$DTE
DTE ENERGY CO Stock $dte

$dte Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000093634014000014 Filed on February 14, 2014

Income Statement

Concept	2012 Q4	2012 Q3	2012 Q2
Revenue	$2.349B	$2.190B	$2.013B
YoY Change	8.6%	-2.84%	-0.25%
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	$271.0M	$265.0M	$250.0M
YoY Change	11.52%	2.32%	0.81%
% of Gross Profit
Operating Expenses	$2.075B	$1.785B	$1.723B
YoY Change	14.26%	-3.36%	-1.15%
Operating Profit	$267.0M	$406.0M	$294.0M
YoY Change	-22.83%	2.01%	2.08%
Interest Expense	-$107.0M	$109.0M	$109.0M
YoY Change	-11.57%	-9.17%	-12.1%
% of Operating Profit	-40.07%	26.85%	37.07%
Other Income/Expense, Net	$14.00M	-$69.00M	-$76.00M
YoY Change	-30.0%	-38.94%	-32.14%
Pretax Income	$174.0M	$337.0M	$218.0M
YoY Change	-28.98%	17.83%	23.86%
Income Tax	$35.00M	$108.0M	$70.00M
% Of Pretax Income	20.11%	32.05%	32.11%
Net Earnings	$81.00M	$227.0M	$146.0M
YoY Change	-46.0%	24.04%	-27.72%
Net Earnings / Revenue	3.45%	10.37%	7.25%
Basic Earnings Per Share	$0.47	$1.32	$0.86
Diluted Earnings Per Share	$0.47	$1.31	$0.86
COMMON SHARES
Basic Shares Outstanding		172.0M shares	170.0M shares
Diluted Shares Outstanding		172.0M shares	171.0M shares

Balance Sheet

Concept	2012 Q4	2012 Q3	2012 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$65.00M	$59.00M	$185.0M
YoY Change	-4.41%	28.26%	203.28%
Cash & Equivalents	$65.00M	$59.00M	$185.0M
Short-Term Investments
Other Short-Term Assets	$215.0M	$244.0M	$162.0M
YoY Change	9.69%	-2.01%	-71.92%
Inventory	$761.0M	$785.0M	$710.0M
Prepaid Expenses
Receivables	$1.336B	$1.164B	$1.239B
Other Receivables	$126.0M	$71.00M	$164.0M
Total Short-Term Assets	$2.915B	$2.730B	$3.050B
YoY Change	-8.79%	-6.22%	10.07%
LONG-TERM ASSETS
Property, Plant & Equipment	$14.68B	$14.40B	$14.15B
YoY Change	6.82%	7.32%	6.53%
Goodwill	$2.018B	$2.020B	$2.020B
YoY Change	-0.1%	0.0%
Intangibles	$155.0M	$67.00M	$67.00M
YoY Change	112.33%	-9.46%
Long-Term Investments	$1.630B	$1.629B	$1.593B
YoY Change	6.12%	10.14%	2.77%
Other Assets	$197.0M	$190.0M	$189.0M
YoY Change	-1.01%	-1.04%	-96.03%
Total Long-Term Assets	$7.149B	$7.209B	$7.355B
YoY Change	-6.0%	2.59%	-66.27%
TOTAL ASSETS
Total Short-Term Assets	$2.915B	$2.730B	$3.050B
Total Long-Term Assets	$7.149B	$7.209B	$7.355B
Total Assets	$26.34B	$25.91B	$26.08B
YoY Change	1.27%	4.56%	6.09%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$848.0M	$724.0M	$728.0M
YoY Change	8.44%	2.26%	-0.68%
Accrued Expenses	$93.00M	$122.0M	$94.00M
YoY Change	-2.11%	0.83%	-6.93%
Deferred Revenue
YoY Change
Short-Term Debt	$240.0M	$98.00M	$39.00M
YoY Change	-42.72%	-64.36%	-74.17%
Long-Term Debt Due	$817.0M	$633.0M	$848.0M
YoY Change	55.32%	156.28%	160.12%
Total Short-Term Liabilities	$2.768B	$2.309B	$2.635B
YoY Change	5.33%	9.95%	17.32%
LONG-TERM LIABILITIES
Long-Term Debt	$6.220B	$6.526B	$6.528B
YoY Change	-2.89%	-2.63%	-13.04%
Other Long-Term Liabilities	$306.0M	$302.0M	$297.0M
YoY Change	-7.55%	17.05%	-94.1%
Total Long-Term Liabilities	$9.146B	$9.049B	$9.044B
YoY Change	0.05%	10.7%	-27.91%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.768B	$2.309B	$2.635B
Total Long-Term Liabilities	$9.146B	$9.049B	$9.044B
Total Liabilities	$11.91B	$11.36B	$11.68B
YoY Change	1.23%	10.55%	-34.37%
SHAREHOLDERS EQUITY
Retained Earnings	$3.944B	$3.969B	$3.744B
YoY Change	5.17%	7.33%
Common Stock	$3.587B	$3.567B	$3.549B
YoY Change	4.98%	4.36%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$7.373B	$7.389B	$7.142B
YoY Change
Total Liabilities & Shareholders Equity	$26.34B	$25.91B	$26.08B
YoY Change	1.27%	4.56%	6.09%

Cashflow Statement

Concept	2012 Q4	2012 Q3	2012 Q2
OPERATING ACTIVITIES
Net Income	$81.00M	$227.0M	$146.0M
YoY Change	-46.0%	24.04%	-27.72%
Depreciation, Depletion And Amortization	$271.0M	$265.0M	$250.0M
YoY Change	11.52%	2.32%	0.81%
Cash From Operating Activities	$480.0M	$568.0M	$541.0M
YoY Change	-8.05%	73.7%	23.8%
INVESTING ACTIVITIES
Capital Expenditures	-$598.0M	-$383.0M	-$447.0M
YoY Change	31.43%	23.55%	-0.45%
Acquisitions
YoY Change
Other Investing Activities	$13.00M	$31.00M	-$42.00M
YoY Change	-124.53%	24.0%	-43.24%
Cash From Investing Activities	-$585.0M	-$352.0M	-$489.0M
YoY Change	15.16%	23.51%	-6.5%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	111.0M	-342.0M	76.00M
YoY Change	1287.5%	500.0%	-252.0%
NET CHANGE
Cash From Operating Activities	480.0M	568.0M	541.0M
Cash From Investing Activities	-585.0M	-352.0M	-489.0M
Cash From Financing Activities	111.0M	-342.0M	76.00M
Net Change In Cash	6.000M	-126.0M	128.0M
YoY Change	-72.73%	740.0%	-194.12%
FREE CASH FLOW
Cash From Operating Activities	$480.0M	$568.0M	$541.0M
Capital Expenditures	-$598.0M	-$383.0M	-$447.0M
Free Cash Flow	$1.078B	$951.0M	$988.0M
YoY Change	10.34%	49.29%	11.51%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	962000000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	848000000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1336000000	USD
CY2013Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1542000000	USD
CY2013Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	47000000	USD
CY2012Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	56000000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	8947000000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	9323000000	USD
CY2012Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Cash And Equivalents BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents	22000000	USD
CY2012Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther	8000000	USD
CY2012Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Receivables BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables	14000000	USD
CY2012Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities	7000000	USD
CY2012Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangibles BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles	75000000	USD
CY2012Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	220000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-158000000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-136000000	USD
CY2013Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	249000000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	99000000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	66000000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	83000000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	62000000	USD
CY2013Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	55000000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	162000000	USD
CY2010Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	196000000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6000000	USD
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14000000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5000000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1827000000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1719000000	USD
CY2013	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	106000000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	5000000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	13000000	USD
CY2013	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	10000000	USD
CY2013	us-gaap	Asset Retirement Obligations Liability Not Recognized AssetRetirementObligationsLiabilityNotRecognized	Natural gas storage system assets, substations, manholes and certain other distribution assets have an indeterminate life. Therefore, no liability has been recorded for these assets.
