10-Q Filing

CMS ENERGY CORP CIK: 811156 Q3 2018

Filing Information

Form Type	10-Q
Accession Number	`0000811156-18-000005`
Period End Date	20180930
Filing Date	20181025
Fiscal Year	2018
Fiscal Period	Q3
XBRL Instance	cms-20180930.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 116 Income Statement 108 Cash Flow Statement 64 Stockholders Equity 34 Comprehensive Income 52

Balance Sheet 116 line items

Line Item	Tag	Value	Unit	Period
Accounts receivable and accrued revenue ALLOWANCE	`AllowanceForDoubtfulAccountsReceivableCurrent`	$20.00M	USD	Point-in-time
Accounts receivable and accrued revenue ALLOWANCE	`AllowanceForDoubtfulAccountsReceivableCurrent`	$20.00M	USD	Point-in-time
Accounts and notes receivable ALLOWANCE	`AllowanceForNotesAndLoansReceivableCurrent`	$20.00M	USD	Point-in-time
Accounts and notes receivable ALLOWANCE	`AllowanceForNotesAndLoansReceivableCurrent`	$23.00M	USD	Point-in-time
Common Stock, Shares Authorized (in shares)	`CommonStockSharesAuthorized`	350.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$182.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$323.00M	USD	Point-in-time
Common Stock, Shares Authorized (in shares)	`CommonStockSharesAuthorized`	350.00M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	283.30M	shares	Point-in-time
Restricted cash and cash equivalents	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$42.00M	USD	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	281.60M	shares	Point-in-time
Restricted cash and cash equivalents	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$17.00M	USD	Point-in-time
Accounts receivable and accrued revenue, less allowance of $20 in both periods	`AccountsReceivableNetCurrent`	$710.00M	USD	Point-in-time
Accounts receivable and accrued revenue, less allowance of $20 in both periods	`AccountsReceivableNetCurrent`	$1.03B	USD	Point-in-time
Notes receivable, less allowance of $23 in 2018 and $20 in 2017	`NotesAndLoansReceivableNetCurrent`	$237.00M	USD	Point-in-time
Notes receivable, less allowance of $23 in 2018 and $20 in 2017	`NotesAndLoansReceivableNetCurrent`	$198.00M	USD	Point-in-time
Notes receivable held for sale	`LoansReceivableHeldForSaleAmount`	$2.00M	USD	Point-in-time
Notes receivable held for sale	`LoansReceivableHeldForSaleAmount`	$26.00M	USD	Point-in-time
Accounts receivable related parties	`DueFromRelatedPartiesCurrent`	$12.00M	USD	Point-in-time
Accounts receivable related parties	`DueFromRelatedPartiesCurrent`	$15.00M	USD	Point-in-time
Gas in underground storage	`EnergyRelatedInventoryGasStoredUnderground`	$458.00M	USD	Point-in-time
Gas in underground storage	`EnergyRelatedInventoryGasStoredUnderground`	$551.00M	USD	Point-in-time
Materials and supplies	`OtherInventorySupplies`	$133.00M	USD	Point-in-time
Materials and supplies	`OtherInventorySupplies`	$140.00M	USD	Point-in-time
Generating plant fuel stock	`EnergyRelatedInventoryOtherFossilFuel`	$81.00M	USD	Point-in-time
Generating plant fuel stock	`EnergyRelatedInventoryOtherFossilFuel`	$50.00M	USD	Point-in-time
Deferred property taxes	`DeferredPropertyTaxes`	$257.00M	USD	Point-in-time
Deferred property taxes	`DeferredPropertyTaxes`	$167.00M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsCurrent`	$20.00M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsCurrent`	$10.00M	USD	Point-in-time
Prepayments and other current assets	`OtherAssetsCurrent`	$83.00M	USD	Point-in-time
Prepayments and other current assets	`OtherAssetsCurrent`	$103.00M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.37B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.48B	USD	Point-in-time
Plant, property, and equipment, gross	`PropertyPlantAndEquipmentGrossExcludingCWIP`	$22.51B	USD	Point-in-time
Plant, property, and equipment, gross	`PropertyPlantAndEquipmentGrossExcludingCWIP`	$23.75B	USD	Point-in-time
Less accumulated depreciation and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$6.51B	USD	Point-in-time
Less accumulated depreciation and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$6.91B	USD	Point-in-time
Plant, property, and equipment, net	`PropertyPlantAndEquipmentNetExcludingCWIP`	$16.00B	USD	Point-in-time
Plant, property, and equipment, net	`PropertyPlantAndEquipmentNetExcludingCWIP`	$16.84B	USD	Point-in-time
Construction work in progress	`ConstructionInProgressGross`	$948.00M	USD	Point-in-time
Construction work in progress	`ConstructionInProgressGross`	$765.00M	USD	Point-in-time
Total plant, property, and equipment	`PropertyPlantAndEquipmentNet`	$16.76B	USD	Point-in-time
