$SO
SOUTHERN CO Stock $so

$so Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000009212214000012 Filed on February 27, 2014

Income Statement

Concept	2012 Q4	2012 Q3	2012 Q2
Revenue	$3.703B	$5.049B	$4.181B
YoY Change	0.19%	-6.98%	-7.52%
Cost Of Revenue	$89.00M	$164.0M	$150.0M
YoY Change	-39.86%	-23.72%	3.45%
Gross Profit	$3.614B	$4.885B	$4.031B
YoY Change	1.86%	-6.29%	-7.88%
Gross Profit Margin	97.6%	96.75%	96.41%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$543.0M	$538.0M	$535.0M
YoY Change	4.83%	3.66%	4.9%
% of Gross Profit	15.02%	11.01%	13.27%
Operating Expenses	$2.800B	$3.145B	$2.907B
YoY Change	-5.37%	-11.68%	-10.28%
Operating Profit	$814.0M	$1.740B	$1.143B
YoY Change	38.2%	5.33%	0.62%
Interest Expense	-$204.0M	-$218.0M	-$220.0M
YoY Change	-6.85%	0.46%	10.55%
% of Operating Profit	-25.06%	-12.53%	-19.25%
Other Income/Expense, Net	$25.00M	-$178.0M	-$175.0M
YoY Change	733.33%	1.14%	-646.88%
Pretax Income	$635.0M	$1.562B	$968.0M
YoY Change	70.24%	5.83%	-0.1%
Income Tax	$236.0M	$569.0M	$329.0M
% Of Pretax Income	37.17%	36.43%	33.99%
Net Earnings	$399.0M	$993.0M	$639.0M
YoY Change	44.04%	6.43%	3.06%
Net Earnings / Revenue	10.78%	19.67%	15.28%
Basic Earnings Per Share	$0.44	$1.11	$0.71
Diluted Earnings Per Share	$0.44	$1.11	$0.71
COMMON SHARES
Basic Shares Outstanding		876.0M shares	872.0M shares
Diluted Shares Outstanding		883.0M shares	880.0M shares

Balance Sheet

Concept	2012 Q4	2012 Q3	2012 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$628.0M	$1.256B	$659.0M
YoY Change	-52.24%	-17.15%	50.8%
Cash & Equivalents	$628.0M	$1.256B	$659.0M
Short-Term Investments
Other Short-Term Assets	$74.00M	$60.00M	$1.701B
YoY Change	60.87%	-95.07%	33.62%
Inventory	$2.819B	$2.530B	$2.591B
Prepaid Expenses	$657.0M	$519.0M
Receivables	$944.0M	$1.346B	$1.141B
Other Receivables	$264.0M	$240.0M	$281.0M
Total Short-Term Assets	$6.162B	$6.696B	$6.373B
YoY Change	-1.75%	3.09%	15.83%
LONG-TERM ASSETS
Property, Plant & Equipment	$48.39B	$47.27B	$46.57B
YoY Change	7.51%	7.94%	7.59%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$549.0M	$568.0M	$7.958B
YoY Change	13.9%	-91.94%	9.89%
Total Long-Term Assets	$56.99B	$55.27B	$54.52B
YoY Change	7.53%	8.69%	7.92%
TOTAL ASSETS
Total Short-Term Assets	$6.162B	$6.696B	$6.373B
Total Long-Term Assets	$56.99B	$55.27B	$54.52B
Total Assets	$63.15B	$61.96B	$60.90B
YoY Change	6.55%	8.06%	8.7%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.387B	$1.280B	$1.253B
YoY Change	-10.69%	-5.54%	-11.95%
Accrued Expenses	$1.275B	$1.270B	$1.030B
YoY Change	-3.99%	0.4%	-5.16%
Deferred Revenue
YoY Change
Short-Term Debt	$825.0M	$335.0M	$453.0M
YoY Change	-3.96%	144.53%	-47.14%
Long-Term Debt Due	$2.335B	$2.433B	$2.075B
YoY Change	35.99%	28.66%	53.25%
Total Short-Term Liabilities	$7.014B	$6.569B	$6.088B
YoY Change	6.64%	16.12%	6.83%
LONG-TERM LIABILITIES
Long-Term Debt	$19.27B	$18.96B	$19.46B
YoY Change	3.36%	1.19%	4.88%
Other Long-Term Liabilities	$668.0M	$641.0M	$5.872B
YoY Change	29.96%	-86.71%	21.78%
Total Long-Term Liabilities	$668.0M	$641.0M	$25.33B
YoY Change	29.96%	-97.28%	8.36%
TOTAL LIABILITIES
Total Short-Term Liabilities	$7.014B	$6.569B	$6.088B
Total Long-Term Liabilities	$668.0M	$641.0M	$25.33B
Total Liabilities	$43.77B	$42.24B	$41.69B
YoY Change	7.79%	9.36%	9.83%
SHAREHOLDERS EQUITY
Retained Earnings	$9.626B	$9.670B
YoY Change	7.34%
Common Stock	$9.244B	$9.217B
YoY Change	5.79%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$450.0M	$136.0M
YoY Change	2547.06%
Treasury Stock Shares	10.00M shares	3.100M shares
Shareholders Equity	$18.30B	$19.72B	$19.21B
YoY Change
Total Liabilities & Shareholders Equity	$63.15B	$61.96B	$60.90B
YoY Change	6.55%	8.06%	8.7%

Cashflow Statement

Concept	2012 Q4	2012 Q3	2012 Q2
OPERATING ACTIVITIES
Net Income	$399.0M	$993.0M	$639.0M
YoY Change	44.04%	6.43%	3.06%
Depreciation, Depletion And Amortization	$543.0M	$538.0M	$535.0M
YoY Change	4.83%	3.66%	4.9%
Cash From Operating Activities	$854.0M	$2.287B	$1.189B
YoY Change	-34.56%	3.53%	-14.52%
INVESTING ACTIVITIES
Capital Expenditures	-$1.251B	-$1.202B	-$1.125B
YoY Change	-11.28%	21.54%	8.17%
Acquisitions
YoY Change
Other Investing Activities	-$159.0M	$235.0M	-$239.0M
YoY Change	-227.2%	51.61%	70.71%
Cash From Investing Activities	-$1.410B	-$967.0M	-$1.364B
YoY Change	9.73%	15.95%	15.59%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-72.00M	-723.0M	-210.0M
YoY Change	-67.42%	144.26%	14.13%
NET CHANGE
Cash From Operating Activities	854.0M	2.287B	1.189B
Cash From Investing Activities	-1.410B	-967.0M	-1.364B
Cash From Financing Activities	-72.00M	-723.0M	-210.0M
Net Change In Cash	-628.0M	597.0M	-385.0M
YoY Change	212.44%	-44.67%	-1525.93%
FREE CASH FLOW
Cash From Operating Activities	$854.0M	$2.287B	$1.189B
Capital Expenditures	-$1.251B	-$1.202B	-$1.125B
Free Cash Flow	$2.105B	$3.489B	$2.314B
YoY Change	-22.47%	9.1%	-4.81%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q4	so	Portion Included In Current Tax Liabilities Current Tax Assets Net PortionIncludedInCurrentTaxLiabilitiesCurrentTaxAssetsNet	143000000	USD
CY2012Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	961000000	USD
CY2013Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	1027000000	USD
CY2013Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	456000000	USD
CY2012Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	391000000	USD
CY2013Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	13000000	USD
CY2012Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	10000000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1387000000	USD
CY2013Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1376000000	USD
CY2013Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	303000000	USD
CY2012Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	433000000	USD
CY2013Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	217000000	USD
CY2012Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	212000000	USD
CY2012Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	894000000	USD
CY2013Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	966000000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	23059000000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	21964000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-123000000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-75000000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	5362000000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	4855000000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	89000000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	65000000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	106000000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	25000000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	22000000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	23000000	USD
CY2013Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	18000000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	17000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	333000000	USD
CY2013Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	48000000	USD
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	16000000	shares
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1344000000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	2018000000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1757000000	USD
CY2012	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	112000000	USD
CY2013	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	97000000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	6000000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	45000000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	16000000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	16000000	USD
CY2012	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	272000000	USD
CY2013	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	174000000	USD
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CY2013Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	2006000000	USD
CY2012Q4	us-gaap	Assets Assets	63149000000	USD
CY2013Q4	us-gaap	Assets Assets	64546000000	USD
CY2011Q4	us-gaap	Assets Assets	59267000000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	6162000000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	5599000000	USD
CY2013Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	163000000	USD
CY2012Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	80000000	USD
CY2013Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	29000000	USD
CY2012Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	23000000	USD
CY2012Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	80000000	USD