CY2012Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	1719000000	USD
CY2013Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	1827000000	USD
CY2013Q4	us-gaap	Assets Assets	25935000000	USD
CY2012Q4	us-gaap	Assets Assets	26339000000	USD
CY2011Q4	us-gaap	Assets Assets	26009000000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	2806000000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	2915000000	USD
CY2012Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	7149000000	USD
CY2013Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	5535000000	USD
CY2012Q4	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	294000000	USD
CY2012Q4	us-gaap	Business Combination Consideration Transferred Other1 BusinessCombinationConsiderationTransferredOther1	74000000	USD
CY2012Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Noncurrent Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets	9000000	USD
CY2012Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	100000000	USD
CY2013	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	329000000	USD
CY2012	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	235000000	USD
CY2011	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	212000000	USD
CY2013Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	7000000	USD
CY2012Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	12000000	USD
CY2013Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	11000000	USD
CY2013Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	35000000	USD
CY2012Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	32000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	19000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	8000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	0	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	0	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	3000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	8000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	0	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	1000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	18000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Receivable CapitalLeasesFutureMinimumPaymentsReceivable	79000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Receivable Current CapitalLeasesFutureMinimumPaymentsReceivableCurrent	12000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Receivable Due Thereafter CapitalLeasesFutureMinimumPaymentsReceivableDueThereafter	19000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Five Years CapitalLeasesFutureMinimumPaymentsReceivableInFiveYears	12000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Four Years CapitalLeasesFutureMinimumPaymentsReceivableInFourYears	12000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Three Years CapitalLeasesFutureMinimumPaymentsReceivableInThreeYears	12000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Two Years CapitalLeasesFutureMinimumPaymentsReceivableInTwoYears	12000000	USD
CY2012Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	20000000	USD
CY2013Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	21000000	USD
CY2013Q4	us-gaap	Capital Leases Lessor Balance Sheet Net Investment In Direct Financing Leases Current CapitalLeasesLessorBalanceSheetNetInvestmentInDirectFinancingLeasesCurrent	5000000	USD
CY2013Q4	us-gaap	Capital Leases Lessor Balance Sheet Net Investment In Direct Financing Leases Noncurrent CapitalLeasesLessorBalanceSheetNetInvestmentInDirectFinancingLeasesNoncurrent	74000000	USD
CY2013Q4	us-gaap	Capital Leases Net Investment In Direct Financing Leases CapitalLeasesNetInvestmentInDirectFinancingLeases	79000000	USD
CY2013Q4	us-gaap	Capital Leases Net Investment In Direct Financing Leases Deferred Income CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome	40000000	USD
CY2013Q4	us-gaap	Capital Leases Net Investment In Direct Financing Leases Unguaranteed Residual Values Of Leased Property CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty	40000000	USD
CY2012Q4	us-gaap	Capitalized Computer Software Accumulated Amortization CapitalizedComputerSoftwareAccumulatedAmortization	313000000	USD
CY2013Q4	us-gaap	Capitalized Computer Software Accumulated Amortization CapitalizedComputerSoftwareAccumulatedAmortization	384000000	USD
CY2011	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	65000000	USD
CY2012	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	68000000	USD
CY2013	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	71000000	USD
CY2013Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	668000000	USD
CY2012Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	608000000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	68000000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	65000000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	65000000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	52000000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	3000000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-13000000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-3000000	USD
CY2012Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	20000000	USD
CY2013Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	902000000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	3907000000	USD
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.32
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.59
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.42
CY2013Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2012Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	172351680	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	177087230	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	177087230	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	172351680	shares
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	3587000000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	683000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	702000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	610000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	9000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	8000000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	7000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	711000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	618000000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	690000000	USD
CY2011	us-gaap	Cost Of Goods And Services Energy Commodities And Services CostOfGoodsAndServicesEnergyCommoditiesAndServices	3537000000	USD
CY2012	us-gaap	Cost Of Goods And Services Energy Commodities And Services CostOfGoodsAndServicesEnergyCommoditiesAndServices	3296000000	USD
CY2013	us-gaap	Cost Of Goods And Services Energy Commodities And Services CostOfGoodsAndServicesEnergyCommoditiesAndServices	4055000000	USD
CY2011	us-gaap	Cost Of Services Depreciation And Amortization CostOfServicesDepreciationAndAmortization	977000000	USD
CY2012	us-gaap	Cost Of Services Depreciation And Amortization CostOfServicesDepreciationAndAmortization	995000000	USD
CY2013	us-gaap	Cost Of Services Depreciation And Amortization CostOfServicesDepreciationAndAmortization	1094000000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	7437000000	USD
CY2012	us-gaap	Costs And Expenses CostsAndExpenses	7512000000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	8458000000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	27000000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	190000000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	74000000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	48000000	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	90000000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	239000000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	21000000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	49000000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	16000000	USD
CY2012Q4	us-gaap	Debt Current DebtCurrent	634000000	USD
CY2013Q4	us-gaap	Debt Current DebtCurrent	694000000	USD
CY2013Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	1245000000	USD
CY2013Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	1191000000	USD
CY2012Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	1037000000	USD
CY2013Q4	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	178000000	USD
CY2012Q4	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	159000000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	318000000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	122000000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	39000000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	47000000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	164000000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	220000000	USD
CY2013Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3312000000	USD
CY2012Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3137000000	USD
CY2011	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	220000000	USD
CY2012	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	47000000	USD