Total plant, property, and equipment	`PropertyPlantAndEquipmentNet`	$17.79B	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$1.76B	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$1.66B	USD	Point-in-time
Accounts and notes receivable	`LongTermAccountsNotesAndLoansReceivableNetNoncurrent`	$1.39B	USD	Point-in-time
Accounts and notes receivable	`LongTermAccountsNotesAndLoansReceivableNetNoncurrent`	$1.19B	USD	Point-in-time
Investments	`EquityMethodInvestments`	$64.00M	USD	Point-in-time
Investments	`EquityMethodInvestments`	$72.00M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$799.00M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$629.00M	USD	Point-in-time
Total other non-current assets	`AssetsNoncurrentOtherThanPropertyPlantAndEquipment`	$3.81B	USD	Point-in-time
Total other non-current assets	`AssetsNoncurrentOtherThanPropertyPlantAndEquipment`	$3.75B	USD	Point-in-time
Total Assets	`Assets`	$23.91B	USD	Point-in-time
Total Assets	`Assets`	$23.05B	USD	Point-in-time
Current portion of long-term debt, capital leases, and financing obligation	`DebtCurrent`	$1.10B	USD	Point-in-time
Current portion of long-term debt, capital leases, and financing obligation	`DebtCurrent`	$1.97B	USD	Point-in-time
Notes payable	`NotesPayableCurrent`	$170.00M	USD	Point-in-time
Notes payable	`NotesPayableCurrent`	$279.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$680.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$725.00M	USD	Point-in-time
Accounts payable related parties	`DueToRelatedPartiesCurrent`	$9.00M	USD	Point-in-time
Accounts payable related parties	`DueToRelatedPartiesCurrent`	$15.00M	USD	Point-in-time
Accrued rate refunds	`AccruedRateRefunds`	$14.00M	USD	Point-in-time
Accrued rate refunds	`AccruedRateRefunds`	$33.00M	USD	Point-in-time
Accrued interest	`InterestAndDividendsPayableCurrent`	$83.00M	USD	Point-in-time
Accrued interest	`InterestAndDividendsPayableCurrent`	$103.00M	USD	Point-in-time
Accrued taxes	`TaxesPayableCurrent`	$360.00M	USD	Point-in-time
Accrued taxes	`TaxesPayableCurrent`	$107.00M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityCurrent`	$80.00M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityCurrent`	$165.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$195.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$134.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$3.44B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.78B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$9.12B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$8.87B	USD	Point-in-time
Non-current portion of capital leases and financing obligation	`CapitalLeaseObligationsNoncurrent`	$75.00M	USD	Point-in-time
Non-current portion of capital leases and financing obligation	`CapitalLeaseObligationsNoncurrent`	$91.00M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$3.75B	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$3.71B	USD	Point-in-time
Postretirement benefits	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$797.00M	USD	Point-in-time
Postretirement benefits	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$766.00M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$430.00M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$421.00M	USD	Point-in-time
Deferred investment tax credit	`AccumulatedDeferredInvestmentTaxCredit`	$87.00M	USD	Point-in-time
Deferred investment tax credit	`AccumulatedDeferredInvestmentTaxCredit`	$101.00M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.27B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.38B	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$307.00M	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$295.00M	USD	Point-in-time
Total non-current liabilities	`LiabilitiesNoncurrent`	$15.79B	USD	Point-in-time
Total non-current liabilities	`LiabilitiesNoncurrent`	$15.69B	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock, authorized 350.0 shares; outstanding 283.3 shares in 2018 and 281.6 shares in 2017	`CommonStockValue`	$3.00M	USD	Point-in-time
Common stock, authorized 350.0 shares; outstanding 283.3 shares in 2018 and 281.6 shares in 2017	`CommonStockValue`	$3.00M	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$5.02B	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$5.08B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-59.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-50.00M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-531.00M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-278.00M	USD	Point-in-time
Total common stockholders equity	`StockholdersEquity`	$4.44B	USD	Point-in-time
