available at December 31, 2018:
In Millions |
Expiration Date | Amount of Facility |  | Amount Borrowed |  | Letters of Credit Outstanding |  | Amount Available |
CMS Energy, parent only |  |  |  |  |  |  |  |
June 5, 2023 1,2 |  | $ | 550 |  |  | $ | 30 |  |  | $ | 1 |  |  | $ | 519 |
CMS Enterprises, including subsidiaries |  |  |  |  |  |  |  |
September 30, 2025 3 |  | $ | 18 |  |  | $ | — |  |  | $ | 8 |  |  | $ | 10 |
Consumers 4 |  |  |  |  |  |  |  |
June 5, 2023 5 |  | $ | 850 |  |  | $ | 15 |  |  | $ | 7 |  |  | $ | 828 |
November 19, 2020 6 |  | 250 |  |  | 200 |  |  | 35 |  |  | 15 |
September 9, 2019 |  | 30 |  |  | — |  |  | 30 |  |  | — |
1 | During the year ended December 31, 2018, CMS Energy’s average borrowings totaled $15 million with a weighted-average interest rate of 2.997 percent. In January 2019, CMS Energy increased its borrowings under this facility to $73 million.
2 | In June 2018, CMS Energy amended its $550 million revolving credit facility, eliminating the security provided by Consumers common stock, and extending the expiration date to June 2023.
3 | Under this facility, $8 million is available solely for the purpose of issuing letters of credit. Obligations under this facility are secured by the collateral accounts with the lending bank.
4 | Obligations under these facilities are secured by first mortgage bonds of Consumers. During the year ended December 31, 2018, Consumers’ average borrowings totaled $3 million with a weighted-average interest rate of 3.505 percent.
5 | In June 2018, Consumers amended this revolving credit facility by increasing its borrowing capacity to $850 million and extending the expiration date to June 2023. In January 2019, Consumers repaid $15 million of borrowings under this facility.
6 | In November 2018, Consumers amended this revolving credit facility by extending the expiration date to November 2020. In January 2019, Consumers repaid $200 million of borrowings under this facility.
Schedule of Stock by Class | Presented in the following table are the transactions that CMS Energy entered into under the program:
| Number of Shares Issued |  | Net Proceeds (In Millions) |
May 2018 | 638,898 |  |  | $ | 29 |
June 2017 | 1,494,371 |  |  | 70 |
Schedule of Forward Contracts | Presented in the following table are the details of the forward equity sale contracts:
Maturity Date | Number of Shares |  | Initial Forward Price Per Share |
May 16, 2020 | 2,017,783 |  |  | $ | 49.06 |
May 20, 2020 | 777,899 |  |  | 50.91 |
Consumers Energy Company |
Debt Instrument [Line Items] |
Summary Of Long-Term Debt Outstanding | Presented in the following table is Consumers’ long-term debt at December 31:
In Millions |
| Interest Rate (%) | Maturity | 2018 |  | 2017 |
Consumers |  |  |  |  |  |  |  |
First mortgage bonds | 5.650 |  | 2018 |  |  | $ | — |  |  | $ | 250 |
| 6.125 |  | 2019 |  |  | — |  |  | 350 |
| 6.700 |  | 2019 |  |  | — |  |  | 500 |
| 5.650 |  | 2020 |  |  | 300 |  |  | 300 |
| 3.770 |  | 2020 |  |  | 100 |  |  | 100 |
| 2.850 |  | 2022 |  |  | 375 |  |  | 375 |
| 5.300 |  | 2022 |  |  | 250 |  |  | 250 |
| 3.375 |  | 2023 |  |  | 325 |  |  | 325 |
| 3.125 |  | 2024 |  |  | 250 |  |  | 250 |
| 3.190 |  | 2024 |  |  | 52 |  |  | 52 |
| 3.680 |  | 2027 |  |  | 100 |  |  | — |
| 3.390 |  | 2027 |  |  | 35 |  |  | 35 |
| 3.800 |  | 2028 |  |  | 300 |  |  | — |
| 3.180 |  | 2032 |  |  | 100 |  |  | 100 |
| 5.800 |  | 2035 |  |  | 175 |  |  | 175 |
| 3.520 |  | 2037 |  |  | 335 |  |  | 335 |
| 4.010 |  | 2038 |  |  | 215 |  |  | — |
| 6.170 |  | 2040 |  |  | 50 |  |  | 50 |
| 4.970 |  | 2040 |  |  | 50 |  |  | 50 |
| 4.310 |  | 2042 |  |  | 263 |  |  | 263 |
| 3.950 |  | 2043 |  |  | 425 |  |  | 425 |
