$AES
AES CORP Stock $aes

$aes Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000119312513077580 Filed on February 27, 2013

Income Statement

Concept	2012 Q4	2012	2011 Q4
Revenue	$4.373B	$17.16B	$4.183B
YoY Change	4.54%	6.62%	-0.21%
Cost Of Revenue	$3.494B	$13.58B
YoY Change		12.63%
Gross Profit	$882.0M	$3.583B	$1.079B
YoY Change	-18.26%	-11.31%	7.04%
Gross Profit Margin	20.17%	20.88%	25.79%
Selling, General & Admin	$49.00M	$274.0M
YoY Change		-20.81%
% of Gross Profit	5.56%	7.65%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$356.0M	$1.173B	$315.0M
YoY Change	13.02%	-0.26%	4.3%
% of Gross Profit	40.36%	32.74%	29.19%
Operating Expenses	$16.00M	$215.0M
YoY Change		-31.75%
Operating Profit	$866.0M	$3.368B
YoY Change		-9.58%
Interest Expense	-$332.0M	$1.544B
YoY Change		0.92%
% of Operating Profit	-38.34%	45.84%
Other Income/Expense, Net	$0.00	$82.00M
YoY Change		-4.65%
Pretax Income	$538.0M	-$1.921B
YoY Change		266.6%
Income Tax	$171.0M	$685.0M
% Of Pretax Income	31.78%
Net Earnings	$175.0M	-$912.0M	-$209.0M
YoY Change	-183.73%	-1672.41%	-52.06%
Net Earnings / Revenue	4.0%	-5.31%	-5.0%
Basic Earnings Per Share	$0.23	-$1.21	-$0.27
Diluted Earnings Per Share	$0.23	-$1.21	-$0.27
COMMON SHARES
Basic Shares Outstanding	744.0M shares	755.0M shares	767.5M shares
Diluted Shares Outstanding		755.0M shares

Balance Sheet

Concept	2012 Q4	2012	2011 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.596B	$2.593B	$2.980B
YoY Change	-12.89%	-15.01%	-27.67%
Cash & Equivalents	$1.900B	$1.900B	$1.624B
Short-Term Investments	$696.0M	$693.0M	$1.356B
Other Short-Term Assets	$1.072B	$2.614B	$1.560B
YoY Change	-31.28%	-9.27%	52.34%
Inventory	$719.0M	$719.0M	$775.0M
Prepaid Expenses	$222.0M		$157.0M
Receivables	$2.539B	$2.539B	$2.522B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$8.465B	$8.465B	$9.229B
YoY Change	-8.28%	-8.28%	-2.3%
LONG-TERM ASSETS
Property, Plant & Equipment	$24.64B	$24.64B	$25.00B
YoY Change	-1.46%	-1.46%	9.69%
Goodwill	$1.999B		$3.820B
YoY Change	-47.67%		200.55%
Intangibles	$324.0M		$545.0M
YoY Change	-40.55%		21.65%
Long-Term Investments	$1.196B	$1.196B	$1.422B
YoY Change	-15.89%	-15.89%	7.73%
Other Assets	$2.188B	$5.211B	$2.346B
YoY Change	-6.73%	-2.21%	22.51%
Total Long-Term Assets	$33.37B	$33.37B	$36.12B
YoY Change	-7.62%	-7.62%	16.26%
TOTAL ASSETS
Total Short-Term Assets	$8.465B	$8.465B	$9.229B
Total Long-Term Assets	$33.37B	$33.37B	$36.12B
Total Assets	$41.83B	$41.83B	$45.35B
YoY Change	-7.75%	-7.75%	11.94%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.545B	$2.545B	$2.008B
YoY Change	26.74%	26.74%	1.01%
Accrued Expenses	$2.347B	$2.456B	$3.389B
YoY Change	-30.75%	-33.91%	38.27%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$2.505B	$2.505B	$2.428B
YoY Change	3.17%	3.17%	-18.96%
Total Short-Term Liabilities	$8.319B	$8.319B	$8.438B
YoY Change	-1.41%	-1.41%	4.62%
LONG-TERM LIABILITIES
Long-Term Debt	$18.22B	$18.22B	$19.59B
YoY Change	-7.02%	-7.02%	24.06%
Other Long-Term Liabilities	$3.523B	$6.524B	$3.111B
YoY Change	13.24%	5.43%	22.87%
Total Long-Term Liabilities	$25.92B	$24.74B	$27.10B
YoY Change	-4.36%	-4.03%	23.34%
TOTAL LIABILITIES
Total Short-Term Liabilities	$8.319B	$8.319B	$8.438B
Total Long-Term Liabilities	$25.92B	$24.74B	$27.10B
Total Liabilities	$34.24B	$37.26B	$35.54B
YoY Change	-3.66%	-5.43%	18.31%
SHAREHOLDERS EQUITY
Retained Earnings	-$264.0M		$678.0M
YoY Change	-138.94%		9.35%
Common Stock	$8.000M		$8.000M
YoY Change	0.0%		0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$780.0M		$489.0M
YoY Change	59.51%		126.39%
Treasury Stock Shares	66.42M shares		42.39M shares
Shareholders Equity	$4.569B	$4.569B	$5.946B
YoY Change
Total Liabilities & Shareholders Equity	$41.83B	$41.83B	$45.35B
YoY Change	-7.75%	-7.75%	11.94%

Cashflow Statement

Concept	2012 Q4	2012	2011 Q4
OPERATING ACTIVITIES
Net Income	$175.0M	-$912.0M	-$209.0M
YoY Change	-183.73%	-1672.41%	-52.06%
Depreciation, Depletion And Amortization	$356.0M	$1.173B	$315.0M
YoY Change	13.02%	-0.26%	4.3%
Cash From Operating Activities	$764.0M	$2.901B	$491.0M
YoY Change	55.6%	0.59%	-54.66%
INVESTING ACTIVITIES
Capital Expenditures	-$527.0M	$2.108B	-$598.0M
YoY Change	-11.87%	-13.25%	-23.53%
Acquisitions
YoY Change
Other Investing Activities	$308.0M	$0.00	-$2.574B
YoY Change	-111.97%	-100.0%	-2992.13%
Cash From Investing Activities	-$219.0M	-$895.0M	-$3.172B
YoY Change	-93.1%	-81.76%	357.72%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$301.0M
YoY Change		7.89%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-524.0M	-$1.867B	1.065B
YoY Change	-149.2%	-232.22%	-246.29%
NET CHANGE
Cash From Operating Activities	764.0M	$2.901B	491.0M
Cash From Investing Activities	-219.0M	-$895.0M	-3.172B
Cash From Financing Activities	-524.0M	-$1.867B	1.065B
Net Change In Cash	21.00M	$139.0M	-1.616B
YoY Change	-101.3%	-122.79%	378.11%
FREE CASH FLOW
Cash From Operating Activities	$764.0M	$2.901B	$491.0M
Capital Expenditures	-$527.0M	$2.108B	-$598.0M
Free Cash Flow	$1.291B	$793.0M	$1.089B
YoY Change	18.55%	74.67%	-41.61%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012Q2	dei	Entity Public Float EntityPublicFloat	7940000000	USD
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
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CY2010	us-gaap	Payments For Advance To Affiliate PaymentsForAdvanceToAffiliate	97000000	USD
CY2010	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	75000000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1745000000	USD
CY2010	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	254000000	USD
CY2010	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-31000000	USD
CY2012	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	34000000	USD
CY2011	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	149000000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2000000	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1000000	USD
CY2010	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	35000000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	8000000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	8000000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	8525000000	USD
CY2011Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	8507000000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-264000000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	678000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2920000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2758000000	USD
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	780000000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	489000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	4569000000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	5946000000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	2945000000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	3783000000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7514000000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9729000000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	41830000000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	45346000000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	309000000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	273000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	276000000	USD
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	807573277	shares
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1200000000	shares
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1200000000	shares
CY2012Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	8465000000	USD
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	744263855	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	765186316	shares
CY2012Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	66415984	shares
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	42386961	shares
CY2012Q4	us-gaap	Land Land	1008000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	31837000000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	9723000000	USD
CY2012Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	2791000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	25913000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	25001000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	31068000000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	8944000000	USD