Total common stockholders equity	`StockholdersEquity`	$4.75B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$37.00M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$37.00M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.57B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.48B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.71B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.29B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.49B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.79B	USD	Point-in-time
Total Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$23.91B	USD	Point-in-time
Total Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$23.05B	USD	Point-in-time

Income Statement 108 line items

Line Item	Tag	Value	Unit	Period
Operating Revenue	`Revenues`	$4.80B	USD	3 Qtrs
Operating Revenue	`Revenues`	$1.53B	USD	1 Quarter
Operating Revenue	`Revenues`	$1.60B	USD	1 Quarter
Operating Revenue	`Revenues`	$5.04B	USD	3 Qtrs
Fuel for electric generation	`FuelCosts`	$397.00M	USD	3 Qtrs
Fuel for electric generation	`FuelCosts`	$386.00M	USD	3 Qtrs
Fuel for electric generation	`FuelCosts`	$150.00M	USD	1 Quarter
Fuel for electric generation	`FuelCosts`	$144.00M	USD	1 Quarter
Purchased power related parties	`PurchasedPowerRelatedParties`	$21.00M	USD	1 Quarter
Purchased power related parties	`PurchasedPowerRelatedParties`	$64.00M	USD	3 Qtrs
Purchased power related parties	`PurchasedPowerRelatedParties`	$21.00M	USD	1 Quarter
Purchased power related parties	`PurchasedPowerRelatedParties`	$59.00M	USD	3 Qtrs
Maintenance and other operating expenses	`OtherCostAndExpenseOperating`	$366.00M	USD	1 Quarter
Maintenance and other operating expenses	`OtherCostAndExpenseOperating`	$304.00M	USD	1 Quarter
Maintenance and other operating expenses	`OtherCostAndExpenseOperating`	$909.00M	USD	3 Qtrs
Maintenance and other operating expenses	`OtherCostAndExpenseOperating`	$1.00B	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$652.00M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$206.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$193.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$689.00M	USD	3 Qtrs
General taxes	`TaxesExcludingIncomeAndExciseTaxes`	$209.00M	USD	3 Qtrs
General taxes	`TaxesExcludingIncomeAndExciseTaxes`	$222.00M	USD	3 Qtrs
General taxes	`TaxesExcludingIncomeAndExciseTaxes`	$67.00M	USD	1 Quarter
General taxes	`TaxesExcludingIncomeAndExciseTaxes`	$62.00M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.20B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.30B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$3.85B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$4.13B	USD	3 Qtrs
Operating Income	`OperatingIncomeLoss`	$959.00M	USD	3 Qtrs
Operating Income	`OperatingIncomeLoss`	$294.00M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$912.00M	USD	3 Qtrs
Operating Income	`OperatingIncomeLoss`	$330.00M	USD	1 Quarter
Interest income	`InvestmentIncomeInterestAndDividend`	$3.00M	USD	1 Quarter
Interest income	`InvestmentIncomeInterestAndDividend`	$10.00M	USD	3 Qtrs
Interest income	`InvestmentIncomeInterestAndDividend`	$2.00M	USD	1 Quarter
Interest income	`InvestmentIncomeInterestAndDividend`	$8.00M	USD	3 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$1.00M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$4.00M	USD	3 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$5.00M	USD	3 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$2.00M	USD	1 Quarter
Income (loss) from equity method investees	`IncomeLossFromEquityMethodInvestments`	$6.00M	USD	3 Qtrs
Income (loss) from equity method investees	`IncomeLossFromEquityMethodInvestments`	$3.00M	USD	1 Quarter
Income (loss) from equity method investees	`IncomeLossFromEquityMethodInvestments`	$10.00M	USD	3 Qtrs
Income (loss) from equity method investees	`IncomeLossFromEquityMethodInvestments`	$-1.00M	USD	1 Quarter
Nonoperating retirement benefits, net	`OtherNonoperatingIncomeExpenseRetirementBenefitsNet`	$22.00M	USD	1 Quarter
Nonoperating retirement benefits, net	`OtherNonoperatingIncomeExpenseRetirementBenefitsNet`	$3.00M	USD	1 Quarter
Nonoperating retirement benefits, net	`OtherNonoperatingIncomeExpenseRetirementBenefitsNet`	$10.00M	USD	3 Qtrs
Nonoperating retirement benefits, net	`OtherNonoperatingIncomeExpenseRetirementBenefitsNet`	$68.00M	USD	3 Qtrs
Other income	`OtherNonoperatingIncome`	$2.00M	USD	1 Quarter
Other income	`OtherNonoperatingIncome`	$1.00M	USD	1 Quarter
Other income	`OtherNonoperatingIncome`	$4.00M	USD	3 Qtrs
Other income	`OtherNonoperatingIncome`	$2.00M	USD	3 Qtrs