CY2013	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	164000000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-98000000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	42000000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	8000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	66000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	0	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1808000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1038000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	-28000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	21000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	41000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	0	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	101000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	266000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	254000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	-33000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	-30000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	33000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	37000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3170000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3349000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	3191000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	3321000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	110000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3372000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3389000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	127000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	256000000	USD
CY2013Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	653000000	USD
CY2012Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	1498000000	USD
CY2011	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.0500
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	37000000	USD
CY2013	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	41000000	USD
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	35000000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1094000000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1018000000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	995000000	USD
CY2013Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	707000000	USD
CY2012Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	869000000	USD
CY2013Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	99000000	USD
CY2012Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	108000000	USD
CY2012Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	39000000	USD
CY2013Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	27000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1016000000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	833000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	147000000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	126000000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	936000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1020000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	151000000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	238000000	USD
CY2013	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-11000000	USD
CY2012	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	65000000	USD
CY2012Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	125000000	USD
CY2013Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	195000000	USD
CY2013Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	43000000	USD
CY2012Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	26000000	USD
CY2012Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	869000000	USD
CY2013Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	698000000	USD
CY2013Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	1176000000	USD
CY2013	us-gaap	Derivatives Methods Of Accounting Nonhedging Derivatives DerivativesMethodsOfAccountingNonhedgingDerivatives	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;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 the Consolidated Statements of Operations. Commodity derivatives used for trading purposes, and financial non-trading commodity derivatives, are accounted for using the mark-to-market method with unrealized and realized gains and losses recorded in Operating revenues. Non-trading physical commodity sale and purchase derivative contracts are generally accounted for using the mark-to-market method with unrealized and realized gains and losses for sales recorded in Operating revenue and purchases recorded in Fuel, purchased power and gas.</font></div></div>
CY2013	us-gaap	Derivatives Reporting Of Derivative Activity DerivativesReportingOfDerivativeActivity	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">DTE Energy considers 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. DTE Energy monitors 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. DTE Energy has obtained an understanding of how these prices are derived. Additionally, DTE Energy selectively corroborates the fair value of its 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 Company has 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 our forward price curves has been assigned to our Risk Management Department, which is separate and distinct from the trading functions within the Company.</font></div><div style="line-height:120%;text-align:left;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></div>
CY2013	us-gaap	Description Of Lessor Leasing Arrangements Capital Leases DescriptionOfLessorLeasingArrangementsCapitalLeases	The Company leases a portion of its pipeline system to the Vector Pipeline through a capital lease contract that expires in 2020, with renewal options extending for five years. The Company owns a 40% interest in the Vector Pipeline. In addition, the Company has an energy services agreement, a portion of which is accounted for as a capital lease. The agreement expires in 2019, with a three or five year renewal option.
CY2011	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-1000000	USD
CY2013	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
CY2012	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-29000000	USD
CY2013	us-gaap	Distributed Earnings DistributedEarnings	454000000	USD
CY2012	us-gaap	Distributed Earnings DistributedEarnings	414000000	USD
CY2011	us-gaap	Distributed Earnings DistributedEarnings	393000000	USD
CY2012	us-gaap	Dividends Common Stock DividendsCommonStock	413000000	USD
CY2011	us-gaap	Dividends Common Stock DividendsCommonStock	392000000	USD
CY2013	us-gaap	Dividends Common Stock DividendsCommonStock	453000000	USD
CY2013	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	454000000	USD
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	392000000	USD
CY2012	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	414000000	USD
CY2012Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	107000000	USD
CY2013Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	116000000	USD
CY2012	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	1000000	USD
CY2011	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	1000000	USD
CY2013	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	1000000	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.56
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.76
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.19
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.70
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.13
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.35
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.86
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.32
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.91
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
CY2013	us-gaap	Earnings Per Share Basic Distributed EarningsPerShareBasicDistributed	2.59
CY2012	us-gaap	Earnings Per Share Basic Distributed EarningsPerShareBasicDistributed	2.42
CY2011	us-gaap	Earnings Per Share Basic Distributed EarningsPerShareBasicDistributed	2.32
CY2013	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	1.17
CY2012	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	1.14
CY2011	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	1.87
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.76
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.55
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.18
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.13
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.60
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.34
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.70
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.31
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.86
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.47
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.91
CY2011	us-gaap	Earnings Per Share Diluted Distributed EarningsPerShareDilutedDistributed	2.32
CY2013	us-gaap	Earnings Per Share Diluted Distributed EarningsPerShareDilutedDistributed	2.59
CY2012	us-gaap	Earnings Per Share Diluted Distributed EarningsPerShareDilutedDistributed	2.42
CY2012	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	1.13
CY2013	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	1.17
CY2011	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	1.86
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.270
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.298
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.275
CY2012	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	5000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	4000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	15000000	USD
CY2013Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	55000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P11M5D
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	25000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	33000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	38000000	USD
CY2012Q4	us-gaap	Energy Related Inventory EnergyRelatedInventory	527000000	USD
CY2013Q4	us-gaap	Energy Related Inventory EnergyRelatedInventory	363000000	USD
CY2013	us-gaap	Excise And Sales Taxes ExciseAndSalesTaxes	0	USD
CY2013	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	961000000	USD
CY2013	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-1000000	USD
CY2012	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	58000000	USD
CY2013	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	43000000	USD
CY2012	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	60000000	USD