CY2013Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	164000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	641000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	0	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	27000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	27000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	26000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	20000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	541000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Executory Costs CapitalLeasesFutureMinimumPaymentsExecutoryCosts	142000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	166000000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Net Minimum Payments1 CapitalLeasesFutureMinimumPaymentsNetMinimumPayments1	499000000	USD
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CY2012Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	38653000000	USD
CY2013Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	41483000000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1315000000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	628000000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	659000000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	447000000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	31000000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	868000000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-687000000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.5075
CY2012Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.49
CY2012Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.49
CY2013Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.5075
CY2012Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.4725
CY2013Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.4900
CY2012Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.49
CY2013Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.5075
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1500000000	shares
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1500000000	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	893000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	878000000	shares
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	4461000000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	4389000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2338000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2162000000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1692000000	USD
CY2012Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	5989000000	USD
CY2013Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	7151000000	USD
CY2013	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	461000000	USD
CY2011	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	608000000	USD
CY2012	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	544000000	USD
CY2012	us-gaap	Costs And Expenses CostsAndExpenses	12074000000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	13426000000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	13832000000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	363000000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	57000000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	177000000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	8000000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-10000000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	61000000	USD
CY2012Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	370000000	USD
CY2013Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	380000000	USD
CY2013Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	21650000000	USD
CY2012Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	21530000000	USD
CY2013	us-gaap	Debt Instrument Description Of Variable Rate Basis DebtInstrumentDescriptionOfVariableRateBasis	one-month
CY2012Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	23480000000	USD
CY2013Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	22197000000	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	30000000	USD
CY2012Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	35000000	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Premium DebtInstrumentUnamortizedPremium	79000000	USD
CY2012Q4	us-gaap	Debt Instrument Unamortized Premium DebtInstrumentUnamortizedPremium	88000000	USD
CY2012Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	1303000000	USD
CY2013Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	1465000000	USD
CY2012Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	17482000000	USD
CY2013Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	17527000000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1011000000	USD
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CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	386000000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1096000000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	496000000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1155000000	USD
CY2013Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	13995000000	USD
CY2012Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	13619000000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	110000000	USD
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CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	85000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	3972000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	3624000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	3575000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	3918000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	41000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	1400000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	54000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	49000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	10420000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	9701000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	9938000000	USD
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.67
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.71
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	27000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	36000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	10563000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	202000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	8500000000	USD
CY2013Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	8100000000	USD
CY2010	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0384
CY2011	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0384
CY2013	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0359
CY2012	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0359
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CY2013	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	4000000	USD
CY2013	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	103000000	USD
CY2013	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	5000000	USD
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CY2013	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	2298000000	USD
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CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	111000000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	56000000	USD
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CY2012	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1693000000	USD
CY2013	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1762000000	USD
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CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.88
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.57
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CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.44
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.11
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.42
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.09
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.71
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
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CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.87
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation	0.015
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.34
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.44
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.47
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.09
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.11
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.97
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.356
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.331
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.350
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends EffectiveIncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	0.010
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends EffectiveIncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	0.016
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends EffectiveIncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	0.011
