$AEP
AMERICAN ELECTRIC POWER CO INC Stock $aep

$aep Overview Financials Valuation SEC Filings Company Website

2011 Q1 Form 10-Q Financial Statement

#000000490411000074 Filed on May 03, 2011

Income Statement

Concept	2011 Q1	2010 Q4	2010 Q1
Revenue	$3.730B	$3.434B	$3.569B
YoY Change	4.51%	4.63%	3.21%
Cost Of Revenue	$275.0M	$288.0M	$238.0M
YoY Change	15.55%	13.83%	-19.32%
Gross Profit	$3.455B	$3.146B	$3.331B
YoY Change	3.72%	3.86%	5.31%
Gross Profit Margin	92.63%	91.61%	93.33%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$403.0M	$404.0M	$408.0M
YoY Change	-1.23%	1.76%	6.81%
% of Gross Profit	11.66%	12.84%	12.25%
Operating Expenses	$2.898B	$2.660B	$2.811B
YoY Change	3.09%	4.4%	16.06%
Operating Profit	$832.0M	$486.0M	$758.0M
YoY Change	9.76%	1.04%	1.07%
Interest Expense	$242.0M	-$218.0M	$250.0M
YoY Change	-3.2%	0.0%	-215.21%
% of Operating Profit	29.09%	-44.86%	32.98%
Other Income/Expense, Net	$15.00M	$19.00M	$14.00M
YoY Change	7.14%	35.71%	55.56%
Pretax Income	$627.0M	$287.0M	$549.0M
YoY Change	14.21%	3.61%	1.29%
Income Tax	$278.0M	$113.0M	$207.0M
% Of Pretax Income	44.34%	39.37%	37.7%
Net Earnings	$354.0M	$178.0M	$345.0M
YoY Change	2.61%	-25.52%	-4.96%
Net Earnings / Revenue	9.49%	5.18%	9.67%
Basic Earnings Per Share	$0.73	$0.37	$0.72
Diluted Earnings Per Share	$0.73	$0.37	$0.72
COMMON SHARES
Basic Shares Outstanding	481.1M shares	480.8M shares	478.4M shares
Diluted Shares Outstanding	481.4M shares		478.8M shares

Balance Sheet

Concept	2011 Q1	2010 Q4	2010 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$921.0M	$710.0M	$1.056B
YoY Change	-12.78%	-16.76%	14.16%
Cash & Equivalents	$625.0M	$294.0M	$818.0M
Short-Term Investments	$296.0M	$416.0M	$238.0M
Other Short-Term Assets	$157.0M	$145.0M	$894.0M
YoY Change	-82.44%	-31.28%	-32.22%
Inventory	$1.328B	$1.448B	$1.566B
Prepaid Expenses
Receivables	$1.749B	$1.923B	$1.442B
Other Receivables	$407.0M	$526.0M	$558.0M
Total Short-Term Assets	$4.789B	$5.016B	$5.516B
YoY Change	-13.18%	5.47%	33.95%
LONG-TERM ASSETS
Property, Plant & Equipment	$35.77B	$35.67B	$34.53B
YoY Change	3.59%	3.87%	3.83%
Goodwill	$76.00M	$76.00M
YoY Change		0.0%
Intangibles
YoY Change
Long-Term Investments		$160.0M
YoY Change
Other Assets	$1.347B	$1.079B	$9.507B
YoY Change	-85.83%	14.06%	12.91%
Total Long-Term Assets	$10.01B	$9.765B	$44.11B
YoY Change	-77.32%	5.59%	5.66%
TOTAL ASSETS
Total Short-Term Assets	$4.789B	$5.016B	$5.516B
Total Long-Term Assets	$10.01B	$9.765B	$44.11B
Total Assets	$50.56B	$50.46B	$49.63B
YoY Change	1.88%	4.36%	8.2%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$884.0M	$1.061B	$954.0M
YoY Change	-7.34%	-8.38%	-15.28%
Accrued Expenses	$248.0M	$281.0M	$254.0M
YoY Change	-2.36%	-2.09%	12.39%
Deferred Revenue
YoY Change
Short-Term Debt	$1.433B	$1.346B	$1.063B
YoY Change	34.81%	968.25%	-46.2%
Long-Term Debt Due	$1.421B	$1.309B	$1.253B
YoY Change	13.41%	-24.81%	33.44%
Total Short-Term Liabilities	$5.989B	$6.518B	$5.515B
YoY Change	8.59%	22.36%	-13.98%
LONG-TERM LIABILITIES
Long-Term Debt	$15.63B	$15.50B	$16.28B
YoY Change	-3.99%	-1.62%	2.37%
Other Long-Term Liabilities	$993.0M	$795.0M	$4.852B
YoY Change	-79.53%	-31.64%	4.93%
Total Long-Term Liabilities	$30.73B	$30.26B	$21.13B
YoY Change	45.42%	1.46%	2.95%
TOTAL LIABILITIES
Total Short-Term Liabilities	$5.989B	$6.518B	$5.515B
Total Long-Term Liabilities	$30.73B	$30.26B	$21.13B
Total Liabilities	$36.72B	$36.77B	$36.24B
YoY Change	1.33%	4.63%	3.95%
SHAREHOLDERS EQUITY
Retained Earnings	$4.973B	$4.842B
YoY Change		8.78%
Common Stock	$3.263B	$3.257B
YoY Change		0.56%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares	20.31M shares	20.31M shares
Shareholders Equity	$13.78B	$13.62B	$13.39B
YoY Change
Total Liabilities & Shareholders Equity	$50.56B	$50.46B	$49.63B
YoY Change	1.88%	4.36%	8.2%