CY2012	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Issues FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationIssues	0	USD
CY2013	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Issues FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationIssues	-1000000	USD
CY2013	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases	-7000000	USD
CY2012	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases	2000000	USD
CY2013	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements	-64000000	USD
CY2012	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements	-135000000	USD
CY2013	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Into Level3 FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3	1000000	USD
CY2012	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Into Level3 FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3	1000000	USD
CY2012Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-13000000	USD
CY2011Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	44000000	USD
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-1000000	USD
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1000000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2013Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-36000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	45000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	34000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	13000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	8000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	8000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	11000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	12000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	189000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	179000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	135000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	122000000	USD
CY2012	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	-83000000	USD
CY2011	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2013	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2012	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-1000000	USD
CY2011	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	21000000	USD
CY2013	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	8000000	USD
CY2013Q4	us-gaap	Goodwill Goodwill	2018000000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	2018000000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	2020000000	USD
CY2012	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	-2000000	USD
CY2013	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	0	USD
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.01
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.32
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	286000000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	268000000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	156000000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	137000000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	147000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	666000000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	226000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	960000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	991000000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	922000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	674000000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	668000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	723000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.21
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.89
CY2013	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.76
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.31
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.79
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.91
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.87
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.20
CY2013	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.76
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.88
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.79
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.87
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.91
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.30
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-3000000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-56000000	USD
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-56000000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.33
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.33
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.02
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.32
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.01
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.01
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.02
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	254000000	USD
CY2012	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	4000000	USD
CY2011	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	4000000	USD
CY2013	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	4000000	USD
CY2012	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	14000000	USD
CY2013	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	14000000	USD
CY2011	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	7000000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	336000000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	323000000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	347000000	USD
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation IncomeTaxReconciliationNondeductibleExpenseDepreciation	-4000000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation IncomeTaxReconciliationNondeductibleExpenseDepreciation	-4000000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation IncomeTaxReconciliationNondeductibleExpenseDepreciation	-4000000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-1000000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-4000000	USD
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-5000000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-1000000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-6000000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-5000000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	37000000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	37000000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	37000000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	6000000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	6000000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	6000000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	6000000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	68000000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	49000000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	121000000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-205000000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	173000000	USD
CY2011	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-71000000	USD
CY2013	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	154000000	USD
CY2012	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-52000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	40000000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-23000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	14000000	USD
CY2011	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	-94000000	USD
CY2012	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	53000000	USD
CY2013	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	107000000	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-123000000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	129000000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-35000000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	24000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-44000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-55000000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	48000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	206000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-44000000	USD
CY2012	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	280000000	USD
CY2011	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	432000000	USD
CY2013	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-644000000	USD
CY2013	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	-526000000	USD
CY2012	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	-323000000	USD
CY2011	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	209000000	USD
CY2013	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-1269000000	USD
CY2011	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	662000000	USD
CY2012	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-278000000	USD
CY2013	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	1000000	USD
CY2011	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	5000000	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-2000000	USD
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2012Q4	us-gaap	Intangible Assets Current IntangibleAssetsCurrent	20000000	USD
CY2013Q4	us-gaap	Intangible Assets Current IntangibleAssetsCurrent	12000000	USD
CY2013Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	134000000	USD
CY2012Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	155000000	USD
CY2011	us-gaap	Interest Expense InterestExpense	488000000	USD
CY2013	us-gaap	Interest Expense InterestExpense	436000000	USD
CY2012	us-gaap	Interest Expense InterestExpense	440000000	USD
CY2013	us-gaap	Interest Income Operating InterestIncomeOperating	9000000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	485000000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	438000000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	418000000	USD