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation	0.009
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation	0.007
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.005
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.025
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.025
CY2011	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.024
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	0.003
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	0.002
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	0.012
CY2012	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	397000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	204000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	528000000	USD
CY2013Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	9000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	9000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	8000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	30000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	60000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	62000000	USD
CY2013Q4	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	1339000000	USD
CY2012Q4	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	1819000000	USD
CY2011	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	1092000000	USD
CY2013	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	749000000	USD
CY2012	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	1188000000	USD
CY2009	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-202000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3749000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3487000000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2559000000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	849000000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1334000000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1219000000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	139000000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-401000000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	38000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-89000000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-5000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	72000000	USD
CY2012	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	-28000000	USD
CY2011	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	10000000	USD
CY2013	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	-138000000	USD
CY2011	us-gaap	Increase Decrease In Fossil Fuel Inventories IncreaseDecreaseInFossilFuelInventories	62000000	USD
CY2012	us-gaap	Increase Decrease In Fossil Fuel Inventories IncreaseDecreaseInFossilFuelInventories	452000000	USD
CY2013	us-gaap	Increase Decrease In Fossil Fuel Inventories IncreaseDecreaseInFossilFuelInventories	-481000000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	37000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	17000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	18000000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	16000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-40000000	USD
CY2013	us-gaap	Increase Decrease In Raw Materials Packaging Materials And Supplies Inventories IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories	-36000000	USD
CY2011	us-gaap	Increase Decrease In Raw Materials Packaging Materials And Supplies Inventories IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories	60000000	USD
CY2012	us-gaap	Increase Decrease In Raw Materials Packaging Materials And Supplies Inventories IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories	97000000	USD
CY2012	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-234000000	USD
CY2011	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-362000000	USD
CY2013	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	153000000	USD
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CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	7000000	shares
CY2013	us-gaap	Interest And Debt Expense InterestAndDebtExpense	824000000	USD
CY2012	us-gaap	Interest And Debt Expense InterestAndDebtExpense	859000000	USD
CY2011	us-gaap	Interest And Debt Expense InterestAndDebtExpense	857000000	USD
CY2012	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	83000000	USD
CY2013	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	92000000	USD
CY2011	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	78000000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	803000000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	759000000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	832000000	USD
CY2013Q4	us-gaap	Interest Payable Current InterestPayableCurrent	251000000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	237000000	USD
CY2013	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	19000000	USD
CY2012	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	40000000	USD
CY2011	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	21000000	USD
CY2013	us-gaap	Investment Tax Credit InvestmentTaxCredit	302000000	USD
CY2012	us-gaap	Investment Tax Credit InvestmentTaxCredit	128000000	USD
CY2011	us-gaap	Investment Tax Credit InvestmentTaxCredit	85000000	USD
CY2013Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust Current JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustCurrent	206000000	USD
CY2012Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust Current JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustCurrent	206000000	USD
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CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	176000000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	155000000	USD
CY2013Q4	us-gaap	Leveraged Leases Balance Sheet Investment In Leveraged Leases Net LeveragedLeasesBalanceSheetInvestmentInLeveragedLeasesNet	665000000	USD
CY2012Q4	us-gaap	Leveraged Leases Balance Sheet Investment In Leveraged Leases Net LeveragedLeasesBalanceSheetInvestmentInLeveragedLeasesNet	670000000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	43770000000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	44407000000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	63149000000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	64546000000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	7014000000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	5536000000	USD
CY2013	us-gaap	Line Of Credit Facility Commitment Fee Percentage LineOfCreditFacilityCommitmentFeePercentage	0.0025
CY2013Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	5228000000	USD
CY2013Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	5214000000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	19274000000	USD
CY2013Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	21344000000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	2335000000	USD
CY2013Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	469000000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	10798000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	9823000000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	428000000	USD
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CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	250000000	USD
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CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1095000000	USD
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CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1360000000	USD
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CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	2375000000	USD
CY2013Q4	us-gaap	Long Term Investments LongTermInvestments	2348000000	USD
CY2012Q4	us-gaap	Long Term Investments LongTermInvestments	2189000000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	707000000	USD
CY2013Q4	us-gaap	Minority Interest MinorityInterest	756000000	USD
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CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-417000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-324000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5742000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5168000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4183000000	USD
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CY2013	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	66000000	USD
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CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2350000000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2203000000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1644000000	USD
CY2012Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	623000000	USD
CY2012Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	383000000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	368000000	USD
CY2013Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	81000000	USD