Cashflow Statement

Concept	2011 Q1	2010 Q4	2010 Q1
OPERATING ACTIVITIES
Net Income	$354.0M	$178.0M	$345.0M
YoY Change	2.61%	-25.52%	-4.96%
Depreciation, Depletion And Amortization	$403.0M	$404.0M	$408.0M
YoY Change	-1.23%	1.76%	6.81%
Cash From Operating Activities	$830.0M	$960.0M	$2.000M
YoY Change	41400.0%	58.94%	-99.37%
INVESTING ACTIVITIES
Capital Expenditures	$2.000M	-$738.0M	-$647.0M
YoY Change	-100.31%	7.74%	-33.5%
Acquisitions
YoY Change
Other Investing Activities	$2.000M	-$210.0M	$32.00M
YoY Change	-93.75%	56.72%	-86.99%
Cash From Investing Activities	-$613.0M	-$948.0M	-$430.0M
YoY Change	42.56%	15.75%	-40.85%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$31.00M		$26.00M
YoY Change	19.23%
Debt Paid & Issued, Net	$777.0M		$638.0M
YoY Change	21.79%
Cash From Financing Activities	$114.0M	-808.0M	$756.0M
YoY Change	-84.92%	369.77%	6.63%
NET CHANGE
Cash From Operating Activities	$830.0M	960.0M	$2.000M
Cash From Investing Activities	-$613.0M	-948.0M	-$430.0M
Cash From Financing Activities	$114.0M	-808.0M	$756.0M
Net Change In Cash	$331.0M	-796.0M	$328.0M
YoY Change	0.91%	105.68%	9.7%
FREE CASH FLOW
Cash From Operating Activities	$830.0M	$960.0M	$2.000M
Capital Expenditures	$2.000M	-$738.0M	-$647.0M
Free Cash Flow	$828.0M	$1.698B	$649.0M
YoY Change	27.58%	31.73%	-49.69%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2011Q1	dei	Document Period End Date DocumentPeriodEndDate	2011-03-31
CY2011Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2011Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2011Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	481790955000000	shares
CY2011Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2011
CY2011Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2011Q1	dei	Document Type DocumentType	10-Q
CY2011Q1	dei	Entity Registrant Name EntityRegistrantName	AMERICAN ELECTRIC POWER CO INC
CY2011Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000004904
CY2011Q1	dei	Amendment Flag AmendmentFlag	false
CY2011Q1	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	3497000000	USD
CY2010Q1	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	3406000000	USD
CY2011Q1	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	233000000	USD
CY2010Q1	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	163000000	USD
CY2011Q1	us-gaap	Revenues Revenues	3730000000	USD
CY2010Q1	us-gaap	Revenues Revenues	3569000000	USD
CY2011Q1	us-gaap	Electric Production Expense ElectricProductionExpense	1056000000	USD
CY2010Q1	us-gaap	Electric Production Expense ElectricProductionExpense	1014000000	USD
CY2011Q1	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	275000000	USD
CY2010Q1	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	238000000	USD
CY2011Q1	us-gaap	Utilities Operating Expense Operations UtilitiesOperatingExpenseOperations	686000000	USD
CY2010Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	478844632	shares
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.73
CY2010Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	344000000	USD
CY2011Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	481144270	shares
CY2010Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	478429535	shares
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.73
CY2010Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.72
CY2011Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	481365806	shares
CY2010Q1	us-gaap	Utilities Operating Expense Operations UtilitiesOperatingExpenseOperations	673000000	USD
CY2011Q1	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	265000000	USD
CY2010Q1	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	271000000	USD
CY2011Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	403000000	USD
CY2010Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	408000000	USD
CY2011Q1	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	213000000	USD
CY2010Q1	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	207000000	USD
CY2011Q1	us-gaap	Operating Expenses OperatingExpenses	2898000000	USD
CY2010Q1	us-gaap	Operating Expenses OperatingExpenses	2811000000	USD
CY2011Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	832000000	USD
CY2010Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	758000000	USD
CY2011Q1	aep	Carrying Costs Income CarryingCostsIncome	15000000	USD
CY2010Q1	aep	Carrying Costs Income CarryingCostsIncome	14000000	USD
CY2011Q1	aep	Allowance For Equity Funds Used During Construction AllowanceForEquityFundsUsedDuringConstruction	20000000	USD
CY2010Q1	aep	Allowance For Equity Funds Used During Construction AllowanceForEquityFundsUsedDuringConstruction	24000000	USD
CY2011Q1	us-gaap	Interest Expense InterestExpense	242000000	USD
CY2010Q1	us-gaap	Interest Expense InterestExpense	250000000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	627000000	USD
CY2010Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	549000000	USD
CY2011Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	278000000	USD
CY2010Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	207000000	USD
CY2011Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	6000000	USD
CY2010Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	4000000	USD
CY2011Q1	us-gaap	Profit Loss ProfitLoss	355000000	USD
CY2010Q1	us-gaap	Profit Loss ProfitLoss	346000000	USD
CY2011Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1000000	USD
CY2010Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1000000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	354000000	USD
CY2010Q1	us-gaap	Net Income Loss NetIncomeLoss	345000000	USD
CY2011Q1	us-gaap	Preferred Stock Dividends PreferredStockDividends	1000000	USD
CY2010Q1	us-gaap	Preferred Stock Dividends PreferredStockDividends	1000000	USD
CY2011Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	353000000	USD
CY2010Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.72
CY2010Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.41	USD
CY2011Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.46	USD
CY2011Q1	us-gaap	Investment Income Net InvestmentIncomeNet	2000000	USD
CY2010Q1	us-gaap	Investment Income Net InvestmentIncomeNet	3000000	USD
CY2010Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	356000000	USD
CY2010Q1	aep	Subtotal Common Shareholders Equity SubtotalCommonShareholdersEquity	12968000000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	13140000000	USD
CY2011Q1	us-gaap	Margin Deposit Assets MarginDepositAssets	70000000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	1000000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	6000000	USD
CY2011Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	363000000	USD
CY2011Q1	us-gaap	Dividends Common Stock DividendsCommonStock	223000000	USD
CY2010Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	26000000	USD
CY2011Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	625000000	USD
CY2011Q1	us-gaap	Short Term Investments ShortTermInvestments	296000000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	294000000	USD
CY2010Q4	us-gaap	Short Term Investments ShortTermInvestments	416000000	USD
CY2010Q1	us-gaap	Dividends Common Stock DividendsCommonStock	197000000	USD
CY2010Q1	us-gaap	Stockholders Equity Other StockholdersEquityOther	0	USD
CY2010Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	4000000	USD
CY2010Q1	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	1000000	USD
CY2010Q1	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	5000000	USD
CY2010Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	13324000000	USD
CY2011Q1	aep	Subtotal Common Shareholders Equity SubtotalCommonShareholdersEquity	13416000000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	1000000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	0	USD
CY2011Q1	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	3000000	USD
CY2010Q1	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	3000000	USD
CY2010Q1	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	0	USD
CY2010Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	2000000	USD
CY2011Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	31000000	USD
CY2011Q1	us-gaap	Stockholders Equity Other StockholdersEquityOther	-13000000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	1000000	USD
CY2011Q1	aep	Accounts Receivable Accrued Unbilled Revenues AccountsReceivableAccruedUnbilledRevenues	138000000	USD
CY2011Q1	us-gaap	Transfers Accounted For As Secured Borrowings Assets Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount	914000000	USD
CY2011Q1	aep	Accounts Receivable Miscellaneous AccountsReceivableMiscellaneous	106000000	USD
CY2011Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	36000000	USD
CY2011Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1749000000	USD
CY2010Q4	aep	Accounts Receivable Accrued Unbilled Revenues AccountsReceivableAccruedUnbilledRevenues	195000000	USD
CY2010Q4	us-gaap	Transfers Accounted For As Secured Borrowings Assets Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount	949000000	USD
CY2010Q4	aep	Accounts Receivable Miscellaneous AccountsReceivableMiscellaneous	137000000	USD
CY2010Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	41000000	USD
CY2010Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1923000000	USD
CY2011Q1	us-gaap	Other Inventory Supplies OtherInventorySupplies	614000000	USD
CY2011Q1	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	301000000	USD
CY2011Q1	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	70000000	USD
CY2011Q1	us-gaap	Other Assets Current OtherAssetsCurrent	157000000	USD
CY2011Q1	us-gaap	Assets Current AssetsCurrent	4789000000	USD
CY2010Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	611000000	USD
CY2010Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	389000000	USD
CY2010Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	81000000	USD
CY2010Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	88000000	USD
CY2010Q4	us-gaap	Other Assets Current OtherAssetsCurrent	145000000	USD
CY2010Q4	us-gaap	Assets Current AssetsCurrent	5016000000	USD
CY2011Q1	us-gaap	Public Utilities Property Plant And Equipment Generation Or Processing PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing	24766000000	USD
CY2011Q1	us-gaap	Public Utilities Property Plant And Equipment Transmission PublicUtilitiesPropertyPlantAndEquipmentTransmission	8677000000	USD
CY2011Q1	aep	Employee Benefits And Pension Obligations EmployeeBenefitsAndPensionObligations	1863000000	USD
CY2011Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	993000000	USD
CY2011Q1	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	30732000000	USD
CY2010Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	15502000000	USD
CY2011Q1	us-gaap	Public Utilities Property Plant And Equipment Distribution PublicUtilitiesPropertyPlantAndEquipmentDistribution	14338000000	USD
