$DTE
DTE ENERGY CO Stock $dte

$dte Overview Financials Valuation SEC Filings Company Website

2018 Q3 Form 10-Q Financial Statement

#000093634018000233 Filed on October 24, 2018

Income Statement

Concept	2018 Q3	2017 Q3
Revenue	$3.550B	$3.245B
YoY Change	9.4%	10.83%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$273.0M	$258.0M
YoY Change	5.81%	12.17%
% of Gross Profit
Operating Expenses	$3.117B	$2.795B
YoY Change	11.52%	18.33%
Operating Profit	$429.0M	$434.0M
YoY Change	-1.15%	-14.4%
Interest Expense	$142.0M	$146.0M
YoY Change	-2.74%	28.07%
% of Operating Profit	33.1%	33.64%
Other Income/Expense, Net	-$60.00M	-$97.00M
YoY Change	-38.14%	34.72%
Pretax Income	$369.0M	$337.0M
YoY Change	9.5%	-22.53%
Income Tax	$34.00M	$74.00M
% Of Pretax Income	9.21%	21.96%
Net Earnings	$334.0M	$270.0M
YoY Change	23.7%	-20.12%
Net Earnings / Revenue	9.41%	8.32%
Basic Earnings Per Share	$1.84	$1.51
Diluted Earnings Per Share	$1.84	$1.51
COMMON SHARES
Basic Shares Outstanding	182.0M shares	179.0M shares
Diluted Shares Outstanding	182.0M shares	179.0M shares

Balance Sheet

Concept	2018 Q3	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$84.00M	$63.00M
YoY Change	33.33%	-4.55%
Cash & Equivalents	$84.00M	$63.00M
Short-Term Investments
Other Short-Term Assets	$272.0M	$270.0M
YoY Change	0.74%	112.6%
Inventory	$767.0M	$816.0M
Prepaid Expenses
Receivables	$1.690B	$1.395B
Other Receivables	$83.00M	$166.0M
Total Short-Term Assets	$3.103B	$2.815B
YoY Change	10.23%	8.48%
LONG-TERM ASSETS
Property, Plant & Equipment	$21.61B	$20.31B
YoY Change	6.43%	9.47%
Goodwill	$2.293B	$2.293B
YoY Change	0.0%	13.63%
Intangibles
YoY Change
Long-Term Investments	$1.670B	$971.0M
YoY Change	71.99%	37.54%
Other Assets	$152.0M	$175.0M
YoY Change	-13.14%	0.0%
Total Long-Term Assets	$7.141B	$7.315B
YoY Change	-2.38%	20.1%
TOTAL ASSETS
Total Short-Term Assets	$3.103B	$2.815B
Total Long-Term Assets	$7.141B	$7.315B
Total Assets	$35.29B	$33.07B
YoY Change	6.72%	12.25%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.160B	$994.0M
YoY Change	16.7%	22.26%
Accrued Expenses	$143.0M	$131.0M
YoY Change	9.16%	13.91%
Deferred Revenue
YoY Change
Short-Term Debt	$77.00M	$659.0M
YoY Change	-88.32%	60.73%
Long-Term Debt Due	$1.000M	$109.0M
YoY Change	-99.08%	626.67%
Total Short-Term Liabilities	$2.117B	$2.598B
YoY Change	-18.51%	31.95%
LONG-TERM LIABILITIES
Long-Term Debt	$12.48B	$11.04B
YoY Change	13.02%	27.0%
Other Long-Term Liabilities	$285.0M	$325.0M
YoY Change	-12.31%	33.74%
Total Long-Term Liabilities	$8.865B	$8.825B
YoY Change	0.45%	-0.46%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.117B	$2.598B
Total Long-Term Liabilities	$8.865B	$8.825B
Total Liabilities	$10.98B	$11.42B
YoY Change	-3.86%	5.43%
SHAREHOLDERS EQUITY
Retained Earnings	$6.093B	$5.515B
YoY Change	10.48%	7.48%
Common Stock	$4.232B	$3.978B
YoY Change	6.39%	-3.84%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$10.21B	$9.373B
YoY Change
Total Liabilities & Shareholders Equity	$35.29B	$33.07B
YoY Change	6.72%	12.25%