CY2013Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	852000000	USD
CY2013Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	414000000	USD
CY2013Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	297000000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	976000000	USD
CY2012Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	4322000000	USD
CY2013Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	2624000000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-696000000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-744000000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-714000000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	4231000000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	4463000000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	3255000000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1143000000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	640000000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1740000000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	325000000	USD
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1491000000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	799000000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	814000000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	766000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	451000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	101000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	31000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	44000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	65000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	75000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	135000000	USD
CY2013Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	707000000	USD
CY2013Q4	us-gaap	Other Assets Current OtherAssetsCurrent	39000000	USD
CY2012Q4	us-gaap	Other Assets Current OtherAssetsCurrent	74000000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	549000000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	551000000	USD
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	36000000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-3000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-2000000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-2000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-5000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-7000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-6000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	26000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	8000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	4000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	14000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-4000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-18000000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-12000000	USD
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	22000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-1000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	48000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-41000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-12000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-11000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-9000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-9000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-6000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-10000000	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	-7000000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-3000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-4000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2000000	USD
CY2012Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	1000000000	USD
CY2013Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	959000000	USD
CY2012Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	557000000	USD
CY2013Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	347000000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	668000000	USD
CY2013Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	584000000	USD
CY2012Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	3621000000	USD
CY2013Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	3503000000	USD
CY2013Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	12000000	USD
CY2012Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	227000000	USD
CY2012Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	216000000	USD
CY2013Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	218000000	USD
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-82000000	USD
CY2012	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	72000000	USD
CY2011	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	70000000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-61000000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1601000000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1762000000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1693000000	USD
CY2011	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	65000000	USD
CY2013	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	66000000	USD
CY2012	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	65000000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-38000000	USD
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-81000000	USD
CY2012	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	59000000	USD
CY2011	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	70000000	USD
CY2013	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	52000000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-33000000	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	127000000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-178000000	USD
CY2013	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	131000000	USD
CY2012	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	149000000	USD
CY2011	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	93000000	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	20000000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	430000000	USD
CY2012	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	5059000000	USD
CY2011	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	4853000000	USD
CY2013	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	5868000000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4525000000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5463000000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4809000000	USD
CY2012	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	1046000000	USD
CY2011	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	2195000000	USD
CY2013	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	986000000	USD
CY2013	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	131000000	USD
CY2011	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-45000000	USD
CY2012	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-398000000	USD
CY2013Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	1461000000	USD
CY2012Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	2540000000	USD
CY2013Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	489000000	USD
CY2012Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	657000000	USD
CY2013Q4	us-gaap	Prepaid Pension Costs PrepaidPensionCosts	419000000	USD
CY2012Q4	us-gaap	Prepaid Pension Costs PrepaidPensionCosts	0	USD
CY2013	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	984000000	USD
CY2011	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	2190000000	USD
CY2012	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	1043000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	397000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	723000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	695000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	50000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	397000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	222400000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-20000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	2938000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	4404000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	3719000000	USD
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	9000000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	19000000	USD
CY2011	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-438000000	USD
CY2013	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	662000000	USD
CY2012	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-30000000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	2268000000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	1710000000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	2415000000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	66021000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	63251000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	48390000000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	51208000000	USD
