Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
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| Amortization of net actuarial loss TAX | $ 0 | $ 0 | $ 0 | $ 0 |
| Amortization of prior service credit (TAX BENEFIT) | 0 | 0 | 0 | 0 |
| Unrealized loss on investments (TAX BENEFIT) | 0 | 0 | 0 | 0 |
| Reclassification adjustments included in net income TAX (TAX BENEFIT) | 0 | 0 | 0 | 0 |
| Unrealized loss on derivative instruments (TAX BENEFIT) | 0 | (1) | ||
| Unrealized loss on derivative instruments (TAX BENEFIT) | 0 | 0 | ||
| Consumers Energy Company | ||||
| Amortization of net actuarial loss TAX | 0 | 0 | 0 | 0 |
| Unrealized loss on investments (TAX BENEFIT) | 0 | 0 | 0 | 0 |
| Reclassification adjustments included in net income TAX (TAX BENEFIT) | $ 0 | $ 0 | $ 0 | $ 0 |
Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions |
Sep. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Accounts receivable and accrued revenue ALLOWANCE | $ 21 | $ 20 |
| Accounts and notes receivable ALLOWANCE | $ 33 | $ 24 |
| Common stock, authorized (in shares) | 350,000,000.0 | 350,000,000.0 |
| Common stock, outstanding (in shares) | 283,800,000 | 283,400,000 |
| Preferred stock, par value (in dollars per share) | $ 4.50 | $ 4.50 |
| Consumers Energy Company | ||
| Accounts receivable and accrued revenue ALLOWANCE | $ 21 | $ 20 |
| Common stock, authorized (in shares) | 125,000,000.0 | 125,000,000 |
| Common stock, outstanding (in shares) | 84,100,000 | 84,100,000 |
New Accounting Standards |
9 Months Ended |
|---|---|
Sep. 30, 2019 | |
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |
| New Accounting Standards | New Accounting Standards Implementation of New Accounting Standards ASU 2016‑02, Leases: This standard, which was effective on January 1, 2019 for CMS Energy and Consumers, establishes a new accounting model for leases. The standard requires lessees to recognize lease assets and liabilities on the balance sheet for all leases with a term of more than one year, including operating leases, which were not recorded on the balance sheet under previous standards. The new guidance also amends the definition of a lease to require that a lessee have the right to control the use of a specified asset, and not simply control or take the output of the asset. On the statement of income, operating leases are generally accounted for under a straight-line expense model, while finance leases, which were previously referred to as capital leases, are generally accounted for under a financing model. Consistent with the previous lease guidance, however, the standard allows rate-regulated utilities to recognize expense consistent with the timing of recovery in rates. CMS Energy and Consumers elected to use certain practical expedients permitted by the standard, under which they were not required to perform lease assessments or reassessments for agreements existing on the effective date. They also elected a transition method under which they initially applied the standard on January 1, 2019, without adjusting amounts presented for prior periods. Under the standard, CMS Energy and Consumers recognized additional lease assets and liabilities on their consolidated balance sheets as of January 1, 2019 for their operating leases. In addition, in accordance with the standard, they have provided additional disclosures about their leases in Note 8, Leases. The standard did not have any impact on CMS Energy’s and Consumers’ consolidated net income or cash flows, and there was no cumulative-effect adjustment recorded to beginning retained earnings. New Accounting Standards Not Yet Effective ASU 2016‑13, Measurement of Credit Losses on Financial Instruments: This standard, which will be effective January 1, 2020 for CMS Energy and Consumers, provides new guidance for measuring and recognizing credit losses on financial instruments. The standard applies to financial assets that are not measured at fair value through net income. Entities will apply the standard using a modified retrospective approach, with a cumulative‑effect adjustment recorded to beginning retained earnings on the effective date. The standard will require an increase to the allowance for loan losses at EnerBank. The allowance presently reflects expected credit losses over a 12-month period, but the new standard will require the allowance to reflect expected credit losses over the entire life of the loans. EnerBank will record the initial increase to the allowance on January 1, 2020, with the offsetting adjustment recorded to retained earnings. The standard will also require an increase in the initial provision for loan losses recognized in net income for new loans originated in 2020 and beyond. At Consumers, the new guidance will apply to the allowance for uncollectible accounts; however, Consumers does not expect material impacts in this area. CMS Energy and Consumers are continuing to evaluate the standard.
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| Consumers Energy Company | |
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |
| New Accounting Standards | New Accounting Standards Implementation of New Accounting Standards ASU 2016‑02, Leases: This standard, which was effective on January 1, 2019 for CMS Energy and Consumers, establishes a new accounting model for leases. The standard requires lessees to recognize lease assets and liabilities on the balance sheet for all leases with a term of more than one year, including operating leases, which were not recorded on the balance sheet under previous standards. The new guidance also amends the definition of a lease to require that a lessee have the right to control the use of a specified asset, and not simply control or take the output of the asset. On the statement of income, operating leases are generally accounted for under a straight-line expense model, while finance leases, which were previously referred to as capital leases, are generally accounted for under a financing model. Consistent with the previous lease guidance, however, the standard allows rate-regulated utilities to recognize expense consistent with the timing of recovery in rates. CMS Energy and Consumers elected to use certain practical expedients permitted by the standard, under which they were not required to perform lease assessments or reassessments for agreements existing on the effective date. They also elected a transition method under which they initially applied the standard on January 1, 2019, without adjusting amounts presented for prior periods. Under the standard, CMS Energy and Consumers recognized additional lease assets and liabilities on their consolidated balance sheets as of January 1, 2019 for their operating leases. In addition, in accordance with the standard, they have provided additional disclosures about their leases in Note 8, Leases. The standard did not have any impact on CMS Energy’s and Consumers’ consolidated net income or cash flows, and there was no cumulative-effect adjustment recorded to beginning retained earnings. New Accounting Standards Not Yet Effective ASU 2016‑13, Measurement of Credit Losses on Financial Instruments: This standard, which will be effective January 1, 2020 for CMS Energy and Consumers, provides new guidance for measuring and recognizing credit losses on financial instruments. The standard applies to financial assets that are not measured at fair value through net income. Entities will apply the standard using a modified retrospective approach, with a cumulative‑effect adjustment recorded to beginning retained earnings on the effective date. The standard will require an increase to the allowance for loan losses at EnerBank. The allowance presently reflects expected credit losses over a 12-month period, but the new standard will require the allowance to reflect expected credit losses over the entire life of the loans. EnerBank will record the initial increase to the allowance on January 1, 2020, with the offsetting adjustment recorded to retained earnings. The standard will also require an increase in the initial provision for loan losses recognized in net income for new loans originated in 2020 and beyond. At Consumers, the new guidance will apply to the allowance for uncollectible accounts; however, Consumers does not expect material impacts in this area. CMS Energy and Consumers are continuing to evaluate the standard.
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Regulatory Matters |
9 Months Ended | ||||||||||||
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Sep. 30, 2019 | |||||||||||||
| Public Utilities, General Disclosures [Line Items] | |||||||||||||
| Regulatory Matters | Regulatory Matters Regulatory matters are critical to Consumers. The Michigan Attorney General, ABATE, the MPSC Staff, and certain other parties typically participate in MPSC proceedings concerning Consumers, such as Consumers’ rate cases and PSCR and GCR processes. These parties often challenge various aspects of those proceedings, including the prudence of Consumers’ policies and practices, and seek cost disallowances and other relief. The parties also have appealed significant MPSC orders. Depending upon the specific issues, the outcomes of rate cases and proceedings, including judicial proceedings challenging MPSC orders or other actions, could negatively affect CMS Energy’s and Consumers’ liquidity, financial condition, and results of operations. Consumers cannot predict the outcome of these proceedings. There are multiple appeals pending that involve various issues concerning cost recovery from customers, the adequacy of the record of evidence supporting the recovery of Smart Energy investments, and other matters. Consumers is unable to predict the outcome of these appeals. 2017 Electric Rate Case: In June 2018, the MPSC issued an order authorizing an annual rate increase of $72 million, based on a 10.0 percent authorized return on equity. In July 2018, Consumers filed a reconciliation of total revenues collected from rates it self‑implemented in October 2017 to those that would have been collected under final rates. In August 2019, the MPSC approved a $34 million refund to customers, which was refunded in September 2019. Consumers had recorded this amount as a reserve for customer refunds at December 31, 2018. 2018 Electric Rate Case: In May 2018, Consumers filed an application with the MPSC seeking an annual rate increase of $58 million, based on a 10.75 percent authorized return on equity. The filing requested authority to recover new investment in system reliability, environmental compliance, and technology enhancements. In October 2018, Consumers reduced its requested annual rate increase to $44 million. In January 2019, the MPSC approved a settlement agreement authorizing an annual rate decrease of $24 million, based on a 10.0 percent authorized return on equity. With the elimination of the $113 million TCJA credit to customer bills, the approved settlement agreement resulted in an $89 million net increase in annual rates. The settlement agreement also provided for deferred accounting treatment for distribution‑related capital investments exceeding certain amounts. Consumers also agreed to not file a new electric rate case prior to January 2020. 2018 Gas Rate Case: In November 2018, Consumers filed an application with the MPSC seeking an annual rate increase of $229 million, based on a 10.75 percent authorized return on equity. In April 2019, Consumers reduced its requested annual rate increase to $204 million. In September 2019, the MPSC approved an annual rate increase of $144 million, based on a 9.90 percent authorized return on equity. This increase includes a $13 million adjustment to begin returning net regulatory tax liabilities associated with the TCJA to customers. The MPSC also approved the continuation of a revenue decoupling mechanism, which annually reconciles Consumers’ actual weather‑normalized, non‑fuel revenues with the revenues approved by the MPSC. Tax Cuts and Jobs Act: The TCJA, which changed existing federal tax law and included numerous provisions that affect businesses, was signed into law in December 2017. In early 2018, the MPSC ordered Consumers to file various proceedings to determine the reduction in its electric and gas revenue requirements as a result of the reduction in the corporate income tax rate, and to implement bill credits to reflect that reduction until customer rates could be adjusted through Consumers’ general rate cases. Consumers filed, and the MPSC approved, such proceedings throughout 2018, resulting in credits to customer bills during 2018 to reflect reductions in Consumers’ electric and gas revenue requirements. Consumers filed additional proceedings to address amounts collected from customers during 2018 prior to the implementation of bill credits. In late 2018, the MPSC approved the refund of $31 million to gas customers over six months beginning in December 2018 and the refund of $70 million to electric customers over six months beginning in January 2019. In October 2018, Consumers filed an application to address the December 31, 2017 remeasurement of its deferred income taxes and other base rate impacts of the TCJA on customers. In September 2019, the MPSC authorized Consumers to begin returning net regulatory tax liabilities of $0.4 billion to gas customers through rates approved in the 2018 gas rate case and $1.2 billion to electric customers through rates to be determined in Consumers’ next electric rate case. Until then, the MPSC authorized Consumers to refund $32 million to electric customers through a temporary bill credit. Consumers’ total $1.6 billion of net regulatory tax liabilities comprises:
In January 2018, Consumers began to reduce the regulatory liability subject to normalization by crediting income tax expense. Consumers fully reserved for the eventual refund of these excess deferred taxes that it credited to income tax expense in a separate non‑current regulatory liability established by reducing revenue. As a result of an order received in September 2019, Consumers began refunding these excess deferred taxes to customers and will no longer reserve for their refund. At the date of the order, this reserve for refund of these excess deferred taxes totaled $62 million. For additional details on the remeasurement, see Note 10, Income Taxes. Costs of Coal-fueled Electric Generating Units to be Retired: In June 2019, the MPSC approved the settlement agreement reached in Consumers’ IRP, under which Consumers plans to retire the D.E. Karn 1 & 2 coal-fueled electric generating units in 2023. Under Michigan law, electric utilities have been permitted to use highly rated, low-cost securitization bonds to finance the recovery of qualified costs. Consumers will file for securitization financing by May 2023, requesting the MPSC’s approval to securitize qualified costs of $657 million, representing the remaining book value in 2023 of the two coal-fueled electric generating units upon their retirement. In June 2019, Consumers removed this amount from plant, property, and equipment and recorded it as a regulatory asset. Until securitization, the book value of the generating units will remain in rate base and receive full regulatory returns in general rate cases. Energy Waste Reduction Plan Incentive: Consumers filed its 2018 waste reduction reconciliation in May 2019, requesting the MPSC’s approval to collect from customers the maximum performance incentive of $34 million for exceeding its statutory savings targets in 2018. Consumers recognized incentive revenue under this program of $34 million in 2018.