Cashflow Statement

Concept	2018 Q3	2017 Q3
OPERATING ACTIVITIES
Net Income	$334.0M	$270.0M
YoY Change	23.7%	-20.12%
Depreciation, Depletion And Amortization	$273.0M	$258.0M
YoY Change	5.81%	12.17%
Cash From Operating Activities	$614.0M	$367.0M
YoY Change	67.3%	-25.25%
INVESTING ACTIVITIES
Capital Expenditures	-$622.0M	-$536.0M
YoY Change	16.04%	11.43%
Acquisitions
YoY Change
Other Investing Activities	-$334.0M	-$18.00M
YoY Change	1755.56%	-78.57%
Cash From Investing Activities	-$956.0M	-$554.0M
YoY Change	72.56%	-1.95%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	360.0M	189.0M
YoY Change	90.48%	75.0%
NET CHANGE
Cash From Operating Activities	614.0M	367.0M
Cash From Investing Activities	-956.0M	-554.0M
Cash From Financing Activities	360.0M	189.0M
Net Change In Cash	18.00M	2.000M
YoY Change	800.0%	-94.12%
FREE CASH FLOW
Cash From Operating Activities	$614.0M	$367.0M
Capital Expenditures	-$622.0M	-$536.0M
Free Cash Flow	$1.236B	$903.0M
YoY Change	36.88%	-7.1%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dte	Equity Securities Fvni Gain EquitySecuritiesFVNIGain	4000000	USD
CY2018Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	181925024	shares
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	DTE ENERGY CO
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
	dei	Document Period End Date DocumentPeriodEndDate	2018-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0000936340
	dei	Entity Small Business EntitySmallBusiness	false
CY2017Q4	dte	Cash Collateral Posted Net Of Cash Collateral Received CashCollateralPostedNetOfCashCollateralReceived	28000000	USD
CY2018Q3	dte	Cash Collateral Posted Net Of Cash Collateral Received CashCollateralPostedNetOfCashCollateralReceived	13000000	USD
CY2017Q4	dte	Cashcollateralpaidnotrelatedtounrealizedderivativepositions Cashcollateralpaidnotrelatedtounrealizedderivativepositions	18000000	USD
CY2018Q3	dte	Cashcollateralpaidnotrelatedtounrealizedderivativepositions Cashcollateralpaidnotrelatedtounrealizedderivativepositions	21000000	USD
CY2017Q4	dte	Cashcollateralreceivednotrelatedtounrealizedderivativepositions Cashcollateralreceivednotrelatedtounrealizedderivativepositions	3000000	USD
CY2018Q3	dte	Cashcollateralreceivednotrelatedtounrealizedderivativepositions Cashcollateralreceivednotrelatedtounrealizedderivativepositions	7000000	USD
	dte	Contract With Customer Liability Increase From Cash Receipts ContractWithCustomerLiabilityIncreaseFromCashReceipts	37000000	USD
CY2018Q3	dte	Derivative Net Asset Position Aggregate Fair Value DerivativeNetAssetPositionAggregateFairValue	295000000	USD
CY2017Q3	dte	Equity Securities Fvni Gain EquitySecuritiesFVNIGain	6000000	USD
	dte	Equity Securities Fvni Gain EquitySecuritiesFVNIGain	19000000	USD
CY2018Q3	dte	Estimated Capital Expendituresand Contributions To Equity Method Investees EstimatedCapitalExpendituresandContributionsToEquityMethodInvestees	3600000000	USD
	dte	Nuclearfuelamortization Nuclearfuelamortization	39000000	USD
CY2018Q3	dte	Equity Securities Fvni Gain EquitySecuritiesFVNIGain	5000000	USD
	dte	Gain Losson Saleof Assetsand Asset Impairment Chargesnet GainLossonSaleofAssetsandAssetImpairmentChargesnet	-5000000	USD
	dte	Gain Losson Saleof Assetsand Asset Impairment Chargesnet GainLossonSaleofAssetsandAssetImpairmentChargesnet	-11000000	USD
CY2017Q3	dte	Incomefrom Re Finvestees IncomefromREFinvestees	20000000	USD
	dte	Incomefrom Re Finvestees IncomefromREFinvestees	60000000	USD
CY2018Q3	dte	Incomefrom Re Finvestees IncomefromREFinvestees	27000000	USD
	dte	Incomefrom Re Finvestees IncomefromREFinvestees	75000000	USD
CY2017Q3	dte	Incomeon Contract Services IncomeonContractServices	9000000	USD
	dte	Incomeon Contract Services IncomeonContractServices	17000000	USD
CY2018Q3	dte	Incomeon Contract Services IncomeonContractServices	11000000	USD
	dte	Incomeon Contract Services IncomeonContractServices	43000000	USD
CY2018Q3	dte	Increase Decreasein Effective Tax Ratefrom Prior Year Percent IncreaseDecreaseinEffectiveTaxRatefromPriorYearPercent	-0.13
	dte	Increase Decreasein Effective Tax Ratefrom Prior Year Percent IncreaseDecreaseinEffectiveTaxRatefromPriorYearPercent	-0.10
	dte	Increase Decreasein Prepaid Postretirement Costs IncreaseDecreaseinPrepaidPostretirementCosts	0	USD
	dte	Increase Decreasein Prepaid Postretirement Costs IncreaseDecreaseinPrepaidPostretirementCosts	45000000	USD
CY2017Q4	dte	Lettersof Credit Received Usedto Offset Net Derivative Assets LettersofCreditReceivedUsedtoOffsetNetDerivativeAssets	4000000	USD
CY2018Q3	dte	Lettersof Credit Received Usedto Offset Net Derivative Assets LettersofCreditReceivedUsedtoOffsetNetDerivativeAssets	6000000	USD
CY2017Q4	dte	Lettersofcreditthatcouldbeusedtooffsetnetderivativeliabilities Lettersofcreditthatcouldbeusedtooffsetnetderivativeliabilities	4000000	USD
CY2018Q3	dte	Lettersofcreditthatcouldbeusedtooffsetnetderivativeliabilities Lettersofcreditthatcouldbeusedtooffsetnetderivativeliabilities	4000000	USD
CY2018Q2	dte	Loss Contingency Case Stayed Period LossContingencyCaseStayedPeriod	P180D
	dte	Nuclearfuelamortization Nuclearfuelamortization	39000000	USD
CY2017Q3	dte	Numberof Dividend Declarations NumberofDividendDeclarations	0	declaration
CY2018Q3	dte	Numberof Electric Utility Customers NumberofElectricUtilityCustomers	2200000	customer
CY2018Q3	dte	Numberof Gas Utility Customers NumberofGasUtilityCustomers	1300000	customer
CY2017Q3	dte	Other Miscellaneous Nonoperating Income OtherMiscellaneousNonoperatingIncome	8000000	USD
	dte	Other Miscellaneous Nonoperating Income OtherMiscellaneousNonoperatingIncome	14000000	USD
CY2018Q3	dte	Other Miscellaneous Nonoperating Income OtherMiscellaneousNonoperatingIncome	3000000	USD
	dte	Other Miscellaneous Nonoperating Income OtherMiscellaneousNonoperatingIncome	19000000	USD
	dte	Plant And Equipment Expenditures Non Utility PlantAndEquipmentExpendituresNonUtility	133000000	USD
	dte	Plant And Equipment Expenditures Non Utility PlantAndEquipmentExpendituresNonUtility	217000000	USD
	dte	Plant And Equipment Expenditures Utility PlantAndEquipmentExpendituresUtility	1439000000	USD
	dte	Plant And Equipment Expenditures Utility PlantAndEquipmentExpendituresUtility	1562000000	USD
CY2017Q4	dte	Prepaid Postretirement Costs PrepaidPostretirementCosts	0	USD
CY2018Q3	dte	Prepaid Postretirement Costs PrepaidPostretirementCosts	45000000	USD
CY2017Q3	dte	Regulatedand Unregulated Operating Expense Depreciationand Amortization RegulatedandUnregulatedOperatingExpenseDepreciationandAmortization	258000000	USD