CY2012	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	143000000	USD
CY2011	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	153000000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	190000000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Amount Of Acquisition Adjustments1 PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1	124000000	USD
CY2013Q4	us-gaap	Public Utilities Property Plant And Equipment Amount Of Acquisition Adjustments1 PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1	123000000	USD
CY2013Q4	us-gaap	Public Utilities Property Plant And Equipment Distribution PublicUtilitiesPropertyPlantAndEquipmentDistribution	16499000000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Distribution PublicUtilitiesPropertyPlantAndEquipmentDistribution	15958000000	USD
CY2013Q4	us-gaap	Public Utilities Property Plant And Equipment Generation Or Processing PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing	35360000000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Generation Or Processing PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing	33444000000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	770000000	USD
CY2013Q4	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	792000000	USD
CY2013Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	66021000000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	63251000000	USD
CY2013Q4	us-gaap	Public Utilities Property Plant And Equipment Transmission PublicUtilitiesPropertyPlantAndEquipmentTransmission	9289000000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Transmission PublicUtilitiesPropertyPlantAndEquipmentTransmission	8747000000	USD
CY2012	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	3169000000	USD
CY2011	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	3170000000	USD
CY2013	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	2830000000	USD
CY2013Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	0	USD
CY2012Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	7000000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	9626000000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	9510000000	USD
CY2013	us-gaap	Revenues Revenues	17087000000	USD
CY2011	us-gaap	Revenues Revenues	17657000000	USD
CY2012	us-gaap	Revenues Revenues	16537000000	USD
CY2013Q3	us-gaap	Revenues Revenues	5017000000	USD
CY2012Q3	us-gaap	Revenues Revenues	5049000000	USD
CY2012Q1	us-gaap	Revenues Revenues	3604000000	USD
CY2013Q1	us-gaap	Revenues Revenues	3897000000	USD
CY2013Q4	us-gaap	Revenues Revenues	3927000000	USD
CY2012Q4	us-gaap	Revenues Revenues	3703000000	USD
CY2012Q2	us-gaap	Revenues Revenues	4181000000	USD
CY2013Q2	us-gaap	Revenues Revenues	4246000000	USD
CY2012Q4	us-gaap	Senior Notes SeniorNotes	17400000000	USD
CY2013Q4	us-gaap	Senior Notes SeniorNotes	17300000000	USD
CY2012Q4	us-gaap	Senior Notes Current SeniorNotesCurrent	2085000000	USD
CY2013Q4	us-gaap	Senior Notes Current SeniorNotesCurrent	428000000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.044
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.042
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.048
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CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.177
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CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.009
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.009
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CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	155000000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	162000000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	77000000	USD
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CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	147000000	USD
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	35916303	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	38819366	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	38.64
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CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	33.39
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	44.17
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2011	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2013Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	142000000	USD
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y
CY2012Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	825000000	USD
CY2013Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	1482000000	USD
CY2012Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.003
CY2013Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.004
CY2011	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	127000000	USD
CY2013	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	100000000	USD
CY2012	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	146000000	USD
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	6078735	shares
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	725000000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	397000000	USD
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	765000000	USD
CY2011	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	42000000	USD
CY2012	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	55000000	USD
CY2013	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	59000000	USD
CY2012	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	430000000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	19008000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	18297000000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	19004000000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	19764000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	16909000000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	18285000000	USD
CY2013	us-gaap	Stockholders Equity Other StockholdersEquityOther	0	USD
CY2011	us-gaap	Stockholders Equity Other StockholdersEquityOther	-1000000	USD
CY2012	us-gaap	Stockholders Equity Other StockholdersEquityOther	-1000000	USD
CY2013Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	28000000	USD
CY2011	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	901000000	USD
CY2013	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	934000000	USD
CY2012	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	914000000	USD
CY2012Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	375000000	USD
CY2013Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	375000000	USD
CY2012Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	10000000	shares
CY2013Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	5700000	shares
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	450000000	USD
CY2013Q4	us-gaap	Treasury Stock Value TreasuryStockValue	250000000	USD
CY2012Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	133000000	USD
CY2013Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	139000000	USD
CY2013Q4	us-gaap	Unamortized Loss Reacquired Debt Noncurrent UnamortizedLossReacquiredDebtNoncurrent	293000000	USD
CY2012Q4	us-gaap	Unamortized Loss Reacquired Debt Noncurrent UnamortizedLossReacquiredDebtNoncurrent	309000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	120000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	70000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	296000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	56000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	66000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	111000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	112000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	10000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	13000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	46000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	7000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	29000000	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
CY2011Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	10000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2013	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	5000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	4000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	5000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	69000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	7000000	USD
CY2013	us-gaap	Utilities Operating Expense Fuel Used UtilitiesOperatingExpenseFuelUsed	5510000000	USD
CY2011	us-gaap	Utilities Operating Expense Fuel Used UtilitiesOperatingExpenseFuelUsed	6262000000	USD
CY2012	us-gaap	Utilities Operating Expense Fuel Used UtilitiesOperatingExpenseFuelUsed	5057000000	USD
CY2012	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	3772000000	USD