CY2011Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1788000000	USD
CY2011Q4	us-gaap	Land Land	1089000000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1970000000	USD
CY2012Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	751000000	USD
CY2012Q4	us-gaap	Short Term Investments ShortTermInvestments	696000000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2712000000	USD
CY2012Q4	us-gaap	Inventory Net InventoryNet	769000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	222000000	USD
CY2012Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	231000000	USD
CY2012Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1114000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	454000000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2522000000	USD
CY2011Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	477000000	USD
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1560000000	USD
CY2011Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	157000000	USD
CY2011Q4	us-gaap	Short Term Investments ShortTermInvestments	1356000000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1695000000	USD
CY2011Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	233000000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	9229000000	USD
CY2011Q4	us-gaap	Inventory Net InventoryNet	775000000	USD
CY2012Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1196000000	USD
CY2012Q4	aes	Debt Service Reserves And Other Deposits DebtServiceReservesAndOtherDeposits	565000000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	1999000000	USD
CY2012Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	429000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	996000000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2242000000	USD
CY2012Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Noncurrent AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	25000000	USD
CY2012Q4	aes	Assets Noncurrent Excluding Property Plant And Equipment AssetsNoncurrentExcludingPropertyPlantAndEquipment	7452000000	USD
CY2012Q4	us-gaap	Assets Assets	41830000000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2346000000	USD
CY2011Q4	aes	Assets Noncurrent Excluding Property Plant And Equipment AssetsNoncurrentExcludingPropertyPlantAndEquipment	11116000000	USD
CY2011Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Noncurrent AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	1392000000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	3820000000	USD
CY2011Q4	aes	Debt Service Reserves And Other Deposits DebtServiceReservesAndOtherDeposits	876000000	USD
CY2011Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	545000000	USD
CY2011Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1422000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	715000000	USD
CY2011Q4	us-gaap	Assets Assets	45346000000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	2008000000	USD
CY2011Q4	us-gaap	Interest Payable Current InterestPayableCurrent	327000000	USD
CY2011Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	3389000000	USD
CY2011Q4	aes	Non Recourse Debt Current NonRecourseDebtCurrent	2123000000	USD
CY2012	us-gaap	Electrical Distribution Revenue ElectricalDistributionRevenue	9925000000	USD
CY2011Q4	aes	Recourse Debt Current RecourseDebtCurrent	305000000	USD
CY2011Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	286000000	USD
CY2010	us-gaap	Electrical Distribution Revenue ElectricalDistributionRevenue	8910000000	USD
CY2011	us-gaap	Electrical Distribution Revenue ElectricalDistributionRevenue	9504000000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	8438000000	USD
CY2012Q4	aes	Recourse Debt Current RecourseDebtCurrent	11000000	USD
CY2012Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	2638000000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	8319000000	USD
CY2012Q4	aes	Non Recourse Debt Current NonRecourseDebtCurrent	2843000000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	295000000	USD
CY2012Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	2532000000	USD
CY2012Q4	aes	Non Recourse Debt Non Current NonRecourseDebtNonCurrent	12568000000	USD
CY2012Q4	aes	Recourse Debt Non Current RecourseDebtNonCurrent	5951000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	1238000000	USD
CY2012Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	2456000000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	3706000000	USD
CY2012Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	0	USD
CY2012Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	25919000000	USD
CY2011Q4	aes	Non Recourse Debt Non Current NonRecourseDebtNonCurrent	13412000000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	3111000000	USD
CY2011Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	27101000000	USD
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	1729000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	1321000000	USD
CY2011Q4	aes	Recourse Debt Non Current RecourseDebtNonCurrent	6180000000	USD
CY2011Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	1348000000	USD
CY2012Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Noncontrolling Interest TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest	78000000	USD
CY2011Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Noncontrolling Interest TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest	78000000	USD
CY2012	us-gaap	Electrical Generation Revenue ElectricalGenerationRevenue	8216000000	USD
CY2010	us-gaap	Electrical Generation Revenue ElectricalGenerationRevenue	6533000000	USD
CY2011	us-gaap	Electrical Generation Revenue ElectricalGenerationRevenue	7419000000	USD
CY2012	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	18141000000	USD
CY2011	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	16923000000	USD
CY2010	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	15443000000	USD
CY2012	us-gaap	Cost Of Transmission CostOfTransmission	8433000000	USD
CY2011	us-gaap	Cost Of Transmission CostOfTransmission	7134000000	USD
CY2010	us-gaap	Cost Of Transmission CostOfTransmission	6497000000	USD
CY2012	us-gaap	Electric Production Expense ElectricProductionExpense	5994000000	USD
CY2010	us-gaap	Electric Production Expense ElectricProductionExpense	5126000000	USD
CY2011	us-gaap	Electric Production Expense ElectricProductionExpense	5726000000	USD
CY2012	us-gaap	Cost Of Goods Sold Electric CostOfGoodsSoldElectric	14427000000	USD
CY2011	us-gaap	Cost Of Goods Sold Electric CostOfGoodsSoldElectric	12860000000	USD
CY2010	us-gaap	Cost Of Goods Sold Electric CostOfGoodsSoldElectric	11623000000	USD
CY2012	us-gaap	Gross Profit GrossProfit	3714000000	USD
CY2011	us-gaap	Gross Profit GrossProfit	4063000000	USD
CY2010	us-gaap	Gross Profit GrossProfit	3820000000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	301000000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	391000000	USD
CY2010	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	391000000	USD
CY2012	us-gaap	Interest Expense InterestExpense	1572000000	USD
CY2011	us-gaap	Interest Expense InterestExpense	1553000000	USD
CY2010	us-gaap	Interest Expense InterestExpense	1449000000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	349000000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	399000000	USD
CY2010	us-gaap	Investment Income Interest InvestmentIncomeInterest	407000000	USD
CY2011	us-gaap	Asset Impairment Charges AssetImpairmentCharges	173000000	USD
CY2011	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-39000000	USD
CY2012	us-gaap	Other Income OtherIncome	105000000	USD
CY2011	us-gaap	Other Income OtherIncome	149000000	USD
CY2010	us-gaap	Other Income OtherIncome	100000000	USD
CY2012	us-gaap	Nonoperating Gains Losses NonoperatingGainsLosses	219000000	USD
CY2011	us-gaap	Nonoperating Gains Losses NonoperatingGainsLosses	8000000	USD
CY2010	us-gaap	Nonoperating Gains Losses NonoperatingGainsLosses	0	USD
CY2010	us-gaap	Asset Impairment Charges AssetImpairmentCharges	304000000	USD
CY2012	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-167000000	USD
CY2012	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	1817000000	USD