	dte	Regulatedand Unregulated Operating Expense Depreciationand Amortization RegulatedandUnregulatedOperatingExpenseDepreciationandAmortization	756000000	USD
CY2018Q3	dte	Regulatedand Unregulated Operating Expense Depreciationand Amortization RegulatedandUnregulatedOperatingExpenseDepreciationandAmortization	273000000	USD
	dte	Regulatedand Unregulated Operating Expense Depreciationand Amortization RegulatedandUnregulatedOperatingExpenseDepreciationandAmortization	826000000	USD
CY2017Q3	dte	Regulatedand Unregulated Operating Expense Maintenanceand Operations RegulatedandUnregulatedOperatingExpenseMaintenanceandOperations	550000000	USD
	dte	Regulatedand Unregulated Operating Expense Maintenanceand Operations RegulatedandUnregulatedOperatingExpenseMaintenanceandOperations	1676000000	USD
CY2018Q3	dte	Regulatedand Unregulated Operating Expense Maintenanceand Operations RegulatedandUnregulatedOperatingExpenseMaintenanceandOperations	604000000	USD
	dte	Regulatedand Unregulated Operating Expense Maintenanceand Operations RegulatedandUnregulatedOperatingExpenseMaintenanceandOperations	1721000000	USD
CY2018Q3	dte	Remainingamountofoffsetstoderivativenetliabilitypositionsforhardandsofttriggerprovisions Remainingamountofoffsetstoderivativenetliabilitypositionsforhardandsofttriggerprovisions	67000000	USD
	dte	Tax Cuts And Jobs Act Measurement Period Adjustment Income Tax Expense Benefit TaxCutsAndJobsActMeasurementPeriodAdjustmentIncomeTaxExpenseBenefit	21000000	USD
CY2018Q3	dte	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense	20000000	USD
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CY2018Q3	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	0	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	66000000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	84000000	USD
CY2017Q3	dte	Unregulated Operating Expense Productsand Services UnregulatedOperatingExpenseProductsandServices	1469000000	USD
	dte	Unregulated Operating Expense Productsand Services UnregulatedOperatingExpenseProductsandServices	3897000000	USD
CY2018Q3	dte	Unregulated Operating Expense Productsand Services UnregulatedOperatingExpenseProductsandServices	1682000000	USD
	dte	Unregulated Operating Expense Productsand Services UnregulatedOperatingExpenseProductsandServices	4898000000	USD
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1171000000	USD
CY2018Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	1160000000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1758000000	USD
CY2018Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1690000000	USD
CY2017Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	122000000	USD
CY2018Q3	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	140000000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	10703000000	USD
CY2018Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	10988000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-120000000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-118000000	USD
CY2018Q3	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	502000000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	49000000	USD
CY2018Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	75000000	USD
CY2018Q3	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	39000000	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	95000000	USD
CY2017Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6200000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6400000	shares
CY2018Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6200000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6400000	shares
CY2017Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	2320000000	USD
CY2018Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	2428000000	USD
CY2017Q4	us-gaap	Assets Assets	33767000000	USD
CY2018Q3	us-gaap	Assets Assets	35292000000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	3081000000	USD
CY2018Q3	us-gaap	Assets Current AssetsCurrent	3103000000	USD
CY2017Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	7168000000	USD
CY2018Q3	us-gaap	Assets Noncurrent AssetsNoncurrent	7141000000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	222000000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	275000000	USD
CY2017Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	1000000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	113000000	USD
CY2017Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	86000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	89000000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	104000000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-27000000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	15000000	USD
CY2018Q3	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	1000000	USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.48
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.65
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2018Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	179386967	shares
CY2018Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	181925024	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	179386967	shares
CY2018Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	181925024	shares
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	3989000000	USD
CY2018Q3	us-gaap	Common Stock Value CommonStockValue	4232000000	USD
CY2017Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	275000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	860000000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	337000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	936000000	USD
CY2017Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-7000000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-15000000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1000000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-7000000	USD
CY2017Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	268000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	845000000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	338000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	929000000	USD
CY2017Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	56000000	USD
CY2018Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	63000000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	30000000	USD
CY2017Q3	us-gaap	Costs And Expenses CostsAndExpenses	2811000000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	7997000000	USD