CY2011	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	3938000000	USD
CY2013	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	3846000000	USD
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	881000000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	879000000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	864000000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	877000000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	857000000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	871000000	shares
CY2013	so	Additional Bonus Depreciation For Property Acquired AdditionalBonusDepreciationForPropertyAcquired	1
CY2011	so	Afudc Equity AfudcEquity	-0.015
CY2012	so	Afudc Equity AfudcEquity	-0.013
CY2013	so	Afudc Equity AfudcEquity	-0.026
CY2013	so	Aggregate Payment For Claims Resulting From Terrorist Acts In One Year Period AggregatePaymentForClaimsResultingFromTerroristActsInOneYearPeriod	3200000000	USD
CY2012	so	Allowance For Funds Used During Construction And Interest Capitalized Net Of Income Taxes AllowanceForFundsUsedDuringConstructionAndInterestCapitalizedNetOfIncomeTaxes	0.082
CY2011	so	Allowance For Funds Used During Construction And Interest Capitalized Net Of Income Taxes AllowanceForFundsUsedDuringConstructionAndInterestCapitalizedNetOfIncomeTaxes	0.091
CY2013	so	Allowance For Funds Used During Construction And Interest Capitalized Net Of Income Taxes AllowanceForFundsUsedDuringConstructionAndInterestCapitalizedNetOfIncomeTaxes	0.150
CY2011	so	Amortization Of Deferred Investment Tax Credits AmortizationOfDeferredInvestmentTaxCredits	19000000	USD
CY2013	so	Amortization Of Deferred Investment Tax Credits AmortizationOfDeferredInvestmentTaxCredits	16000000	USD
CY2012	so	Amortization Of Deferred Investment Tax Credits AmortizationOfDeferredInvestmentTaxCredits	23000000	USD
CY2013	so	Amortization Of Deferred Investment Tax Credits Income Tax Expense AmortizationOfDeferredInvestmentTaxCreditsIncomeTaxExpense	5500000	USD
CY2012	so	Amortization Of Deferred Investment Tax Credits Income Tax Expense AmortizationOfDeferredInvestmentTaxCreditsIncomeTaxExpense	2600000	USD
CY2013	so	Amortization Of Regulatory Asset Vacation Pay AmortizationOfRegulatoryAssetVacationPay	P1Y
CY2012Q2	so	Amount Of Insurance Claim Received In Respect Of Litigation Settlement AmountOfInsuranceClaimReceivedInRespectOfLitigationSettlement	25000000	USD
CY2013Q4	so	Amount Of Insurance Claim Received In Respect Of Litigation Settlement AmountOfInsuranceClaimReceivedInRespectOfLitigationSettlement	15000000	USD
CY2013Q4	so	Amount Of Variable Rate Pollution Control Revenue Bonds Outstanding Requiring Liquidity Support AmountOfVariableRatePollutionControlRevenueBondsOutstandingRequiringLiquiditySupport	1800000000	USD
CY2013Q4	so	Annual Dividend Preferred And Preference Stock AnnualDividendPreferredAndPreferenceStock	48000000	USD
CY2013	so	Annual Increase Or Decrease In Assumed Medical Care Cost Trend Rate AnnualIncreaseOrDecreaseInAssumedMedicalCareCostTrendRate	0.01
CY2013Q4	so	Annualized Interest Long Term Debt AnnualizedInterestLongTermDebt	805000000	USD
CY2013Q4	so	Bank Credit Arrangements No Term Loan Due With In One Year BankCreditArrangementsNoTermLoanDueWithInOneYear	370000000	USD
CY2013Q4	so	Bank Credit Arrangements Term Loan Due With In One Year BankCreditArrangementsTermLoanDueWithInOneYear	188000000	USD
CY2013	so	Block Period Considered For Inflation Adjustment Against Maximum Assessment Per Reactor BlockPeriodConsideredForInflationAdjustmentAgainstMaximumAssessmentPerReactor	P5Y
CY2013	so	Bonus Depreciation For Property Acquired BonusDepreciationForPropertyAcquired	0.5
CY2012Q4	so	Capitalization In Percent CapitalizationInPercent	1
CY2013Q4	so	Capitalization In Percent CapitalizationInPercent	1
CY2013	so	Change In Construction Payables ChangeInConstructionPayables	-126000000	USD
CY2012	so	Change In Construction Payables ChangeInConstructionPayables	-84000000	USD
CY2011	so	Change In Construction Payables ChangeInConstructionPayables	198000000	USD
CY2013	so	Civil Penalties Under Clean Air Act Per Day Lower Range Limit CivilPenaltiesUnderCleanAirActPerDayLowerRangeLimit	25000	USD
CY2013	so	Civil Penalties Under Clean Air Act Per Day Upper Range Limit CivilPenaltiesUnderCleanAirActPerDayUpperRangeLimit	37500	USD
	so	Common Stock Fees And Commissions CommonStockFeesAndCommissions	2800000	USD
	so	Common Stock Issued Through At The Market Issuances Amount CommonStockIssuedThroughAtTheMarketIssuancesAmount	327300000	USD
	so	Common Stock Previously Held In Treasury Amount CommonStockPreviouslyHeldInTreasuryAmount	183600000	USD
	so	Common Stock Shares Issued Previously Held In Treasury CommonStockSharesIssuedPreviouslyHeldInTreasury	4400000	shares
	so	Common Stock Shares Issued Through At The Market Issuances CommonStockSharesIssuedThroughAtTheMarketIssuances	8000000	shares
CY2013Q4	so	Common Stockholders Equity In Percent Of Capitalization CommonStockholdersEquityInPercentOfCapitalization	0.458
CY2012Q4	so	Common Stockholders Equity In Percent Of Capitalization CommonStockholdersEquityInPercentOfCapitalization	0.473
CY2012Q4	so	Deferred Charges And Other Assets DeferredChargesAndOtherAssets	6408000000	USD
CY2013Q4	so	Deferred Charges And Other Assets DeferredChargesAndOtherAssets	5391000000	USD
CY2013Q4	so	Deferred Charges Related To Income Taxes DeferredChargesRelatedToIncomeTaxes	1432000000	USD
CY2012Q4	so	Deferred Charges Related To Income Taxes DeferredChargesRelatedToIncomeTaxes	1385000000	USD
CY2012Q4	so	Deferred Credits Related To Income Taxes DeferredCreditsRelatedToIncomeTaxes	211000000	USD
CY2013Q4	so	Deferred Credits Related To Income Taxes DeferredCreditsRelatedToIncomeTaxes	202000000	USD
CY2011	so	Depreciation And Amortization Excluding Nuclear Fuel DepreciationAndAmortizationExcludingNuclearFuel	1717000000	USD
CY2013	so	Depreciation And Amortization Excluding Nuclear Fuel DepreciationAndAmortizationExcludingNuclearFuel	1901000000	USD
CY2012	so	Depreciation And Amortization Excluding Nuclear Fuel DepreciationAndAmortizationExcludingNuclearFuel	1787000000	USD
CY2013	so	Estimated Loss On Integrated Coal Gasification Combined Cycle Project EstimatedLossOnIntegratedCoalGasificationCombinedCycleProject	1180000000	USD
CY2011	so	Estimated Loss On Integrated Coal Gasification Combined Cycle Project EstimatedLossOnIntegratedCoalGasificationCombinedCycleProject	0	USD
CY2012	so	Estimated Loss On Integrated Coal Gasification Combined Cycle Project EstimatedLossOnIntegratedCoalGasificationCombinedCycleProject	0	USD
CY2013Q4	so	Executable Term Loans For One Year ExecutableTermLoansForOneYear	148000000	USD
CY2013Q4	so	Executable Term Loans For Two Years ExecutableTermLoansForTwoYears	40000000	USD
CY2013	so	Expected Volume Of Natural Gas Subject To Option To Sell Back Excess Gas Due To Operational Constraints ExpectedVolumeOfNaturalGasSubjectToOptionToSellBackExcessGasDueToOperationalConstraints	9000000	MMBTU
CY2012	so	Expense Under Purchase Power Agreements Accounted For As Operating Leases ExpenseUnderPurchasePowerAgreementsAccountedForAsOperatingLeases	171000000	USD
CY2011	so	Expense Under Purchase Power Agreements Accounted For As Operating Leases ExpenseUnderPurchasePowerAgreementsAccountedForAsOperatingLeases	199000000	USD
CY2013	so	Expense Under Purchase Power Agreements Accounted For As Operating Leases ExpenseUnderPurchasePowerAgreementsAccountedForAsOperatingLeases	157000000	USD
CY2013Q4	so	Fair Value Of Derivative Liabilities With Contingent Features FairValueOfDerivativeLiabilitiesWithContingentFeatures	9000000	USD
CY2011	so	Increase Decrease In Accrued Taxes IncreaseDecreaseInAccruedTaxes	330000000	USD
CY2013	so	Increase Decrease In Accrued Taxes IncreaseDecreaseInAccruedTaxes	-85000000	USD
CY2012	so	Increase Decrease In Accrued Taxes IncreaseDecreaseInAccruedTaxes	-71000000	USD
CY2011	so	Increase Decrease In Fair Value Of Securities Related To Nuclear Decommissioning IncreaseDecreaseInFairValueOfSecuritiesRelatedToNuclearDecommissioning	29000000	USD
CY2013	so	Increase Decrease In Fair Value Of Securities Related To Nuclear Decommissioning IncreaseDecreaseInFairValueOfSecuritiesRelatedToNuclearDecommissioning	181000000	USD
CY2012	so	Increase Decrease In Fair Value Of Securities Related To Nuclear Decommissioning IncreaseDecreaseInFairValueOfSecuritiesRelatedToNuclearDecommissioning	137000000	USD
CY2011	so	Increase Decrease Retail Fuel Cost Over Recovery Short Term IncreaseDecreaseRetailFuelCostOverRecoveryShortTerm	3000000	USD
CY2013	so	Increase Decrease Retail Fuel Cost Over Recovery Short Term IncreaseDecreaseRetailFuelCostOverRecoveryShortTerm	66000000	USD
CY2012	so	Increase Decrease Retail Fuel Cost Over Recovery Short Term IncreaseDecreaseRetailFuelCostOverRecoveryShortTerm	-129000000	USD
CY2011	so	Interest Bearing Refundable Deposit Related To Asset Sale InterestBearingRefundableDepositRelatedToAssetSale	0	USD