CY2013Q4	us-gaap	Interest Payable Current InterestPayableCurrent	90000000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	93000000	USD
CY2013Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	1000000	USD
CY2012Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	234000000	USD
CY2013Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	265000000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	10000000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	10000000	USD
CY2013	us-gaap	Investment Income Interest InvestmentIncomeInterest	9000000	USD
CY2012Q4	us-gaap	Junior Subordinated Long Term Notes JuniorSubordinatedLongTermNotes	480000000	USD
CY2013Q4	us-gaap	Junior Subordinated Long Term Notes JuniorSubordinatedLongTermNotes	480000000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	40000000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	36000000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	34000000	USD
CY2012Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	63000000	USD
CY2013Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	19000000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	26339000000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	25935000000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2768000000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	3189000000	USD
CY2012Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	9146000000	USD
CY2013Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	7578000000	USD
CY2013Q4	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	375000000	USD
CY2013	us-gaap	Line Of Credit Facility Dividend Restrictions LineOfCreditFacilityDividendRestrictions	166
CY2013Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	1975000000	USD
CY2013Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1600000000	USD
CY2013Q4	us-gaap	Long Term Debt LongTermDebt	8094000000	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	7813000000	USD
CY2013Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	7214000000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	7014000000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	817000000	USD
CY2013Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	898000000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	5846000000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	891000000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	9000000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	407000000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	9000000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	465000000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	476000000	USD
CY2013Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	6618000000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	6220000000	USD
CY2012Q4	us-gaap	Long Term Investments LongTermInvestments	1591000000	USD
CY2013Q4	us-gaap	Long Term Investments LongTermInvestments	1794000000	USD
CY2013Q4	us-gaap	Long Term Transition Bond LongTermTransitionBond	105000000	USD
CY2012Q4	us-gaap	Long Term Transition Bond LongTermTransitionBond	302000000	USD
CY2013Q4	us-gaap	Longterm Transition Bond Current LongtermTransitionBondCurrent	197000000	USD
CY2012Q4	us-gaap	Longterm Transition Bond Current LongtermTransitionBondCurrent	177000000	USD
CY2013Q4	us-gaap	Longterm Transition Bond Current And Noncurrent LongtermTransitionBondCurrentAndNoncurrent	302000000	USD
CY2012Q4	us-gaap	Longterm Transition Bond Current And Noncurrent LongtermTransitionBondCurrentAndNoncurrent	479000000	USD
CY2013Q4	us-gaap	Minority Interest MinorityInterest	33000000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	38000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-261000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-445000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-443000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1906000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1769000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1560000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2154000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2209000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2008000000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	610000000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	711000000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	661000000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	234000000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	124000000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	198000000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	105000000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	81000000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	146000000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	156000000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	227000000	USD
CY2013	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7000000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	8000000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-430000000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-319000000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-281000000	USD
CY2013Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	102000000	USD
CY2012Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	112000000	USD
CY2012Q4	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	14	facilities
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	1421000000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	1203000000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	1279000000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	241000000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	223000000	USD
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	329000000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	410000000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	294000000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	312000000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	267000000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	406000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	230000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	35000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	20000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	25000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	27000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	31000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	92000000	USD
CY2013Q4	us-gaap	Other Assets Current OtherAssetsCurrent	209000000	USD
CY2012Q4	us-gaap	Other Assets Current OtherAssetsCurrent	215000000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	197000000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	198000000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	-1000000	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	13000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-9000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	22000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	2000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	9000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-22000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1000000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	5000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-13000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	1000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	2000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2013	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	-9000000	USD
CY2012	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	-3000000	USD
CY2011	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1000000	USD
CY2013Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	495000000	USD
CY2012Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	449000000	USD
CY2013Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	297000000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	306000000	USD
CY2012Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	554000000	USD
CY2013Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	603000000	USD
CY2012	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	62000000	USD
CY2011	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	69000000	USD
CY2013	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	55000000	USD
CY2013	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	201000000	USD
CY2012	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	173000000	USD
CY2011	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	117000000	USD
CY2013Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	350000000	USD
CY2012Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	1160000000	USD
CY2012Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	126000000	USD
CY2013Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	127000000	USD
CY2013	us-gaap	Other Restrictions On Payment Of Dividends OtherRestrictionsOnPaymentOfDividends	0
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	49000000	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	41000000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	72000000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	18000000	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	445000000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	407000000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	389000000	USD
CY2012Q4	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	220000000	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	198000000	USD
CY2013	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2013	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	1134000000	USD