CY2010Q4	us-gaap	Public Utilities Property Plant And Equipment Generation Or Processing PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing	24352000000	USD
CY2010Q4	us-gaap	Public Utilities Property Plant And Equipment Transmission PublicUtilitiesPropertyPlantAndEquipmentTransmission	8576000000	USD
CY2010Q4	us-gaap	Public Utilities Property Plant And Equipment Distribution PublicUtilitiesPropertyPlantAndEquipmentDistribution	14208000000	USD
CY2011Q1	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	3835000000	USD
CY2011Q1	us-gaap	Construction In Progress Gross ConstructionInProgressGross	2480000000	USD
CY2011Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	54096000000	USD
CY2011Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	18330000000	USD
CY2011Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	35766000000	USD
CY2010Q4	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	3846000000	USD
CY2010Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	2758000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	53740000000	USD
CY2010Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	18066000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	35674000000	USD
CY2011Q1	us-gaap	Securitized Regulatory Transition Assets Noncurrent SecuritizedRegulatoryTransitionAssetsNoncurrent	1707000000	USD
CY2011Q1	aep	Spent Nuclear Fuel And Decommissioning Trusts SpentNuclearFuelAndDecommissioningTrusts	1559000000	USD
CY2011Q1	us-gaap	Goodwill Goodwill	76000000	USD
CY2011Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1347000000	USD
CY2011Q1	us-gaap	Assets Noncurrent AssetsNoncurrent	10005000000	USD
CY2011Q1	us-gaap	Assets Assets	50560000000	USD
CY2010Q4	us-gaap	Securitized Regulatory Transition Assets Noncurrent SecuritizedRegulatoryTransitionAssetsNoncurrent	1742000000	USD
CY2010Q4	aep	Spent Nuclear Fuel And Decommissioning Trusts SpentNuclearFuelAndDecommissioningTrusts	1515000000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	76000000	USD
CY2010Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1079000000	USD
CY2010Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	9765000000	USD
CY2010Q4	us-gaap	Assets Assets	50455000000	USD
CY2011Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	1421000000	USD
CY2011Q1	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	109000000	USD
CY2011Q1	us-gaap	Customer Deposits Current CustomerDepositsCurrent	275000000	USD
CY2011Q1	us-gaap	Taxes Payable Current TaxesPayableCurrent	669000000	USD
CY2011Q1	us-gaap	Interest Payable Current InterestPayableCurrent	248000000	USD
CY2011Q1	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	20000000	USD
CY2011Q1	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	930000000	USD
CY2011Q1	us-gaap	Liabilities Current LiabilitiesCurrent	5989000000	USD
CY2011Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	884000000	USD
CY2010Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1061000000	USD
CY2010Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1309000000	USD
CY2010Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	129000000	USD
CY2010Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	273000000	USD
CY2010Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	702000000	USD
CY2010Q4	us-gaap	Interest Payable Current InterestPayableCurrent	281000000	USD
CY2010Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	17000000	USD
CY2010Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	952000000	USD
CY2010Q4	us-gaap	Liabilities Current LiabilitiesCurrent	6518000000	USD
CY2011Q1	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	138000000	USD
CY2011Q1	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	7490000000	USD
CY2011Q1	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	1413000000	USD
CY2010Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	141000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	7359000000	USD
CY2011Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	714000000	USD
CY2010Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	1394000000	USD
CY2010Q4	aep	Employee Benefits And Pension Obligations EmployeeBenefitsAndPensionObligations	1893000000	USD
CY2010Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	795000000	USD
CY2010Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	30255000000	USD
CY2011Q1	us-gaap	Liabilities Liabilities	36721000000	USD
CY2011Q1	us-gaap	Temporary Equity Carrying Amount TemporaryEquityCarryingAmount	60000000	USD
CY2010Q4	us-gaap	Liabilities Liabilities	36773000000	USD
CY2010Q4	us-gaap	Temporary Equity Carrying Amount TemporaryEquityCarryingAmount	60000000	USD
CY2011Q1	us-gaap	Common Stock Value CommonStockValue	3263000000	USD
CY2011Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5916000000	USD
CY2011Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4973000000	USD
CY2011Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-373000000	USD
CY2011Q1	us-gaap	Stockholders Equity StockholdersEquity	13779000000	USD
CY2011Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	50560000000	USD
CY2010Q4	us-gaap	Common Stock Value CommonStockValue	3257000000	USD
CY2010Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5904000000	USD
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4842000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-381000000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	13622000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	13622000000	USD
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	50455000000	USD
CY2011Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	600000000	shares
CY2011Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	502009606	shares
CY2010Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	600000000	shares
CY2010Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	501114881	shares
CY2011Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	6.50	USD
CY2011Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	20307725	shares
CY2010Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	6.50	USD
CY2010Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	20307725	shares
CY2011Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	13779000000	USD
CY2010Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	4943000000	USD
CY2011Q1	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	4957000000	USD
CY2011Q1	aep	Accounts Receivable Customers AccountsReceivableCustomers	627000000	USD
CY2010Q4	aep	Accounts Receivable Customers AccountsReceivableCustomers	683000000	USD
CY2010Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	1346000000	USD
CY2011Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	1433000000	USD
CY2011Q1	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	193000000	USD
CY2011Q1	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	359000000	USD
CY2010Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	232000000	USD
CY2010Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	410000000	USD
CY2010Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	837000000	USD
CY2011Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	15631000000	USD
CY2010	us-gaap	Commitments And Contingencies2009 CommitmentsAndContingencies2009
CY2011Q1	us-gaap	Litigation Reserve LitigationReserve	0	USD
CY2010Q4	us-gaap	Litigation Reserve LitigationReserve	448000000	USD
CY2010Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	3171000000	USD
CY2011Q1	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	3204000000	USD
CY2010Q1	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	609000000	USD
CY2011Q1	aep	Change In Other Temporary Investments Net ChangeInOtherTemporaryInvestmentsNet	-73000000	USD
CY2010Q1	aep	Change In Other Temporary Investments Net ChangeInOtherTemporaryInvestmentsNet	-82000000	USD
CY2011Q1	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	454000000	USD
CY2010Q1	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	445000000	USD
CY2011Q1	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	484000000	USD
CY2011Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	114000000	USD
CY2011Q1	us-gaap	Transfers Accounted For As Secured Borrowings Associated Liabilities Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount	620000000	USD
CY2010Q4	us-gaap	Transfers Accounted For As Secured Borrowings Associated Liabilities Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount	690000000	USD
CY2011Q1	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	813000000	USD
CY2010Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	656000000	USD
CY2011Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	330000000	USD
CY2011Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-42000000	USD
CY2011Q1	us-gaap	Amortization Of Nuclear Fuel Lease AmortizationOfNuclearFuelLease	34000000	USD
CY2011Q1	us-gaap	Amortization Of Deferred Property Taxes AmortizationOfDeferredPropertyTaxes	-52000000	USD
CY2011Q1	aep	Fuel Over Under Recovery Net FuelOverUnderRecoveryNet	27000000	USD
CY2011Q1	aep	Change In Other Noncurrent Assets ChangeInOtherNoncurrentAssets	-3000000	USD
CY2011Q1	aep	Change In Other Noncurrent Liabilities ChangeInOtherNoncurrentLiabilities	-77000000	USD
CY2011Q1	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-181000000	USD
CY2011Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-121000000	USD
CY2011Q1	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	-18000000	USD
CY2011Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-126000000	USD
CY2011Q1	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	2000000	USD
CY2011Q1	aep	Accrued Taxes AccruedTaxes	96000000	USD
CY2011Q1	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-33000000	USD
CY2011Q1	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	540000000	USD
CY2010Q1	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	473000000	USD
CY2011Q1	us-gaap	Payments For Proceeds From Nuclear Fuel PaymentsForProceedsFromNuclearFuel	27000000	USD
CY2010Q1	us-gaap	Payments For Proceeds From Nuclear Fuel PaymentsForProceedsFromNuclearFuel	38000000	USD
CY2011Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	69000000	USD
CY2010Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	139000000	USD
CY2011Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	4000000	USD
CY2010Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	32000000	USD
CY2011Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-613000000	USD
CY2010Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-430000000	USD
CY2011Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	31000000	USD
CY2010Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	26000000	USD
CY2010Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	652000000	USD
CY2011Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1014000000	USD