CY2018Q3	us-gaap	Costs And Expenses CostsAndExpenses	3121000000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	9200000000	USD
CY2017Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0	USD
CY2018Q3	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	1445000000	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	2000000	USD
CY2017Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	1492000000	USD
CY2018Q3	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	1525000000	USD
CY2017Q4	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	220000000	USD
CY2018Q3	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	224000000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	1888000000	USD
CY2018Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	1974000000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	261000000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	118000000	USD
CY2017Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	924000000	USD
CY2018Q3	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	719000000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	756000000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	826000000	USD
CY2017Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	9000000	USD
CY2018Q3	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	1000000	USD
CY2017Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	498000000	USD
CY2018Q3	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	314000000	USD
CY2017Q4	us-gaap	Derivative Assets DerivativeAssets	154000000	USD
CY2018Q3	us-gaap	Derivative Assets DerivativeAssets	128000000	USD
CY2017Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	103000000	USD
CY2018Q3	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	97000000	USD
CY2017Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	51000000	USD
CY2018Q3	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	31000000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	652000000	USD
CY2018Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	442000000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	657000000	USD
CY2018Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	458000000	USD
CY2017Q3	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	29000000	USD
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	156000000	USD
CY2018Q3	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-11000000	USD
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-85000000	USD
CY2017Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	146000000	USD
CY2018Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	145000000	USD
CY2017Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	99000000	USD
CY2018Q3	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	79000000	USD
CY2017Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	47000000	USD
CY2018Q3	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	66000000	USD
CY2017Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	22000000	USD
CY2018Q3	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	USD
CY2017Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	511000000	USD
CY2018Q3	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	313000000	USD
CY2018Q3	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	363000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	481000000	USD
CY2017Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	158000000	USD
CY2018Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	161000000	USD
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.51
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.72
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.84
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CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.51
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.72
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.84
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.13
CY2017Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.22
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.22
CY2018Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.09
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.12
CY2018Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	86000000	USD
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y3M15D
CY2017Q4	us-gaap	Energy Related Inventory EnergyRelatedInventory	399000000	USD
CY2018Q3	us-gaap	Energy Related Inventory EnergyRelatedInventory	390000000	USD
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	55000000	USD
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	48000000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1073000000	USD
CY2018Q3	us-gaap	Equity Method Investments EquityMethodInvestments	1670000000	USD
CY2017Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	6000000	USD
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	19000000	USD
CY2018Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	5000000	USD
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	6000000	USD
	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	105000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	867000000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	864000000	USD
CY2017Q3	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-6000000	USD
	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-9000000	USD
CY2018Q3	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-10000000	USD
	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-8000000	USD
	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	133000000	USD
	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	-24000000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	41000000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-11000000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	198000000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	2293000000	USD
CY2018Q3	us-gaap	Goodwill Goodwill	2293000000	USD
CY2017Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	337000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1073000000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	369000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1043000000	USD
CY2017Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	26000000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	77000000	USD
CY2018Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	46000000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	99000000	USD
CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	74000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	241000000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	34000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	121000000	USD
	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-43000000	USD
	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-85000000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	25000000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	9000000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-101000000	USD
	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-230000000	USD
	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-205000000	USD
	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	-30000000	USD
	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	-61000000	USD
	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-260000000	USD
	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-283000000	USD
CY2017Q3	us-gaap	Interest Expense InterestExpense	146000000	USD
	us-gaap	Interest Expense InterestExpense	404000000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	142000000	USD
	us-gaap	Interest Expense InterestExpense	412000000	USD
CY2017Q4	us-gaap	Interest Payable Current InterestPayableCurrent	111000000	USD
CY2018Q3	us-gaap	Interest Payable Current InterestPayableCurrent	143000000	USD
CY2017Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	380000000	USD
CY2018Q3	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	377000000	USD
CY2017Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	4000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	9000000	USD
CY2018Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	3000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	9000000	USD
CY2017Q4	us-gaap	Junior Subordinated Long Term Notes JuniorSubordinatedLongTermNotes	1145000000	USD
CY2018Q3	us-gaap	Junior Subordinated Long Term Notes JuniorSubordinatedLongTermNotes	1145000000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	33767000000	USD
CY2018Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	35292000000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2812000000	USD
CY2018Q3	us-gaap	Liabilities Current LiabilitiesCurrent	2117000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1802000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2336000000	USD
CY2017Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	8780000000	USD
CY2018Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	8865000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1550000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2047000000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	270000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	847000000	USD
CY2018Q3	us-gaap	Line Of Credit LineOfCredit	236000000	USD
CY2018Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	2120000000	USD
CY2018Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1884000000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	12185000000	USD
CY2018Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	13620000000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	109000000	USD
CY2018Q3	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1000000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	11039000000	USD
CY2018Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	12475000000	USD
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	2797000000	USD
CY2018Q3	us-gaap	Long Term Investments LongTermInvestments	3436000000	USD
CY2017Q4	us-gaap	Minority Interest MinorityInterest	478000000	USD
CY2018Q3	us-gaap	Minority Interest MinorityInterest	483000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	225000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	304000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	334000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	929000000	USD
CY2017Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-7000000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-15000000	USD
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	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-7000000	USD
CY2017Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	269000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	845000000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	333000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	927000000	USD
CY2017Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	269000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	845000000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	333000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	927000000	USD
CY2017Q3	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	16000000	USD
	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	49000000	USD
CY2018Q3	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	9000000	USD
	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	27000000	USD
CY2017Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-97000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-266000000	USD
CY2018Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-60000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-219000000	USD
CY2017Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	73000000	USD
CY2018Q3	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	67000000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	434000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	1339000000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	429000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	1262000000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	199000000	USD
CY2018Q3	us-gaap	Other Assets Current OtherAssetsCurrent	272000000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	161000000	USD
CY2018Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	152000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	2000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	2000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	0	USD
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CY2017Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	13000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-10000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-2000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-7000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-2000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-6000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-2000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