CY2011	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	17000000	USD
CY2010	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	21000000	USD
CY2012	us-gaap	Asset Impairment Charges AssetImpairmentCharges	73000000	USD
CY2010	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-33000000	USD
CY2012	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	50000000	USD
CY2011	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	82000000	USD
CY2010	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	7000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	314000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2211000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1890000000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	708000000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	634000000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	593000000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	34000000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2000000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	184000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-360000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1575000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1481000000	USD
CY2012	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	-13000000	USD
CY2011	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	-131000000	USD
CY2010	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	-486000000	USD
CY2012	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	16000000	USD
CY2011	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	86000000	USD
CY2010	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	64000000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	-357000000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	1530000000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	1059000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	555000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	1083000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	985000000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	389000000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	65000000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	555000000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1472000000	USD
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1050000000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	-912000000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	58000000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	9000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.21
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.63
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.64
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.56
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.63
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.21
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.07
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.01
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.21
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.63
CY2010	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.64
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.56
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.63
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.21
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.07
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.01
CY2010	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	496000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	492000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-915000000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	3000000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-434000000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-487000000	USD
CY2012	us-gaap	Discontinued Operation Tax Effect Of Income Loss From Discontinued Operation During Phase Out Period DiscontinuedOperationTaxEffectOfIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriod	3000000	USD
CY2011	us-gaap	Discontinued Operation Tax Effect Of Income Loss From Discontinued Operation During Phase Out Period DiscontinuedOperationTaxEffectOfIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriod	-26000000	USD
CY2010	us-gaap	Discontinued Operation Tax Effect Of Income Loss From Discontinued Operation During Phase Out Period DiscontinuedOperationTaxEffectOfIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriod	-284000000	USD
CY2012	us-gaap	Discontinued Operation Tax Effect Of Income Loss From Disposal Of Discontinued Operation DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation	68000000	USD
CY2011	us-gaap	Discontinued Operation Tax Effect Of Income Loss From Disposal Of Discontinued Operation DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation	300000000	USD
CY2010	us-gaap	Discontinued Operation Tax Effect Of Income Loss From Disposal Of Discontinued Operation DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation	132000000	USD
CY2012	us-gaap	Other Expenses OtherExpenses	93000000	USD
CY2011	us-gaap	Other Expenses OtherExpenses	153000000	USD
CY2010	us-gaap	Other Expenses OtherExpenses	232000000	USD
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-564000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	43000000	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-247000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-731000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationNetOfTax	-37000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-1074000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	1000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-1088000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1000000	USD
CY2012	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	24000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-210000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-14000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-177000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-134000000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	-1000000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-587000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-296000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-137000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationNetOfTax	-188000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	781000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-749000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-379000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-223000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-210000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1098000000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	13000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-317000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	2000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-1000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-242000000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-484000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-80000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	610000000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	23000000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-5000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationNetOfTax	-142000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1496000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax	-41000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-111000000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	468000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-88000000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-242000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	388000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-5000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	437000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-162000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	0	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1108000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	35000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax	-56000000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	300000000	USD