Other expense	`OtherNonoperatingExpense`	$15.00M	USD	3 Qtrs
Other expense	`OtherNonoperatingExpense`	$6.00M	USD	3 Qtrs
Other expense	`OtherNonoperatingExpense`	$2.00M	USD	1 Quarter
Other expense	`OtherNonoperatingExpense`	$4.00M	USD	1 Quarter
Total other income	`NonoperatingIncomeExpense`	$33.00M	USD	3 Qtrs
Total other income	`NonoperatingIncomeExpense`	$10.00M	USD	1 Quarter
Total other income	`NonoperatingIncomeExpense`	$22.00M	USD	1 Quarter
Total other income	`NonoperatingIncomeExpense`	$73.00M	USD	3 Qtrs
Interest on long-term debt	`InterestExpenseDebt`	$101.00M	USD	1 Quarter
Interest on long-term debt	`InterestExpenseDebt`	$304.00M	USD	3 Qtrs
Interest on long-term debt	`InterestExpenseDebt`	$101.00M	USD	1 Quarter
Interest on long-term debt	`InterestExpenseDebt`	$304.00M	USD	3 Qtrs
Other interest expense	`InterestExpenseOther`	$26.00M	USD	3 Qtrs
Other interest expense	`InterestExpenseOther`	$35.00M	USD	3 Qtrs
Other interest expense	`InterestExpenseOther`	$14.00M	USD	1 Quarter
Other interest expense	`InterestExpenseOther`	$10.00M	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$2.00M	USD	3 Qtrs
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$2.00M	USD	3 Qtrs
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	-	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$1.00M	USD	1 Quarter
Total interest charges	`InterestExpense`	$328.00M	USD	3 Qtrs
Total interest charges	`InterestExpense`	$114.00M	USD	1 Quarter
Total interest charges	`InterestExpense`	$337.00M	USD	3 Qtrs
Total interest charges	`InterestExpense`	$111.00M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$664.00M	USD	3 Qtrs
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$202.00M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$648.00M	USD	3 Qtrs
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$229.00M	USD	1 Quarter
Income Tax Expense	`IncomeTaxExpenseBenefit`	$57.00M	USD	1 Quarter
Income Tax Expense	`IncomeTaxExpenseBenefit`	$200.00M	USD	3 Qtrs
Income Tax Expense	`IncomeTaxExpenseBenefit`	$33.00M	USD	1 Quarter
Income Tax Expense	`IncomeTaxExpenseBenefit`	$98.00M	USD	3 Qtrs
Net Income	`ProfitLoss`	$169.00M	USD	1 Quarter
Net Income	`ProfitLoss`	$172.00M	USD	1 Quarter
Net Income	`ProfitLoss`	$550.00M	USD	3 Qtrs
Net Income	`ProfitLoss`	$464.00M	USD	3 Qtrs
Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	3 Qtrs
Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	3 Qtrs
Net Income Available to Common Stockholders	`NetIncomeLoss`	$169.00M	USD	1 Quarter
Net Income Available to Common Stockholders	`NetIncomeLoss`	$549.00M	USD	3 Qtrs
Net Income Available to Common Stockholders	`NetIncomeLoss`	$463.00M	USD	3 Qtrs
Net Income Available to Common Stockholders	`NetIncomeLoss`	$172.00M	USD	1 Quarter
Basic earnings per average common share (in dollars per share)	`EarningsPerShareBasic`	$1.95	USD	3 Qtrs
Basic earnings per average common share (in dollars per share)	`EarningsPerShareBasic`	$0.60	USD	1 Quarter
Basic earnings per average common share (in dollars per share)	`EarningsPerShareBasic`	$0.61	USD	1 Quarter
Basic earnings per average common share (in dollars per share)	`EarningsPerShareBasic`	$1.65	USD	3 Qtrs
Diluted earnings per average common share (in dollars per share)	`EarningsPerShareDiluted`	$1.65	USD	3 Qtrs
Diluted earnings per average common share (in dollars per share)	`EarningsPerShareDiluted`	$1.94	USD	3 Qtrs
Diluted earnings per average common share (in dollars per share)	`EarningsPerShareDiluted`	$0.59	USD	1 Quarter
Diluted earnings per average common share (in dollars per share)	`EarningsPerShareDiluted`	$0.61	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.07	USD	3 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.33	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.00	USD	3 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.36	USD	1 Quarter

Cash Flow Statement 64 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$169.00M	USD	1 Quarter
Net income	`ProfitLoss`	$172.00M	USD	1 Quarter
Net income	`ProfitLoss`	$550.00M	USD	3 Qtrs
Net income	`ProfitLoss`	$464.00M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$652.00M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$206.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$193.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$689.00M	USD	3 Qtrs
Deferred income taxes and investment tax credit	`DeferredIncomeTaxesAndTaxCredits`	$198.00M	USD	3 Qtrs
Deferred income taxes and investment tax credit	`DeferredIncomeTaxesAndTaxCredits`	$90.00M	USD	3 Qtrs
Other non-cash operating activities and reconciling adjustments	`OtherNoncashIncomeExpense`	$-47.00M	USD	3 Qtrs