CY2011Q1	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	244000000	USD
CY2010Q1	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	931000000	USD
CY2011Q1	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	17000000	USD
CY2010Q1	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	24000000	USD
CY2010Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	756000000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	490000000	USD
CY2010Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	818000000	USD
CY2011Q1	us-gaap	Interest Paid Net InterestPaidNet	250000000	USD
CY2011Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2000000	USD
CY2011Q1	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	24000000	USD
CY2010Q1	us-gaap	Interest Paid Net InterestPaidNet	271000000	USD
CY2010Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-2000000	USD
CY2010Q1	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	148000000	USD
CY2011Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	16000000	USD
CY2010Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	638000000	USD
CY2011Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	223000000	USD
CY2010Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	197000000	USD
CY2011Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	1000000	USD
CY2010Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	1000000	USD
CY2011Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	830000000	USD
CY2011Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-83000000	USD
CY2011Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	777000000	USD
CY2010Q1	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	617000000	USD
CY2010Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-83000000	USD
CY2010Q1	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	20000000	USD
CY2010Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-83000000	USD
CY2010Q1	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	5000000	USD
CY2010Q1	aep	Accrued Taxes AccruedTaxes	-80000000	USD
CY2010Q1	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-34000000	USD
CY2010Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	14000000	USD
CY2010Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-55000000	USD
CY2010Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2000000	USD
CY2010Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	69000000	USD
CY2010Q1	us-gaap	Amortization Of Nuclear Fuel Lease AmortizationOfNuclearFuelLease	30000000	USD
CY2010Q1	us-gaap	Amortization Of Deferred Property Taxes AmortizationOfDeferredPropertyTaxes	-53000000	USD
CY2010Q1	aep	Fuel Over Under Recovery Net FuelOverUnderRecoveryNet	97000000	USD
CY2010Q1	aep	Change In Other Noncurrent Assets ChangeInOtherNoncurrentAssets	-28000000	USD
CY2010Q1	aep	Change In Other Noncurrent Liabilities ChangeInOtherNoncurrentLiabilities	-37000000	USD
CY2010Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	121000000	USD
CY2010Q1	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	0	USD
CY2011Q1	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	51000000	USD
CY2010Q1	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	USD
CY2011Q1	us-gaap	Payments For Legal Settlements PaymentsForLegalSettlements	211000000	USD
CY2010Q1	us-gaap	Payments For Legal Settlements PaymentsForLegalSettlements	0	USD
CY2011Q1	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	214000000	USD
CY2011Q1	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	331000000	USD
CY2010Q1	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	328000000	USD
CY2011Q1	us-gaap	Proceeds From Short Term Debt Maturing In More Than Three Months ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths	318000000	USD
CY2010Q1	us-gaap	Proceeds From Short Term Debt Maturing In More Than Three Months ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths	24000000	USD
CY2011Q1	us-gaap	Repayments Of Short Term Debt Maturing In More Than Three Months RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	475000000	USD
CY2010Q1	us-gaap	Repayments Of Short Term Debt Maturing In More Than Three Months RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	17000000	USD
CY2010Q1	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	216000000	USD
CY2011Q1	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	220000000	USD
CY2011Q1	aep	Acquisition Of Nuclear Fuel Included In Accounts Payable AcquisitionOfNuclearFuelIncludedInAccountsPayable	0	USD
CY2010Q1	aep	Acquisition Of Nuclear Fuel Included In Accounts Payable AcquisitionOfNuclearFuelIncludedInAccountsPayable	3000000	USD
CY2010Q1	aep	Government Grants Included In Accounts Receivable GovernmentGrantsIncludedInAccountsReceivable	0	USD
CY2011Q1	aep	Government Grants Included In Accounts Receivable GovernmentGrantsIncludedInAccountsReceivable	3000000	USD
CY2011Q1	aep	Minimum Percentage Of Equity Aep Provides MinimumPercentageOfEquityAepProvides	0.05	pure
CY2011Q1	aep	Percentage Of Vie Debt Guaranteed PercentageOfVieDebtGuaranteed	0.5	pure
CY2011Q1	aep	Percentage Of Vie Management Fee Received PercentageOfVieManagementFeeReceived	1	pure
CY2011Q1	aep	Percentage Of Ownership In Subsidiary PercentageOfOwnershipInSubsidiary	1	pure
CY2011Q1	us-gaap	Antidilutive Shares Outstanding AntidilutiveSharesOutstanding	136250	shares
CY2010Q1	us-gaap	Antidilutive Shares Outstanding AntidilutiveSharesOutstanding	437866	shares
CY2011Q1	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	8000000	USD
CY2010Q1	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	6000000	USD
CY2011Q1	aep	Credit Facilities Structured CreditFacilitiesStructured	1500000000	USD
CY2011Q1	aep	Possible Issuance Of Letter Of Credit Under Each Credit Facilities PossibleIssuanceOfLetterOfCreditUnderEachCreditFacilities	1350000000	USD
CY2011Q1	aep	Maximum Future Payments For Letters Of Credit MaximumFuturePaymentsForLettersOfCredit	124000000	USD
CY2011Q1	aep	Credit Agreement CreditAgreement	478000000	USD
CY2011Q1	aep	Variable Rate Pcbs Supported VariableRatePcbsSupported	472000000	USD
CY2011Q1	aep	Remarketed Pcbs RemarketedPcbs	357000000	USD
CY2011Q1	aep	Bilateral Letters Of Credit BilateralLettersOfCredit	361000000	USD
CY2011Q1	aep	Remaining Pcbs Held In Trust RemainingPcbsHeldInTrust	115000000	USD
CY2011Q1	aep	Guarantees Of Mine Reclamation Amount GuaranteesOfMineReclamationAmount	65000000	USD
CY2011Q1	aep	Estimated Final Cost Mine Reclamation EstimatedFinalCostMineReclamation	58000000	USD
CY2011Q1	aep	New Master Lease Agreement With Ge NewMasterLeaseAgreementWithGE	137000000	USD
CY2011Q1	aep	Capital Leases Refinanced With Ge CapitalLeasesRefinancedWithGE	60000000	USD
CY2011Q1	aep	Operating Leases Refinanced With Ge OperatingLeasesRefinancedWithGE	77000000	USD
CY2011Q1	aep	Lease Assets Purchased From Ge LeaseAssetsPurchasedFromGE	5000000	USD
CY2011Q1	aep	Leased Assets Not Refinanced With Ge LeasedAssetsNotRefinancedWithGE	11000000	USD
CY2011Q1	aep	Percent Limit Unamortized Balance PercentLimitUnamortizedBalance	0.78	pure
CY2011Q1	aep	Max Percent Unamortized Balance Guarantee To Lessor MaxPercentUnamortizedBalanceGuaranteeToLessor	0.78	pure
CY2011Q1	aep	Max Potential Loss On Master Lease Agreements MaxPotentialLossOnMasterLeaseAgreements	14000000	USD
CY2011Q1	aep	Guaranteed Sales Proceeds Percentage Of Fair Value To Lessor Current Term GuaranteedSalesProceedsPercentageOfFairValueToLessorCurrentTerm	0.84	pure
CY2011Q1	aep	Guaranteed Sales Proceeds Percent Of Fair Value To Lessor End Of Max Lease Term GuaranteedSalesProceedsPercentOfFairValueToLessorEndOfMaxLeaseTerm	0.77	pure
CY2011Q1	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	11000000	USD
CY2011Q1	aep	Civil Penalty CivilPenalty	300000	USD
CY2011Q1	aep	State Civil Penalty StateCivilPenalty	240000	USD
CY2011Q1	aep	Payment For State Civil Penalty PaymentForStateCivilPenalty	75000	USD
CY2011Q1	aep	Repair Of Property Damage And Replacement Expected Cost RepairOfPropertyDamageAndReplacementExpectedCost	395000000	USD
CY2011Q1	aep	Received Partial Payments For Cost Incurred To Repair Property Damage ReceivedPartialPaymentsForCostIncurredToRepairPropertyDamage	203000000	USD
CY2011Q1	aep	Years To Pay Settlement YearsToPaySettlement	15	pure
CY2011Q1	aep	Lease Dispute Settlement LeaseDisputeSettlement	39000000	USD
CY2011Q1	aep	Exclusive Right To Use Cushion Gas In Billion Cubic Feet ExclusiveRightToUseCushionGasInBillionCubicFeet	55	pure
CY2011Q1	aep	Payments For Settlements Of Claims PaymentsForSettlementsOfClaims	346000000	USD
CY2011Q1	aep	Fees For Attornrey FeesForAttornrey	20000000	USD
CY2011Q1	aep	Settlement Of Boa Litigation SettlementOfBoaLitigation	425000000	USD
CY2011Q1	us-gaap	Gain Loss On Sale Of Property GainLossOnSaleOfProperty	380000000	USD
CY2011Q1	aep	Sale Of Business With Gas Rights SaleOfBusinessWithGasRights	1000000000	USD
CY2011Q1	aep	Capital Loss Valuation Allowance On Settlement CapitalLossValuationAllowanceOnSettlement	56000000	USD
CY2011Q1	aep	Pretax Gain On Boa Settlement PretaxGainOnBoaSettlement	51000000	USD
CY2011Q1	aep	Net Loss On Boa Settlement NetLossOnBoaSettlement	22000000	USD
CY2011Q1	aep	Litigation Settlement Impact On Financial Statement LitigationSettlementImpactOnFinancialStatement	<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"> </td><td colspan="3" style="width: 144px; text-align:center;border-color:#000000;min-width:144px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">Three Months Ended</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"> </td><td colspan="3" style="width: 144px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:144px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">March 31, 2011</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"> </td><td colspan="3" style="width: 144px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:144px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">(in millions)</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Income Statement:</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:left;border-color:#000000;min-width:114px;"> </td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Other Operation Expense - Pretax Gain on Settlement</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 51</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Income Tax Expense</font></td><td style="width: 15px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 73</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Net Loss After Tax</font></td><td style="width: 15px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:15px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 15px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> (22)</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"> </td><td style="width: 