CY2012	so	Interest Bearing Refundable Deposit Related To Asset Sale InterestBearingRefundableDepositRelatedToAssetSale	150000000	USD
CY2013	so	Interest Bearing Refundable Deposit Related To Asset Sale InterestBearingRefundableDepositRelatedToAssetSale	0	USD
CY2012Q4	so	Interest Bearing Refundable Deposit Related To Assets Sale InterestBearingRefundableDepositRelatedToAssetsSale	150000000	USD
CY2013Q4	so	Interest Bearing Refundable Deposit Related To Assets Sale InterestBearingRefundableDepositRelatedToAssetsSale	150000000	USD
CY2012	so	Interest Reclassified Due To Settlements InterestReclassifiedDueToSettlements	9000000	USD
CY2013	so	Interest Reclassified Due To Settlements InterestReclassifiedDueToSettlements	0	USD
CY2011	so	Interest Reclassified Due To Settlements InterestReclassifiedDueToSettlements	24000000	USD
CY2012Q4	so	Legal Fee Related To Insurance Recoveries LegalFeeRelatedToInsuranceRecoveries	6000000	USD
CY2013Q4	so	Legal Fee Related To Insurance Recoveries LegalFeeRelatedToInsuranceRecoveries	4000000	USD
CY2013Q4	so	Line Of Credit Expire Year Five And Thereafter LineOfCreditExpireYearFiveAndThereafter	4130000000	USD
CY2013Q4	so	Line Of Credit Expire Year One LineOfCreditExpireYearOne	558000000	USD
CY2013Q4	so	Line Of Credit Expire Year Three LineOfCreditExpireYearThree	480000000	USD
CY2013Q4	so	Line Of Credit Expire Year Two LineOfCreditExpireYearTwo	60000000	USD
CY2013Q4	so	Long Term Debt And Capital Lease Obligation Maturities Re Payments In Next Twelve Months LongTermDebtAndCapitalLeaseObligationMaturitiesRePaymentsInNextTwelveMonths	469000000	USD
CY2012Q4	so	Long Term Debt And Capital Lease Obligation Net LongTermDebtAndCapitalLeaseObligationNet	21609000000	USD
CY2013Q4	so	Long Term Debt And Capital Lease Obligation Net LongTermDebtAndCapitalLeaseObligationNet	21813000000	USD
CY2013Q4	so	Long Term Debt And Capital Lease Obligations In Percent Of Capitalization LongTermDebtAndCapitalLeaseObligationsInPercentOfCapitalization	0.515
CY2012Q4	so	Long Term Debt And Capital Lease Obligations In Percent Of Capitalization LongTermDebtAndCapitalLeaseObligationsInPercentOfCapitalization	0.499
CY2013Q4	so	Long Term Debt Maturities Repayments Of Principal In Last Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInLastTwelveMonths	0	USD
CY2012Q4	so	Long Term Debt Maturities Repayments Of Principal In Last Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInLastTwelveMonths	1436000000	USD
CY2013Q4	so	Long Term Debtand Capital Lease Obligation Maturities Repaymentsin Year Five LongTermDebtandCapitalLeaseObligationMaturitiesRepaymentsinYearFive	880000000	USD
CY2013Q4	so	Long Term Debtand Capital Lease Obligation Maturities Repaymentsin Year Four LongTermDebtandCapitalLeaseObligationMaturitiesRepaymentsinYearFour	1140000000	USD
CY2013Q4	so	Long Term Debtand Capital Lease Obligation Maturities Repaymentsin Year Three LongTermDebtandCapitalLeaseObligationMaturitiesRepaymentsinYearThree	1830000000	USD
CY2013Q4	so	Long Term Debtand Capital Lease Obligation Maturities Repaymentsin Year Two LongTermDebtandCapitalLeaseObligationMaturitiesRepaymentsinYearTwo	2970000000	USD
CY2013Q4	so	Long Term Senior Notes And Debt LongTermSeniorNotesAndDebt	17892000000	USD
CY2012Q4	so	Long Term Senior Notes And Debt LongTermSeniorNotesAndDebt	17649000000	USD
CY2013	so	Maximum Aggregate Amount For Each Incident MaximumAggregateAmountForEachIncident	19000000	USD
CY2013	so	Maximum Amount For Each Licensed Reactor MaximumAmountForEachLicensedReactor	127000000	USD
CY2013	so	Maximum Coverage Per Occurrence Per Unit Limit To Obtain Replacement Power MaximumCoveragePerOccurrencePerUnitLimitToObtainReplacementPower	490000000	USD
CY2013	so	Maximum Deductible Waiting Period MaximumDeductibleWaitingPeriod	26 weeks
CY2013	so	Maximum Fund Provided For Public Liability Claims MaximumFundProvidedForPublicLiabilityClaims	13600000000	USD
CY2013	so	Maximum Insurance Coverage MaximumInsuranceCoverage	375000000	USD
CY2013	so	Maximum Limit Per Occurrence Period Limit Exhausted MaximumLimitPerOccurrencePeriodLimitExhausted	P3Y
CY2013	so	Maximum Number Of Days Related To Dollar Weighted Average Portfolio Maturities Regarding Commingled Funds MaximumNumberOfDaysRelatedToDollarWeightedAveragePortfolioMaturitiesRegardingCommingledFunds	P90D
CY2013	so	Maximum Number Of Months Related To Maturities In Portfolio Not To Exceeded From Date Of Purchase MaximumNumberOfMonthsRelatedToMaturitiesInPortfolioNotToExceededFromDateOfPurchase	P13M
CY2013	so	Maximum Percentage Of Transfer Performance Shares To Common Stock Based On Actual Shareholder Return MaximumPercentageOfTransferPerformanceSharesToCommonStockBasedOnActualShareholderReturn	2
CY2013	so	Maximum Percentage Of Uncollectible Accounts MaximumPercentageOfUncollectibleAccounts	0.01
CY2013Q4	so	Maximum Potential Collateral Requirements Arising From Credit Risk Related Contingent Features MaximumPotentialCollateralRequirementsArisingFromCreditRiskRelatedContingentFeatures	9000000	USD
CY2013	so	Maximum Revenue From Single Customer Or Industry MaximumRevenueFromSingleCustomerOrIndustry	0.1
CY2013	so	Minimum Net Worth Requirement By One Or More Persons To Hold External Trust Funds MinimumNetWorthRequirementByOneOrMorePersonsToHoldExternalTrustFunds	100000000	USD
CY2013	so	Minimum Percentage Of Transfer Performance Shares To Common Stock Based On Actual Shareholder Return MinimumPercentageOfTransferPerformanceSharesToCommonStockBasedOnActualShareholderReturn	0
CY2012Q4	so	Minority Interest In Percent Of Capitalization MinorityInterestInPercentOfCapitalization	0.018
CY2013Q4	so	Minority Interest In Percent Of Capitalization MinorityInterestInPercentOfCapitalization	0.018
CY2013Q4	so	Net Amount Received Of Insurance Claim In Respect Of Litigation Settlement NetAmountReceivedOfInsuranceClaimInRespectOfLitigationSettlement	11000000	USD
CY2012Q4	so	Net Amount Received Of Insurance Claim In Respect Of Litigation Settlement NetAmountReceivedOfInsuranceClaimInRespectOfLitigationSettlement	19000000	USD
CY2011	so	Noncash Property Additions Recognized NoncashPropertyAdditionsRecognized	929000000	USD
CY2013	so	Noncash Property Additions Recognized NoncashPropertyAdditionsRecognized	411000000	USD
CY2012	so	Noncash Property Additions Recognized NoncashPropertyAdditionsRecognized	524000000	USD
CY2012Q4	so	Nuclear Fuel At Amortized Cost NuclearFuelAtAmortizedCost	851000000	USD
CY2013Q4	so	Nuclear Fuel At Amortized Cost NuclearFuelAtAmortizedCost	855000000	USD
CY2013Q4	so	Number Of Employees Participating In Stock Option Plan NumberOfEmployeesParticipatingInStockOptionPlan	5776	Employee
CY2013Q4	so	Number Of Traditional Operating Companies NumberOfTraditionalOperatingCompanies	4
CY2013	so	Original Maturitiesof Temporary Cash Investments OriginalMaturitiesofTemporaryCashInvestments	P90D
CY2012Q4	so	Other Accounts Notes And Loans Receivable OtherAccountsNotesAndLoansReceivable	235000000	USD
CY2013Q4	so	Other Accounts Notes And Loans Receivable OtherAccountsNotesAndLoansReceivable	304000000	USD
CY2012Q4	so	Other Cost Of Removal Obligations OtherCostOfRemovalObligations	1194000000	USD
CY2013Q4	so	Other Cost Of Removal Obligations OtherCostOfRemovalObligations	1270000000	USD
CY2011	so	Other Electric Revenues OtherElectricRevenues	611000000	USD
CY2012	so	Other Electric Revenues OtherElectricRevenues	616000000	USD
CY2013	so	Other Electric Revenues OtherElectricRevenues	639000000	USD
CY2013Q4	so	Other Regulatory Assets Current OtherRegulatoryAssetsCurrent	124000000	USD
CY2012Q4	so	Other Regulatory Assets Current OtherRegulatoryAssetsCurrent	163000000	USD
CY2013Q4	so	Other Regulatory Assets Deferred OtherRegulatoryAssetsDeferred	2557000000	USD
CY2012Q4	so	Other Regulatory Assets Deferred OtherRegulatoryAssetsDeferred	4032000000	USD
CY2012Q4	so	Other Regulatory Liabilities Current OtherRegulatoryLiabilitiesCurrent	107000000	USD
CY2013Q4	so	Other Regulatory Liabilities Current OtherRegulatoryLiabilitiesCurrent	92000000	USD
CY2012Q4	so	Other Regulatory Liabilities Deferred OtherRegulatoryLiabilitiesDeferred	289000000	USD
CY2013Q4	so	Other Regulatory Liabilities Deferred OtherRegulatoryLiabilitiesDeferred	475000000	USD
CY2013Q4	so	Other Utility Plant Net OtherUtilityPlantNet	240000000	USD
CY2012Q4	so	Other Utility Plant Net OtherUtilityPlantNet	263000000	USD
CY2011	so	Payments For Investment In Restricted Cash PaymentsForInvestmentInRestrictedCash	-1000000	USD
CY2013	so	Payments For Investment In Restricted Cash PaymentsForInvestmentInRestrictedCash	149000000	USD
CY2012Q4	so	Vacation Pay VacationPay	165000000	USD
CY2012	so	Wholesale Revenues WholesaleRevenues	1675000000	USD
CY2013	so	Wholesale Revenues WholesaleRevenues	1855000000	USD
CY2011	so	Wholesale Revenues WholesaleRevenues	1905000000	USD
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013Q4	so	Temporary Equity Carrying Amount In Percent Of Capitalization TemporaryEquityCarryingAmountInPercentOfCapitalization	0.009