CY2011	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	850000000	USD
CY2012	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	764000000	USD
CY2012	us-gaap	Prescription Drug Benefit Effect Of Subsidy On Net Periodic Postretirement Benefit Cost1 PrescriptionDrugBenefitEffectOfSubsidyOnNetPeriodicPostretirementBenefitCost1	6000000	USD
CY2013	us-gaap	Prescription Drug Benefit Effect Of Subsidy On Net Periodic Postretirement Benefit Cost1 PrescriptionDrugBenefitEffectOfSubsidyOnNetPeriodicPostretirementBenefitCost1	1000000	USD
CY2011	us-gaap	Prescription Drug Benefit Effect Of Subsidy On Net Periodic Postretirement Benefit Cost1 PrescriptionDrugBenefitEffectOfSubsidyOnNetPeriodicPostretirementBenefitCost1	6000000	USD
CY2013	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2011	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2012	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	255000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	39000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	39000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	759000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1179000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1234000000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-31000000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-16000000	USD
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-19000000	USD
CY2012	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-179000000	USD
CY2011	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	269000000	USD
CY2013	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-109000000	USD
CY2011	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	833000000	USD
CY2013	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	1118000000	USD
CY2012	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	759000000	USD
CY2012	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	38000000	USD
CY2013	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	36000000	USD
CY2011	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	18000000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	668000000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	720000000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	618000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	23631000000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	25123000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	14684000000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	15800000000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	2292000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	1960000000	USD
CY2012	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	13000000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	15000000	USD
CY2011	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	6000000	USD
CY2012	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	20000000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	23000000	USD
CY2013Q4	us-gaap	Purchase Obligation PurchaseObligation	8598000000	USD
CY2013Q4	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	3487000000	USD
CY2013Q4	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	311000000	USD
CY2013Q4	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	345000000	USD
CY2013Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	2617000000	USD
CY2013Q4	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	1195000000	USD
CY2013Q4	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	643000000	USD
CY2013	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-9000000	USD
CY2012Q4	us-gaap	Regulatory Assets RegulatoryAssets	4417000000	USD
CY2013Q4	us-gaap	Regulatory Assets RegulatoryAssets	2863000000	USD
CY2012Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	182000000	USD
CY2013Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	26000000	USD
CY2013Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	2837000000	USD
CY2012Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	4235000000	USD
CY2012Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	1120000000	USD
CY2013Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	1164000000	USD
CY2013Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	302000000	USD
CY2012Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	89000000	USD
CY2012Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1031000000	USD
CY2013Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	862000000	USD
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	639000000	USD
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	961000000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1455000000	USD
CY2013Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	123000000	USD
CY2012Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	122000000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4150000000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3944000000	USD
CY2011	us-gaap	Revenues Revenues	8858000000	USD
CY2012	us-gaap	Revenues Revenues	8791000000	USD
CY2013	us-gaap	Revenues Revenues	9661000000	USD
CY2013Q1	us-gaap	Revenues Revenues	2516000000	USD
CY2013Q3	us-gaap	Revenues Revenues	2387000000	USD
CY2013Q4	us-gaap	Revenues Revenues	2533000000	USD
CY2013Q2	us-gaap	Revenues Revenues	2225000000	USD
CY2012Q3	us-gaap	Revenues Revenues	2190000000	USD
CY2012Q4	us-gaap	Revenues Revenues	2349000000	USD
CY2012Q2	us-gaap	Revenues Revenues	2013000000	USD
CY2012Q1	us-gaap	Revenues Revenues	2239000000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	25000000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	12000000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	20000000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	10370	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	18000000	USD
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1192670	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	723697	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	41.86
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	42.60
CY2013Q4	us-gaap	Securitized Regulatory Transition Assets Noncurrent SecuritizedRegulatoryTransitionAssetsNoncurrent	231000000	USD
CY2012Q4	us-gaap	Securitized Regulatory Transition Assets Noncurrent SecuritizedRegulatoryTransitionAssetsNoncurrent	413000000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	11500000	shares
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	40.71
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	41.46
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.00
CY2013Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	723697	shares
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y9M30D
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	200844	shares
CY2013Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	42.60
CY2013	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P3Y10M
CY2012Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	240000000	USD
CY2013Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	131000000	USD
CY2012Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.004
CY2013Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.002
CY2013Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	1000000	USD
CY2012	us-gaap	Stock Issued1 StockIssued1	155000000	USD
CY2013	us-gaap	Stock Issued1 StockIssued1	293000000	USD
CY2011	us-gaap	Stock Issued1 StockIssued1	15000000	USD
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	458603	shares
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	39000000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	39000000	USD
CY2013	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	0	USD
CY2011	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	2000000	USD
CY2012	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	700000	USD
CY2011	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	58000000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	7921000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	7373000000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7954000000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7411000000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7053000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6767000000	USD
CY2011	us-gaap	Stockholders Equity Other StockholdersEquityOther	25000000	USD
CY2013	us-gaap	Stockholders Equity Other StockholdersEquityOther	68000000	USD
CY2012	us-gaap	Stockholders Equity Other StockholdersEquityOther	35000000	USD
CY2013	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	340000000	USD
CY2011	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	310000000	USD
CY2012	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	332000000	USD
CY2013	us-gaap	Threshold Period Past Due For Writeoff Of Trade Accounts Receivable ThresholdPeriodPastDueForWriteoffOfTradeAccountsReceivable	P150D
CY2012	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	11000000	USD
CY2011	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	4000000	USD
CY2013	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	22000000	USD
CY2012	us-gaap	Undistributed Earnings UndistributedEarnings	196000000	USD
CY2013	us-gaap	Undistributed Earnings UndistributedEarnings	207000000	USD
CY2011	us-gaap	Undistributed Earnings UndistributedEarnings	318000000	USD
CY2013	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	207000000	USD
CY2011	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	318000000	USD
CY2012	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	196000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	11000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	48000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	28000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	4000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	3000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	30000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	27000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-2000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-1000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	6000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3000000	USD