15px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; border-top-style:double;border-top-width:3px;text-align:right;border-color:#000000;min-width:114px;"> </td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Cash Flow Statement:</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"> </td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Net Income - Loss on Settlement with BOA and Enron</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> (22)</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Deferred Income Taxes </font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 91</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Gain on Settlement with BOA and Enron</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> (51)</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Settlement of Litigation with BOA and Enron</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> (211)</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Accrued Taxes, Net</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> (18)</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Acquisition of Cushion Gas from BOA</font></td><td style="width: 15px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> (214)</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Cash Paid</font></td><td style="width: 15px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:15px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 15px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> (425)</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"> </td><td style="width: 15px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:114px;"> </td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"> </td><td colspan="3" style="width: 144px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:144px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">March 31, 2011</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"> </td><td colspan="3" style="width: 144px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:144px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">(in millions)</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Balance Sheet:</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"> </td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Deferred Charges and Other Noncurrent Assets - Gas Acquired</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 214</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Deferred Credits and Other Noncurrent Liabilities - Gas Service Liability</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 187</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Accrued Taxes - Tax Benefit on Settlement with BOA and Enron </font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 18</font></td></tr><tr style="height: 16px"><td style="width: 51px; text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 440px; text-align:left;border-color:#000000;min-width:440px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> Deferred Income Taxes - Deferred Tax Benefit on Gas Service Liability</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 114px; text-align:right;border-color:#000000;min-width:114px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 66</font></td></tr></table></div>
CY2011Q1	aep	Other Operation Expense Pretax Gain On Settlement OtherOperationExpensePretaxGainOnSettlement	51000000	USD
CY2011Q1	aep	Income Tax Expense Boa Settlement IncomeTaxExpenseBoaSettlement	73000000	USD
CY2011Q1	aep	Net Loss After Tax From Boa Settlement NetLossAfterTaxFromBoaSettlement	-22000000	USD
CY2011Q1	aep	Accrued Tax Benefits For Boa AccruedTaxBenefitsForBoa	-18000000	USD
CY2011Q1	aep	Deferred Income Tax On Boa Settlement DeferredIncomeTaxOnBoaSettlement	91000000	USD
CY2011Q1	aep	Deferred Tax Benefit Gas Service Liability DeferredTaxBenefitGasServiceLiability	66000000	USD
CY2011Q1	us-gaap	Notional Amount Of Interest Rate Derivatives NotionalAmountOfInterestRateDerivatives	273000000	USD
CY2010Q4	us-gaap	Notional Amount Of Interest Rate Derivatives NotionalAmountOfInterestRateDerivatives	171000000	USD
CY2011Q1	aep	Notional Amount Of Interest Rate And Foreign Currency Derivatives Contract NotionalAmountOfInterestRateAndForeignCurrencyDerivativesContract	503000000	USD
CY2010Q4	aep	Notional Amount Of Interest Rate And Foreign Currency Derivatives Contract NotionalAmountOfInterestRateAndForeignCurrencyDerivativesContract	907000000	USD
CY2011Q1	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	7000000	USD
CY2010Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	8000000	USD
CY2011Q1	aep	Gas Service Liability GasServiceLiability	187000000	USD
CY2011Q1	aep	Cushion Gas Inventory CushionGasInventory	214000000	USD
CY2010Q1	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-11000000	USD
CY2011Q1	us-gaap	Segment Reporting Information Revenue From External Customers SegmentReportingInformationRevenueFromExternalCustomers	3730000000	USD
CY2011Q1	us-gaap	Segment Reporting Information Intersegment Revenue SegmentReportingInformationIntersegmentRevenue	0	USD
CY2010Q1	us-gaap	Segment Reporting Information Revenue From External Customers SegmentReportingInformationRevenueFromExternalCustomers	3569000000	USD
CY2010Q1	us-gaap	Segment Reporting Information Intersegment Revenue SegmentReportingInformationIntersegmentRevenue	0	USD
CY2011Q1	aep	Volume Of Power Derivatives Contract VolumeOfPowerDerivativesContract	539000000	pure
CY2010Q4	aep	Volume Of Power Derivatives Contract VolumeOfPowerDerivativesContract	652000000	pure
CY2011Q1	aep	Volume Of Coal Derivatives Contract VolumeOfCoalDerivativesContract	60000000	pure
CY2010Q4	aep	Volume Of Coal Derivatives Contract VolumeOfCoalDerivativesContract	63000000	pure
CY2011Q1	aep	Volume Of Natural Gas Derivatives Contract VolumeOfNaturalGasDerivativesContract	89000000	pure
CY2010Q4	aep	Volume Of Natural Gas Derivatives Contract VolumeOfNaturalGasDerivativesContract	94000000	pure
CY2011Q1	aep	Volume Of Heating Oil And Gasoline Derivatives Contract VolumeOfHeatingOilAndGasolineDerivativesContract	6000000	pure
CY2010Q4	aep	Volume Of Heating Oil And Gasoline Derivatives Contract VolumeOfHeatingOilAndGasolineDerivativesContract	6000000	pure
CY2011Q1	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	12000000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-15000000	USD
CY2010Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	2000000	USD
CY2011Q1	aep	Cash Collateral Paid To Third Parties CashCollateralPaidToThirdParties	70000000	USD
CY2010Q4	aep	Cash Collateral Paid To Third Parties CashCollateralPaidToThirdParties	109000000	USD
CY2011Q1	us-gaap	Derivative Assets DerivativeAssets	552000000	USD
CY2011Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	247000000	USD
CY2011Q1	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	305000000	USD
CY2010Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	372000000	USD
CY2010Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	270000000	USD
CY2010Q4	us-gaap	Derivative Assets DerivativeAssets	642000000	USD
CY2011Q1	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	32000000	USD
CY2010Q1	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	81000000	USD
CY2011Q1	aep	Gain On Fair Value Hedging Instrument GainOnFairValueHedgingInstrument	4000000	USD
CY2011Q1	aep	Loss On Hedging Instrument On Long Term Debt LossOnHedgingInstrumentOnLongTermDebt	4000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	11000000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1000000	USD
CY2011Q1	aep	Hedging Assets HedgingAssets	14000000	USD
CY2011Q1	aep	Hedging Liabilities HedgingLiabilities	-5000000	USD
CY2011Q1	aep	Cash Flow Hedges Portion Expected To Be Reclassified To Net Income Current CashFlowHedgesPortionExpectedToBeReclassifiedToNetIncomeCurrent	3000000	USD
CY2010Q4	aep	Hedging Assets HedgingAssets	38000000	USD
CY2010Q4	aep	Hedging Liabilities HedgingLiabilities	-6000000	USD
CY2010Q4	aep	Cash Flow Hedges Portion Expected To Be Reclassified To Net Income Current CashFlowHedgesPortionExpectedToBeReclassifiedToNetIncomeCurrent	1000000	USD
CY2011Q1	us-gaap	Maximum Length Of Time Hedged In Price Risk Cash Flow Hedge MaximumLengthOfTimeHedgedInPriceRiskCashFlowHedge	38
CY2011Q1	aep	Collateral Required CollateralRequired	<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 444px; text-align:left;border-color:#000000;min-width:444px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 92px; text-align:center;border-color:#000000;min-width:92px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">March 31,</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td colspan="2" style="width: 92px; text-align:center;border-color:#000000;min-width:92px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">December 31,</font></td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 444px; text-align:left;border-color:#000000;min-width:444px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:92px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">2011</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td colspan="2" style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:92px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">2010</font></td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 444px; text-align:center;border-color:#000000;min-width:444px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="5" style="width: 202px; text-align:center;border-color:#000000;min-width:202px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">(in millions)</font></td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 454px; text-align:left;border-color:#000000;min-width:454px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">Liabilities for Derivative Contracts with Credit Downgrade Triggers</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">$</font></td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 19</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">$</font></td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 20</font></td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 454px; text-align:left;border-color:#000000;min-width:454px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">Amount of Collateral AEP Subsidiaries Would Have Been</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:left;border-color:#000000;min-width:80px;"> </td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:left;border-color:#000000;min-width:80px;"> </td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 444px; text-align:left;border-color:#000000;min-width:444px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Required to Post</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 52</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 45</font></td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 454px; text-align:left;border-color:#000000;min-width:454px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">Amount Attributable to RTO and ISO Activities</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 50</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 44</font></td></tr></table></div>