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013Q3	so	Trading Price Range Per Common Share High TradingPriceRangePerCommonShareHigh	45.75
CY2012Q2	so	Trading Price Range Per Common Share High TradingPriceRangePerCommonShareHigh	48.45
CY2013Q2	so	Trading Price Range Per Common Share High TradingPriceRangePerCommonShareHigh	48.74
CY2012Q1	so	Trading Price Range Per Common Share High TradingPriceRangePerCommonShareHigh	46.06
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2012	so	Payments For Investment In Restricted Cash PaymentsForInvestmentInRestrictedCash	280000000	USD
CY2013	so	Period Over Which Company Has Elected To Amortize Changes In Market Value Of All Plan Assets PeriodOverWhichCompanyHasElectedToAmortizeChangesInMarketValueOfAllPlanAssets	P5Y
CY2012Q4	so	Plant In Service Net Of Depreciation PlantInServiceNetOfDepreciation	41287000000	USD
CY2013Q4	so	Plant In Service Net Of Depreciation PlantInServiceNetOfDepreciation	42962000000	USD
CY2012Q4	so	Portion Included In Current Tax Liabilities Current Tax Assets Net PortionIncludedInCurrentTaxLiabilitiesCurrentTaxAssetsNet	237000000	USD
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013Q4	so	Trading Price Range Per Common Share High TradingPriceRangePerCommonShareHigh	42.94
CY2011	so	Proceeds From Distribution Of Restricted Cash ProceedsFromDistributionOfRestrictedCash	63000000	USD
CY2012	so	Proceeds From Distribution Of Restricted Cash ProceedsFromDistributionOfRestrictedCash	284000000	USD
CY2013	so	Proceeds From Distribution Of Restricted Cash ProceedsFromDistributionOfRestrictedCash	96000000	USD
CY2011	so	Proceeds From Sale Of Securities Held In External Trust Funds ProceedsFromSaleOfSecuritiesHeldInExternalTrustFunds	2200000000	USD
CY2013	so	Proceeds From Sale Of Securities Held In External Trust Funds ProceedsFromSaleOfSecuritiesHeldInExternalTrustFunds	1000000000	USD
CY2012	so	Proceeds From Sale Of Securities Held In External Trust Funds ProceedsFromSaleOfSecuritiesHeldInExternalTrustFunds	1000000000	USD
CY2012Q4	so	Public Utilities Property Plant And Equipment Communications Equipment PublicUtilitiesPropertyPlantAndEquipmentCommunicationsEquipment	430000000	USD
CY2013Q4	so	Public Utilities Property Plant And Equipment Communications Equipment PublicUtilitiesPropertyPlantAndEquipmentCommunicationsEquipment	437000000	USD
CY2012Q4	so	Public Utilities Property Plant And Equipment General PublicUtilitiesPropertyPlantAndEquipmentGeneral	4208000000	USD
CY2013Q4	so	Public Utilities Property Plant And Equipment General PublicUtilitiesPropertyPlantAndEquipmentGeneral	3958000000	USD
CY2013Q4	so	Public Utilities Property Plant And Equipment It Equipment And Software PublicUtilitiesPropertyPlantAndEquipmentItEquipmentAndSoftware	242000000	USD
CY2012Q4	so	Public Utilities Property Plant And Equipment It Equipment And Software PublicUtilitiesPropertyPlantAndEquipmentItEquipmentAndSoftware	230000000	USD
CY2013Q4	so	Public Utilities Property Plant And Equipment Other PublicUtilitiesPropertyPlantAndEquipmentOther	113000000	USD
CY2012Q4	so	Public Utilities Property Plant And Equipment Other PublicUtilitiesPropertyPlantAndEquipmentOther	110000000	USD
CY2013Q4	so	Ratio Of Indebtedness To Capitalization Covenant RatioOfIndebtednessToCapitalizationCovenant	0.65
CY2012Q4	so	Regulatory Hedge Unrealized Gain RegulatoryHedgeUnrealizedGain	23000000	USD
CY2013Q4	so	Regulatory Hedge Unrealized Gain RegulatoryHedgeUnrealizedGain	23000000	USD
CY2012Q4	so	Regulatory Hedge Unrealized Loss RegulatoryHedgeUnrealizedLoss	109000000	USD
CY2013Q4	so	Regulatory Hedge Unrealized Loss RegulatoryHedgeUnrealizedLoss	55000000	USD
CY2013	so	Remarketed Pollution Control Bonds RemarketedPollutionControlBonds	442000000	USD
CY2011	so	Retail Fuel Cost Over Recovery Long Term RetailFuelCostOverRecoveryLongTerm	0	USD
CY2013	so	Retail Fuel Cost Over Recovery Long Term RetailFuelCostOverRecoveryLongTerm	-123000000	USD
CY2012	so	Retail Fuel Cost Over Recovery Long Term RetailFuelCostOverRecoveryLongTerm	123000000	USD
CY2013	so	Retail Revenues RetailRevenues	14541000000	USD
CY2011	so	Retail Revenues RetailRevenues	15071000000	USD
CY2012	so	Retail Revenues RetailRevenues	14187000000	USD
CY2012Q3	so	Trading Price Range Per Common Share High TradingPriceRangePerCommonShareHigh	48.59
CY2012Q4	so	Trading Price Range Per Common Share High TradingPriceRangePerCommonShareHigh	47.09
CY2013Q1	so	Trading Price Range Per Common Share High TradingPriceRangePerCommonShareHigh	46.95
CY2013Q1	so	Trading Price Range Per Common Share Low TradingPriceRangePerCommonShareLow	42.82
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0000092122
CY2012Q2	so	Trading Price Range Per Common Share Low TradingPriceRangePerCommonShareLow	44.22
CY2012Q4	so	Trading Price Range Per Common Share Low TradingPriceRangePerCommonShareLow	41.75
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	887940630	shares
CY2012Q1	so	Trading Price Range Per Common Share Low TradingPriceRangePerCommonShareLow	43.71
CY2013Q2	so	Trading Price Range Per Common Share Low TradingPriceRangePerCommonShareLow	42.32
CY2012Q3	so	Trading Price Range Per Common Share Low TradingPriceRangePerCommonShareLow	44.64
CY2013	so	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageGrantDateFairValue	2.93	USD
CY2012	so	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageGrantDateFairValue	3.39	USD
CY2011	so	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageGrantDateFairValue	3.23	USD
CY2013	so	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Reserved For Issuance Pursuant To Stock Based Compensation Plan ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesReservedForIssuancePursuantToStockBasedCompensationPlan	116000000	shares
CY2013Q4	so	Short Term Borrowings Excluding Other Energy Service Contracts ShortTermBorrowingsExcludingOtherEnergyServiceContracts	1482000000	USD
CY2012Q4	so	Short Term Borrowings Excluding Other Energy Service Contracts ShortTermBorrowingsExcludingOtherEnergyServiceContracts	820000000	USD
CY2013	so	State Investment Tax Credit StateInvestmentTaxCredit	118000000	USD
CY2012	so	Stock Issued During Period Shares Company Investment Plan And Employee And Director Stock Plans StockIssuedDuringPeriodSharesCompanyInvestmentPlanAndEmployeeAndDirectorStockPlans	12100000	shares
CY2013	so	Stock Issued During Period Shares Company Investment Plan And Employee And Director Stock Plans StockIssuedDuringPeriodSharesCompanyInvestmentPlanAndEmployeeAndDirectorStockPlans	6900000	shares
CY2013Q4	so	Tax Positions Not Impacting Effective Tax Rate TaxPositionsNotImpactingEffectiveTaxRate	0	USD
CY2011Q4	so	Tax Positions Not Impacting Effective Tax Rate TaxPositionsNotImpactingEffectiveTaxRate	51000000	USD
CY2012Q4	so	Tax Positions Not Impacting Effective Tax Rate TaxPositionsNotImpactingEffectiveTaxRate	65000000	USD
CY2012Q4	so	Temporary Equity Carrying Amount In Percent Of Capitalization TemporaryEquityCarryingAmountInPercentOfCapitalization	0.010
CY2013Q3	so	Trading Price Range Per Common Share Low TradingPriceRangePerCommonShareLow	40.63
CY2013Q4	so	Trading Price Range Per Common Share Low TradingPriceRangePerCommonShareLow	40.03
CY2012Q4	so	Unbilled Revenues Current UnbilledRevenuesCurrent	441000000	USD
CY2013Q4	so	Unbilled Revenues Current UnbilledRevenuesCurrent	448000000	USD
CY2013Q4	so	Under Recovered Regulatory Clause Revenues UnderRecoveredRegulatoryClauseRevenues	58000000	USD
CY2012Q4	so	Under Recovered Regulatory Clause Revenues UnderRecoveredRegulatoryClauseRevenues	29000000	USD
CY2013	so	Undistributed Retained Earnings Of Subsidiaries UndistributedRetainedEarningsOfSubsidiaries	6100000000	USD
CY2012Q4	so	Utility Plant In Service UtilityPlantInService	62481000000	USD
CY2013Q4	so	Utility Plant In Service UtilityPlantInService	65229000000	USD
CY2013Q4	so	Vacation Pay VacationPay	171000000	USD
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q2	dei	Entity Public Float EntityPublicFloat	38600000000	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	SOUTHERN CO
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes

Files In Submission

Name	View Source	Status
0000092122-14-000012-index-headers.html	Edgar Link	pending
0000092122-14-000012-index.html	Edgar Link	pending
0000092122-14-000012.txt	Edgar Link	pending
0000092122-14-000012-xbrl.zip	Edgar Link	pending
apcoletterhead.jpg	Edgar Link	pending
comporgchart.jpg	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
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so-20131231.xml	Edgar Link	completed
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so-20131231_cal.xml	Edgar Link	unprocessable
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$SO
SOUTHERN CO Stock $so

2012 Q4 Form 10-K Financial Statement

#000009212214000012 Filed on February 27, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SO SOUTHERN CO Stock $so

2012 Q4 Form 10-K Financial Statement

#000009212214000012 Filed on February 27, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SO
SOUTHERN CO Stock $so