CY2012	aes	Other Comprehensive Income Defined Benefit Plans Net Net Prior Service Costs Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetNetPriorServiceCostsArisingDuringPeriodTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	-15000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax	-22000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2011	aes	Other Comprehensive Income Defined Benefit Plans Net Net Prior Service Costs Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetNetPriorServiceCostsArisingDuringPeriodTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	18000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	-6000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	108000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	117000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	57000000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	3000000	USD
CY2010	aes	Other Comprehensive Income Defined Benefit Plans Net Net Prior Service Costs Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetNetPriorServiceCostsArisingDuringPeriodTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	-11000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	-12000000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	56000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	0	USD
CY2012	us-gaap	Use Of Estimates UseOfEstimates	<p style='margin-top:6pt; margin-bottom:6pt'><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:27.35px;">USE OF ESTIMATES</font><font style="font-family:Times New Roman;font-size:10pt;">—The preparation of these consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires the Company to make estimates and assumptions that affect reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements, as well as the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Items subject to such estimates and assumptions include: the carrying amount and estimated useful lives of long-lived assets; impairment of goodwill, long-lived assets and equity method investments; valuation allowances for receivables and deferred tax assets; the recoverability of deferred regulatory assets; the estimation of deferred regulatory liabilities; the fair value of financial instruments; the fair value of assets and liabilities acquired in a business combination accounted for under the purchase method; the determination of noncontrolling interest using the hypothetical liquidation at book value (“HLBV”) method for certain wind generation partnerships; pension liabilities; environmental liabilities; and potential litigation claims and settlements. </font></p>
CY2012	us-gaap	Guarantees Indemnifications And Warranties Policies GuaranteesIndemnificationsAndWarrantiesPolicies	<p style='margin-top:6pt; margin-bottom:6pt'><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:27.35px;">GUARANTOR ACCOUNTING</font><font style="font-family:Times New Roman;font-size:10pt;">—</font><font style="font-family:Times New Roman;font-size:10pt;">A</font><font style="font-family:Times New Roman;font-size:10pt;">t the inception of a guarantee, the Company records the fair value of a guarantee as a liability, with the offset dependent on the circumstances under which the guarantee was issued. </font><font style="font-family:Times New Roman;font-size:10pt;">The Company does not recognize guarantees given to third parties for its subsidiaries' performance.</font></p><p style='margin-top:6pt; margin-bottom:6pt'> </p>
CY2012Q4	us-gaap	Transfers Accounted For As Secured Borrowings Assets Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount	50000000	USD
CY2012Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	373000000	USD
CY2011Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	434000000	USD
CY2012Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	396000000	USD
CY2011Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	341000000	USD
CY2012Q4	aes	Property Plant And Equipment Electric Generation Distribution Assets And Other Net Related To Discontinued Operations PropertyPlantAndEquipmentElectricGenerationDistributionAssetsAndOtherNetRelatedToDiscontinuedOperations	0	USD
CY2011Q4	aes	Property Plant And Equipment Electric Generation Distribution Assets And Other Net Related To Discontinued Operations PropertyPlantAndEquipmentElectricGenerationDistributionAssetsAndOtherNetRelatedToDiscontinuedOperations	1200000000	USD
CY2011Q4	aes	Property Plant And Equipment Electric Generation Distribution Assets And Other Net Held For Sale PropertyPlantAndEquipmentElectricGenerationDistributionAssetsAndOtherNetHeldForSale	22124000000	USD
CY2011	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	6000000	USD
CY2011	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-1000000	USD
CY2012Q4	aes	Property Plant And Equipment Electric Generation Distribution Assets And Other Net Held For Sale PropertyPlantAndEquipmentElectricGenerationDistributionAssetsAndOtherNetHeldForSale	22114000000	USD
CY2011	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	176000000	USD
CY2012	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	111000000	USD
CY2010	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	188000000	USD
CY2012	us-gaap	Depreciation Depreciation	1251000000	USD
CY2011	us-gaap	Depreciation Depreciation	1154000000	USD
CY2010	us-gaap	Depreciation Depreciation	1010000000	USD
CY2010	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	50000000	USD
CY2011	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	46000000	USD
CY2012	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	48000000	USD
CY2012Q4	aes	Property Plant And Equipment Net Of Accumulated Depreciation Mortgaged Pledged Or Subject To Liens PropertyPlantAndEquipmentNetOfAccumulatedDepreciationMortgagedPledgedOrSubjectToLiens	16000000000	USD
CY2012Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	153000000	USD
CY2011Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	156000000	USD
CY2011Q4	aes	Property Plant And Equipment Net Of Accumulated Depreciation Mortgaged Pledged Or Subject To Liens PropertyPlantAndEquipmentNetOfAccumulatedDepreciationMortgagedPledgedOrSubjectToLiens	15200000000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	88000000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	1000000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	117000000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	3000000	USD
CY2012	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	7000000	USD
CY2012	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	3000000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	128000000	USD
CY2011	us-gaap	Asset Retirement Obligation Foreign Currency Translation AssetRetirementObligationForeignCurrencyTranslation	-1000000	USD
CY2012	us-gaap	Asset Retirement Obligation Foreign Currency Translation AssetRetirementObligationForeignCurrencyTranslation	1000000	USD
CY2012Q4	aes	Asset Retirement Obligation Liabilities Assumed In Business Combination AssetRetirementObligationLiabilitiesAssumedInBusinessCombination	0	USD
CY2011Q4	aes	Asset Retirement Obligation Liabilities Assumed In Business Combination AssetRetirementObligationLiabilitiesAssumedInBusinessCombination	24000000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	1000000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	-3000000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	0	USD
CY2012Q4	aes	Generation Capacity Mega Watts1 GenerationCapacityMegaWatts1	2465	MW
CY2011Q4	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesValue	-148000000	USD
CY2012	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesGainLossIncludedInEarnings	12000000	USD
CY2012	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesGainLossIncludedInOtherComprehensiveIncome	-26000000	USD
CY2012	aes	Fair Value Measurments With Unobservable Inputs Reconciliation Recurring Basis Regulatory Assets Liabilities FairValueMeasurmentsWithUnobservableInputsReconciliationRecurringBasisRegulatoryAssetsLiabilities	9000000	USD
CY2012	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Derivative Assets Liabilities Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeAssetsLiabilitiesSettlements	-36000000	USD