Other non-cash operating activities and reconciling adjustments	`OtherNoncashIncomeExpense`	$-78.00M	USD	3 Qtrs
Accounts and notes receivable and accrued revenue	`IncreaseDecreaseInAccountsAndOtherReceivables`	$-185.00M	USD	3 Qtrs
Accounts and notes receivable and accrued revenue	`IncreaseDecreaseInAccountsAndOtherReceivables`	$-299.00M	USD	3 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$161.00M	USD	3 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$76.00M	USD	3 Qtrs
Accounts payable and accrued refunds	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-46.00M	USD	3 Qtrs
Accounts payable and accrued refunds	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-6.00M	USD	3 Qtrs
Other current and non-current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$211.00M	USD	3 Qtrs
Other current and non-current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-12.00M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.56B	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.20B	USD	3 Qtrs
Capital expenditures (excludes assets placed under capital lease)	`PaymentsToAcquirePropertyPlantAndEquipment`	$1.21B	USD	3 Qtrs
Capital expenditures (excludes assets placed under capital lease)	`PaymentsToAcquirePropertyPlantAndEquipment`	$1.57B	USD	3 Qtrs
Increase in EnerBank notes receivable	`PaymentsToAcquireLoansReceivable`	$200.00M	USD	3 Qtrs
Increase in EnerBank notes receivable	`PaymentsToAcquireLoansReceivable`	$87.00M	USD	3 Qtrs
Purchase of notes receivable by EnerBank	`PaymentsToAcquireNotesReceivable`	$87.00M	USD	3 Qtrs
Purchase of notes receivable by EnerBank	`PaymentsToAcquireNotesReceivable`	-	USD	3 Qtrs
Proceeds from DB SERP investments	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	$146.00M	USD	3 Qtrs
Proceeds from DB SERP investments	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	-	USD	3 Qtrs
Proceeds from the sale of EnerBank notes receivable	`ProceedsFromSaleOfNotesReceivable`	$19.00M	USD	3 Qtrs
Proceeds from the sale of EnerBank notes receivable	`ProceedsFromSaleOfNotesReceivable`	-	USD	3 Qtrs
Cost to retire property and other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$78.00M	USD	3 Qtrs
Cost to retire property and other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$102.00M	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.81B	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.35B	USD	3 Qtrs
Proceeds from issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	$1.11B	USD	3 Qtrs
Proceeds from issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	$1.04B	USD	3 Qtrs
Retirement of debt	`RepaymentsOfLongTermDebt`	$705.00M	USD	3 Qtrs
Retirement of debt	`RepaymentsOfLongTermDebt`	$668.00M	USD	3 Qtrs
Increase in EnerBank certificates of deposit	`ProceedsFromNotesPayable`	$288.00M	USD	3 Qtrs
Increase in EnerBank certificates of deposit	`ProceedsFromNotesPayable`	$40.00M	USD	3 Qtrs
Increase (decrease) in notes payable	`ProceedsFromShortTermDebt`	$110.00M	USD	3 Qtrs
Increase (decrease) in notes payable	`RepaymentsOfShortTermDebt`	$168.00M	USD	3 Qtrs
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$39.00M	USD	3 Qtrs
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$80.00M	USD	3 Qtrs
Payment of dividends on common and preferred stock	`PaymentsOfOrdinaryDividends`	$305.00M	USD	3 Qtrs
Payment of dividends on common and preferred stock	`PaymentsOfOrdinaryDividends`	$282.00M	USD	3 Qtrs
Payment of capital lease obligations and other financing costs	`ProceedsFromPaymentsForOtherFinancingActivities`	$-59.00M	USD	3 Qtrs
Payment of capital lease obligations and other financing costs	`ProceedsFromPaymentsForOtherFinancingActivities`	$-39.00M	USD	3 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$71.00M	USD	3 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$412.00M	USD	3 Qtrs
Net Increase (Decrease) in Cash and Cash Equivalents, Including Restricted Amounts	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$162.00M	USD	3 Qtrs
Net Increase (Decrease) in Cash and Cash Equivalents, Including Restricted Amounts	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$-84.00M	USD	3 Qtrs
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$173.00M	USD	Point-in-time
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$257.00M	USD	Point-in-time
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$204.00M	USD	Point-in-time
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$366.00M	USD	Point-in-time
Cash and Cash Equivalents, Including Restricted Amounts, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$173.00M	USD	Point-in-time