CY2017Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2017Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2017Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	525000000	USD
CY2018Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	462000000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	323000000	USD
CY2018Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	285000000	USD
CY2017Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	232000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	61000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	20000000	USD
CY2018Q3	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	83000000	USD
CY2017Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	1000000	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	2000000	USD
CY2018Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	1000000	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	2000000	USD
CY2017Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	1000000	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	2000000	USD
CY2018Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	1000000	USD
CY2018Q3	us-gaap	Other Long Term Investments OtherLongTermInvestments	241000000	USD
CY2017Q3	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	13000000	USD
	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	26000000	USD
CY2018Q3	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	11000000	USD
	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	51000000	USD
CY2017Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	74000000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	204000000	USD
CY2018Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	99000000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	262000000	USD
CY2017Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	61000000	USD
CY2018Q3	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	0	USD
CY2017Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	98000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	51000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	444000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	459000000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	194000000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	545000000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	936000000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	810000000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	29000000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	31000000	USD
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	10000000	USD
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	8000000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	7000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1010000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1433000000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	34000000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	43000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-70000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-40000000	USD
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	951000000	USD
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	810000000	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	160000000	USD
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2017Q3	us-gaap	Profit Loss ProfitLoss	263000000	USD
	us-gaap	Profit Loss ProfitLoss	832000000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	335000000	USD
	us-gaap	Profit Loss ProfitLoss	922000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	31424000000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	32600000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20721000000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	21612000000	USD
CY2017Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	5000000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	17000000	USD
CY2018Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	7000000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	20000000	USD
CY2017Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	3245000000	USD
	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	9336000000	USD
CY2018Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	3550000000	USD
	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	10462000000	USD
CY2017Q3	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	1573000000	USD
	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	4714000000	USD
CY2018Q3	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	1669000000	USD
	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	4923000000	USD
CY2017Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	55000000	USD
CY2018Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	90000000	USD
CY2017Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3723000000	USD
CY2018Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3689000000	USD
CY2017Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	18000000	USD
CY2018Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	34000000	USD
CY2017Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2875000000	USD
CY2018Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	3029000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	385000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	105000000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	544000000	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	23000000	USD
CY2018Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	20000000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5643000000	USD
CY2018Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	6093000000	USD
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	8000000	USD
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	27000000	USD
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1000000	USD
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	5000000	USD
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	7000000	USD
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	15000000	USD
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	63000000	USD
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2018Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
CY2017Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	621000000	USD
CY2018Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	77000000	USD