CY2012	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Transfers In FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesTransfersIn	-285000000	USD
CY2012Q4	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesValue	-396000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	681000000	USD
CY2012Q4	us-gaap	Trading Securities Fair Value Disclosure TradingSecuritiesFairValueDisclosure	12000000	USD
CY2012Q4	aes	Derivative Assets Fair Value Disclosure DerivativeAssetsFairValueDisclosure	100000000	USD
CY2012Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	793000000	USD
CY2012Q4	us-gaap	Derivative Financial Instruments Liabilities Fair Value Disclosure DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure	657000000	USD
CY2012Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	657000000	USD
CY2011Q4	us-gaap	Derivative Financial Instruments Liabilities Fair Value Disclosure DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure	690000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	1340000000	USD
CY2011Q4	us-gaap	Trading Securities Fair Value Disclosure TradingSecuritiesFairValueDisclosure	12000000	USD
CY2011Q4	aes	Derivative Assets Fair Value Disclosure DerivativeAssetsFairValueDisclosure	120000000	USD
CY2011Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	690000000	USD
CY2011Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1472000000	USD
CY2012Q4	aes	Fair Value Percent Threshold For Significant Assumption FairValuePercentThresholdForSignificantAssumption	0.10	pure
CY2012	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Transfers Out FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesTransfersOut	-6000000	USD
CY2012	aes	Fair Value Derivative Assets Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Other Income FairValueDerivativeAssetsLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInOtherIncome	18000000	USD
CY2010Q4	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesValue	49000000	USD
CY2011	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesGainLossIncludedInEarnings	-43000000	USD
CY2011	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesGainLossIncludedInOtherComprehensiveIncome	-50000000	USD
CY2011	aes	Fair Value Measurments With Unobservable Inputs Reconciliation Recurring Basis Regulatory Assets Liabilities FairValueMeasurmentsWithUnobservableInputsReconciliationRecurringBasisRegulatoryAssetsLiabilities	8000000	USD
CY2011	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Derivative Assets Liabilities Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeAssetsLiabilitiesSettlements	-2000000	USD
CY2011	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Transfers In FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesTransfersIn	-117000000	USD
CY2011	aes	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Transfers Out FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesTransfersOut	-3000000	USD
CY2011	aes	Fair Value Derivative Assets Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Other Income FairValueDerivativeAssetsLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInOtherIncome	-44000000	USD
CY2012Q4	us-gaap	Assets Fair Value Disclosure Nonrecurring AssetsFairValueDisclosureNonrecurring	35000000	USD
CY2012Q4	aes	Available For Sale Securities Common Stock Amortized Cost AvailableForSaleSecuritiesCommonStockAmortizedCost	0	USD
CY2011Q4	aes	Available For Sale Mutual Funds AvailableForSaleMutualFunds	67000000	USD
CY2011Q4	us-gaap	Trading Securities TradingSecurities	12000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	68000000	USD
CY2011Q4	aes	Available For Sale Other Debt Securities AvailableForSaleOtherDebtSecurities	0	USD
CY2011Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	1340000000	USD
CY2011Q4	aes	Available For Sale Unsecured Debentures AvailableForSaleUnsecuredDebentures	665000000	USD
CY2011Q4	aes	Trading Securities Mutual Funds TradingSecuritiesMutualFunds	12000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1272000000	USD
CY2011Q4	aes	Available For Sale Common Stock AvailableForSaleCommonStock	1000000	USD
CY2011Q4	aes	Available For Sale Certificates Of Deposit AvailableForSaleCertificatesOfDeposit	576000000	USD
CY2011Q4	aes	Available For Sale Government Debt Securities AvailableForSaleGovernmentDebtSecurities	31000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	56000000	USD
CY2012Q4	us-gaap	Trading Securities TradingSecurities	12000000	USD
CY2012Q4	aes	Available For Sale Mutual Funds AvailableForSaleMutualFunds	56000000	USD
CY2012Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	681000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	625000000	USD
CY2012Q4	aes	Available For Sale Certificates Of Deposit AvailableForSaleCertificatesOfDeposit	143000000	USD
CY2012Q4	aes	Available For Sale Unsecured Debentures AvailableForSaleUnsecuredDebentures	448000000	USD
CY2012Q4	aes	Trading Securities Mutual Funds TradingSecuritiesMutualFunds	12000000	USD
CY2012Q4	aes	Available For Sale Government Debt Securities AvailableForSaleGovernmentDebtSecurities	34000000	USD
CY2012Q4	aes	Available For Sale Other Debt Securities AvailableForSaleOtherDebtSecurities	0	USD
CY2012Q4	aes	Available For Sale Common Stock AvailableForSaleCommonStock	0	USD
CY2012Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	3000000	USD
CY2011Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	4000000	USD
CY2012Q4	us-gaap	Marketable Securities MarketableSecurities	696000000	USD
CY2011Q4	us-gaap	Marketable Securities MarketableSecurities	1356000000	USD
CY2011Q4	aes	Available For Sale Securities Common Stock Amortized Cost AvailableForSaleSecuritiesCommonStockAmortizedCost	4000000	USD
CY2012Q4	aes	Available For Sale And Trading Securities Total AvailableForSaleAndTradingSecuritiesTotal	693000000	USD
CY2011Q4	aes	Available For Sale And Trading Securities Total AvailableForSaleAndTradingSecuritiesTotal	1352000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	2000000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	6119000000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	2000000	USD
CY2010	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	5852000000	USD
CY2012	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	6489000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	1000000	USD
CY2012	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	2000000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	3000000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	2000000	USD
CY2012	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	-1000000	USD
CY2011	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	1000000	USD
CY2010	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	-1000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	0	USD
CY2012Q4	us-gaap	Derivative Assets DerivativeAssets	100000000	USD
CY2012Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	657000000	USD
CY2011Q4	us-gaap	Derivative Assets DerivativeAssets	120000000	USD
CY2011Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	690000000	USD
CY2012Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	14000000	USD
CY2012Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	186000000	USD
CY2012Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	471000000	USD
CY2012Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	86000000	USD
CY2011Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	153000000	USD
CY2011Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	537000000	USD
CY2011Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	71000000	USD
CY2011Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	49000000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-169000000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-233000000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-487000000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-159000000	USD
CY2010	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-298000000	USD
CY2010	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-203000000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-4000000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-12000000	USD