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| Consumers Energy Company | |||||||||||||
| Public Utilities, General Disclosures [Line Items] | |||||||||||||
| Regulatory Matters | Regulatory Matters Regulatory matters are critical to Consumers. The Michigan Attorney General, ABATE, the MPSC Staff, and certain other parties typically participate in MPSC proceedings concerning Consumers, such as Consumers’ rate cases and PSCR and GCR processes. These parties often challenge various aspects of those proceedings, including the prudence of Consumers’ policies and practices, and seek cost disallowances and other relief. The parties also have appealed significant MPSC orders. Depending upon the specific issues, the outcomes of rate cases and proceedings, including judicial proceedings challenging MPSC orders or other actions, could negatively affect CMS Energy’s and Consumers’ liquidity, financial condition, and results of operations. Consumers cannot predict the outcome of these proceedings. There are multiple appeals pending that involve various issues concerning cost recovery from customers, the adequacy of the record of evidence supporting the recovery of Smart Energy investments, and other matters. Consumers is unable to predict the outcome of these appeals. 2017 Electric Rate Case: In June 2018, the MPSC issued an order authorizing an annual rate increase of $72 million, based on a 10.0 percent authorized return on equity. In July 2018, Consumers filed a reconciliation of total revenues collected from rates it self‑implemented in October 2017 to those that would have been collected under final rates. In August 2019, the MPSC approved a $34 million refund to customers, which was refunded in September 2019. Consumers had recorded this amount as a reserve for customer refunds at December 31, 2018. 2018 Electric Rate Case: In May 2018, Consumers filed an application with the MPSC seeking an annual rate increase of $58 million, based on a 10.75 percent authorized return on equity. The filing requested authority to recover new investment in system reliability, environmental compliance, and technology enhancements. In October 2018, Consumers reduced its requested annual rate increase to $44 million. In January 2019, the MPSC approved a settlement agreement authorizing an annual rate decrease of $24 million, based on a 10.0 percent authorized return on equity. With the elimination of the $113 million TCJA credit to customer bills, the approved settlement agreement resulted in an $89 million net increase in annual rates. The settlement agreement also provided for deferred accounting treatment for distribution‑related capital investments exceeding certain amounts. Consumers also agreed to not file a new electric rate case prior to January 2020. 2018 Gas Rate Case: In November 2018, Consumers filed an application with the MPSC seeking an annual rate increase of $229 million, based on a 10.75 percent authorized return on equity. In April 2019, Consumers reduced its requested annual rate increase to $204 million. In September 2019, the MPSC approved an annual rate increase of $144 million, based on a 9.90 percent authorized return on equity. This increase includes a $13 million adjustment to begin returning net regulatory tax liabilities associated with the TCJA to customers. The MPSC also approved the continuation of a revenue decoupling mechanism, which annually reconciles Consumers’ actual weather‑normalized, non‑fuel revenues with the revenues approved by the MPSC. Tax Cuts and Jobs Act: The TCJA, which changed existing federal tax law and included numerous provisions that affect businesses, was signed into law in December 2017. In early 2018, the MPSC ordered Consumers to file various proceedings to determine the reduction in its electric and gas revenue requirements as a result of the reduction in the corporate income tax rate, and to implement bill credits to reflect that reduction until customer rates could be adjusted through Consumers’ general rate cases. Consumers filed, and the MPSC approved, such proceedings throughout 2018, resulting in credits to customer bills during 2018 to reflect reductions in Consumers’ electric and gas revenue requirements. Consumers filed additional proceedings to address amounts collected from customers during 2018 prior to the implementation of bill credits. In late 2018, the MPSC approved the refund of $31 million to gas customers over six months beginning in December 2018 and the refund of $70 million to electric customers over six months beginning in January 2019. In October 2018, Consumers filed an application to address the December 31, 2017 remeasurement of its deferred income taxes and other base rate impacts of the TCJA on customers. In September 2019, the MPSC authorized Consumers to begin returning net regulatory tax liabilities of $0.4 billion to gas customers through rates approved in the 2018 gas rate case and $1.2 billion to electric customers through rates to be determined in Consumers’ next electric rate case. Until then, the MPSC authorized Consumers to refund $32 million to electric customers through a temporary bill credit. Consumers’ total $1.6 billion of net regulatory tax liabilities comprises:
In January 2018, Consumers began to reduce the regulatory liability subject to normalization by crediting income tax expense. Consumers fully reserved for the eventual refund of these excess deferred taxes that it credited to income tax expense in a separate non‑current regulatory liability established by reducing revenue. As a result of an order received in September 2019, Consumers began refunding these excess deferred taxes to customers and will no longer reserve for their refund. At the date of the order, this reserve for refund of these excess deferred taxes totaled $62 million. For additional details on the remeasurement, see Note 10, Income Taxes. Costs of Coal-fueled Electric Generating Units to be Retired: In June 2019, the MPSC approved the settlement agreement reached in Consumers’ IRP, under which Consumers plans to retire the D.E. Karn 1 & 2 coal-fueled electric generating units in 2023. Under Michigan law, electric utilities have been permitted to use highly rated, low-cost securitization bonds to finance the recovery of qualified costs. Consumers will file for securitization financing by May 2023, requesting the MPSC’s approval to securitize qualified costs of $657 million, representing the remaining book value in 2023 of the two coal-fueled electric generating units upon their retirement. In June 2019, Consumers removed this amount from plant, property, and equipment and recorded it as a regulatory asset. Until securitization, the book value of the generating units will remain in rate base and receive full regulatory returns in general rate cases. Energy Waste Reduction Plan Incentive: Consumers filed its 2018 waste reduction reconciliation in May 2019, requesting the MPSC’s approval to collect from customers the maximum performance incentive of $34 million for exceeding its statutory savings targets in 2018. Consumers recognized incentive revenue under this program of $34 million in 2018.
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Contingencies and Commitments |
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| Contingencies and Commitments | Contingencies and Commitments CMS Energy and Consumers are involved in various matters that give rise to contingent liabilities. Depending on the specific issues, the resolution of these contingencies could negatively affect CMS Energy’s and Consumers’ liquidity, financial condition, and results of operations. In their disclosures of these matters, CMS Energy and Consumers provide an estimate of the possible loss or range of loss when such an estimate can be made. Disclosures that state that CMS Energy or Consumers cannot predict the outcome of a matter indicate that they are unable to estimate a possible loss or range of loss for the matter. CMS Energy Contingencies Gas Index Price Reporting Litigation: CMS Energy, along with CMS MST, CMS Field Services, Cantera Natural Gas, Inc., and Cantera Gas Company, were named as defendants in four class action lawsuits and one individual lawsuit arising as a result of alleged inaccurate natural gas price reporting to publications that report trade information. Allegations include price‑fixing conspiracies, restraint of trade, and artificial inflation of natural gas retail prices in Kansas, Missouri, and Wisconsin. In 2016, CMS Energy entities reached a settlement with the plaintiffs in the Kansas and Missouri class action cases for an amount that was not material to CMS Energy. In 2017, the federal district court approved the settlement. Plaintiffs are making claims for the following: treble damages, full consideration damages, exemplary damages, costs, interest, and/or attorneys’ fees. After removal to federal court, all of the cases were transferred to a single federal district court pursuant to the multidistrict litigation process. In 2010 and 2011, all claims against CMS Energy defendants were dismissed by the district court based on FERC preemption. In 2013, the U.S. Court of Appeals for the Ninth Circuit reversed the district court decision. The appellate court found that FERC preemption does not apply under the facts of these cases. The appellate court affirmed the district court’s denial of leave to amend to add federal antitrust claims. The matter was appealed to the U.S. Supreme Court, which in 2015 upheld the Ninth Circuit’s decision. The cases were remanded back to the federal district court. In 2016, the federal district court granted the defendants’ motion for summary judgment in the individual lawsuit filed in Kansas based on a release in a prior settlement involving similar allegations; the order of summary judgment was subsequently appealed. In March 2018, the U.S. Court of Appeals for the Ninth Circuit reversed the lower court’s ruling and remanded the case back to the federal district court. In 2017, the federal district court denied plaintiffs’ motion for class certification in the two pending class action cases in Wisconsin. The plaintiffs appealed that decision to the U.S. Court of Appeals for the Ninth Circuit and in August 2018, the Ninth Circuit Court of Appeals reversed and remanded the matter back to the federal district court for further consideration. In January 2019, the judge in the multidistrict litigation granted motions filed by plaintiffs for Suggestion of Remand of the actions back to the respective transferor courts in Wisconsin and Kansas for further handling. In the Kansas action, the Judicial Panel on Multidistrict Litigation ordered the remand and the case has been transferred. In the Wisconsin actions, oppositions to the remand were filed, but the Judicial Panel on Multidistrict Litigation granted the remand in June 2019. These cases involve complex facts, a large number of similarly situated defendants with different factual positions, and multiple jurisdictions. Presently, any estimate of liability would be highly speculative; the amount of CMS Energy’s reasonably possible loss would be based on widely varying models previously untested in this context. If the outcome after appeals is unfavorable, these cases could negatively affect CMS Energy’s liquidity, financial condition, and results of operations. Bay Harbor: CMS Land retained environmental remediation obligations for the collection and treatment of leachate, a liquid consisting of water and other substances, at Bay Harbor after selling its interests in the development in 2002. Leachate is produced when water enters into cement kiln dust piles left over from former cement plant operations at the site. In 2012, CMS Land and EGLE finalized an agreement that established the final remedies and the future water quality criteria at the site. CMS Land completed all construction necessary to implement the remedies required by the agreement and will continue to maintain and operate a system to discharge treated leachate into Little Traverse Bay under an NPDES permit issued in 2010 and renewed in 2016. The renewed NPDES permit is valid through September 2020. At September 30, 2019, CMS Energy had a recorded liability of $44 million for its remaining obligations for environmental remediation. CMS Energy calculated this liability based on discounted projected costs, using a discount rate of 4.34 percent and an inflation rate of one percent on annual operating and maintenance costs. The undiscounted amount of the remaining obligation is $56 million. CMS Energy expects to pay the following amounts for long‑term liquid disposal and operating and maintenance costs during the remainder of 2019 and in each of the next five years:
CMS Energy’s estimate of response activity costs and the timing of expenditures could change if there are changes in circumstances or assumptions used in calculating the liability. Although a liability for its present estimate of remaining response activity costs has been recorded, CMS Energy cannot predict the ultimate financial impact or outcome of this matter. Equatorial Guinea Tax Claim: In 2002, CMS Energy sold its oil, gas, and methanol investments in Equatorial Guinea. The government of Equatorial Guinea claims that, in connection with the sale, CMS Energy owes $152 million in taxes, plus substantial penalties and interest that could be up to or exceed the amount of the taxes claimed. In 2015, the matter was proceeding to formal arbitration; however, since then, the government of Equatorial Guinea has stopped communicating. CMS Energy has concluded that the government’s tax claim is without merit and will continue to contest the claim, but cannot predict the financial impact or outcome of the matter. An unfavorable outcome could have a material adverse effect on CMS Energy’s liquidity, financial condition, and results of operations. Consumers Electric Utility Contingencies Electric Environmental Matters: Consumers’ operations are subject to environmental laws and regulations. Historically, Consumers has generally been able to recover, in customer rates, the costs to operate its facilities in compliance with these laws and regulations. Cleanup and Solid Waste: Consumers expects to incur remediation and other response activity costs at a number of sites under the NREPA. Consumers believes that these costs should be recoverable in rates, but cannot guarantee that outcome. Consumers estimates that its liability for NREPA sites for which it can estimate a range of loss will be between $3 million and $4 million. At September 30, 2019, Consumers had a recorded liability of $3 million, the minimum amount in the range of its estimated probable NREPA liability, as no amount in the range was considered a better estimate than any other amount. Consumers is a potentially responsible party at a number of contaminated sites administered under CERCLA. CERCLA liability is joint and several. In 2010, Consumers received official notification from the EPA that identified Consumers as a potentially responsible party for cleanup of PCBs at the Kalamazoo River CERCLA site. The notification claimed that the EPA has reason to believe that Consumers disposed of PCBs and arranged for the disposal and treatment of PCB‑containing materials at portions of the site. In 2011, Consumers received a follow‑up letter from the EPA requesting that Consumers agree to participate in a removal action plan along with several other companies for an area of lower Portage Creek, which is connected to the Kalamazoo River. All parties, including Consumers, that were asked to participate in the removal action plan declined to accept liability. Until further information is received from the EPA, Consumers is unable to estimate a range of potential liability for cleanup of the river. Based on its experience, Consumers estimates that its share of the total liability for known CERCLA sites will be between $3 million and $8 million. Various factors, including the number and creditworthiness of potentially responsible parties involved with each site, affect Consumers’ share of the total liability. At September 30, 2019, Consumers had a recorded liability of $3 million for its share of the total liability at these sites, the minimum amount in the range of its estimated probable CERCLA liability, as no amount in the range was considered a better estimate than any other amount. The timing of payments related to Consumers’ remediation and other response activities at its CERCLA and NREPA sites is uncertain. Consumers periodically reviews these cost estimates. A change in the underlying assumptions, such as an increase in the number of sites, different remediation techniques, the nature and extent of contamination, and legal and regulatory requirements, could affect its estimates of NREPA and CERCLA liability. Ludington PCB: In 1998, during routine maintenance activities, Consumers identified PCB as a component in certain paint, grout, and sealant materials at Ludington. Consumers removed part of the PCB material and replaced it with non‑PCB material. Consumers has had several communications with the EPA regarding this matter, but cannot predict the financial impact or outcome. MCV PPA: In December 2017, the MCV Partnership initiated arbitration against Consumers, asserting a breach of contract associated with the MCV PPA. Under this PPA, Consumers pays the MCV Partnership a fixed energy charge based on Consumers’ annual average baseload coal generating plant operating and maintenance cost, fuel inventory, and administrative and general expenses. The MCV Partnership asserts that, under the Clean Air Act, Consumers should have installed pollution control equipment on coal‑fueled electric generating units years before they were retired. The MCV Partnership also asserts that Consumers should have installed pollution control equipment earlier on its remaining coal‑fueled electric generating units. Additionally, the MCV Partnership claims that Consumers improperly characterized certain costs included in the calculation of the fixed energy charge. In January 2019, an arbitration panel issued an order concluding that the MCV Partnership is not entitled to any damages associated with its claim against Consumers related to the Clean Air Act; the majority of the MCV Partnership’s claim, which estimated damages and interest in excess of $270 million, was related to this dismissed claim. Consumers believes that the MCV Partnership’s remaining claims are without merit, but cannot predict the financial impact or outcome of the matter. Underwater Cables in Straits of Mackinac: Consumers owns certain underwater electric cables in the Straits of Mackinac, which were de‑energized and retired in 1990. Consumers was notified that some of these cables were damaged as a result of vessel activity in April 2018. Following the notification, Consumers located, inspected, sampled, capped, and returned the damaged retired cables to their original location on the lake bottom, and did not find any substantive evidence of environmental contamination. Consumers is collaborating with the State of Michigan, local Native American tribes, and other stakeholders to evaluate the status of the cables and to determine if any additional action is advisable. Consumers cannot predict the outcome of this matter, but if Consumers is required to remove all the cables, it could incur additional costs of up to $10 million. Consumers filed suit against the companies that own the vessels that allegedly caused the damage and settled that matter. Consumers will seek recovery from customers of any costs incurred. Consumers Gas Utility Contingencies Gas Environmental Matters: Consumers expects to incur remediation and other response activity costs at a number of sites under the NREPA. These sites include 23 former MGP facilities. Consumers operated the facilities on these sites for some part of their operating lives. For some of these sites, Consumers has no present ownership interest or may own only a portion of the original site. At September 30, 2019, Consumers had a recorded liability of $70 million for its remaining obligations for these sites. This amount represents the present value of long‑term projected costs, using a discount rate of 2.57 percent and an inflation rate of 2.5 percent. The undiscounted amount of the remaining obligation is $72 million. Consumers expects to pay the following amounts for remediation and other response activity costs during the remainder of 2019 and in each of the next five years:
Consumers periodically reviews these cost estimates. Any significant change in the underlying assumptions, such as an increase in the number of sites, changes in remediation techniques, or legal and regulatory requirements, could affect Consumers’ estimates of annual response activity costs and the MGP liability. Pursuant to orders issued by the MPSC, Consumers defers its MGP‑related remediation costs and recovers them from its customers over a ten‑year period. At September 30, 2019, Consumers had a regulatory asset of $132 million related to the MGP sites. Consumers estimates that its liability to perform remediation and other response activities at NREPA sites other than the MGP sites could reach $3 million. At September 30, 2019, Consumers had a recorded liability of less than $1 million, the minimum amount in the range of its estimated probable liability, as no amount in the range was considered a better estimate than any other amount. Ray Compressor Station: On January 30, 2019, Consumers experienced a fire at the Ray Compressor Station, which resulted in the Ray Storage Field being off‑line or operating at significantly reduced capacity, which negatively affected Consumers’ natural gas supply and delivery capacity. This incident, which occurred during the extreme polar vortex weather condition, required Consumers to request voluntary reductions in customer load, to implement contingency gas supply purchases, and to implement a curtailment of natural gas deliveries for industrial and large commercial customers pursuant to Consumers’ MPSC curtailment tariff. The curtailment and request for voluntary reductions of customer loads were canceled as of midnight, February 1, 2019. Consumers investigated the cause of the incident, and filed a report on the incident with the MPSC in April 2019. In response, the MPSC issued an order in July 2019, directing Consumers to file additional reports regarding the incident and to include detail of the resulting costs in a future rate proceeding. As a result of the fire and the resulting curtailment, Consumers could be subject to various claims from impacted customers or claims for damages. Consumers may also be subject to regulatory penalties and disallowances of gas purchased, gas lost, and costs associated with the repairs to the Ray Compressor Station. At this time, Consumers cannot predict the outcome of these matters or other gas-related incidents and a reasonable estimate of any loss cannot be made, but they could have a material adverse effect on Consumers’ results of operations, financial condition, or liquidity, and could subject Consumers’ gas utility to increased regulatory scrutiny. Consumers Electric and Gas Utility Contingencies Electric and Gas Staking: In June 2019, the MPSC ordered Consumers to show cause as to why it should not be found in violation of the MISS DIG Act. The MPSC alleges that Consumers violated the law by failing to respond in a timely manner to over 20,000 requests to mark the location of underground facilities in April and May 2019 and only partially responding to others. The law provides the MPSC with discretion in setting fines for violations, if any; however, the fines cannot exceed $5,000 per violation. An order by the MPSC in this proceeding is not expected until mid-2020. Consumers has resolved the backlog of staking requests. Consumers cannot predict the outcome of this matter, but it could be subject to regulatory penalties that have a material adverse effect on Consumers’ results of operations, financial condition, or liquidity, and Consumers could be subject to increased regulatory scrutiny. Guarantees Presented in the following table are CMS Energy’s and Consumers’ guarantees at September 30, 2019:
Additionally, in the normal course of business, CMS Energy, Consumers, and certain other subsidiaries of CMS Energy have entered into various agreements containing tax and other indemnity provisions for which they are unable to estimate the maximum potential obligation. The carrying value of these indemnity obligations is $1 million. CMS Energy and Consumers consider the likelihood that they would be required to perform or incur substantial losses related to these indemnities to be remote. Other Contingencies In addition to the matters disclosed in this Note and Note 2, Regulatory Matters, there are certain other lawsuits and administrative proceedings before various courts and governmental agencies, as well as unasserted claims that may result in such proceedings, arising in the ordinary course of business to which CMS Energy, Consumers, and certain other subsidiaries of CMS Energy are parties. These other lawsuits, proceedings, and unasserted claims may involve personal injury, property damage, contracts, environmental matters, federal and state taxes, rates, licensing, employment, and other matters. Further, CMS Energy and Consumers occasionally self‑report certain regulatory non‑compliance matters that may or may not eventually result in administrative proceedings. CMS Energy and Consumers believe that the outcome of any one of these proceedings and potential claims will not have a material negative effect on their consolidated results of operations, financial condition, or liquidity.
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| Contingencies and Commitments | Contingencies and Commitments CMS Energy and Consumers are involved in various matters that give rise to contingent liabilities. Depending on the specific issues, the resolution of these contingencies could negatively affect CMS Energy’s and Consumers’ liquidity, financial condition, and results of operations. In their disclosures of these matters, CMS Energy and Consumers provide an estimate of the possible loss or range of loss when such an estimate can be made. Disclosures that state that CMS Energy or Consumers cannot predict the outcome of a matter indicate that they are unable to estimate a possible loss or range of loss for the matter. CMS Energy Contingencies Gas Index Price Reporting Litigation: CMS Energy, along with CMS MST, CMS Field Services, Cantera Natural Gas, Inc., and Cantera Gas Company, were named as defendants in four class action lawsuits and one individual lawsuit arising as a result of alleged inaccurate natural gas price reporting to publications that report trade information. Allegations include price‑fixing conspiracies, restraint of trade, and artificial inflation of natural gas retail prices in Kansas, Missouri, and Wisconsin. In 2016, CMS Energy entities reached a settlement with the plaintiffs in the Kansas and Missouri class action cases for an amount that was not material to CMS Energy. In 2017, the federal district court approved the settlement. Plaintiffs are making claims for the following: treble damages, full consideration damages, exemplary damages, costs, interest, and/or attorneys’ fees. After removal to federal court, all of the cases were transferred to a single federal district court pursuant to the multidistrict litigation process. In 2010 and 2011, all claims against CMS Energy defendants were dismissed by the district court based on FERC preemption. In 2013, the U.S. Court of Appeals for the Ninth Circuit reversed the district court decision. The appellate court found that FERC preemption does not apply under the facts of these cases. The appellate court affirmed the district court’s denial of leave to amend to add federal antitrust claims. The matter was appealed to the U.S. Supreme Court, which in 2015 upheld the Ninth Circuit’s decision. The cases were remanded back to the federal district court. In 2016, the federal district court granted the defendants’ motion for summary judgment in the individual lawsuit filed in Kansas based on a release in a prior settlement involving similar allegations; the order of summary judgment was subsequently appealed. In March 2018, the U.S. Court of Appeals for the Ninth Circuit reversed the lower court’s ruling and remanded the case back to the federal district court. In 2017, the federal district court denied plaintiffs’ motion for class certification in the two pending class action cases in Wisconsin. The plaintiffs appealed that decision to the U.S. Court of Appeals for the Ninth Circuit and in August 2018, the Ninth Circuit Court of Appeals reversed and remanded the matter back to the federal district court for further consideration. In January 2019, the judge in the multidistrict litigation granted motions filed by plaintiffs for Suggestion of Remand of the actions back to the respective transferor courts in Wisconsin and Kansas for further handling. In the Kansas action, the Judicial Panel on Multidistrict Litigation ordered the remand and the case has been transferred. In the Wisconsin actions, oppositions to the remand were filed, but the Judicial Panel on Multidistrict Litigation granted the remand in June 2019. These cases involve complex facts, a large number of similarly situated defendants with different factual positions, and multiple jurisdictions. Presently, any estimate of liability would be highly speculative; the amount of CMS Energy’s reasonably possible loss would be based on widely varying models previously untested in this context. If the outcome after appeals is unfavorable, these cases could negatively affect CMS Energy’s liquidity, financial condition, and results of operations. Bay Harbor: CMS Land retained environmental remediation obligations for the collection and treatment of leachate, a liquid consisting of water and other substances, at Bay Harbor after selling its interests in the development in 2002. Leachate is produced when water enters into cement kiln dust piles left over from former cement plant operations at the site. In 2012, CMS Land and EGLE finalized an agreement that established the final remedies and the future water quality criteria at the site. CMS Land completed all construction necessary to implement the remedies required by the agreement and will continue to maintain and operate a system to discharge treated leachate into Little Traverse Bay under an NPDES permit issued in 2010 and renewed in 2016. The renewed NPDES permit is valid through September 2020. At September 30, 2019, CMS Energy had a recorded liability of $44 million for its remaining obligations for environmental remediation. CMS Energy calculated this liability based on discounted projected costs, using a discount rate of 4.34 percent and an inflation rate of one percent on annual operating and maintenance costs. The undiscounted amount of the remaining obligation is $56 million. CMS Energy expects to pay the following amounts for long‑term liquid disposal and operating and maintenance costs during the remainder of 2019 and in each of the next five years:
CMS Energy’s estimate of response activity costs and the timing of expenditures could change if there are changes in circumstances or assumptions used in calculating the liability. Although a liability for its present estimate of remaining response activity costs has been recorded, CMS Energy cannot predict the ultimate financial impact or outcome of this matter. Equatorial Guinea Tax Claim: In 2002, CMS Energy sold its oil, gas, and methanol investments in Equatorial Guinea. The government of Equatorial Guinea claims that, in connection with the sale, CMS Energy owes $152 million in taxes, plus substantial penalties and interest that could be up to or exceed the amount of the taxes claimed. In 2015, the matter was proceeding to formal arbitration; however, since then, the government of Equatorial Guinea has stopped communicating. CMS Energy has concluded that the government’s tax claim is without merit and will continue to contest the claim, but cannot predict the financial impact or outcome of the matter. An unfavorable outcome could have a material adverse effect on CMS Energy’s liquidity, financial condition, and results of operations. Consumers Electric Utility Contingencies Electric Environmental Matters: Consumers’ operations are subject to environmental laws and regulations. Historically, Consumers has generally been able to recover, in customer rates, the costs to operate its facilities in compliance with these laws and regulations. Cleanup and Solid Waste: Consumers expects to incur remediation and other response activity costs at a number of sites under the NREPA. Consumers believes that these costs should be recoverable in rates, but cannot guarantee that outcome. Consumers estimates that its liability for NREPA sites for which it can estimate a range of loss will be between $3 million and $4 million. At September 30, 2019, Consumers had a recorded liability of $3 million, the minimum amount in the range of its estimated probable NREPA liability, as no amount in the range was considered a better estimate than any other amount. Consumers is a potentially responsible party at a number of contaminated sites administered under CERCLA. CERCLA liability is joint and several. In 2010, Consumers received official notification from the EPA that identified Consumers as a potentially responsible party for cleanup of PCBs at the Kalamazoo River CERCLA site. The notification claimed that the EPA has reason to believe that Consumers disposed of PCBs and arranged for the disposal and treatment of PCB‑containing materials at portions of the site. In 2011, Consumers received a follow‑up letter from the EPA requesting that Consumers agree to participate in a removal action plan along with several other companies for an area of lower Portage Creek, which is connected to the Kalamazoo River. All parties, including Consumers, that were asked to participate in the removal action plan declined to accept liability. Until further information is received from the EPA, Consumers is unable to estimate a range of potential liability for cleanup of the river. Based on its experience, Consumers estimates that its share of the total liability for known CERCLA sites will be between $3 million and $8 million. Various factors, including the number and creditworthiness of potentially responsible parties involved with each site, affect Consumers’ share of the total liability. At September 30, 2019, Consumers had a recorded liability of $3 million for its share of the total liability at these sites, the minimum amount in the range of its estimated probable CERCLA liability, as no amount in the range was considered a better estimate than any other amount. The timing of payments related to Consumers’ remediation and other response activities at its CERCLA and NREPA sites is uncertain. Consumers periodically reviews these cost estimates. A change in the underlying assumptions, such as an increase in the number of sites, different remediation techniques, the nature and extent of contamination, and legal and regulatory requirements, could affect its estimates of NREPA and CERCLA liability. Ludington PCB: In 1998, during routine maintenance activities, Consumers identified PCB as a component in certain paint, grout, and sealant materials at Ludington. Consumers removed part of the PCB material and replaced it with non‑PCB material. Consumers has had several communications with the EPA regarding this matter, but cannot predict the financial impact or outcome. MCV PPA: In December 2017, the MCV Partnership initiated arbitration against Consumers, asserting a breach of contract associated with the MCV PPA. Under this PPA, Consumers pays the MCV Partnership a fixed energy charge based on Consumers’ annual average baseload coal generating plant operating and maintenance cost, fuel inventory, and administrative and general expenses. The MCV Partnership asserts that, under the Clean Air Act, Consumers should have installed pollution control equipment on coal‑fueled electric generating units years before they were retired. The MCV Partnership also asserts that Consumers should have installed pollution control equipment earlier on its remaining coal‑fueled electric generating units. Additionally, the MCV Partnership claims that Consumers improperly characterized certain costs included in the calculation of the fixed energy charge. In January 2019, an arbitration panel issued an order concluding that the MCV Partnership is not entitled to any damages associated with its claim against Consumers related to the Clean Air Act; the majority of the MCV Partnership’s claim, which estimated damages and interest in excess of $270 million, was related to this dismissed claim. Consumers believes that the MCV Partnership’s remaining claims are without merit, but cannot predict the financial impact or outcome of the matter. Underwater Cables in Straits of Mackinac: Consumers owns certain underwater electric cables in the Straits of Mackinac, which were de‑energized and retired in 1990. Consumers was notified that some of these cables were damaged as a result of vessel activity in April 2018. Following the notification, Consumers located, inspected, sampled, capped, and returned the damaged retired cables to their original location on the lake bottom, and did not find any substantive evidence of environmental contamination. Consumers is collaborating with the State of Michigan, local Native American tribes, and other stakeholders to evaluate the status of the cables and to determine if any additional action is advisable. Consumers cannot predict the outcome of this matter, but if Consumers is required to remove all the cables, it could incur additional costs of up to $10 million. Consumers filed suit against the companies that own the vessels that allegedly caused the damage and settled that matter. Consumers will seek recovery from customers of any costs incurred. Consumers Gas Utility Contingencies Gas Environmental Matters: Consumers expects to incur remediation and other response activity costs at a number of sites under the NREPA. These sites include 23 former MGP facilities. Consumers operated the facilities on these sites for some part of their operating lives. For some of these sites, Consumers has no present ownership interest or may own only a portion of the original site. At September 30, 2019, Consumers had a recorded liability of $70 million for its remaining obligations for these sites. This amount represents the present value of long‑term projected costs, using a discount rate of 2.57 percent and an inflation rate of 2.5 percent. The undiscounted amount of the remaining obligation is $72 million. Consumers expects to pay the following amounts for remediation and other response activity costs during the remainder of 2019 and in each of the next five years:
Consumers periodically reviews these cost estimates. Any significant change in the underlying assumptions, such as an increase in the number of sites, changes in remediation techniques, or legal and regulatory requirements, could affect Consumers’ estimates of annual response activity costs and the MGP liability. Pursuant to orders issued by the MPSC, Consumers defers its MGP‑related remediation costs and recovers them from its customers over a ten‑year period. At September 30, 2019, Consumers had a regulatory asset of $132 million related to the MGP sites. Consumers estimates that its liability to perform remediation and other response activities at NREPA sites other than the MGP sites could reach $3 million. At September 30, 2019, Consumers had a recorded liability of less than $1 million, the minimum amount in the range of its estimated probable liability, as no amount in the range was considered a better estimate than any other amount. Ray Compressor Station: On January 30, 2019, Consumers experienced a fire at the Ray Compressor Station, which resulted in the Ray Storage Field being off‑line or operating at significantly reduced capacity, which negatively affected Consumers’ natural gas supply and delivery capacity. This incident, which occurred during the extreme polar vortex weather condition, required Consumers to request voluntary reductions in customer load, to implement contingency gas supply purchases, and to implement a curtailment of natural gas deliveries for industrial and large commercial customers pursuant to Consumers’ MPSC curtailment tariff. The curtailment and request for voluntary reductions of customer loads were canceled as of midnight, February 1, 2019. Consumers investigated the cause of the incident, and filed a report on the incident with the MPSC in April 2019. In response, the MPSC issued an order in July 2019, directing Consumers to file additional reports regarding the incident and to include detail of the resulting costs in a future rate proceeding. As a result of the fire and the resulting curtailment, Consumers could be subject to various claims from impacted customers or claims for damages. Consumers may also be subject to regulatory penalties and disallowances of gas purchased, gas lost, and costs associated with the repairs to the Ray Compressor Station. At this time, Consumers cannot predict the outcome of these matters or other gas-related incidents and a reasonable estimate of any loss cannot be made, but they could have a material adverse effect on Consumers’ results of operations, financial condition, or liquidity, and could subject Consumers’ gas utility to increased regulatory scrutiny. Consumers Electric and Gas Utility Contingencies Electric and Gas Staking: In June 2019, the MPSC ordered Consumers to show cause as to why it should not be found in violation of the MISS DIG Act. The MPSC alleges that Consumers violated the law by failing to respond in a timely manner to over 20,000 requests to mark the location of underground facilities in April and May 2019 and only partially responding to others. The law provides the MPSC with discretion in setting fines for violations, if any; however, the fines cannot exceed $5,000 per violation. An order by the MPSC in this proceeding is not expected until mid-2020. Consumers has resolved the backlog of staking requests. Consumers cannot predict the outcome of this matter, but it could be subject to regulatory penalties that have a material adverse effect on Consumers’ results of operations, financial condition, or liquidity, and Consumers could be subject to increased regulatory scrutiny. Guarantees Presented in the following table are CMS Energy’s and Consumers’ guarantees at September 30, 2019:
Additionally, in the normal course of business, CMS Energy, Consumers, and certain other subsidiaries of CMS Energy have entered into various agreements containing tax and other indemnity provisions for which they are unable to estimate the maximum potential obligation. The carrying value of these indemnity obligations is $1 million. CMS Energy and Consumers consider the likelihood that they would be required to perform or incur substantial losses related to these indemnities to be remote. Other Contingencies In addition to the matters disclosed in this Note and Note 2, Regulatory Matters, there are certain other lawsuits and administrative proceedings before various courts and governmental agencies, as well as unasserted claims that may result in such proceedings, arising in the ordinary course of business to which CMS Energy, Consumers, and certain other subsidiaries of CMS Energy are parties. These other lawsuits, proceedings, and unasserted claims may involve personal injury, property damage, contracts, environmental matters, federal and state taxes, rates, licensing, employment, and other matters. Further, CMS Energy and Consumers occasionally self‑report certain regulatory non‑compliance matters that may or may not eventually result in administrative proceedings. CMS Energy and Consumers believe that the outcome of any one of these proceedings and potential claims will not have a material negative effect on their consolidated results of operations, financial condition, or liquidity.
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| Financings and Capitalization | Financings and Capitalization Financings: Presented in the following table is a summary of major long‑term debt transactions during the nine months ended September 30, 2019:
Tax-exempt Variable Rate Limited Obligation Revenue Bonds: In October 2019, Consumers entered into a $75 million loan agreement with the MSF that matures in October 2049. Concurrently, the MSF issued $75 million in tax-exempt variable rate limited obligation revenue bonds and loaned Consumers the proceeds. The proceeds from the bonds, which are collateralized by Consumers’ first mortgage bonds, will reimburse or pay for the cost of construction, improvement, and installation of solid waste disposal facilities at certain generating units. Revolving Credit Facilities: The following revolving credit facilities with banks were available at September 30, 2019:
Short‑term Borrowings: Under Consumers’ commercial paper program, Consumers may issue, in one or more placements, commercial paper notes with maturities of up to 365 days and that bear interest at fixed or floating rates. These issuances are supported by Consumers’ revolving credit facilities and may have an aggregate principal amount outstanding of up to $500 million. While the amount of outstanding commercial paper does not reduce the available capacity of the revolving credit facilities, Consumers does not intend to issue commercial paper in an amount exceeding the available capacity of the facilities. At September 30, 2019, there were no commercial paper notes outstanding under this program. Dividend Restrictions: At September 30, 2019, payment of dividends by CMS Energy on its common stock was limited to $5.0 billion under provisions of the Michigan Business Corporation Act of 1972. Under the provisions of its articles of incorporation, at September 30, 2019, Consumers had $1.4 billion of unrestricted retained earnings available to pay dividends on its common stock to CMS Energy. Provisions of the Federal Power Act and the Natural Gas Act appear to restrict dividends payable by Consumers to the amount of Consumers’ retained earnings. Several decisions from FERC suggest that, under a variety of circumstances, dividends from Consumers on its common stock would not be limited to amounts in Consumers’ retained earnings. Any decision by Consumers to pay dividends on its common stock in excess of retained earnings would be based on specific facts and circumstances and would be subject to a formal regulatory filing process. For the nine months ended September 30, 2019, Consumers paid $396 million in dividends on its common stock to CMS Energy. Issuance of Common Stock: In 2018, CMS Energy entered into an equity offering program under which it may sell, from time to time, shares of CMS Energy common stock having an aggregate sales price of up to $250 million. Under this program, CMS Energy may sell its common stock in privately negotiated transactions, in “at the market” offerings, through forward sales transactions or otherwise. CMS Energy has entered into forward sales contracts having an aggregate sales price of $250 million. Presented in the following table are details of these contracts:
These contracts allow CMS Energy to either physically settle the contracts by issuing shares of its common stock at the then‑applicable forward sale price specified by the agreement or net settle the contracts through the delivery or receipt of cash or shares. CMS Energy may settle the contracts at any time through their maturity dates, and presently intends to physically settle the contracts by delivering shares of its common stock. The initial forward price in the forward equity sale contracts includes a deduction for commissions and will be adjusted on a daily basis over the term based on an interest rate factor and decreased on certain dates by certain predetermined amounts to reflect expected dividend payments. No amounts have or will be recorded on CMS Energy’s consolidated balance sheets until settlements of the forward equity sale contracts occur. If CMS Energy had elected to net share settle the contracts as of September 30, 2019, CMS Energy would have been required to deliver 1,039,414 shares.
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| Consumers Energy Company | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instrument [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Financings and Capitalization | Financings and Capitalization Financings: Presented in the following table is a summary of major long‑term debt transactions during the nine months ended September 30, 2019:
Tax-exempt Variable Rate Limited Obligation Revenue Bonds: In October 2019, Consumers entered into a $75 million loan agreement with the MSF that matures in October 2049. Concurrently, the MSF issued $75 million in tax-exempt variable rate limited obligation revenue bonds and loaned Consumers the proceeds. The proceeds from the bonds, which are collateralized by Consumers’ first mortgage bonds, will reimburse or pay for the cost of construction, improvement, and installation of solid waste disposal facilities at certain generating units. Revolving Credit Facilities: The following revolving credit facilities with banks were available at September 30, 2019:
Short‑term Borrowings: Under Consumers’ commercial paper program, Consumers may issue, in one or more placements, commercial paper notes with maturities of up to 365 days and that bear interest at fixed or floating rates. These issuances are supported by Consumers’ revolving credit facilities and may have an aggregate principal amount outstanding of up to $500 million. While the amount of outstanding commercial paper does not reduce the available capacity of the revolving credit facilities, Consumers does not intend to issue commercial paper in an amount exceeding the available capacity of the facilities. At September 30, 2019, there were no commercial paper notes outstanding under this program. Dividend Restrictions: At September 30, 2019, payment of dividends by CMS Energy on its common stock was limited to $5.0 billion under provisions of the Michigan Business Corporation Act of 1972. Under the provisions of its articles of incorporation, at September 30, 2019, Consumers had $1.4 billion of unrestricted retained earnings available to pay dividends on its common stock to CMS Energy. Provisions of the Federal Power Act and the Natural Gas Act appear to restrict dividends payable by Consumers to the amount of Consumers’ retained earnings. Several decisions from FERC suggest that, under a variety of circumstances, dividends from Consumers on its common stock would not be limited to amounts in Consumers’ retained earnings. Any decision by Consumers to pay dividends on its common stock in excess of retained earnings would be based on specific facts and circumstances and would be subject to a formal regulatory filing process. For the nine months ended September 30, 2019, Consumers paid $396 million in dividends on its common stock to CMS Energy. Issuance of Common Stock: In 2018, CMS Energy entered into an equity offering program under which it may sell, from time to time, shares of CMS Energy common stock having an aggregate sales price of up to $250 million. Under this program, CMS Energy may sell its common stock in privately negotiated transactions, in “at the market” offerings, through forward sales transactions or otherwise. CMS Energy has entered into forward sales contracts having an aggregate sales price of $250 million. Presented in the following table are details of these contracts:
These contracts allow CMS Energy to either physically settle the contracts by issuing shares of its common stock at the then‑applicable forward sale price specified by the agreement or net settle the contracts through the delivery or receipt of cash or shares. CMS Energy may settle the contracts at any time through their maturity dates, and presently intends to physically settle the contracts by delivering shares of its common stock. The initial forward price in the forward equity sale contracts includes a deduction for commissions and will be adjusted on a daily basis over the term based on an interest rate factor and decreased on certain dates by certain predetermined amounts to reflect expected dividend payments. No amounts have or will be recorded on CMS Energy’s consolidated balance sheets until settlements of the forward equity sale contracts occur. If CMS Energy had elected to net share settle the contracts as of September 30, 2019, CMS Energy would have been required to deliver 1,039,414 shares.
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Fair Value Measurements |
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Measurements | Fair Value Measurements Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. When measuring fair value, CMS Energy and Consumers are required to incorporate all assumptions that market participants would use in pricing an asset or liability, including assumptions about risk. A fair value hierarchy prioritizes inputs used to measure fair value according to their observability in the market. The three levels of the fair value hierarchy are as follows:
CMS Energy and Consumers classify fair value measurements within the fair value hierarchy based on the lowest level of input that is significant to the fair value measurement in its entirety. Assets and Liabilities Measured at Fair Value on a Recurring Basis Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:
Cash Equivalents: Cash equivalents and restricted cash equivalents consist of money market funds with daily liquidity. Nonqualified Deferred Compensation Plan Assets and Liabilities: The nonqualified deferred compensation plan assets consist of mutual funds, which are valued using the daily quoted net asset values. CMS Energy and Consumers value their nonqualified deferred compensation plan liabilities based on the fair values of the plan assets, as they reflect the amount owed to the plan participants in accordance with their investment elections. CMS Energy and Consumers report the assets in other non‑current assets and the liabilities in other non‑current liabilities on their consolidated balance sheets. DB SERP Cash Equivalents: The DB SERP cash equivalents consist of a money market fund with daily liquidity and are reported in other non‑current assets on CMS Energy and Consumers’ consolidated balance sheets. Derivative Instruments: CMS Energy and Consumers value their derivative instruments using either a market approach that incorporates information from market transactions, or an income approach that discounts future expected cash flows to a present value amount. CMS Energy’s and Consumers’ derivatives are classified as Level 2 or Level 3. The derivatives classified as Level 2 are interest rate swaps at CMS Energy, which are valued using market‑based inputs. CMS Energy uses interest rate swaps to manage its interest rate risk on certain long‑term debt obligations and certain notes receivable at EnerBank. Certain interest rate swaps are accounted for as cash flow hedges of the future variability of interest payments on debt with a notional amount of $94 million at September 30, 2019. Gains or losses on these swaps are initially reported in other comprehensive income and then, as interest payments are made on the hedged debt, are recognized in earnings within other interest expense on CMS Energy’s consolidated statements of income. CMS Energy recorded no gains or losses in other comprehensive income for the three months ended September 30, 2019 and a $4 million loss for the nine months ended September 30, 2019. There were no material impacts on other interest expense associated with these swaps for the three and nine months ended September 30, 2019. The fair value of these swaps recorded in other liabilities on CMS Energy’s consolidated balance sheets totaled $6 million at September 30, 2019 and $2 million at December 31, 2018. CMS Energy also has other interest rate swaps that economically hedge interest rate risk on debt, but that do not qualify for cash flow hedge accounting; the amounts associated with these swaps were not material for the three and nine months ended September 30, 2019. The interest rate swaps at EnerBank qualify as fair value hedges of long‑term, fixed‑rate notes receivable with a notional amount of $61 million at September 30, 2019. The fair value of these interest rate swaps recorded in other liabilities was $2 million at September 30, 2019. CMS Energy is adjusting the carrying value of the hedged notes receivable for the change in their fair value due to the hedged risk. Both gains and losses on the swaps and the changes to the carrying value of the hedged notes receivable are recorded within operating revenue on CMS Energy’s consolidated statements of income. There were no material amounts recognized in operating revenue associated with these swaps for the three and nine months ended September 30, 2019. The majority of derivatives classified as Level 3 are FTRs held by Consumers. Consumers uses FTRs to manage price risk related to electricity transmission congestion. An FTR is a financial instrument that entitles its holder to receive compensation or requires its holder to remit payment for congestion‑related transmission charges. Due to the lack of quoted pricing information, Consumers determines the fair value of its FTRs based on Consumers’ average historical settlements. There was no material activity within the Level 3 categories of assets and liabilities during the periods presented.