Cash and Cash Equivalents, Including Restricted Amounts, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$257.00M	USD	Point-in-time
Cash and Cash Equivalents, Including Restricted Amounts, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$204.00M	USD	Point-in-time
Cash and Cash Equivalents, Including Restricted Amounts, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$366.00M	USD	Point-in-time
Capital expenditures not paid	`CapitalExpendituresIncurredButNotYetPaid`	$159.00M	USD	3 Qtrs
Capital expenditures not paid	`CapitalExpendituresIncurredButNotYetPaid`	$153.00M	USD	3 Qtrs

Stockholders Equity 34 line items

Line Item	Tag	Value	Unit	Period
Total Equity at Beginning of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.57B	USD	Point-in-time
Total Equity at Beginning of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.48B	USD	Point-in-time
Total Equity at Beginning of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.71B	USD	Point-in-time
Total Equity at Beginning of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.29B	USD	Point-in-time
Total Equity at Beginning of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.49B	USD	Point-in-time
Total Equity at Beginning of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.79B	USD	Point-in-time
Common stock issued	`StockIssuedDuringPeriodValueNewIssues`	$29.00M	USD	Point-in-time
Common stock issued	`StockIssuedDuringPeriodValueNewIssues`	$70.00M	USD	Point-in-time
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.00M	USD	3 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-3.00M	USD	3 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	-	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.00M	USD	1 Quarter
Amortization of prior service credit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	-	USD	3 Qtrs
Amortization of prior service credit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	-	USD	1 Quarter
Amortization of prior service credit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-1.00M	USD	3 Qtrs
Amortization of prior service credit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	-	USD	1 Quarter
Unrealized gain (loss) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$2.00M	USD	3 Qtrs
Unrealized gain (loss) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$1.00M	USD	1 Quarter
Unrealized gain (loss) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Unrealized gain (loss) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.00M	USD	3 Qtrs
Reclassification adjustments included in net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	-	USD	3 Qtrs
Reclassification adjustments included in net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-1.00M	USD	1 Quarter
Reclassification adjustments included in net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	-	USD	1 Quarter
Reclassification adjustments included in net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-1.00M	USD	3 Qtrs
Net income	`ProfitLoss`	$169.00M	USD	1 Quarter
Net income	`ProfitLoss`	$172.00M	USD	1 Quarter
Net income	`ProfitLoss`	$550.00M	USD	3 Qtrs
Net income	`ProfitLoss`	$464.00M	USD	3 Qtrs
Total Equity at End of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.57B	USD	Point-in-time
Total Equity at End of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.48B	USD	Point-in-time
Total Equity at End of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.71B	USD	Point-in-time
Total Equity at End of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.29B	USD	Point-in-time
Total Equity at End of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.49B	USD	Point-in-time
Total Equity at End of Period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.79B	USD	Point-in-time

Comprehensive Income 52 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$169.00M	USD	1 Quarter
Net income	`ProfitLoss`	$172.00M	USD	1 Quarter
Amortization of net actuarial loss TAX	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	-	USD	3 Qtrs
Amortization of net actuarial loss TAX	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	$1.00M	USD	1 Quarter
Amortization of net actuarial loss TAX	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	-	USD	1 Quarter
Net income	`ProfitLoss`	$550.00M	USD	3 Qtrs
Net income	`ProfitLoss`	$464.00M	USD	3 Qtrs
Amortization of net actuarial loss TAX	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	$1.00M	USD	3 Qtrs
Amortization of prior service credit TAX	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	-	USD	1 Quarter