CY2011Q1	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	19000000	USD
CY2010Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	20000000	USD
CY2011Q1	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	52000000	USD
CY2010Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	45000000	USD
CY2011Q1	aep	Amount Attributable To Rto And Iso Activities AmountAttributableToRtoAndIsoActivities	50000000	USD
CY2010Q4	aep	Amount Attributable To Rto And Iso Activities AmountAttributableToRtoAndIsoActivities	44000000	USD
CY2011Q1	aep	Fair Value Of Derivative Liabilities Subject To Cross Default Provisions FairValueOfDerivativeLiabilitiesSubjectToCrossDefaultProvisions	364000000	USD
CY2010Q4	aep	Fair Value Of Derivative Liabilities Subject To Cross Default Provisions FairValueOfDerivativeLiabilitiesSubjectToCrossDefaultProvisions	401000000	USD
CY2011Q1	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	29000000	USD
CY2010Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	81000000	USD
CY2011Q1	us-gaap	Assets Needed For Immediate Settlement Aggregate Fair Value AssetsNeededForImmediateSettlementAggregateFairValue	206000000	USD
CY2010Q4	us-gaap	Assets Needed For Immediate Settlement Aggregate Fair Value AssetsNeededForImmediateSettlementAggregateFairValue	213000000	USD
CY2011Q1	aep	Cross Default Provision CrossDefaultProvision	<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 454px; text-align:left;border-color:#000000;min-width:454px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 92px; text-align:center;border-color:#000000;min-width:92px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">March 31,</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td colspan="2" style="width: 92px; text-align:center;border-color:#000000;min-width:92px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">December 31,</font></td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 454px; text-align:left;border-color:#000000;min-width:454px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:92px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">2011</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td colspan="2" style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:92px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">2010</font></td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 454px; text-align:center;border-color:#000000;min-width:454px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="5" style="width: 202px; text-align:center;border-color:#000000;min-width:202px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">(in millions)</font></td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 454px; text-align:left;border-color:#000000;min-width:454px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Liabilities for Contracts with Cross Default Provisions Prior to Contractual</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:left;border-color:#000000;min-width:80px;"> </td><td style="width: 18px; text-align:left;border-color:#000000;min-width:18px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:left;border-color:#000000;min-width:80px;"> </td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 454px; text-align:left;border-color:#000000;min-width:454px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> Netting Arrangements</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">$</font></td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 364</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">$</font></td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 401</font></td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 454px; text-align:left;border-color:#000000;min-width:454px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Amount of Cash Collateral Posted</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 29</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 81</font></td></tr><tr style="height: 17px"><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 454px; text-align:left;border-color:#000000;min-width:454px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Additional Settlement Liability if Cross Default Provision is Triggered</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 206</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 213</font></td></tr></table></div>
CY2011Q1	aep	Input For Fair Value Modeling InputForFairValueModeling	<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 17px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td colspan="5" style="width: 382px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:382px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">Type of Fixed Income Security</font></td></tr><tr style="height: 17px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">United States</font></td><td style="width: 15px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:124px;"> </td><td style="width: 15px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:118px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">State and Local</font></td></tr><tr style="height: 17px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:175px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">Type of Input</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">Government</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:124px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">Corporate Debt</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:118px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">Government</font></td></tr><tr style="height: 17px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; text-align:center;border-color:#000000;min-width:124px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; text-align:center;border-color:#000000;min-width:118px;"> </td></tr><tr style="height: 17px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Benchmark Yields</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; text-align:center;border-color:#000000;min-width:124px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; text-align:center;border-color:#000000;min-width:118px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td></tr><tr style="height: 17px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Broker Quotes</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; text-align:center;border-color:#000000;min-width:124px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; text-align:center;border-color:#000000;min-width:118px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td></tr><tr style="height: 17px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Discount Margins</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; text-align:center;border-color:#000000;min-width:124px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; text-align:center;border-color:#000000;min-width:118px;"> </td></tr><tr style="height: 17px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Treasury Market Update</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; text-align:center;border-color:#000000;min-width:124px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; text-align:center;border-color:#000000;min-width:118px;"> </td></tr><tr style="height: 17px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Base Spread</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; text-align:center;border-color:#000000;min-width:124px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; text-align:center;border-color:#000000;min-width:118px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td></tr><tr style="height: 15px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Corporate Actions</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; text-align:center;border-color:#000000;min-width:124px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; text-align:center;border-color:#000000;min-width:118px;"> </td></tr><tr style="height: 15px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Ratings Agency Updates</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; text-align:center;border-color:#000000;min-width:124px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; text-align:center;border-color:#000000;min-width:118px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td></tr><tr style="height: 15px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Prepayment Schedule and</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; text-align:center;border-color:#000000;min-width:124px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; text-align:center;border-color:#000000;min-width:118px;"> </td></tr><tr style="height: 15px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;"> History</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 124px; text-align:center;border-color:#000000;min-width:124px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 118px; text-align:center;border-color:#000000;min-width:118px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td></tr><tr style="height: 15px"><td style="width: 57px; text-align:left;border-color:#000000;min-width:57px;"> </td><td style="width: 175px; text-align:left;border-color:#000000;min-width:175px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Yield Adjustments</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 110px; text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">X</font></td><td style="width: 15px; 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CY2011Q1	aep	Long Term Debt Fair Value LongTermDebtFairValue	18324000000	USD
CY2010Q4	aep	Long Term Debt Fair Value LongTermDebtFairValue	18285000000	USD
CY2010Q4	us-gaap	Long Term Debt LongTermDebt	16811000000	USD
CY2011Q1	us-gaap	Long Term Debt LongTermDebt	17052000000	USD
CY2011Q1	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	196000000	USD
CY2011Q1	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	148000000	USD
CY2011Q1	aep	Gross Realized Gains On Investment Sales On Short Term Investment GrossRealizedGainsOnInvestmentSalesOnShortTermInvestment	0	USD
CY2011Q1	aep	Gross Realized Losses On Investment Sales On Short Term Investment GrossRealizedLossesOnInvestmentSalesOnShortTermInvestment	0	USD
CY2010Q1	aep	Gross Realized Losses On Investment Sales On Short Term Investment GrossRealizedLossesOnInvestmentSalesOnShortTermInvestment	0	USD
CY2010Q1	aep	Gross Realized Gains On Investment Sales On Short Term Investment GrossRealizedGainsOnInvestmentSalesOnShortTermInvestment	0	USD