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Measurements | Fair Value Measurements Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. When measuring fair value, CMS Energy and Consumers are required to incorporate all assumptions that market participants would use in pricing an asset or liability, including assumptions about risk. A fair value hierarchy prioritizes inputs used to measure fair value according to their observability in the market. The three levels of the fair value hierarchy are as follows:
CMS Energy and Consumers classify fair value measurements within the fair value hierarchy based on the lowest level of input that is significant to the fair value measurement in its entirety. Assets and Liabilities Measured at Fair Value on a Recurring Basis Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:
Cash Equivalents: Cash equivalents and restricted cash equivalents consist of money market funds with daily liquidity. Nonqualified Deferred Compensation Plan Assets and Liabilities: The nonqualified deferred compensation plan assets consist of mutual funds, which are valued using the daily quoted net asset values. CMS Energy and Consumers value their nonqualified deferred compensation plan liabilities based on the fair values of the plan assets, as they reflect the amount owed to the plan participants in accordance with their investment elections. CMS Energy and Consumers report the assets in other non‑current assets and the liabilities in other non‑current liabilities on their consolidated balance sheets. DB SERP Cash Equivalents: The DB SERP cash equivalents consist of a money market fund with daily liquidity and are reported in other non‑current assets on CMS Energy and Consumers’ consolidated balance sheets. Derivative Instruments: CMS Energy and Consumers value their derivative instruments using either a market approach that incorporates information from market transactions, or an income approach that discounts future expected cash flows to a present value amount. CMS Energy’s and Consumers’ derivatives are classified as Level 2 or Level 3. The derivatives classified as Level 2 are interest rate swaps at CMS Energy, which are valued using market‑based inputs. CMS Energy uses interest rate swaps to manage its interest rate risk on certain long‑term debt obligations and certain notes receivable at EnerBank. Certain interest rate swaps are accounted for as cash flow hedges of the future variability of interest payments on debt with a notional amount of $94 million at September 30, 2019. Gains or losses on these swaps are initially reported in other comprehensive income and then, as interest payments are made on the hedged debt, are recognized in earnings within other interest expense on CMS Energy’s consolidated statements of income. CMS Energy recorded no gains or losses in other comprehensive income for the three months ended September 30, 2019 and a $4 million loss for the nine months ended September 30, 2019. There were no material impacts on other interest expense associated with these swaps for the three and nine months ended September 30, 2019. The fair value of these swaps recorded in other liabilities on CMS Energy’s consolidated balance sheets totaled $6 million at September 30, 2019 and $2 million at December 31, 2018. CMS Energy also has other interest rate swaps that economically hedge interest rate risk on debt, but that do not qualify for cash flow hedge accounting; the amounts associated with these swaps were not material for the three and nine months ended September 30, 2019. The interest rate swaps at EnerBank qualify as fair value hedges of long‑term, fixed‑rate notes receivable with a notional amount of $61 million at September 30, 2019. The fair value of these interest rate swaps recorded in other liabilities was $2 million at September 30, 2019. CMS Energy is adjusting the carrying value of the hedged notes receivable for the change in their fair value due to the hedged risk. Both gains and losses on the swaps and the changes to the carrying value of the hedged notes receivable are recorded within operating revenue on CMS Energy’s consolidated statements of income. There were no material amounts recognized in operating revenue associated with these swaps for the three and nine months ended September 30, 2019. The majority of derivatives classified as Level 3 are FTRs held by Consumers. Consumers uses FTRs to manage price risk related to electricity transmission congestion. An FTR is a financial instrument that entitles its holder to receive compensation or requires its holder to remit payment for congestion‑related transmission charges. Due to the lack of quoted pricing information, Consumers determines the fair value of its FTRs based on Consumers’ average historical settlements. There was no material activity within the Level 3 categories of assets and liabilities during the periods presented.
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Financial Instruments |
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| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Financial Instruments | Financial Instruments Presented in the following table are the carrying amounts and fair values, by level within the fair value hierarchy, of CMS Energy’s and Consumers’ financial instruments that are not recorded at fair value. The table excludes cash, cash equivalents, short‑term financial instruments, and trade accounts receivable and payable whose carrying amounts approximate their fair values. For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 5, Fair Value Measurements.
The effects of third‑party credit enhancements were excluded from the fair value measurements of long‑term debt. The principal amount of CMS Energy’s long‑term debt supported by third‑party credit enhancements was $35 million at September 30, 2019 and December 31, 2018. The entirety of these amounts was at Consumers. Debt securities classified as held to maturity consisted primarily of mortgage‑backed securities and Utah Housing Corporation bonds held by EnerBank. Presented in the following table are these investment securities:
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Financial Instruments | Financial Instruments Presented in the following table are the carrying amounts and fair values, by level within the fair value hierarchy, of CMS Energy’s and Consumers’ financial instruments that are not recorded at fair value. The table excludes cash, cash equivalents, short‑term financial instruments, and trade accounts receivable and payable whose carrying amounts approximate their fair values. For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 5, Fair Value Measurements.
The effects of third‑party credit enhancements were excluded from the fair value measurements of long‑term debt. The principal amount of CMS Energy’s long‑term debt supported by third‑party credit enhancements was $35 million at September 30, 2019 and December 31, 2018. The entirety of these amounts was at Consumers. Debt securities classified as held to maturity consisted primarily of mortgage‑backed securities and Utah Housing Corporation bonds held by EnerBank. Presented in the following table are these investment securities:
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Notes Receivable |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Receivable | Notes Receivable Presented in the following table are details of CMS Energy’s and Consumers’ current and non‑current notes receivable:
EnerBank Notes Receivable EnerBank notes receivable are primarily unsecured consumer installment loans for financing home improvements. EnerBank records its notes receivable at cost, less an allowance for loan losses. During the nine months ended September 30, 2019, EnerBank purchased a portfolio of secured and unsecured consumer installment loans with a principal value of $333 million. Authorized contractors pay fees to EnerBank to provide borrowers with same‑as‑cash, zero interest, or reduced interest loans. Unearned income associated with the loan fees, which is recorded as a reduction to notes receivable on CMS Energy’s consolidated balance sheets, was $133 million at September 30, 2019 and $102 million at December 31, 2018. The allowance for loan losses is a valuation allowance to reflect estimated credit losses. The allowance is increased by the provision for loan losses and decreased by loan charge‑offs net of recoveries. Management estimates the allowance balance required by taking into consideration historical loan loss experience, the nature and volume of the portfolio, economic conditions, and other factors. Loan losses are charged against the allowance when the loss is confirmed, but no later than the point at which a loan becomes 120 days past due. Loans that are 30 days or more past due are considered delinquent. The balance of EnerBank’s delinquent consumer loans was $27 million at September 30, 2019 and $21 million at December 31, 2018. At September 30, 2019 and December 31, 2018, EnerBank’s loans that had been modified as troubled debt restructurings were immaterial. EnerBank has entered into interest rate swaps on $61 million of its loans (notes receivable). For information about interest rate swaps see Note 5, Fair Value Measurements. DB SERP Note Receivable – Related Party The DB SERP note receivable – related party is Consumers’ portion of a demand note payable issued by CMS Energy to the DB SERP rabbi trust. The demand note bears interest at an annual rate of 4.10 percent and has a maturity date of 2028.
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Receivable | Notes Receivable Presented in the following table are details of CMS Energy’s and Consumers’ current and non‑current notes receivable:
EnerBank Notes Receivable EnerBank notes receivable are primarily unsecured consumer installment loans for financing home improvements. EnerBank records its notes receivable at cost, less an allowance for loan losses. During the nine months ended September 30, 2019, EnerBank purchased a portfolio of secured and unsecured consumer installment loans with a principal value of $333 million. Authorized contractors pay fees to EnerBank to provide borrowers with same‑as‑cash, zero interest, or reduced interest loans. Unearned income associated with the loan fees, which is recorded as a reduction to notes receivable on CMS Energy’s consolidated balance sheets, was $133 million at September 30, 2019 and $102 million at December 31, 2018. The allowance for loan losses is a valuation allowance to reflect estimated credit losses. The allowance is increased by the provision for loan losses and decreased by loan charge‑offs net of recoveries. Management estimates the allowance balance required by taking into consideration historical loan loss experience, the nature and volume of the portfolio, economic conditions, and other factors. Loan losses are charged against the allowance when the loss is confirmed, but no later than the point at which a loan becomes 120 days past due. Loans that are 30 days or more past due are considered delinquent. The balance of EnerBank’s delinquent consumer loans was $27 million at September 30, 2019 and $21 million at December 31, 2018. At September 30, 2019 and December 31, 2018, EnerBank’s loans that had been modified as troubled debt restructurings were immaterial. EnerBank has entered into interest rate swaps on $61 million of its loans (notes receivable). For information about interest rate swaps see Note 5, Fair Value Measurements. DB SERP Note Receivable – Related Party The DB SERP note receivable – related party is Consumers’ portion of a demand note payable issued by CMS Energy to the DB SERP rabbi trust. The demand note bears interest at an annual rate of 4.10 percent and has a maturity date of 2028.