| 4.100 |  | 2045 |  |  | 250 |  |  | 250 |
| 3.250 |  | 2046 |  |  | 450 |  |  | 450 |
| 3.950 |  | 2047 |  |  | 350 |  |  | 350 |
| 4.050 |  | 2048 |  |  | 550 |  |  | — |
| 4.350 |  | 2049 |  |  | 550 |  |  | — |
| 3.860 |  | 2052 |  |  | 50 |  |  | 50 |
| 4.280 |  | 2057 |  |  | 185 |  |  | — |
| 4.350 |  | 2064 |  |  | 250 |  |  | 250 |
Total first mortgage bonds |  |  |  |  |  | $ | 6,335 |  |  | $ | 5,535 |
Securitization bonds | 3.057 | 1 | 2020-2029 | 2 |  | 277 |  |  | 302 |
Revolving credit agreements | variable | 3 | 2020-2023 |  |  | 215 |  |  | — |
Tax-exempt pollution control revenue bond | variable |  | 2035 |  |  | 35 |  |  | 103 |
Total principal amount outstanding |  |  |  |  |  | $ | 6,862 |  |  | $ | 5,940 |
Current amounts |  |  |  |  |  | (26 | ) |  | (343 | )
Net unamortized discounts |  |  |  |  |  | (16 | ) |  | (8 | )
Unamortized issuance costs |  |  |  |  |  | (41 | ) |  | (28 | )
Total long-term debt |  |  |  |  |  | $ | 6,779 |  |  | $ | 5,561 |
1 | The weighted-average interest rate for Consumers’ securitization bonds issued through its subsidiary Consumers 2014 Securitization Funding was 3.057 percent at December 31, 2018 and 2.913 percent at December 31, 2017.
2 | Principal and interest payments are made semiannually.
3 | The weighted-average interest rate for Consumers’ revolving credit facilities was 3.331 percent at December 31, 2018. There were no outstanding borrowings at December 31, 2017.
Major Long-Term Debt Transactions | Presented in the following table is a summary of major long-term debt transactions during the year ended December 31, 2018:
| Principal (In Millions) |  | Interest Rate (%) | Issue/Retirement Date | Maturity Date
Debt issuances |  |  |  |  |
CMS Energy, parent only |  |  |  |  |
Junior subordinated notes 1 |  | $ | 200 |  | 5.625 | March 2018 | March 2078
Junior subordinated notes 1 |  | 250 |  | 5.875 | September 2018 | October 2078
Junior subordinated notes 1 |  | 30 |  | 5.875 | October 2018 | October 2078
Total CMS Energy, parent only |  | $ | 480 |  |  |  |
CMS Enterprises, including subsidiaries |  |  |  |  |
Term loan facility |  | $ | 100 |  | variable 2 | October 2018 | September 2025
Total CMS Enterprises, including subsidiaries |  | $ | 100 |  |  |  |
Consumers |  |  |  |  |
First mortgage bonds |  | $ | 550 |  | 4.050 | May 2018 | May 2048
First mortgage bonds |  | 100 |  | 3.680 | October 2018 | October 2027
First mortgage bonds |  | 215 |  | 4.010 | October 2018 | October 2038
First mortgage bonds |  | 185 |  | 4.280 | October 2018 | October 2057
First mortgage bonds |  | 300 |  | 3.800 | November 2018 | November 2028
First mortgage bonds |  | 550 |  | 4.350 | November 2018 | April 2049
Total Consumers |  | $ | 1,900 |  |  |  |
Total CMS Energy |  | $ | 2,480 |  |  |  |
Debt retirements |  |  |  |  |
CMS Energy, parent only |  |  |  |  |
Term loan facility |  | $ | 180 |  | variable | March 2018 | December 2018
Senior notes 3 |  | 100 |  | 8.750 | June 2018 | June 2019
Term loan facility |  | 45 |  | variable | August 2018 | December 2018
Senior notes 4 |  | 300 |  | 6.250 | October 2018 | February 2020
Total CMS Energy, parent only |  | $ | 625 |  |  |  |
Consumers |  |  |  |  |
Tax-exempt pollution control revenue bonds |  | $ | 68 |  | variable | April 2018 | April 2018
First mortgage bonds |  | 250 |  | 5.650 | May 2018 | September 2018
First mortgage bonds |  | 350 |  | 6.125 | November 2018 | March 2019
First mortgage bonds |  | 500 |  | 6.700 | November 2018 | September 2019
Total Consumers |  | $ | 1,168 |  |  |  |
Total CMS Energy |  | $ | 1,793 |  |  |  |
1 | These unsecured obligations rank subordinate and junior in right of payment to all of CMS Energy’s existing and future senior indebtedness.