CY2010Q1	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	197000000	USD
CY2010Q1	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	241000000	USD
CY2011Q1	us-gaap	Fair Value Assets Measured On Recurring Basis Cash And Cash Equivalents FairValueAssetsMeasuredOnRecurringBasisCashAndCashEquivalents	625000000	USD
CY2011Q1	aep	Gross Unrealized Gains GrossUnrealizedGains	249000000	USD
CY2010Q4	aep	Gross Unrealized Gains GrossUnrealizedGains	209000000	USD
CY2011Q1	aep	Temporary Impairments TemporaryImpairments	-116000000	USD
CY2010Q4	aep	Temporary Impairments TemporaryImpairments	-126000000	USD
CY2011Q1	aep	Proceeds From Investment Sales ProceedsFromInvestmentSales	288000000	USD
CY2011Q1	aep	Purchases Of Investments PurchasesOfInvestments	306000000	USD
CY2011Q1	aep	Gross Realized Gains On Investment Sales GrossRealizedGainsOnInvestmentSales	5000000	USD
CY2011Q1	aep	Gross Realized Losses On Investment Sales GrossRealizedLossesOnInvestmentSales	5000000	USD
CY2010Q1	aep	Gross Realized Losses On Investment Sales GrossRealizedLossesOnInvestmentSales	0	USD
CY2010Q1	aep	Gross Realized Gains On Investment Sales GrossRealizedGainsOnInvestmentSales	5000000	USD
CY2010Q1	aep	Purchases Of Investments PurchasesOfInvestments	248000000	USD
CY2010Q1	aep	Proceeds From Investment Sales ProceedsFromInvestmentSales	232000000	USD
CY2010Q4	aep	Adjusted Cost Of Debt Securities AdjustedCostOfDebtSecurities	835000000	USD
CY2011Q1	aep	Adjusted Cost Of Debt Securities AdjustedCostOfDebtSecurities	845000000	USD
CY2011Q1	aep	Adjusted Cos Of Equity Securities AdjustedCosOfEquitySecurities	450000000	USD
CY2010Q4	aep	Adjusted Cos Of Equity Securities AdjustedCosOfEquitySecurities	451000000	USD
CY2011Q1	aep	Other Temporary Investments OtherTemporaryInvestments	296000000	USD
CY2011Q1	aep	Fair Value Assets Measured On Recurring Basis Total FairValueAssetsMeasuredOnRecurringBasisTotal	3032000000	USD
CY2011Q1	aep	Risk Management Liabilities RiskManagementLiabilities	247000000	USD
CY2011Q1	aep	Risk Management Assets RiskManagementAssets	552000000	USD
CY2010Q4	us-gaap	Fair Value Assets Measured On Recurring Basis Cash And Cash Equivalents FairValueAssetsMeasuredOnRecurringBasisCashAndCashEquivalents	294000000	USD
CY2010Q4	aep	Other Temporary Investments OtherTemporaryInvestments	416000000	USD
CY2010Q4	aep	Risk Management Assets RiskManagementAssets	642000000	USD
CY2010Q4	aep	Fair Value Assets Measured On Recurring Basis Total FairValueAssetsMeasuredOnRecurringBasisTotal	2867000000	USD
CY2010Q4	aep	Risk Management Liabilities RiskManagementLiabilities	270000000	USD
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	85000000	USD
CY2011Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	-2000000	USD
CY2011Q1	aep	Unrealized Gain Loss Included In Net Income Relating To Assets Still Held At Reporting Date UnrealizedGainLossIncludedInNetIncomeRelatingToAssetsStillHeldAtReportingDate	-4000000	USD
CY2011Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	0	USD
CY2011Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements	-8000000	USD
CY2011Q1	aep	Fair Value Measurement With Unobservable Inputs Recon Into Level Three FairValueMeasurementWithUnobservableInputsReconIntoLevelThree	0	USD
CY2011Q1	aep	Fair Value Measurement With Unobservable Inputs Recon Out Of Level Three FairValueMeasurementWithUnobservableInputsReconOutOfLevelThree	-8000000	USD
CY2011Q1	aep	Changes In Fair Value Allocated To Regulated Jurisdiction ChangesInFairValueAllocatedToRegulatedJurisdiction	10000000	USD
CY2011Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	73000000	USD
CY2009Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	62000000	USD
CY2010Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	27000000	USD
CY2010Q1	aep	Unrealized Gain Loss Included In Net Income Relating To Assets Still Held At Reporting Date UnrealizedGainLossIncludedInNetIncomeRelatingToAssetsStillHeldAtReportingDate	24000000	USD
CY2010Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	0	USD
CY2010Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements	-31000000	USD
CY2010Q1	aep	Changes In Fair Value Allocated To Regulated Jurisdiction ChangesInFairValueAllocatedToRegulatedJurisdiction	18000000	USD
CY2010Q1	aep	Fair Value Measurement With Unobservable Inputs Recon Into Level Three FairValueMeasurementWithUnobservableInputsReconIntoLevelThree	15000000	USD
CY2010Q1	aep	Fair Value Measurement With Unobservable Inputs Recon Out Of Level Three FairValueMeasurementWithUnobservableInputsReconOutOfLevelThree	1000000	USD
CY2010Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	116000000	USD
CY2010Q1	aep	Decrease In Deferred Tax Assets DecreaseInDeferredTaxAssets	56000000	USD
CY2010Q1	aep	Net Regulatory Tax Assets Recorded NetRegulatoryTaxAssetsRecorded	35000000	USD
CY2010Q1	aep	Decrease In Net Income DecreaseInNetIncome	21000000	USD
CY2010	aep	Increased Bonus Depreciation IncreasedBonusDepreciation	1	pure
CY2010	aep	Bonus Depreciation Provision BonusDepreciationProvision	0.5	pure
CY2010Q4	us-gaap	Unsecured Debt UnsecuredDebt	11669000000	USD
CY2010Q4	us-gaap	Longterm Pollution Control Bond Current And Noncurrent LongtermPollutionControlBondCurrentAndNoncurrent	2263000000	USD
CY2010Q4	us-gaap	Other Notes Payable OtherNotesPayable	396000000	USD
CY2010Q4	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	315000000	USD
CY2010Q4	us-gaap	Spent Nuclear Fuel Obligation Noncurrent SpentNuclearFuelObligationNoncurrent	265000000	USD
CY2010Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	91000000	USD
CY2010Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	-35000000	USD
CY2011Q1	us-gaap	Unsecured Debt UnsecuredDebt	12069000000	USD
CY2011Q1	us-gaap	Longterm Pollution Control Bond Current And Noncurrent LongtermPollutionControlBondCurrentAndNoncurrent	2213000000	USD
CY2011Q1	us-gaap	Other Notes Payable OtherNotesPayable	387000000	USD
CY2011Q1	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	315000000	USD
CY2011Q1	us-gaap	Spent Nuclear Fuel Obligation Noncurrent SpentNuclearFuelObligationNoncurrent	265000000	USD
CY2011Q1	us-gaap	Other Long Term Debt OtherLongTermDebt	91000000	USD
CY2011Q1	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	-43000000	USD
CY2011Q1	us-gaap	Secured Debt SecuredDebt	1755000000	USD
CY2010Q4	us-gaap	Secured Debt SecuredDebt	1847000000	USD
CY2011Q1	aep	Trust Fund Assets One Time Fee Obligation For Nuclear Fuel Disposition TrustFundAssetsOneTimeFeeObligationForNuclearFuelDisposition	307000000	USD
CY2010Q4	aep	Trust Fund Assets One Time Fee Obligation For Nuclear Fuel Disposition TrustFundAssetsOneTimeFeeObligationForNuclearFuelDisposition	307000000	USD
CY2011Q1	aep	Proceeds From Issuances Of Debt ProceedsFromIssuancesOfDebt	1021000000	USD
CY2011Q1	aep	Auction Rate Tax Exempt Long Term Debt Outstanding AuctionRateTaxExemptLongTermDebtOutstanding	418000000	USD
CY2011Q1	aep	Period To Defer Interest Payments On Debentures PeriodToDeferInterestPaymentsOnDebentures	10
CY2011Q1	aep	Dividend Payment Restrictions DividendPaymentRestrictions	7000000000	USD
CY2011Q1	aep	Maximum Percentage Debt To Capitalization MaximumPercentageDebtToCapitalization	0.675	pure
CY2011Q1	us-gaap	Commercial Paper CommercialPaper	813000000	USD
CY2010Q4	us-gaap	Commercial Paper CommercialPaper	650000000	USD
CY2010Q4	aep	Commercial Paper Interest Rate CommercialPaperInterestRate	0.0052	pure
CY2011Q1	aep	Commercial Paper Interest Rate CommercialPaperInterestRate	0.0048	pure
CY2011Q1	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	USD
CY2010Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	6000000	USD
CY2010Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0215	pure
CY2011Q1	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.003	pure
CY2011Q1	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.00	pure
CY2010Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0031	pure
CY2011Q1	aep	Total Commitment From Bank Conduits To Finance Receivables TotalCommitmentFromBankConduitsToFinanceReceivables	750000000	USD
CY2011Q1	aep	Commitment From Bank Conduits That Expire In One Year CommitmentFromBankConduitsThatExpireInOneYear	375000000	USD
CY2011Q1	aep	Commitment From Bank Conduits That Expire In Three Years CommitmentFromBankConduitsThatExpireInThreeYears	375000000	USD
CY2011Q1	aep	Effective Interest Rates On Securitization Of Accounts Receivable EffectiveInterestRatesOnSecuritizationOfAccountsReceivable	0.0031	pure
CY2011Q1	aep	Net Uncollectible Accounts Receivable Written Off NetUncollectibleAccountsReceivableWrittenOff	11000000	USD
CY2010Q1	aep	Effective Interest Rates On Securitization Of Accounts Receivable EffectiveInterestRatesOnSecuritizationOfAccountsReceivable	0.0023	pure
CY2010Q1	aep	Net Uncollectible Accounts Receivable Written Off NetUncollectibleAccountsReceivableWrittenOff	4000000	USD
CY2011Q1	aep	Total Principal Outstanding TotalPrincipalOutstanding	620000000	USD
CY2010Q4	aep	Total Principal Outstanding TotalPrincipalOutstanding	690000000	USD
CY2011Q1	aep	Delinquent Securitized Accounts Receivable DelinquentSecuritizedAccountsReceivable	42000000	USD
CY2011Q1	aep	Bad Debt Reserves Related To Securitized Sale Of Accounts Receivable BadDebtReservesRelatedToSecuritizedSaleOfAccountsReceivable	21000000	USD
CY2010Q4	aep	Delinquent Securitized Accounts Receivable DelinquentSecuritizedAccountsReceivable	50000000	USD
CY2010Q4	aep	Bad Debt Reserves Related To Securitized Sale Of Accounts Receivable BadDebtReservesRelatedToSecuritizedSaleOfAccountsReceivable	26000000	USD
CY2010Q4	aep	Accounts Receivable Retained Interest And Pledged As Collateral Less Uncollectible Accounts AccountsReceivableRetainedInterestAndPledgedAsCollateralLessUncollectibleAccounts	923000000	USD
CY2011Q1	aep	Accounts Receivable Retained Interest And Pledged As Collateral Less Uncollectible Accounts AccountsReceivableRetainedInterestAndPledgedAsCollateralLessUncollectibleAccounts	893000000	USD
CY2011Q1	aep	Unbilled Receivables Related To Securitization Sale Of Accounts Receivable UnbilledReceivablesRelatedToSecuritizationSaleOfAccountsReceivable	297000000	USD
CY2010Q4	aep	Unbilled Receivables Related To Securitization Sale Of Accounts Receivable UnbilledReceivablesRelatedToSecuritizationSaleOfAccountsReceivable	354000000	USD
CY2010	us-gaap	Severance Costs SeveranceCosts	293000000	USD
CY2010Q4	aep	Number Employees Severed Voluntary NumberEmployeesSeveredVoluntary	2461	pure
CY2011Q1	us-gaap	Payments For Restructuring PaymentsForRestructuring	-5000000	USD
CY2011Q1	us-gaap	Restructuring Reserve RestructuringReserve	11000000	USD
CY2011Q1	us-gaap	Restructuring Reserve Accrual Adjustment RestructuringReserveAccrualAdjustment	-1000000	USD
CY2010Q4	us-gaap	Restructuring Reserve RestructuringReserve	17000000	USD
CY2011Q1	us-gaap	Restructuring And Related Cost Cost Incurred To Date RestructuringAndRelatedCostCostIncurredToDate	0	USD