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| Leases [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases | Leases Lessee CMS Energy and Consumers lease various assets from third parties, including coal-carrying railcars, real estate, service vehicles, and gas pipeline capacity. In addition, CMS Energy and Consumers account for several of their PPAs as leases. CMS Energy and Consumers do not record right-of-use assets or lease liabilities on their consolidated balance sheets for rentals with lease terms of 12 months or less, most of which are for the lease of real estate and service vehicles. Lease expense for these rentals is recognized on a straight-line basis over the lease term. CMS Energy and Consumers include future payments for all renewal options, fair market value extensions, and buyout provisions reasonably certain of exercise in their measurement of lease right-of-use assets and lease liabilities. In addition, certain leases for service vehicles contain end-of-lease adjustment clauses based on proceeds received from the sale or disposition of the vehicles. CMS Energy and Consumers also include executory costs in the measurement of their right-of-use assets and lease liabilities, except for maintenance costs related to their coal-carrying railcar leases. Most of Consumers’ PPAs contain provisions at the end of the initial contract terms to renew the agreements annually under mutually agreed‑upon terms at the time of renewal. Energy and capacity payments that vary depending on quantities delivered are recognized as variable lease costs when incurred. Consumers accounts for a PPA with one of CMS Energy’s equity method subsidiaries as a finance lease. Presented in the following table is information about CMS Energy’s and Consumers’ lease right-of-use assets and lease liabilities:
CMS Energy and Consumers report operating, variable, and short-term lease costs as operating expenses on their consolidated statements of income, except for certain amounts that may be capitalized to other assets. Presented in the following table is a summary of CMS Energy’s and Consumers’ total lease costs:
Presented in the following table is cash flow information related to amounts paid on CMS Energy’s and Consumers’ lease liabilities:
Presented in the following table are the minimum rental commitments under CMS Energy’s and Consumers’ non‑cancelable leases:
Presented in the following table are the minimum rental commitments under CMS Energy’s and Consumers’ non‑cancelable leases at December 31, 2018, prior to the adoption of ASU 2016‑02:
Lessor CMS Energy and Consumers are the lessor under power sales and natural gas delivery agreements that are accounted for as leases. CMS Energy has power sales agreements that are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. For the three months ended September 30, 2019, CMS Energy’s lease revenue from its power sales agreements was $42 million, which included variable lease payments of $28 million. For the nine months ended September 30, 2019, CMS Energy’s lease revenue from its power sales agreements was $132 million, which included variable lease payments of $91 million. Consumers has an agreement to build, own, operate, and maintain a compressed natural gas fueling station through December 2038. This agreement is accounted for as a direct finance lease, under which the lessee has the option to purchase the natural gas fueling station at the end of the lease term. Fixed monthly payments escalate annually with inflation. Consumers and a subsidiary of CMS Energy executed a 20‑year natural gas transportation agreement, related to a pipeline owned by Consumers. This agreement is accounted for as a direct finance lease and will automatically extend annually unless terminated by either party. The effects of the lease are eliminated on CMS Energy’s consolidated financial statements. Presented in the following table are the minimum rental payments to be received under CMS Energy’s non‑cancelable operating leases:
Presented in the following table are the minimum rental payments to be received under CMS Energy’s and Consumers’ non‑cancelable direct financing leases:
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases | Leases Lessee CMS Energy and Consumers lease various assets from third parties, including coal-carrying railcars, real estate, service vehicles, and gas pipeline capacity. In addition, CMS Energy and Consumers account for several of their PPAs as leases. CMS Energy and Consumers do not record right-of-use assets or lease liabilities on their consolidated balance sheets for rentals with lease terms of 12 months or less, most of which are for the lease of real estate and service vehicles. Lease expense for these rentals is recognized on a straight-line basis over the lease term. CMS Energy and Consumers include future payments for all renewal options, fair market value extensions, and buyout provisions reasonably certain of exercise in their measurement of lease right-of-use assets and lease liabilities. In addition, certain leases for service vehicles contain end-of-lease adjustment clauses based on proceeds received from the sale or disposition of the vehicles. CMS Energy and Consumers also include executory costs in the measurement of their right-of-use assets and lease liabilities, except for maintenance costs related to their coal-carrying railcar leases. Most of Consumers’ PPAs contain provisions at the end of the initial contract terms to renew the agreements annually under mutually agreed‑upon terms at the time of renewal. Energy and capacity payments that vary depending on quantities delivered are recognized as variable lease costs when incurred. Consumers accounts for a PPA with one of CMS Energy’s equity method subsidiaries as a finance lease. Presented in the following table is information about CMS Energy’s and Consumers’ lease right-of-use assets and lease liabilities:
CMS Energy and Consumers report operating, variable, and short-term lease costs as operating expenses on their consolidated statements of income, except for certain amounts that may be capitalized to other assets. Presented in the following table is a summary of CMS Energy’s and Consumers’ total lease costs:
Presented in the following table is cash flow information related to amounts paid on CMS Energy’s and Consumers’ lease liabilities:
Presented in the following table are the minimum rental commitments under CMS Energy’s and Consumers’ non‑cancelable leases:
Presented in the following table are the minimum rental commitments under CMS Energy’s and Consumers’ non‑cancelable leases at December 31, 2018, prior to the adoption of ASU 2016‑02:
Lessor CMS Energy and Consumers are the lessor under power sales and natural gas delivery agreements that are accounted for as leases. CMS Energy has power sales agreements that are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. For the three months ended September 30, 2019, CMS Energy’s lease revenue from its power sales agreements was $42 million, which included variable lease payments of $28 million. For the nine months ended September 30, 2019, CMS Energy’s lease revenue from its power sales agreements was $132 million, which included variable lease payments of $91 million. Consumers has an agreement to build, own, operate, and maintain a compressed natural gas fueling station through December 2038. This agreement is accounted for as a direct finance lease, under which the lessee has the option to purchase the natural gas fueling station at the end of the lease term. Fixed monthly payments escalate annually with inflation. Consumers and a subsidiary of CMS Energy executed a 20‑year natural gas transportation agreement, related to a pipeline owned by Consumers. This agreement is accounted for as a direct finance lease and will automatically extend annually unless terminated by either party. The effects of the lease are eliminated on CMS Energy’s consolidated financial statements. Presented in the following table are the minimum rental payments to be received under CMS Energy’s non‑cancelable operating leases:
Presented in the following table are the minimum rental payments to be received under CMS Energy’s and Consumers’ non‑cancelable direct financing leases:
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Retirement Benefits |
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| Defined Benefit Plan Disclosure [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Retirement Benefits | Retirement Benefits CMS Energy and Consumers provide pension, OPEB, and other retirement benefits to employees under a number of different plans. Presented in the following table are the costs (credits) and other changes in plan assets and benefit obligations incurred in CMS Energy’s and Consumers’ retirement benefits plans:
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Defined Benefit Plan Disclosure [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Retirement Benefits | Retirement Benefits CMS Energy and Consumers provide pension, OPEB, and other retirement benefits to employees under a number of different plans. Presented in the following table are the costs (credits) and other changes in plan assets and benefit obligations incurred in CMS Energy’s and Consumers’ retirement benefits plans:
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Income Taxes |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Taxes [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Taxes | Income Taxes Presented in the following table is a reconciliation of the statutory U.S. federal income tax rate to the effective income tax rate from continuing operations:
3 In March 2018, Consumers finalized a study of research and development tax credits for the tax years 2012 through 2016. As a result, Consumers recognized an $8 million increase in the credit, net of reserves for uncertain tax positions, at that time.
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| Consumers Energy Company | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Taxes [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Taxes | Income Taxes Presented in the following table is a reconciliation of the statutory U.S. federal income tax rate to the effective income tax rate from continuing operations:
3 In March 2018, Consumers finalized a study of research and development tax credits for the tax years 2012 through 2016. As a result, Consumers recognized an $8 million increase in the credit, net of reserves for uncertain tax positions, at that time.
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Earnings Per Share - CMS Energy |
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Sep. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share - CMS Energy | Earnings Per Share—CMS Energy Presented in the following table are CMS Energy’s basic and diluted EPS computations based on net income:
Nonvested Stock Awards CMS Energy’s nonvested stock awards are composed of participating and non‑participating securities. The participating securities accrue cash dividends when common stockholders receive dividends. Since the recipient is not required to return the dividends to CMS Energy if the recipient forfeits the award, the nonvested stock awards are considered participating securities. As such, the participating nonvested stock awards were included in the computation of basic EPS. The non‑participating securities accrue stock dividends that vest concurrently with the stock award. If the recipient forfeits the award, the stock dividends accrued on the non‑participating securities are also forfeited. Accordingly, the non‑participating awards and stock dividends were included in the computation of diluted EPS, but not in the computation of basic EPS. Forward Equity Sale Contracts In November 2018 and February 2019, CMS Energy entered into forward equity sale contracts. These forward equity sale contracts are non‑participating securities. While the forward sale price in the forward equity sale contract is decreased on certain dates by certain predetermined amounts to reflect expected dividend payments, these price adjustments were set upon inception of the agreement and the forward contract does not give the owner the right to participate in undistributed earnings. Accordingly, the forward equity sale contracts were included in the computation of diluted EPS, but not in the computation of basic EPS. For further details on the forward equity sale contracts, see Note 4, Financings and Capitalization.
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Revenue |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Revenue, Initial Application Period Cumulative Effect Transition [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Revenue | Revenue Presented in the following tables are the components of operating revenue:
Electric and Gas Utilities Consumers Utility Revenue: Consumers recognizes revenue primarily from the sale of electric and gas utility services at tariff‑based rates regulated by the MPSC. Consumers’ customer base consists of a mix of residential, commercial, and diversified industrial customers. Consumers’ tariff‑based sales performance obligations are described below.
MPSC through the rate‑making process and represent the stand‑alone selling price of a bundled product comprising the commodity, electricity or natural gas, and the service of delivering such commodity. In some instances, Consumers has specific fixed‑term contracts with large commercial and industrial customers to provide electricity or gas at certain tariff rates or to provide gas transportation services at contracted rates. The amount of electricity and gas to be delivered under these contracts and the associated future revenue to be received are generally dependent on the customers’ needs. Accordingly, Consumers recognizes revenues at the tariff or contracted rate as electricity or gas is delivered to the customer. Consumers also has other miscellaneous contracts with customers related to pole and other property rentals, appliance service plans, and utility contract work. Generally, these contracts are short term or evergreen in nature. Accounts Receivable and Unbilled Revenues: Accounts receivable comprise trade receivables and unbilled receivables. CMS Energy and Consumers record their accounts receivable at cost, which approximates fair value. CMS Energy and Consumers establish an allowance for uncollectible accounts based on historical losses, management’s assessment of existing economic conditions, customer payment trends, and other factors. CMS Energy and Consumers assess late payment fees on trade receivables based on contractual past‑due terms established with customers. CMS Energy and Consumers charge off accounts deemed uncollectible to operating expense. Uncollectible expense for CMS Energy and Consumers was $9 million for the three months ended September 30, 2019 and $8 million for the three months ended September 30, 2018. Uncollectible expense for CMS Energy and Consumers was $21 million for the nine months ended September 30, 2019 and $22 million for the nine months ended September 30, 2018. Consumers’ customers are billed monthly in cycles having billing dates that do not generally coincide with the end of a calendar month. This results in customers having received electricity or natural gas that they have not been billed for as of the month‑end. Consumers estimates its unbilled revenues by applying an average billed rate to total unbilled deliveries for each customer class. Unbilled revenues, which are recorded as accounts receivable on CMS Energy’s and Consumers’ consolidated balance sheets, were $249 million at September 30, 2019 and $409 million at December 31, 2018. Alternative‑Revenue Programs: Under a gas revenue decoupling mechanism authorized by the MPSC, Consumers is allowed to adjust future gas rates for differences between Consumers’ actual weather‑normalized, non‑fuel revenues and the revenues approved by the MPSC. Consumers accounts for this program as an alternative‑revenue program that meets the criteria for recognizing the effects of decoupling adjustments on revenue as gas is delivered. Consumers does not reclassify revenue from its alternative-revenue program to revenue from contracts with customers at the time the amounts are collected from customers.
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Revenue, Initial Application Period Cumulative Effect Transition [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Revenue | Revenue Presented in the following tables are the components of operating revenue:
Electric and Gas Utilities Consumers Utility Revenue: Consumers recognizes revenue primarily from the sale of electric and gas utility services at tariff‑based rates regulated by the MPSC. Consumers’ customer base consists of a mix of residential, commercial, and diversified industrial customers. Consumers’ tariff‑based sales performance obligations are described below.
MPSC through the rate‑making process and represent the stand‑alone selling price of a bundled product comprising the commodity, electricity or natural gas, and the service of delivering such commodity. In some instances, Consumers has specific fixed‑term contracts with large commercial and industrial customers to provide electricity or gas at certain tariff rates or to provide gas transportation services at contracted rates. The amount of electricity and gas to be delivered under these contracts and the associated future revenue to be received are generally dependent on the customers’ needs. Accordingly, Consumers recognizes revenues at the tariff or contracted rate as electricity or gas is delivered to the customer. Consumers also has other miscellaneous contracts with customers related to pole and other property rentals, appliance service plans, and utility contract work. Generally, these contracts are short term or evergreen in nature. Accounts Receivable and Unbilled Revenues: Accounts receivable comprise trade receivables and unbilled receivables. CMS Energy and Consumers record their accounts receivable at cost, which approximates fair value. CMS Energy and Consumers establish an allowance for uncollectible accounts based on historical losses, management’s assessment of existing economic conditions, customer payment trends, and other factors. CMS Energy and Consumers assess late payment fees on trade receivables based on contractual past‑due terms established with customers. CMS Energy and Consumers charge off accounts deemed uncollectible to operating expense. Uncollectible expense for CMS Energy and Consumers was $9 million for the three months ended September 30, 2019 and $8 million for the three months ended September 30, 2018. Uncollectible expense for CMS Energy and Consumers was $21 million for the nine months ended September 30, 2019 and $22 million for the nine months ended September 30, 2018. Consumers’ customers are billed monthly in cycles having billing dates that do not generally coincide with the end of a calendar month. This results in customers having received electricity or natural gas that they have not been billed for as of the month‑end. Consumers estimates its unbilled revenues by applying an average billed rate to total unbilled deliveries for each customer class. Unbilled revenues, which are recorded as accounts receivable on CMS Energy’s and Consumers’ consolidated balance sheets, were $249 million at September 30, 2019 and $409 million at December 31, 2018. Alternative‑Revenue Programs: Under a gas revenue decoupling mechanism authorized by the MPSC, Consumers is allowed to adjust future gas rates for differences between Consumers’ actual weather‑normalized, non‑fuel revenues and the revenues approved by the MPSC. Consumers accounts for this program as an alternative‑revenue program that meets the criteria for recognizing the effects of decoupling adjustments on revenue as gas is delivered. Consumers does not reclassify revenue from its alternative-revenue program to revenue from contracts with customers at the time the amounts are collected from customers.
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Cash And Cash Equivalents |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Cash and Cash Equivalents [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash And Cash Equivalents | Cash and Cash Equivalents Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:
Cash and Cash Equivalents: Cash and cash equivalents include short‑term, highly liquid investments with original maturities of three months or less. Restricted Cash and Cash Equivalents: Restricted cash and cash equivalents are held primarily for the repayment of securitization bonds and funds held in escrow. Cash and cash equivalents may also be restricted to pay other contractual obligations such as leasing of coal railcars. These amounts are classified as current assets since they relate to payments that could or will occur within one year. Other Non‑current Assets: The cash equivalents classified as other non‑current assets represent an investment in a money market fund held in the DB SERP rabbi trust. See Note 5, Fair Value Measurements for more information regarding the DB SERP.
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| Consumers Energy Company | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash and Cash Equivalents [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash And Cash Equivalents | Cash and Cash Equivalents Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:
Cash and Cash Equivalents: Cash and cash equivalents include short‑term, highly liquid investments with original maturities of three months or less. Restricted Cash and Cash Equivalents: Restricted cash and cash equivalents are held primarily for the repayment of securitization bonds and funds held in escrow. Cash and cash equivalents may also be restricted to pay other contractual obligations such as leasing of coal railcars. These amounts are classified as current assets since they relate to payments that could or will occur within one year. Other Non‑current Assets: The cash equivalents classified as other non‑current assets represent an investment in a money market fund held in the DB SERP rabbi trust. See Note 5, Fair Value Measurements for more information regarding the DB SERP.
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Reportable Segments |
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| Segment Reporting Information [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reportable Segments | Reportable 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. CMS Energy The reportable segments for CMS Energy are:
CMS Energy presents EnerBank, corporate interest and other expenses, and Consumers’ other consolidated entities within other reconciling items. Consumers The reportable segments for Consumers are:
Consumers’ other consolidated entities are presented within other reconciling items. Presented in the following tables is financial information by reportable segment:
2 Costs related to coal-fueled electric generating units to be retired in 2023 were removed and recorded as a regulatory asset in June 2019. For additional details, see Note 2, Regulatory Matters.