CY2010	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-10000000	USD
CY2012	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-149000000	USD
CY2011	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-20000000	USD
CY2010	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-12000000	USD
CY2012Q4	us-gaap	Notes Receivable Net NotesReceivableNet	239000000	USD
CY2011Q4	us-gaap	Notes Receivable Net NotesReceivableNet	295000000	USD
CY2012Q4	aes	Undistributed Earnings Of Minority Owned Affiliates Included In Retained Earnings UndistributedEarningsOfMinorityOwnedAffiliatesIncludedInRetainedEarnings	150000000	USD
CY2010	aes	Distributions Received From Minority Owned Affiliates DistributionsReceivedFromMinorityOwnedAffiliates	49000000	USD
CY2012Q4	aes	Basis Difference Between Carrying Amount And Investment BasisDifferenceBetweenCarryingAmountAndInvestment	37000000	USD
CY2012	aes	Distributions Received From Minority Owned Affiliates DistributionsReceivedFromMinorityOwnedAffiliates	22000000	USD
CY2011	aes	Distributions Received From Minority Owned Affiliates DistributionsReceivedFromMinorityOwnedAffiliates	36000000	USD
CY2010Q4	us-gaap	Goodwill Gross GoodwillGross	1414000000	USD
CY2010Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	-143000000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	1271000000	USD
CY2011	aes	Goodwill Translation Adjustments And Other GoodwillTranslationAdjustmentsAndOther	-10000000	USD
CY2011Q4	us-gaap	Goodwill Gross GoodwillGross	3980000000	USD
CY2011Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	-160000000	USD
CY2012	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2012	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	0	USD
CY2012	aes	Goodwill Translation Adjustments And Other GoodwillTranslationAdjustmentsAndOther	-4000000	USD
CY2012Q4	us-gaap	Goodwill Gross GoodwillGross	3959000000	USD
CY2012Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	-1960000000	USD
CY2011	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2576000000	USD
CY2012Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	81000000	USD
CY2011Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	64000000	USD
CY2012Q4	aes	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	705000000	USD
CY2011Q4	aes	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	709000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	624000000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	645000000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	481000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	348000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	32000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	24000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	25000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	17000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	16000000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	119000000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	36000000	USD
CY2010	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14000000	USD
CY2012Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	408000000	USD
CY2011Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	391000000	USD
CY2012Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	871000000	USD
CY2012Q4	aes	Term Convertible Preferred Securities Common Stock Conversion Ratio TermConvertiblePreferredSecuritiesCommonStockConversionRatio	1.4216	pure
CY2011Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	847000000	USD
CY2012Q4	aes	Term Convertible Preferred Securities Dividend Rate TermConvertiblePreferredSecuritiesDividendRate	0.0675	pure
CY2012Q4	aes	Term Convertible Preferred Securities Number Of Quarters Dividends May Be Deferred TermConvertiblePreferredSecuritiesNumberOfQuartersDividendsMayBeDeferred	20	integer
CY2012Q4	aes	Current Redemption Value Of Term Convertible Preferred Securities Issued By Special Purpose Business Trust CurrentRedemptionValueOfTermConvertiblePreferredSecuritiesIssuedBySpecialPurposeBusinessTrust	50
CY2012Q4	aes	Term Convertible Preferred Securities Common Stock Conversion Price Per Share TermConvertiblePreferredSecuritiesCommonStockConversionPricePerShare	35.17
CY2012Q4	aes	Term Convertible Preferred Securities Issued By Special Purpose Business Trust TermConvertiblePreferredSecuritiesIssuedBySpecialPurposeBusinessTrust	10350000	integer
CY2012Q4	us-gaap	Regulatory Assets RegulatoryAssets	1279000000	USD
CY2011Q4	us-gaap	Regulatory Assets RegulatoryAssets	1238000000	USD
CY2012Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	388000000	USD
CY2011Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	733000000	USD
CY2012Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1702000000	USD
CY2011Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1279000000	USD
CY2012Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	2090000000	USD
CY2011Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	2012000000	USD
CY2012Q4	aes	Brazil Tariff Recoveries Number Of Installments BrazilTariffRecoveriesNumberOfInstallments	24	integer
CY2012Q4	aes	Non Recourse Debt Total NonRecourseDebtTotal	15411000000	USD
CY2011Q4	aes	Non Recourse Debt Total NonRecourseDebtTotal	15535000000	USD
CY2012Q4	aes	Interest Rate Derivatives Range Of Expiration Dates InterestRateDerivativesRangeOfExpirationDates	These agreements expire at various dates from 2013 through 2030.
CY2012Q4	aes	Debt Default Amount DebtDefaultAmount	1400000000	USD
CY2012Q4	aes	Recourse Debt Total RecourseDebtTotal	5962000000	USD
CY2011Q4	aes	Recourse Debt Total RecourseDebtTotal	6485000000	USD
CY2012	us-gaap	Debt Instrument Restrictive Covenants DebtInstrumentRestrictiveCovenants	Recourse Debt Covenants and Guarantees Certain of the Company’s obligations under the senior secured credit facility are guaranteed by its direct subsidiaries through which the Company owns its interests in the AES Shady Point, AES Hawaii, and AES Warrior Run. The Company’s obligations under the senior secured credit facility are, subject to certain exceptions, secured by: (i)         all of the capital stock of domestic subsidiaries owned directly by the Company and 65% of the capital stock of certain foreign subsidiaries owned directly or indirectly by the Company; and (ii)         certain intercompany receivables, certain intercompany notes and certain intercompany tax sharing agreements. The senior secured credit facility is subject to mandatory prepayment under certain circumstances, including the sale of a guarantor subsidiary. In such a situation, the net cash proceeds from the sale of a Guarantor or any of its subsidiaries must be applied pro rata to repay the term loan using 60% of net cash proceeds, reduced to 50% when and if the parent’s recourse debt to cash flow ratio is less than 5:1. The lenders have the option to waive their pro rata redemption. The senior secured credit facility contains customary covenants and restrictions on the Company’s ability to engage in certain activities, including, but not limited to, limitations on other indebtedness, liens, investments and guarantees; limitations on restricted payments such as shareholder dividends and equity repurchases; restrictions on mergers and acquisitions, sales of assets, leases, transactions with affiliates and off-balance sheet or derivative arrangements; and other financial reporting requirements. The senior secured credit facility also contains financial covenants requiring the Company to maintain certain financial ratios including a cash flow to interest coverage ratio, calculated quarterly, which provides that a minimum ratio of the Company’s adjusted operating cash flow to the Company’s interest charges related to recourse debt of 1.3× must be maintained at all times and a recourse debt to cash flow ratio, calculated quarterly, which provides that the ratio of the Company’s total recourse debt to the Company’s adjusted operating cash flow must not exceed a maximum of 7.5× at December 31, 2012.   The terms of the Company’s senior unsecured notes and senior secured credit facility contain certain covenants including, without limitation, limitation on the Company’s ability to incur liens or enter into sale and leaseback transactions.