CY2013	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	2978000000	USD
CY2012	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	2892000000	USD
CY2011	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	2612000000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	79000000	USD
CY2013	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	94000000	USD
CY2011	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	94000000	USD
CY2012Q4	dte	Cash Collateral Paid CashCollateralPaid	4000000	USD
CY2013Q4	dte	Cash Collateral Paid CashCollateralPaid	34000000	USD
CY2013Q4	dte	Cash Collateral Paid Or Received For Derivative Assets CashCollateralPaidOrReceivedForDerivativeAssets	26000000	USD
CY2012Q4	dte	Cash Collateral Paid Or Received For Derivative Assets CashCollateralPaidOrReceivedForDerivativeAssets	0	USD
CY2013Q4	dte	Cash Collateral Paid Or Received For Derivative Liabilities CashCollateralPaidOrReceivedForDerivativeLiabilities	17000000	USD
CY2013Q4	dte	Cash Collateral Posted Net Of Cash Collateral Received CashCollateralPostedNetOfCashCollateralReceived	12000000	USD
CY2011	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	18000000	USD
CY2013	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	23000000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	16000000	USD
CY2011	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	146000000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	195000000	USD
CY2013	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	124000000	USD
CY2013Q4	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	0	USD
CY2012	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	172000000	shares
CY2011	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	170000000	shares
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	175000000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	169000000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	171000000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175000000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	175000000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171000000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	169000000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	1000000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	1000000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	1000000	shares
CY2012Q4	dte	Accrued Expenses Relatedto Fermi2 Refueling Outages AccruedExpensesRelatedtoFermi2RefuelingOutages	12000000	USD
CY2013Q4	dte	Accrued Expenses Relatedto Fermi2 Refueling Outages AccruedExpensesRelatedtoFermi2RefuelingOutages	26000000	USD
CY2011	dte	Additions To Noncurrent Assets1 AdditionsToNoncurrentAssets1	1484000000	USD
CY2013	dte	Additions To Noncurrent Assets1 AdditionsToNoncurrentAssets1	1876000000	USD
CY2012	dte	Additions To Noncurrent Assets1 AdditionsToNoncurrentAssets1	1820000000	USD
CY2013	dte	Amortization Period For Enterprise Business Systems AmortizationPeriodForEnterpriseBusinessSystems	P10Y
CY2013	dte	Amortization Period Of Cost To Achieve Deferral AmortizationPeriodOfCostToAchieveDeferral	P10Y
CY2012Q4	dte	Amortization Years For Intangible Assets Acquired In Business Combination AmortizationYearsForIntangibleAssetsAcquiredInBusinessCombination	P8Y
CY2013Q3	dte	Bankruptcy Claims Accounts Receivableunder Reviewby Management BankruptcyClaimsAccountsReceivableunderReviewbyManagement	20000000	USD
CY2012Q4	dte	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Noncontrolling Interest BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNoncontrollingInterest	1000000	USD
CY2013Q4	dte	Deferred Tax Assets State Net Operating Loss And Credit Carry Forwards DeferredTaxAssetsStateNetOperatingLossAndCreditCarryForwards	43000000	USD
CY2012Q4	dte	Deferred Tax Assets State Net Operating Loss And Credit Carry Forwards DeferredTaxAssetsStateNetOperatingLossAndCreditCarryForwards	37000000	USD
CY2012Q4	dte	Cash Collateral Received CashCollateralReceived	24000000	USD
CY2013Q4	dte	Cash Collateral Received CashCollateralReceived	13000000	USD
CY2011	dte	Charitable Contributionsto Dte Energy Foundation CharitableContributionstoDTEEnergyFoundation	21000000	USD
CY2013	dte	Charitable Contributionsto Dte Energy Foundation CharitableContributionstoDTEEnergyFoundation	18000000	USD
CY2012	dte	Charitable Contributionsto Dte Energy Foundation CharitableContributionstoDTEEnergyFoundation	21000000	USD
CY2013Q4	dte	Company Contributionto Employee Savings Plan CompanyContributiontoEmployeeSavingsPlan	0.04
CY2013Q4	dte	Company Retiree New Coverage Maximum CompanyRetireeNewCoverageMaximum	3500	USD
CY2013Q4	dte	Company Retiree New Coverage Minimum CompanyRetireeNewCoverageMinimum	3250	USD
CY2011Q2	dte	Consistentwith Original Treatmentof Deferred Tax Liabilities No Cash Flow Impact ConsistentwithOriginalTreatmentofDeferredTaxLiabilitiesNoCashFlowImpact	0	USD
CY2012	dte	Contribution Of Common Stock To Pension Plan ContributionOfCommonStockToPensionPlan	80000000	USD
CY2013	dte	Contribution Of Common Stock To Pension Plan ContributionOfCommonStockToPensionPlan	200000000	USD
CY2013	dte	Deferral Of Investigation And Remediation Of Costs Associated With Gas Utilities Former Mgp Sites DeferralOfInvestigationAndRemediationOfCostsAssociatedWithGasUtilitiesFormerMgpSites	P10Y
CY2012Q4	dte	Deferred Tax Assets Merger Basis Differences DeferredTaxAssetsMergerBasisDifferences	42000000	USD
CY2013Q4	dte	Deferred Tax Assets Merger Basis Differences DeferredTaxAssetsMergerBasisDifferences	18000000	USD
CY2013Q4	dte	Deferred Tax Liability Netof Valuation Allowance DeferredTaxLiabilityNetofValuationAllowance	5157000000	USD
CY2012Q4	dte	Deferred Tax Liability Netof Valuation Allowance DeferredTaxLiabilityNetofValuationAllowance	4208000000	USD
CY2011	dte	Defined Benefit Plan Health Care Trend Rate Pre And Post Sixty Five DefinedBenefitPlanHealthCareTrendRatePreAndPostSixtyFive	0.0700
CY2013	dte	Epa Sulfur Dioxide Ambient Air Quality Standard EPASulfurDioxideAmbientAirQualityStandard	PT1H
CY2012Q4	dte	Earnings Of Acquired Business Included In Companys Consolidated Statements Of Operations EarningsOfAcquiredBusinessIncludedInCompanysConsolidatedStatementsOfOperations	2000000	USD
CY2011	dte	Enactment Of Michigan Corporate Income Tax Net Of Federal Expense EnactmentOfMichiganCorporateIncomeTaxNetOfFederalExpense	-87000000	USD
CY2013	dte	Enactment Of Michigan Corporate Income Tax Net Of Federal Expense EnactmentOfMichiganCorporateIncomeTaxNetOfFederalExpense	0	USD
CY2012	dte	Enactment Of Michigan Corporate Income Tax Net Of Federal Expense EnactmentOfMichiganCorporateIncomeTaxNetOfFederalExpense	0	USD
CY2013Q4	dte	Estimated Future Capital Expenditures For Next Year EstimatedFutureCapitalExpendituresForNextYear	2300000000	USD
CY2012Q4	dte	Exposure Loss Related To Debt Assumed ExposureLossRelatedToDebtAssumed	0	USD
CY2012	dte	Fair Value Net Derivative Asset Liability Measuredon Recurring Basis Unobservable Inputs Reconciliation Gainsand Losses Recorded In Regulatory Assets Liabilities FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainsandLossesRecordedInRegulatoryAssetsLiabilities	15000000	USD
CY2013	dte	Fair Value Net Derivative Asset Liability Measuredon Recurring Basis Unobservable Inputs Reconciliation Gainsand Losses Recorded In Regulatory Assets Liabilities FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainsandLossesRecordedInRegulatoryAssetsLiabilities	5000000	USD
CY2013	dte	Fair Value Transferfrom Level1to Level2 Amount FairValueTransferfromLevel1toLevel2Amount	0	USD
CY2012	dte	Fair Value Transferfrom Level1to Level2 Amount FairValueTransferfromLevel1toLevel2Amount	0	USD
CY2012	dte	Fair Value Transferfrom Level1to Level3 Amount FairValueTransferfromLevel1toLevel3Amount	0	USD
CY2013	dte	Fair Value Transferfrom Level1to Level3 Amount FairValueTransferfromLevel1toLevel3Amount	0	USD
CY2013	dte	Fair Value Transferfrom Level2to Level1 Amount FairValueTransferfromLevel2toLevel1Amount	0	USD
CY2012	dte	Fair Value Transferfrom Level2to Level1 Amount FairValueTransferfromLevel2toLevel1Amount	0	USD
CY2012	dte	Fair Value Transferfrom Level2to Level3 Amount FairValueTransferfromLevel2toLevel3Amount	1000000	USD
CY2013	dte	Fair Value Transferfrom Level2to Level3 Amount FairValueTransferfromLevel2toLevel3Amount	1000000	USD
CY2013	dte	Fair Value Transferfrom Level3to Level1 Amount FairValueTransferfromLevel3toLevel1Amount	0	USD
CY2012	dte	Fair Value Transferfrom Level3to Level1 Amount FairValueTransferfromLevel3toLevel1Amount	0	USD
CY2012	dte	Fair Value Transferfrom Level3to Level2 Amount FairValueTransferfromLevel3toLevel2Amount	0	USD
CY2013	dte	Fair Value Transferfrom Level3to Level2 Amount FairValueTransferfromLevel3toLevel2Amount	0	USD
CY2013Q4	dte	Long Term Debtexcluding Securitization Debenturesand Capital Leases LongTermDebtexcludingSecuritizationDebenturesandCapitalLeases	7312000000	USD
CY2012Q4	dte	Long Term Debtexcluding Securitization Debenturesand Capital Leases LongTermDebtexcludingSecuritizationDebenturesandCapitalLeases	6854000000	USD
CY2012Q3	dte	Fermi2 Production Levelof Full Capacity Fermi2ProductionLevelofFullCapacity	0.68
CY2012Q4	dte	Grantor Trust Balance GrantorTrustBalance	14000000	USD
CY2013Q4	dte	Grantor Trust Balance GrantorTrustBalance	17000000	USD
CY2012	dte	Income Tax Expense Benefitincluding Discontinued Operations IncomeTaxExpenseBenefitincludingDiscontinuedOperations	257000000	USD
CY2013	dte	Income Tax Expense Benefitincluding Discontinued Operations IncomeTaxExpenseBenefitincludingDiscontinuedOperations	254000000	USD
CY2011	dte	Income Tax Expense Benefitincluding Discontinued Operations IncomeTaxExpenseBenefitincludingDiscontinuedOperations	267000000	USD