	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	175000000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	26000000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	9512000000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	10207000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9990000000	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10690000000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	-51000000	USD
CY2017Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	91000000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	297000000	USD
CY2018Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	99000000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	307000000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8000000	USD
CY2017Q3	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	1672000000	USD
	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	4622000000	USD
CY2018Q3	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	1881000000	USD
	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	5539000000	USD
CY2017Q3	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	437000000	USD
	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	1362000000	USD
CY2018Q3	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	453000000	USD
	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	1440000000	USD
CY2018Q3	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	0	USD
CY2017Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	179000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	179000000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	182000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	181000000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	179000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	179000000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	182000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	181000000	shares
	us-gaap	Derivatives Methods Of Accounting Nonhedging Derivatives DerivativesMethodsOfAccountingNonhedgingDerivatives	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:left;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Revenues and energy costs related to trading contracts are presented on a net basis in DTE Energy's Consolidated Statements of Operations. Commodity derivatives used for trading purposes, and financial non-trading commodity derivatives, are accounted for using the MTM method with unrealized and realized gains and losses recorded in Operating Revenues — Non-utility operations. Non-trading physical commodity sale and purchase derivative contracts are generally accounted for using the MTM method with unrealized and realized gains and losses for sales recorded in Operating Revenues — Non-utility operations and purchases recorded in Fuel, purchased power, and gas — non-utility.</font></div></div>
	us-gaap	Derivatives Reporting Of Derivative Activity DerivativesReportingOfDerivativeActivity	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:left;text-indent:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Derivative Assets and Liabilities</font></div><div style="line-height:120%;padding-top:12px;text-align:left;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Derivative assets and liabilities are comprised of physical and financial derivative contracts, including futures, forwards, options, and swaps that are both exchange-traded and over-the-counter traded contracts. Various inputs are used to value derivatives depending on the type of contract and availability of market data. Exchange-traded derivative contracts are valued using quoted prices in active markets. The Registrants consider the following criteria in determining whether a market is considered active: frequency in which pricing information is updated, variability in pricing between sources or over time, and the availability of public information. Other derivative contracts are valued based upon a variety of inputs including commodity market prices, broker quotes, interest rates, credit ratings, default rates, market-based seasonality, and basis differential factors. The Registrants monitor the prices that are supplied by brokers and pricing services and may use a supplemental price source or change the primary price source of an index if prices become unavailable or another price source is determined to be more representative of fair value. The Registrants have obtained an understanding of how these prices are derived. Additionally, the Registrants selectively corroborate the fair value of their transactions by comparison of market-based price sources. Mathematical valuation models are used for derivatives for which external market data is not readily observable, such as contracts which extend beyond the actively traded reporting period. The Registrants have established a Risk Management Committee whose responsibilities include directly or indirectly ensuring all valuation methods are applied in accordance with predefined policies. The development and maintenance of the Registrants' forward price curves has been assigned to DTE Energy's Risk Management Department, which is separate and distinct from the trading functions within DTE Energy.</font></div></div>
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:left;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain prior year balances for DTE Energy were reclassified to match the current year's Consolidated Financial Statements presentation.</font></div></div>

Files In Submission

Name	View Source	Status
0000936340-18-000233-index-headers.html	Edgar Link	pending
0000936340-18-000233-index.html	Edgar Link	pending
0000936340-18-000233.txt	Edgar Link	pending
0000936340-18-000233-xbrl.zip	Edgar Link	pending
a20180930ex1287.htm	Edgar Link	pending
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dte-20180930.xml	Edgar Link	completed
dte-20180930.xsd	Edgar Link	pending
dte-20180930_cal.xml	Edgar Link	unprocessable
dte-20180930_def.xml	Edgar Link	unprocessable
dte-20180930_lab.xml	Edgar Link	unprocessable
dte-20180930_pre.xml	Edgar Link	unprocessable
dteenergy2018093010q.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$DTE
DTE ENERGY CO Stock $dte

2018 Q3 Form 10-Q Financial Statement

#000093634018000233 Filed on October 24, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DTE DTE ENERGY CO Stock $dte

2018 Q3 Form 10-Q Financial Statement

#000093634018000233 Filed on October 24, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DTE
DTE ENERGY CO Stock $dte