2 | A subsidiary of CMS Enterprises entered into interest rate swaps with the lending banks to fix the interest charges associated with the debt.
3 | CMS Energy retired these senior notes at a premium and recorded a loss on extinguishment of $5 million in other expense on its consolidated statements of income.
4 | CMS Energy retired these senior notes at a premium and recorded a loss on extinguishment of $11 million in other expense on its consolidated statements of income.
Debt Maturities | At December 31, 2018, the aggregate annual contractual maturities for long-term debt for the next five years were:
In Millions |
| 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |
Long-term debt |  | $ | 974 |  |  | $ | 1,007 |  |  | $ | 310 |  |  | $ | 1,146 |  |  | $ | 546 |
Consumers |  |  |  |  |  |  |  |  |  |
Long-term debt |  | $ | 26 |  |  | $ | 626 |  |  | $ | 27 |  |  | $ | 653 |  |  | $ | 369 |
Revolving Credit Facilities | The following revolving credit facilities with banks were available at December 31, 2018:
In Millions |
Expiration Date | Amount of Facility |  | Amount Borrowed |  | Letters of Credit Outstanding |  | Amount Available |
CMS Energy, parent only |  |  |  |  |  |  |  |
June 5, 2023 1,2 |  | $ | 550 |  |  | $ | 30 |  |  | $ | 1 |  |  | $ | 519 |
CMS Enterprises, including subsidiaries |  |  |  |  |  |  |  |
September 30, 2025 3 |  | $ | 18 |  |  | $ | — |  |  | $ | 8 |  |  | $ | 10 |
Consumers 4 |  |  |  |  |  |  |  |
June 5, 2023 5 |  | $ | 850 |  |  | $ | 15 |  |  | $ | 7 |  |  | $ | 828 |
November 19, 2020 6 |  | 250 |  |  | 200 |  |  | 35 |  |  | 15 |
September 9, 2019 |  | 30 |  |  | — |  |  | 30 |  |  | — |
1 | During the year ended December 31, 2018, CMS Energy’s average borrowings totaled $15 million with a weighted-average interest rate of 2.997 percent. In January 2019, CMS Energy increased its borrowings under this facility to $73 million.
2 | In June 2018, CMS Energy amended its $550 million revolving credit facility, eliminating the security provided by Consumers common stock, and extending the expiration date to June 2023.
3 | Under this facility, $8 million is available solely for the purpose of issuing letters of credit. Obligations under this facility are secured by the collateral accounts with the lending bank.
4 | Obligations under these facilities are secured by first mortgage bonds of Consumers. During the year ended December 31, 2018, Consumers’ average borrowings totaled $3 million with a weighted-average interest rate of 3.505 percent.
5 | In June 2018, Consumers amended this revolving credit facility by increasing its borrowing capacity to $850 million and extending the expiration date to June 2023. In January 2019, Consumers repaid $15 million of borrowings under this facility.
6 | In November 2018, Consumers amended this revolving credit facility by extending the expiration date to November 2020. In January 2019, Consumers repaid $200 million of borrowings under this facility.
Preferred Stock | Presented in the following table are details of Consumers’ preferred stock at December 31, 2018 and 2017:
| Par Value |  | Optional Redemption Price |  | Number of Shares Authorized |  | Number of Shares Outstanding |
Cumulative, with no mandatory redemption |  | $ | 100 |  |  | $ | 110 |  | 7,500,000 |  | 373,148 |

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