Amortization of prior service credit TAX	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	-	USD	1 Quarter
Amortization of prior service credit TAX	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	-	USD	3 Qtrs
Amortization of prior service credit TAX	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	-	USD	3 Qtrs
Amortization of net actuarial loss, net of tax of $- for all periods	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.00M	USD	3 Qtrs
Unrealized gain (loss) on investments TAX	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	-	USD	1 Quarter
Amortization of net actuarial loss, net of tax of $- for all periods	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-3.00M	USD	3 Qtrs
Unrealized gain (loss) on investments TAX	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	-	USD	3 Qtrs
Amortization of net actuarial loss, net of tax of $- for all periods	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	-	USD	1 Quarter
Amortization of net actuarial loss, net of tax of $- for all periods	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.00M	USD	1 Quarter
Unrealized gain (loss) on investments TAX	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$1.00M	USD	3 Qtrs
Unrealized gain (loss) on investments TAX	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	-	USD	1 Quarter
Reclassification adjustments included in net income TAX	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	-	USD	3 Qtrs
Reclassification adjustments included in net income TAX	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	-	USD	1 Quarter
Reclassification adjustments included in net income TAX	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	-	USD	1 Quarter
Reclassification adjustments included in net income TAX	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	-	USD	3 Qtrs
Amortization of prior service credit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	-	USD	3 Qtrs
Amortization of prior service credit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	-	USD	1 Quarter
Amortization of prior service credit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-1.00M	USD	3 Qtrs
Amortization of prior service credit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	-	USD	1 Quarter
Unrealized gain (loss) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$2.00M	USD	3 Qtrs
Unrealized gain (loss) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$1.00M	USD	1 Quarter
Unrealized gain (loss) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Unrealized gain (loss) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.00M	USD	3 Qtrs
Reclassification adjustments included in net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	-	USD	3 Qtrs
Reclassification adjustments included in net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-1.00M	USD	1 Quarter
Reclassification adjustments included in net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	-	USD	1 Quarter
Reclassification adjustments included in net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-1.00M	USD	3 Qtrs
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$2.00M	USD	1 Quarter
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$2.00M	USD	3 Qtrs
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$1.00M	USD	1 Quarter
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$3.00M	USD	3 Qtrs
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$467.00M	USD	3 Qtrs
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$552.00M	USD	3 Qtrs
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$173.00M	USD	1 Quarter
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$171.00M	USD	1 Quarter
Comprehensive Income Attributable to Noncontrolling Interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.00M	USD	3 Qtrs
Comprehensive Income Attributable to Noncontrolling Interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Comprehensive Income Attributable to Noncontrolling Interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Comprehensive Income Attributable to Noncontrolling Interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.00M	USD	3 Qtrs
Comprehensive Income Attributable to CMS Energy	`ComprehensiveIncomeNetOfTax`	$466.00M	USD	3 Qtrs
Comprehensive Income Attributable to CMS Energy	`ComprehensiveIncomeNetOfTax`	$173.00M	USD	1 Quarter
Comprehensive Income Attributable to CMS Energy	`ComprehensiveIncomeNetOfTax`	$171.00M	USD	1 Quarter
Comprehensive Income Attributable to CMS Energy	`ComprehensiveIncomeNetOfTax`	$551.00M	USD	3 Qtrs

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.