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Reporting Information [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reportable Segments | Reportable 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. CMS Energy The reportable segments for CMS Energy are:
CMS Energy presents EnerBank, corporate interest and other expenses, and Consumers’ other consolidated entities within other reconciling items. Consumers The reportable segments for Consumers are:
Consumers’ other consolidated entities are presented within other reconciling items. Presented in the following tables is financial information by reportable segment:
2 Costs related to coal-fueled electric generating units to be retired in 2023 were removed and recorded as a regulatory asset in June 2019. For additional details, see Note 2, Regulatory Matters.
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Asset Sales and Exit Activities |
9 Months Ended |
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Sep. 30, 2019 | |
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |
| Asset Sales and Exit Activities | Asset Sales and Exit Activities Enterprises In April 2019, DIG completed a sale of transmission equipment to ITC and recognized a pre-tax gain of $16 million within maintenance and other operating expenses on CMS Energy’s consolidated statements of income. Consumers Asset Sale: In September 2019, Consumers completed a sale of a portion of its electric utility’s substation transmission equipment to METC and recognized a pre-tax gain of $34 million within maintenance and other operating expenses on Consumers’ consolidated statements of income. Exit Activities: Under its Clean Energy Plan, Consumers plans to retire the D.E. Karn 1 & 2 coal-fueled electric generating units in 2023. For additional details on Consumers’ plans to request recovery of the remaining book value of the two units upon their retirement, see Note 2, Regulatory Matters. In October 2019, Consumers announced a retention incentive program to ensure necessary staffing at the D.E. Karn generating complex through the anticipated retirement of the coal-fueled electric generating units. Based on the number of employees that have chosen to participate, the aggregate cost of the program through 2023 is estimated to be $35 million. Consumers expects to recognize $6 million of expense related to retention and severance benefits in late 2019. Consumers will seek recovery of these costs from customers.
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| Consumers Energy Company | |
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |
| Asset Sales and Exit Activities | Asset Sales and Exit Activities Enterprises In April 2019, DIG completed a sale of transmission equipment to ITC and recognized a pre-tax gain of $16 million within maintenance and other operating expenses on CMS Energy’s consolidated statements of income. Consumers Asset Sale: In September 2019, Consumers completed a sale of a portion of its electric utility’s substation transmission equipment to METC and recognized a pre-tax gain of $34 million within maintenance and other operating expenses on Consumers’ consolidated statements of income. Exit Activities: Under its Clean Energy Plan, Consumers plans to retire the D.E. Karn 1 & 2 coal-fueled electric generating units in 2023. For additional details on Consumers’ plans to request recovery of the remaining book value of the two units upon their retirement, see Note 2, Regulatory Matters. In October 2019, Consumers announced a retention incentive program to ensure necessary staffing at the D.E. Karn generating complex through the anticipated retirement of the coal-fueled electric generating units. Based on the number of employees that have chosen to participate, the aggregate cost of the program through 2023 is estimated to be $35 million. Consumers expects to recognize $6 million of expense related to retention and severance benefits in late 2019. Consumers will seek recovery of these costs from customers.
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New Accounting Standards (Policies) |
9 Months Ended |
|---|---|
Sep. 30, 2019 | |
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |
| New accounting standards | Implementation of New Accounting Standards ASU 2016‑02, Leases: This standard, which was effective on January 1, 2019 for CMS Energy and Consumers, establishes a new accounting model for leases. The standard requires lessees to recognize lease assets and liabilities on the balance sheet for all leases with a term of more than one year, including operating leases, which were not recorded on the balance sheet under previous standards. The new guidance also amends the definition of a lease to require that a lessee have the right to control the use of a specified asset, and not simply control or take the output of the asset. On the statement of income, operating leases are generally accounted for under a straight-line expense model, while finance leases, which were previously referred to as capital leases, are generally accounted for under a financing model. Consistent with the previous lease guidance, however, the standard allows rate-regulated utilities to recognize expense consistent with the timing of recovery in rates. CMS Energy and Consumers elected to use certain practical expedients permitted by the standard, under which they were not required to perform lease assessments or reassessments for agreements existing on the effective date. They also elected a transition method under which they initially applied the standard on January 1, 2019, without adjusting amounts presented for prior periods. Under the standard, CMS Energy and Consumers recognized additional lease assets and liabilities on their consolidated balance sheets as of January 1, 2019 for their operating leases. In addition, in accordance with the standard, they have provided additional disclosures about their leases in Note 8, Leases. The standard did not have any impact on CMS Energy’s and Consumers’ consolidated net income or cash flows, and there was no cumulative-effect adjustment recorded to beginning retained earnings. New Accounting Standards Not Yet Effective ASU 2016‑13, Measurement of Credit Losses on Financial Instruments: This standard, which will be effective January 1, 2020 for CMS Energy and Consumers, provides new guidance for measuring and recognizing credit losses on financial instruments. The standard applies to financial assets that are not measured at fair value through net income. Entities will apply the standard using a modified retrospective approach, with a cumulative‑effect adjustment recorded to beginning retained earnings on the effective date. The standard will require an increase to the allowance for loan losses at EnerBank. The allowance presently reflects expected credit losses over a 12-month period, but the new standard will require the allowance to reflect expected credit losses over the entire life of the loans. EnerBank will record the initial increase to the allowance on January 1, 2020, with the offsetting adjustment recorded to retained earnings. The standard will also require an increase in the initial provision for loan losses recognized in net income for new loans originated in 2020 and beyond. At Consumers, the new guidance will apply to the allowance for uncollectible accounts; however, Consumers does not expect material impacts in this area. CMS Energy and Consumers are continuing to evaluate the standard.
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| Allowance for loan losses | The allowance for loan losses is a valuation allowance to reflect estimated credit losses. The allowance is increased by the provision for loan losses and decreased by loan charge‑offs net of recoveries. Management estimates the allowance balance required by taking into consideration historical loan loss experience, the nature and volume of the portfolio, economic conditions, and other factors. Loan losses are charged against the allowance when the loss is confirmed, but no later than the point at which a loan becomes 120 days past due.
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| Consumers Energy Company | |
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |
| New accounting standards | Implementation of New Accounting Standards ASU 2016‑02, Leases: This standard, which was effective on January 1, 2019 for CMS Energy and Consumers, establishes a new accounting model for leases. The standard requires lessees to recognize lease assets and liabilities on the balance sheet for all leases with a term of more than one year, including operating leases, which were not recorded on the balance sheet under previous standards. The new guidance also amends the definition of a lease to require that a lessee have the right to control the use of a specified asset, and not simply control or take the output of the asset. On the statement of income, operating leases are generally accounted for under a straight-line expense model, while finance leases, which were previously referred to as capital leases, are generally accounted for under a financing model. Consistent with the previous lease guidance, however, the standard allows rate-regulated utilities to recognize expense consistent with the timing of recovery in rates. CMS Energy and Consumers elected to use certain practical expedients permitted by the standard, under which they were not required to perform lease assessments or reassessments for agreements existing on the effective date. They also elected a transition method under which they initially applied the standard on January 1, 2019, without adjusting amounts presented for prior periods. Under the standard, CMS Energy and Consumers recognized additional lease assets and liabilities on their consolidated balance sheets as of January 1, 2019 for their operating leases. In addition, in accordance with the standard, they have provided additional disclosures about their leases in Note 8, Leases. The standard did not have any impact on CMS Energy’s and Consumers’ consolidated net income or cash flows, and there was no cumulative-effect adjustment recorded to beginning retained earnings. New Accounting Standards Not Yet Effective ASU 2016‑13, Measurement of Credit Losses on Financial Instruments: This standard, which will be effective January 1, 2020 for CMS Energy and Consumers, provides new guidance for measuring and recognizing credit losses on financial instruments. The standard applies to financial assets that are not measured at fair value through net income. Entities will apply the standard using a modified retrospective approach, with a cumulative‑effect adjustment recorded to beginning retained earnings on the effective date. The standard will require an increase to the allowance for loan losses at EnerBank. The allowance presently reflects expected credit losses over a 12-month period, but the new standard will require the allowance to reflect expected credit losses over the entire life of the loans. EnerBank will record the initial increase to the allowance on January 1, 2020, with the offsetting adjustment recorded to retained earnings. The standard will also require an increase in the initial provision for loan losses recognized in net income for new loans originated in 2020 and beyond. At Consumers, the new guidance will apply to the allowance for uncollectible accounts; however, Consumers does not expect material impacts in this area. CMS Energy and Consumers are continuing to evaluate the standard.
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Contingencies And Commitments (Tables) |
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| Guarantees | Presented in the following table are CMS Energy’s and Consumers’ guarantees at September 30, 2019:
2 At Consumers, this obligation comprises a guarantee provided to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers. At CMS Energy, the guarantee obligations comprise Consumers’ guarantee to the U.S. Department of Energy and CMS Energy’s 1994 guarantee of non‑recourse revenue bonds issued by Genesee.
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| Site Contingency [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Guarantees | Presented in the following table are CMS Energy’s and Consumers’ guarantees at September 30, 2019:
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| Site Contingency [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Expected Remediation Costs By Year | . CMS Energy expects to pay the following amounts for long‑term liquid disposal and operating and maintenance costs during the remainder of 2019 and in each of the next five years:
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| Gas Utility | Manufactured Gas Plant | Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Site Contingency [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Expected Remediation Costs By Year | . Consumers expects to pay the following amounts for remediation and other response activity costs during the remainder of 2019 and in each of the next five years:
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Financings and Capitalization (Tables) |
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| Debt Instrument [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Major Long-Term Debt Transactions | Financings: Presented in the following table is a summary of major long‑term debt transactions during the nine months ended September 30, 2019:
3 These floating rate first mortgage bonds bear interest quarterly at a rate of three-month LIBOR minus 0.300 percent (1.864 percent at September 30, 2019).
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| Revolving Credit Facilities | Revolving Credit Facilities: The following revolving credit facilities with banks were available at September 30, 2019:
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| Schedule of Forward Contracts Indexed to Issuer's Equity | Presented in the following table are details of these contracts:
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| Debt Instrument [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Major Long-Term Debt Transactions | Financings: Presented in the following table is a summary of major long‑term debt transactions during the nine months ended September 30, 2019:
3 These floating rate first mortgage bonds bear interest quarterly at a rate of three-month LIBOR minus 0.300 percent (1.864 percent at September 30, 2019).
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| Revolving Credit Facilities | Revolving Credit Facilities: The following revolving credit facilities with banks were available at September 30, 2019:
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Fair Value Measurements (Tables) |
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Assets And Liabilities Measured At Fair Value On A Recurring Basis | Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Assets And Liabilities Measured At Fair Value On A Recurring Basis | Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:
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Financial Instruments (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Carrying Amounts And Fair Values Of Financial Instruments | Presented in the following table are the carrying amounts and fair values, by level within the fair value hierarchy, of CMS Energy’s and Consumers’ financial instruments that are not recorded at fair value. The table excludes cash, cash equivalents, short‑term financial instruments, and trade accounts receivable and payable whose carrying amounts approximate their fair values. For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 5, Fair Value Measurements.
6 Includes current portion of long‑term debt of $102 million at September 30, 2019 and $26 million at December 31, 2018.
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| Schedule Of Investment Securities | Presented in the following table are these investment securities:
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Carrying Amounts And Fair Values Of Financial Instruments | Presented in the following table are the carrying amounts and fair values, by level within the fair value hierarchy, of CMS Energy’s and Consumers’ financial instruments that are not recorded at fair value. The table excludes cash, cash equivalents, short‑term financial instruments, and trade accounts receivable and payable whose carrying amounts approximate their fair values. For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 5, Fair Value Measurements.
6 Includes current portion of long‑term debt of $102 million at September 30, 2019 and $26 million at December 31, 2018.
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Notes Receivable (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Current And Non-Current Notes Receivable | Presented in the following table are details of CMS Energy’s and Consumers’ current and non‑current notes receivable:
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Current And Non-Current Notes Receivable | Presented in the following table are details of CMS Energy’s and Consumers’ current and non‑current notes receivable:
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Leases (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Assets and Liabilities of Lessee | Presented in the following table is information about CMS Energy’s and Consumers’ lease right-of-use assets and lease liabilities:
5 This rate excludes the impact of Consumers’ pipeline agreements and long-term PPAs accounted for as finance leases. The required capacity payments under these agreements, when compared to the underlying fair value of the leased assets, result in effective interest rates that exceed market rates for leases with similar terms.
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| Lease Cost | Presented in the following table is cash flow information related to amounts paid on CMS Energy’s and Consumers’ lease liabilities:
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| Lessee Operating Lease Liability and Finance Liability Maturity | Presented in the following table are the minimum rental commitments under CMS Energy’s and Consumers’ non‑cancelable leases at December 31, 2018, prior to the adoption of ASU 2016‑02:
Presented in the following table are the minimum rental commitments under CMS Energy’s and Consumers’ non‑cancelable leases:
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| Lessor, Operating Lease, Payments to be Received, Maturity | Presented in the following table are the minimum rental payments to be received under CMS Energy’s non‑cancelable operating leases:
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| Sales-type and Direct Financing Leases, Lease Receivable, Maturity | Presented in the following table are the minimum rental payments to be received under CMS Energy’s and Consumers’ non‑cancelable direct financing leases:
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Assets and Liabilities of Lessee | Presented in the following table is information about CMS Energy’s and Consumers’ lease right-of-use assets and lease liabilities:
5 This rate excludes the impact of Consumers’ pipeline agreements and long-term PPAs accounted for as finance leases. The required capacity payments under these agreements, when compared to the underlying fair value of the leased assets, result in effective interest rates that exceed market rates for leases with similar terms.