Files In Submission

Name	View Source	Status
0000004904-11-000074-index-headers.html	Edgar Link	pending
0000004904-11-000074-index.html	Edgar Link	pending
0000004904-11-000074.txt	Edgar Link	pending
0000004904-11-000074-xbrl.zip	Edgar Link	pending
aep-20110331.xml	Edgar Link	completed
aep-20110331.xsd	Edgar Link	pending
aep-20110331_cal.xml	Edgar Link	unprocessable
aep-20110331_def.xml	Edgar Link	unprocessable
aep-20110331_lab.xml	Edgar Link	unprocessable
aep-20110331_pre.xml	Edgar Link	unprocessable
defnref.xml	Edgar Link	unprocessable
ex12aep1q.htm	Edgar Link	pending
ex31aaep.htm	Edgar Link	pending
ex31baep.htm	Edgar Link	pending
ex32aaep.htm	Edgar Link	pending
ex32baep.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
q111aep10q.htm	Edgar Link	pending
R1.xml	Edgar Link	unprocessable
R10.xml	Edgar Link	unprocessable
R11.xml	Edgar Link	unprocessable
R12.xml	Edgar Link	unprocessable
R13.xml	Edgar Link	unprocessable
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R15.xml	Edgar Link	unprocessable
R16.xml	Edgar Link	unprocessable
R17.xml	Edgar Link	unprocessable
R18.xml	Edgar Link	unprocessable
R19.xml	Edgar Link	unprocessable
R2.xml	Edgar Link	unprocessable
R20.xml	Edgar Link	unprocessable
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R22.xml	Edgar Link	unprocessable
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R24.xml	Edgar Link	unprocessable
R25.xml	Edgar Link	unprocessable
R26.xml	Edgar Link	unprocessable
R27.xml	Edgar Link	unprocessable
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R32.xml	Edgar Link	unprocessable
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R40.xml	Edgar Link	unprocessable
R41.xml	Edgar Link	unprocessable
R5.xml	Edgar Link	unprocessable
R6.xml	Edgar Link	unprocessable
R7.xml	Edgar Link	unprocessable
R8.xml	Edgar Link	unprocessable
R9.xml	Edgar Link	unprocessable

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$AEP
AMERICAN ELECTRIC POWER CO INC Stock $aep

2011 Q1 Form 10-Q Financial Statement

#000000490411000074 Filed on May 03, 2011

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AEP AMERICAN ELECTRIC POWER CO INC Stock $aep

2011 Q1 Form 10-Q Financial Statement

#000000490411000074 Filed on May 03, 2011

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AEP
AMERICAN ELECTRIC POWER CO INC Stock $aep