CY2011Q4	aes	Restricted Cash And Debt Service Reserves RestrictedCashAndDebtServiceReserves	594000000	USD
CY2012	aes	Term Convertible Preferred Securities Issued By Special Purpose Business Trust Total Proceeds TermConvertiblePreferredSecuritiesIssuedBySpecialPurposeBusinessTrustTotalProceeds	517000000	USD
CY2012Q4	aes	Junior Subordinated Convertible Debentures Purchased With Proceeds Fromissuance Of Term Convertible Preferred Securities JuniorSubordinatedConvertibleDebenturesPurchasedWithProceedsFromissuanceOfTermConvertiblePreferredSecurities	517000000	USD
CY2012Q4	aes	Term Convertible Preferred Securities Issued By Special Purpose Business Trust Par Per Share TermConvertiblePreferredSecuritiesIssuedBySpecialPurposeBusinessTrustParPerShare	3.375
CY2011Q4	aes	Non Recourse Debt Held For Sale Or Discontinued Operations NonRecourseDebtHeldForSaleOrDiscontinuedOperations	1300000000	USD
CY2012Q4	us-gaap	Notional Amount Of Interest Rate Derivatives NotionalAmountOfInterestRateDerivatives	3600000000	USD
CY2012Q4	aes	Interest Rate Swaps Range Of Interest Rates Fixed Minimum InterestRateSwapsRangeOfInterestRatesFixedMinimum	0.0433	pure
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	138000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	79000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	763000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	12000000	USD
CY2012Q4	aes	Interest Rate Swaps Range Of Interest Rates Fixed Maximum InterestRateSwapsRangeOfInterestRatesFixedMaximum	0.0870	pure
CY2012Q4	aes	Interest Rate Options Range Of Interest Rates Fixed Minimum InterestRateOptionsRangeOfInterestRatesFixedMinimum	0.0653	pure
CY2012Q4	aes	Interest Rate Options Range Of Interest Rates Fixed Maximum InterestRateOptionsRangeOfInterestRatesFixedMaximum	0.0875	pure
CY2012Q4	aes	Construction Line Of Credit Facility Remaining Borrowing Capacity ConstructionLineOfCreditFacilityRemainingBorrowingCapacity	1200000000	USD
CY2012Q4	aes	Other Line Of Credit Facility Remaining Borrowing Capacity OtherLineOfCreditFacilityRemainingBorrowingCapacity	1600000000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.1353	pure
CY2012Q4	aes	Restricted Cash And Debt Service Reserves RestrictedCashAndDebtServiceReserves	612000000	USD
CY2012Q4	aes	Restricted Net Assets RestrictedNetAssets	1700000000	USD
CY2012Q4	aes	Maximum Shares Parent Common Stock Issuable Upon Conversion MaximumSharesParentCommonStockIssuableUponConversion	14700000	shares
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	53000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	51000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	48000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	47000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	47000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	517000000	USD
CY2012	aes	Operating Lease And Rental Expense OperatingLeaseAndRentalExpense	58000000	USD
CY2011	aes	Operating Lease And Rental Expense OperatingLeaseAndRentalExpense	63000000	USD
CY2010	aes	Operating Lease And Rental Expense OperatingLeaseAndRentalExpense	56000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	12000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	11000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	11000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	11000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	160000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	217000000	USD
CY2012Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	94000000	USD
CY2011Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	95000000	USD
CY2012	us-gaap	Guarantee Obligations Term GuaranteeObligationsTerm	The expiration dates of these guarantees vary from less than one year to more than 14 years.
CY2012Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	14000000	USD
CY2012Q4	us-gaap	Loss Contingency Range Of Possible Loss Maximum LossContingencyRangeOfPossibleLossMaximum	1600000000	USD
CY2012Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	321000000	USD
CY2011Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	363000000	USD
CY2012Q4	us-gaap	Loss Contingency Range Of Possible Loss Minimum LossContingencyRangeOfPossibleLossMinimum	881000000	USD
CY2012	aes	Defined Contribution Plan Contributions DefinedContributionPlanContributions	21000000	USD
CY2011	aes	Defined Contribution Plan Contributions DefinedContributionPlanContributions	22000000	USD
CY2010	aes	Defined Contribution Plan Contributions DefinedContributionPlanContributions	22000000	USD
CY2012Q4	aes	Defined Benefit Plan Number Of Plans Disclosure DefinedBenefitPlanNumberOfPlansDisclosure	31	integer
CY2012	aes	Defined Benefit Plan Effect Of One Percent Increase In Discount Rate On Pension Expense DefinedBenefitPlanEffectOfOnePercentIncreaseInDiscountRateOnPensionExpense	-48000000	USD
CY2012	aes	Defined Benefit Plan Effect Of One Percent Decrease In Discount Rate On Pension Expense DefinedBenefitPlanEffectOfOnePercentDecreaseInDiscountRateOnPensionExpense	38000000	USD
CY2012	aes	Defined Benefit Plan Effect Of One Percent Increase In Rate Of Return On Pension Expense DefinedBenefitPlanEffectOfOnePercentIncreaseInRateOfReturnOnPensionExpense	-47000000	USD
CY2012	aes	Defined Benefit Plan Effect Of One Percent Decrease In Rate Of Return On Pension Expense DefinedBenefitPlanEffectOfOnePercentDecreaseInRateOfReturnOnPensionExpense	47000000	USD
CY2012	aes	Income From Continuing Operations Before Taxes Attributable To Noncontrolling Interests IncomeFromContinuingOperationsBeforeTaxesAttributableToNoncontrollingInterests	817000000	USD
CY2012	aes	Pre Tax Contribution PreTaxContribution	-469000000	USD
CY2012	aes	Unrealized Foreign Currency Gains Losses UnrealizedForeignCurrencyGainsLosses	18000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	2057000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	481000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	382000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	257000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	534000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	1967000000	USD
CY2011	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	0	USD
CY2011	aes	Net Gain On Sale From Stock Issuance NetGainOnSaleFromStockIssuance	19000000	USD
CY2011	aes	Net Transfers To From Noncontrolling Interests NetTransfersToFromNoncontrollingInterests	19000000	USD