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| Lease Cost | Presented in the following table is cash flow information related to amounts paid on CMS Energy’s and Consumers’ lease liabilities:
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| Lessee Operating Lease Liability and Finance Liability Maturity | Presented in the following table are the minimum rental commitments under CMS Energy’s and Consumers’ non‑cancelable leases:
Presented in the following table are the minimum rental commitments under CMS Energy’s and Consumers’ non‑cancelable leases at December 31, 2018, prior to the adoption of ASU 2016‑02:
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| Sales-type and Direct Financing Leases, Lease Receivable, Maturity | Presented in the following table are the minimum rental payments to be received under CMS Energy’s and Consumers’ non‑cancelable direct financing leases:
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Retirement Benefits (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Defined Benefit Plan Disclosure [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Net Benefit Costs | Presented in the following table are the costs (credits) and other changes in plan assets and benefit obligations incurred in CMS Energy’s and Consumers’ retirement benefits plans:
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Defined Benefit Plan Disclosure [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Net Benefit Costs | Presented in the following table are the costs (credits) and other changes in plan assets and benefit obligations incurred in CMS Energy’s and Consumers’ retirement benefits plans:
|
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Income Taxes (Tables) |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Taxes [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Effective Income Tax Rate Reconciliation | Presented in the following table is a reconciliation of the statutory U.S. federal income tax rate to the effective income tax rate from continuing operations:
3 In March 2018, Consumers finalized a study of research and development tax credits for the tax years 2012 through 2016. As a result, Consumers recognized an $8 million increase in the credit, net of reserves for uncertain tax positions, at that time.
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| Consumers Energy Company | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Taxes [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Effective Income Tax Rate Reconciliation | Presented in the following table is a reconciliation of the statutory U.S. federal income tax rate to the effective income tax rate from continuing operations:
3 In March 2018, Consumers finalized a study of research and development tax credits for the tax years 2012 through 2016. As a result, Consumers recognized an $8 million increase in the credit, net of reserves for uncertain tax positions, at that time.
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Earnings Per Share - CMS Energy (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Basic and Diluted EPS Computations | Presented in the following table are CMS Energy’s basic and diluted EPS computations based on net income:
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Revenue (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Revenue, Initial Application Period Cumulative Effect Transition [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Components Of Operating Revenue | Presented in the following tables are the components of operating revenue:
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Revenue, Initial Application Period Cumulative Effect Transition [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Components Of Operating Revenue | Presented in the following tables are the components of operating revenue:
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Cash And Cash Equivalents (Tables) |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash and Cash Equivalents [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Cash And Cash Equivalents, Including Restricted Amounts | Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:
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| Consumers Energy Company | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash and Cash Equivalents [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Cash And Cash Equivalents, Including Restricted Amounts | Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:
|
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Reportable Segments (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Segment Reporting Information [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Financial Information By Reportable Segments | Presented in the following tables is financial information by reportable segment:
2 Costs related to coal-fueled electric generating units to be retired in 2023 were removed and recorded as a regulatory asset in June 2019. For additional details, see Note 2, Regulatory Matters.
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| Consumers Energy Company | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Reporting Information [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule Of Financial Information By Reportable Segments | Presented in the following tables is financial information by reportable segment:
2 Costs related to coal-fueled electric generating units to be retired in 2023 were removed and recorded as a regulatory asset in June 2019. For additional details, see Note 2, Regulatory Matters.
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Contingencies And Commitments (Expected Remediation Cost By Year) (Details) $ in Millions |
Sep. 30, 2019
USD ($)
|
|---|---|
| Bay Harbor | |
| Site Contingency [Line Items] | |
| 2019 | $ 2 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 4 |
| 2024 | 4 |
| Gas Utility | Manufactured Gas Plant | Consumers Energy Company | |
| Site Contingency [Line Items] | |
| 2019 | 3 |
| 2020 | 13 |
| 2021 | 12 |
| 2022 | 20 |
| 2023 | 11 |
| 2024 | $ 2 |
Contingencies And Commitments (Guarantees) (Details) $ in Millions |
9 Months Ended |
|---|---|
|
Sep. 30, 2019
USD ($)
| |
| Guarantees | |
| Guarantees And Other Contingencies [Line Items] | |
| Guarantee Description | Guarantees |
| Expiration Date | indefinite |
| Maximum Obligation | $ 36 |
| Carrying Amount | $ 0 |
| Guarantees | Consumers Energy Company | |
| Guarantees And Other Contingencies [Line Items] | |
| Guarantee Description | Guarantee |
| Expiration Date | indefinite |
| Maximum Obligation | $ 30 |
| Carrying Amount | $ 0 |
| Indemnity Obligations From Stock And Asset Sales Agreements | |
| Guarantees And Other Contingencies [Line Items] | |
| Guarantee Description | Indemnity obligations from stock and asset sales agreements |
| Expiration Date | indefinite |
| Maximum Obligation | $ 153 |
| Carrying Amount | 2 |
| Tax And Other Indemnity Obligations | Consumers Energy Company | |
| Guarantees And Other Contingencies [Line Items] | |
| Carrying Amount | $ 1 |
Financings and Capitalization (Forward Stock Contracts) (Details) - $ / shares |
Feb. 21, 2019 |
Nov. 20, 2018 |
Nov. 16, 2018 |
|---|---|---|---|
| Forward Contracts Maturing May 16, 2020 | |||
| Debt and Equity Securities, FV-NI [Line Items] | |||
| Number of Shares | 2,017,783 | ||
| Initial forward price (in dollars per share) | $ 49.06 | ||
| Forward Contracts Maturing May 20, 2020 | |||
| Debt and Equity Securities, FV-NI [Line Items] | |||
| Number of Shares | 777,899 | ||
| Initial forward price (in dollars per share) | $ 50.91 | ||
| Forward Contracts Maturing August 21, 2020 | |||
| Debt and Equity Securities, FV-NI [Line Items] | |||
| Number of Shares | 2,083,340 | ||
| Initial forward price (in dollars per share) | $ 52.27 |
Financial Instruments (Narrative) (Details) - USD ($) $ in Millions |
Sep. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Consumers Energy Company | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Portion of long-term debt supported by third-party credit enhancements | $ 35 | $ 35 |
Financial Instruments (Schedule Of Investment Securities) (Details) - USD ($) $ in Millions |
Sep. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Held to maturity | ||
| Cost | $ 24 | $ 22 |
| Unrealized Gains | 1 | 0 |
| Unrealized Losses | 0 | 1 |
| Securities held to maturity | $ 25 | $ 21 |
Notes Receivable (Schedule Of Current And Non-Current Notes Receivable) (Details) - USD ($) $ in Millions |
Sep. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Current | ||
| EnerBank notes receivable, net of allowance for loan losses | $ 234 | $ 233 |
| Consumers Energy Company | ||
| Current | ||
| DB SERP note receivable – related party | 7 | 7 |
| Non‑current | ||
| DB SERP note receivable – related party | 97 | 99 |
| Total notes receivable | 104 | 106 |
| EnerBank | ||
| Current | ||
| EnerBank notes receivable, net of allowance for loan losses | 234 | 233 |
| Non‑current | ||
| EnerBank notes receivable | 2,230 | 1,624 |
| Total notes receivable | $ 2,464 | $ 1,857 |
Notes Receivable (Narrative) (Details) - USD ($) $ in Millions |
Sep. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| EnerBank | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Notes receivable | $ 2,464 | $ 1,857 |
| Unearned income | 133 | 102 |
| Delinquent loans | 27 | $ 21 |
| Retail Installment Contracts | EnerBank | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Notes receivable | $ 333 | |
| CMS Energy Note Payable | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Interest Rate | 4.10% |
Leases - Schedule of Lease Costs (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended |
|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2019 |
|
| Lessee, Lease, Description [Line Items] | ||
| Operating lease costs | $ 2 | $ 8 |
| Finance lease costs | ||
| Amortization of right-of-use assets | 2 | 6 |
| Interest on lease liabilities | 4 | 13 |
| Variable lease costs | 20 | 75 |
| Total lease costs | 28 | 102 |
| Consumers Energy Company | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease costs | 2 | 7 |
| Finance lease costs | ||
| Amortization of right-of-use assets | 2 | 6 |
| Interest on lease liabilities | 4 | 13 |
| Variable lease costs | 20 | 75 |
| Total lease costs | $ 28 | $ 101 |
Leases - Schedule of Lessee Cash Flows (Details) $ in Millions |
9 Months Ended |
|---|---|
|
Sep. 30, 2019
USD ($)
| |
| Lessee, Lease, Description [Line Items] | |
| Cash used in operating activities for operating leases | $ 8 |
| Cash used in operating activities for finance leases | 13 |
| Cash used in financing activities for finance leases | 5 |
| Consumers Energy Company | |
| Lessee, Lease, Description [Line Items] | |
| Cash used in operating activities for operating leases | 7 |
| Cash used in operating activities for finance leases | 13 |
| Cash used in financing activities for finance leases | $ 5 |
Leases - Minimum Annual Rental Commitments pre Topic 842 (Details) $ in Millions |
Dec. 31, 2018
USD ($)
|
|---|---|
| Capital Leases | |
| 2019 | $ 14 |
| 2020 | 11 |
| 2021 | 11 |
| 2022 | 8 |
| 2023 | 6 |
| 2024 and thereafter | 21 |
| Total minimum lease payments | 71 |
| Less discount | 22 |
| Present value of minimum lease payments | 49 |
| Less current portion | 9 |
| Non-current portion | 40 |
| Operating Leases | |
| 2019 | 16 |
| 2020 | 15 |
| 2021 | 15 |
| 2022 | 8 |
| 2023 | 5 |
| 2024 and thereafter | 38 |
| Total minimum lease payments | 97 |
| Consumers Energy Company | |
| Capital Leases | |
| 2019 | 14 |
| 2020 | 11 |
| 2021 | 11 |
| 2022 | 8 |
| 2023 | 6 |
| 2024 and thereafter | 21 |
| Total minimum lease payments | 71 |
| Less discount | 22 |
| Present value of minimum lease payments | 49 |
| Less current portion | 9 |
| Non-current portion | 40 |
| Operating Leases | |
| 2019 | 14 |
| 2020 | 14 |
| 2021 | 13 |
| 2022 | 7 |
| 2023 | 5 |
| 2024 and thereafter | 32 |
| Total minimum lease payments | $ 85 |
Leases - Lessor Leases Narrative (Details) $ in Millions |
3 Months Ended | 9 Months Ended |
|---|---|---|
|
Sep. 30, 2019
USD ($)
|
Sep. 30, 2019
USD ($)
|
|
| Power Sales Agreement | ||
| Lessor, Lease, Description [Line Items] | ||
| Leasing income | $ 42 | $ 132 |
| Variable lease income | $ 28 | $ 91 |
| CMS Energy Subsidiary | Natural Gas Transportation Agreement | Consumers Energy Company | ||
| Lessor, Lease, Description [Line Items] | ||
| Direct financing lease term | 20 years | 20 years |
Leases - Schedule of Future Payments to be Received (Details) $ in Millions |
Sep. 30, 2019
USD ($)
|
|---|---|
| Operating Leases | |
| Remainder of 2019 | $ 14 |
| 2020 | 55 |
| 2021 | 54 |
| 2022 | 48 |
| 2023 | 43 |
| 2024 | 43 |
| 2025 and thereafter | 62 |
| Total minimum lease payments | 319 |
| Direct Financing Leases | |
| Remainder of 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 and thereafter | 10 |
| Total minimum lease payments | 10 |
| Less unearned income | 5 |
| Present value of lease payments recognized as lease receivables | 5 |
| Consumers Energy Company | |
| Direct Financing Leases | |
| Remainder of 2019 | 0 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 and thereafter | 19 |
| Total minimum lease payments | 24 |
| Less unearned income | 14 |
| Present value of lease payments recognized as lease receivables | $ 10 |
Earnings Per Share - CMS Energy (Basic And Diluted EPS Computations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
|
| Income available to common stockholders | ||||
| Net income | $ 207 | $ 169 | $ 514 | $ 550 |
| Income Attributable to Noncontrolling Interests | 0 | 0 | 1 | 1 |
| Net Income Available to Common Stockholders | $ 207 | $ 169 | $ 513 | $ 549 |
| Average common shares outstanding | ||||
| Weighted average shares - basic (in shares) | 283.0 | 282.5 | 282.9 | 282.1 |
| Dilutive nonvested stock awards (in shares) | 0.8 | 0.7 | 0.8 | 0.7 |
| Dilutive forward equity sale contracts (in shares) | 0.8 | 0.0 | 0.5 | 0.0 |
| Weighted average shares - diluted (in shares) | 284.6 | 283.2 | 284.2 | 282.8 |
| Net income per average common share available to common stockholders | ||||
| Basic earnings per average common share (in dollars per share) | $ 0.73 | $ 0.60 | $ 1.81 | $ 1.95 |
| Diluted earnings per average common share (in dollars per share) | $ 0.73 | $ 0.59 | $ 1.81 | $ 1.94 |
Revenue (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
Dec. 31, 2018 |
|
| Revenue, Initial Application Period Cumulative Effect Transition [Line Items] | |||||
| Uncollectable expense | $ 9 | $ 8 | $ 21 | $ 22 | |
| Consumers Energy Company | |||||
| Revenue, Initial Application Period Cumulative Effect Transition [Line Items] | |||||
| Unbilled receivables | $ 249 | $ 249 | $ 409 | ||
Cash And Cash Equivalents (Schedule Of Cash And Cash Equivalents, Including Restricted Amounts) (Details) - USD ($) $ in Millions |
Sep. 30, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Dec. 31, 2017 |
|---|---|---|---|---|
| Cash and Cash Equivalents [Line Items] | ||||
| Cash and cash equivalents | $ 403 | $ 153 | ||
| Restricted cash and cash equivalents | 29 | 21 | ||
| Other non-current assets | 1 | 1 | ||
| Cash and cash equivalents, including restricted amounts | 433 | 175 | $ 366 | $ 204 |
| Consumers Energy Company | ||||
| Cash and Cash Equivalents [Line Items] | ||||
| Cash and cash equivalents | 259 | 39 | ||
| Restricted cash and cash equivalents | 25 | 17 | ||
| Cash and cash equivalents, including restricted amounts | $ 284 | $ 56 | $ 38 | $ 65 |