CY2013Q4	dte	Maximum Percentage Of Commitment To Bank In Any Facility MaximumPercentageOfCommitmentToBankInAnyFacility	0.087
CY2013Q4	dte	Maximum Total Funded Debtto Total Capitalization Ratio MaximumTotalFundedDebttoTotalCapitalizationRatio	0.65
CY2013Q4	dte	Jointly Owned Utility Plant Number Of Plants JointlyOwnedUtilityPlantNumberOfPlants	2	facilities
CY2013Q4	dte	Liabilities Balance Upon Completion Of Decommissioning LiabilitiesBalanceUponCompletionOfDecommissioning	0	USD
CY2011Q2	dte	Michigan Corporate Income Tax MichiganCorporateIncomeTax	0.06
CY2013Q3	dte	Monthly Funding Factorforall Michigan Electricutilitiesparticipatingin Low Income Energy Assistance Fund MonthlyFundingFactorforallMichiganElectricutilitiesparticipatinginLowIncomeEnergyAssistanceFund	0.0099	USD
CY2011Q2	dte	Netimpactof Michigan Corporate Income Taxenactmentdecreaseindeferredtaxliabilitiesattributabletononutilities NetimpactofMichiganCorporateIncomeTaxenactmentdecreaseindeferredtaxliabilitiesattributabletononutilities	87000000	USD
CY2012Q4	dte	Notes Receivable Excudling Capital Leases NotesReceivableExcudlingCapitalLeases	39000000	USD
CY2013Q4	dte	Notes Receivable Excudling Capital Leases NotesReceivableExcudlingCapitalLeases	41000000	USD
CY2013	dte	Nuclearfuelamortization Nuclearfuelamortization	38000000	USD
CY2011	dte	Nuclearfuelamortization Nuclearfuelamortization	46000000	USD
CY2012	dte	Nuclearfuelamortization Nuclearfuelamortization	29000000	USD
CY2013Q4	dte	Number Of Banks That Provide Percentage Of Commitment In Any Facility NumberOfBanksThatProvidePercentageOfCommitmentInAnyFacility	1	banks
CY2013Q4	dte	Number Of Citizens Gas Customers NumberOfCitizensGasCustomers	17000	customers
CY2013Q4	dte	Number Of Electric Utility Customers NumberOfElectricUtilityCustomers	2100000	customers
CY2013Q4	dte	Number Of Gas Utility Customers NumberOfGasUtilityCustomers	1200000	customers
CY2010Q4	dte	Number Of Novs NumberOfNovs	2
CY2012Q4	dte	Numberof Project Companies Acquired Deemed Vi Esthatassumed Debt Relatesto NumberofProjectCompaniesAcquiredDeemedVIEsthatassumedDebtRelatesto	2	facilities
CY2013Q4	dte	Numberof Represented Employees NumberofRepresentedEmployees	4900	employees
CY2013Q1	dte	Psc Runderrecoveryfrom One Plan Year Prior PSCRunderrecoveryfromOnePlanYearPrior	87000000	USD
CY2010Q4	dte	Psc Runderrecoveryfrom Three Plan Years Prior PSCRunderrecoveryfromThreePlanYearsPrior	52600000	USD
CY2013Q2	dte	Pension Equalization Mechanism Reconciliationsurchargelength PensionEqualizationMechanismReconciliationsurchargelength	P1M
CY2013Q4	dte	Performance Bonds Outstanding PerformanceBondsOutstanding	41000000	USD
CY2013	dte	Performance Units Price Per Unit PerformanceUnitsPricePerUnit	1.00
CY2013	dte	Period Expenses Related To Fermi2 Refueling Outages Are Accrued PeriodExpensesRelatedToFermi2RefuelingOutagesAreAccrued	P18M
CY2012	dte	Plant And Equipment Expenditures Non Utility PlantAndEquipmentExpendituresNonUtility	369000000	USD
CY2011	dte	Plant And Equipment Expenditures Non Utility PlantAndEquipmentExpendituresNonUtility	102000000	USD
CY2013	dte	Plant And Equipment Expenditures Non Utility PlantAndEquipmentExpendituresNonUtility	342000000	USD
CY2011	dte	Plant And Equipment Expenditures Utility PlantAndEquipmentExpendituresUtility	1382000000	USD
CY2013	dte	Plant And Equipment Expenditures Utility PlantAndEquipmentExpendituresUtility	1534000000	USD
CY2012	dte	Plant And Equipment Expenditures Utility PlantAndEquipmentExpendituresUtility	1451000000	USD
CY2013	dte	Possible Environmental Capital Expenditures To Comply With Requirements PossibleEnvironmentalCapitalExpendituresToComplyWithRequirements	3000000	USD
CY2013	dte	Probability Of Recovery Through Regulatory Rates For Regulatory Assets And Liabilities ProbabilityOfRecoveryThroughRegulatoryRatesForRegulatoryAssetsAndLiabilities	0	USD
CY2013Q4	dte	Property Plant And Equipment Accumulated Depreciation Nonutility And Other PropertyPlantAndEquipmentAccumulatedDepreciationNonutilityAndOther	767000000	USD
CY2012Q4	dte	Property Plant And Equipment Accumulated Depreciation Nonutility And Other PropertyPlantAndEquipmentAccumulatedDepreciationNonutilityAndOther	676000000	USD
CY2013Q1	dte	Pscr Under Recovery From Two Plan Years Prior PscrUnderRecoveryFromTwoPlanYearsPrior	148000000	USD
	dte	Rep Surcharge Revenue Recovery REPSurchargeRevenueRecovery	15000000	USD
CY2013	dte	Rdm Cap For Second Period Reconciliation RdmCapForSecondPeriodReconciliation	0.0225
CY2013	dte	Rdm Caps For First Reconciliation Period RdmCapsForFirstReconciliationPeriod	0.01125
CY2013	dte	Receivables Due Date ReceivablesDueDate	P21D
CY2013Q1	dte	Retiree Health Care Allowance RetireeHealthCareAllowance	3250	USD
CY2013Q4	dte	Retiree Health Care Allowancewillincreaseatloweroftherateofmedicalinflationorasetpercentage RetireeHealthCareAllowancewillincreaseatloweroftherateofmedicalinflationorasetpercentage	0.02
CY2012Q4	dte	Revenues Of Acquired Business Included In Companys Consolidated Statement Of Operations RevenuesOfAcquiredBusinessIncludedInCompanysConsolidatedStatementOfOperations	30000000	USD
CY2013Q4	dte	Revolving Credit Facilities With Syndicate Number Of Banks RevolvingCreditFacilitiesWithSyndicateNumberOfBanks	19	banks
CY2013	dte	Specific Review Of Probable Future Collections Based On Receivable Balances In Excess Of90 Days SpecificReviewOfProbableFutureCollectionsBasedOnReceivableBalancesInExcessOf90Days	P30D
CY2013Q1	dte	The Periodofthe Acquired Project Companies Followingthe Closingincludedin Resultsof Operations ThePeriodoftheAcquiredProjectCompaniesFollowingtheClosingincludedinResultsofOperations	P3M
CY2011Q2	dte	Time Period For Mbt Deferred Tax Asset TimePeriodForMbtDeferredTaxAsset	P1Y
CY2013	dte	Time Period Required By Non Bypassable Securitization Bond Surcharge To Recover Securitized Regulatory Asset TimePeriodRequiredByNonBypassableSecuritizationBondSurchargeToRecoverSecuritizedRegulatoryAsset	P14Y
CY2013Q4	dte	Timeperiodafterwhichthe Courtof Appealsproposalto Congressfornuclearwastefeereductionwilltakeeffect TimeperiodafterwhichtheCourtofAppealsproposaltoCongressfornuclearwastefeereductionwilltakeeffect	P90D
CY2013	dte	Unrealized Losses On Available For Sale Securities UnrealizedLossesOnAvailableForSaleSecurities	0	USD
CY2012	dte	Unrealized Losses On Available For Sale Securities UnrealizedLossesOnAvailableForSaleSecurities	0	USD
CY2013Q4	dte	Value Of Transactions Company Would Have Been Exposed To If Credit Rating Below Investment Grade ValueOfTransactionsCompanyWouldHaveBeenExposedToIfCreditRatingBelowInvestmentGrade	406000000	USD
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q4
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0000936340
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	177086236	shares
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2013Q2	dei	Entity Public Float EntityPublicFloat	11700000000	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	DTE ENERGY CO
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No

Files In Submission

Name	View Source	Status
0000936340-14-000014-index-headers.html	Edgar Link	pending
0000936340-14-000014-index.html	Edgar Link	pending
0000936340-14-000014.txt	Edgar Link	pending
0000936340-14-000014-xbrl.zip	Edgar Link	pending
a20131231ex1256.htm	Edgar Link	pending
a20131231ex219.htm	Edgar Link	pending
a20131231ex2327.htm	Edgar Link	pending
a20131231ex3187.htm	Edgar Link	pending
a20131231ex3188.htm	Edgar Link	pending
a20131231ex3287.htm	Edgar Link	pending
a20131231ex3288.htm	Edgar Link	pending
a20131231ex4-282.htm	Edgar Link	pending
a20131231ex4-283.htm	Edgar Link	pending
a20131231ex99-55.htm	Edgar Link	pending
a20131231ex99-56.htm	Edgar Link	pending
dte-20131231.xml	Edgar Link	completed
dte-20131231.xsd	Edgar Link	pending
dte-20131231_cal.xml	Edgar Link	unprocessable
dte-20131231_def.xml	Edgar Link	unprocessable
dte-20131231_lab.xml	Edgar Link	unprocessable
dte-20131231_pre.xml	Edgar Link	unprocessable
dteenergy2013123110k.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
finalorgcharta02.jpg	Edgar Link	pending
Financial_Report.xls	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
fiveyearreturn.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
R111.htm	Edgar Link	pending
R112.htm	Edgar Link	pending
R113.htm	Edgar Link	pending
R114.htm	Edgar Link	pending
R115.htm	Edgar Link	pending
R116.htm	Edgar Link	pending
R117.htm	Edgar Link	pending
R118.htm	Edgar Link	pending
R119.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R120.htm	Edgar Link	pending
R121.htm	Edgar Link	pending
R122.htm	Edgar Link	pending
R123.htm	Edgar Link	pending
R124.htm	Edgar Link	pending
R125.htm	Edgar Link	pending
R126.htm	Edgar Link	pending
R127.htm	Edgar Link	pending
R128.htm	Edgar Link	pending
R129.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R130.htm	Edgar Link	pending
R131.htm	Edgar Link	pending
R132.htm	Edgar Link	pending
R133.htm	Edgar Link	pending
R134.htm	Edgar Link	pending
R135.htm	Edgar Link	pending
R136.htm	Edgar Link	pending
R137.htm	Edgar Link	pending
R138.htm	Edgar Link	pending
R139.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R140.htm	Edgar Link	pending
R141.htm	Edgar Link	pending
R142.htm	Edgar Link	pending
R143.htm	Edgar Link	pending
R144.htm	Edgar Link	pending
R145.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
secondamendmentsaving_image1.gif	Edgar Link	pending
secondamendmentsaving_image2.jpg	Edgar Link	pending
secondamendmentsaving_image3.gif	Edgar Link	pending
secondamendmentsaving_image5.gif	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$DTE
DTE ENERGY CO Stock $dte

2012 Q4 Form 10-K Financial Statement

#000093634014000014 Filed on February 14, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DTE DTE ENERGY CO Stock $dte

2012 Q4 Form 10-K Financial Statement

#000093634014000014 Filed on February 14, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DTE
DTE ENERGY CO Stock $dte