CY2012	us-gaap	Factors Used To Identify Entitys Reportable Segments FactorsUsedToIdentifyEntitysReportableSegments	17. SEGMENT AND GEOGRAPHIC INFORMATION During the fourth quarter of 2012, the Company completed the restructuring of its operational management and reporting process. The segment reporting structure uses the Company’s management reporting structure as its foundation to reflect how the Company manages the business internally with further aggregation by geographic regions to provide better socio-political-economic understanding of our business. The management reporting structure is organized along six strategic business units (“SBUs”) – led by our Chief Operating Officer (“COO”), who in turn reports to our Chief Executive Officer (“CEO”). Upon the application of the accounting guidance for segment reporting, the Company has identified eight reportable segments based on the six strategic business units. All prior period results have been retrospectively revised to reflect the new segment reporting structure which includes: US – Generation; US – Utilities; Andes – Generation; Brazil – Generation; Brazil – Utilities; MCAC – Generation; EMEA – Generation; Asia – Generation Corporate and Other— The Company’s EMEA and MCAC Utilities operating segments are reported within “Corporate and Other” because they do not meet the criteria to allow for aggregation with another operating segment or the quantitative thresholds that would require separate disclosure under the segment reporting accounting guidance. None of these operating segments are currently material to our presentation of reportable segments, individually or in the aggregate. AES Solar and certain other unconsolidated businesses are accounted for using the equity method of accounting; therefore, their operating results are included in “Net Equity in Earnings of Affiliates” on the face of the Consolidated Statements of Operations, not in revenue or adjusted PTC. “Corporate and Other” also includes corporate overhead costs which are not directly associated with the operations of our eight reportable segments and other intercompany charges such as self-insurance premiums which are fully eliminated in consolidation. During the fourth quarter 2012, the Company changed its primary segment performance measure from adjusted gross margin to adjusted pre-tax contribution (“Adjusted PTC”).   Adjusted PTC, a non-GAAP measure, is defined by the Company as pre-tax income from continuing operations attributable to AES excluding unrealized gains or losses related to derivative transactions, unrealized foreign currency gains or losses, significant gains or losses due to dispositions and acquisitions of business interests, significant losses due to impairments and costs due to the early retirement of debt. The Company has concluded that Adjusted PTC best reflects the underlying business performance of the Company and is the most relevant measure considered in the Company’s internal evaluation of the financial performance of its segments.  Additionally, given its large number of businesses and complexity, the Company has also concluded that Adjusted PTC is a more transparent measure that better assists the investor in determining which businesses have the greatest impact on the overall Company results.   Total revenue includes inter-segment revenue related to the transfer of electricity from generation plants to utilities within Brazil. No material inter-segment revenue relationships exist between other segments. Corporate allocations include certain self-insurance activities which are reflected within segment adjusted PTC. All intra-segment activity has been eliminated with respect to revenue and adjusted PTC within the segment. Inter-segment activity has been eliminated within the total consolidated results. Asset information for businesses that were discontinued or classified as held for sale as of December 31, 2012 is segregated and is shown in the line “Discontinued Businesses” in the accompanying segment tables. The tables below present the breakdown of reportable segment balance sheet and income statement data as of and for the years ended December 31, 2012 through 2010:
CY2010	us-gaap	Revenues Revenues	15443000000	USD
CY2012	us-gaap	Revenues Revenues	18141000000	USD
CY2011	us-gaap	Revenues Revenues	16923000000	USD
CY2012	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	19232000000	USD
CY2011	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	18115000000	USD
CY2010	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	16502000000	USD
CY2011	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	24790384	shares
CY2011	aes	Treasury Stock Value Acquired Cost Method Excluding Commissions TreasuryStockValueAcquiredCostMethodExcludingCommissions	301000000	USD
CY2011	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	12.16
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	58715189	shares
	aes	Treasury Stock Value Acquired Cost Method Excluding Commissions TreasuryStockValueAcquiredCostMethodExcludingCommissions	680000000	USD
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	11.58
CY2012	aes	Stock Repurchase Program Increase In Authorized Amount StockRepurchaseProgramIncreaseInAuthorizedAmount	300000000	USD
CY2012	aes	Net Gain On Sale From Stock Issuance NetGainOnSaleFromStockIssuance	7000000	USD
CY2012	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	-4000000	USD
CY2012	aes	Net Transfers To From Noncontrolling Interests NetTransfersToFromNoncontrollingInterests	11000000	USD
CY2012	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	-1091000000	USD
CY2011	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	-1192000000	USD
CY2010	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	-1059000000	USD
CY2012	aes	Segment Reporting Information Adjusted Pre Tax Contribution SegmentReportingInformationAdjustedPreTaxContribution	1377000000	USD
CY2012	aes	Segment Reporting Information Intersegment Adjusted Pre Tax Contribution SegmentReportingInformationIntersegmentAdjustedPreTaxContribution	0	USD
CY2012	aes	Segment Reporting Information Adjusted Pre Tax Contribution From External Customers SegmentReportingInformationAdjustedPreTaxContributionFromExternalCustomers	1377000000	USD
CY2011	aes	Segment Reporting Information Adjusted Pre Tax Contribution From External Customers SegmentReportingInformationAdjustedPreTaxContributionFromExternalCustomers	1078000000	USD
CY2011	aes	Segment Reporting Information Adjusted Pre Tax Contribution SegmentReportingInformationAdjustedPreTaxContribution	1078000000	USD
CY2011	aes	Segment Reporting Information Intersegment Adjusted Pre Tax Contribution SegmentReportingInformationIntersegmentAdjustedPreTaxContribution	0	USD
CY2010	aes	Segment Reporting Information Adjusted Pre Tax Contribution From External Customers SegmentReportingInformationAdjustedPreTaxContributionFromExternalCustomers	955000000	USD
CY2010	aes	Segment Reporting Information Intersegment Adjusted Pre Tax Contribution SegmentReportingInformationIntersegmentAdjustedPreTaxContribution	0	USD
CY2010	aes	Segment Reporting Information Adjusted Pre Tax Contribution SegmentReportingInformationAdjustedPreTaxContribution	955000000	USD
CY2012	aes	Dispositions Acquisitions Gains DispositionsAcquisitionsGains	206000000	USD
CY2012	aes	Impairment Losses ImpairmentLosses	-1936000000	USD
CY2012	aes	Debt Retirement Losses DebtRetirementLosses	-16000000	USD
CY2012	aes	Unrealized Derivatives Gains Losses UnrealizedDerivativesGainsLosses	-118000000	USD
CY2011	aes	Unrealized Derivatives Gains Losses UnrealizedDerivativesGainsLosses	-11000000	USD
CY2011	aes	Impairment Losses ImpairmentLosses	-271000000	USD
CY2011	aes	Debt Retirement Losses DebtRetirementLosses	-46000000	USD
CY2011	aes	Unrealized Foreign Currency Gains Losses UnrealizedForeignCurrencyGainsLosses	-38000000	USD
CY2011	aes	Pre Tax Contribution PreTaxContribution	712000000	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.38	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0	pure
CY2011	aes	Income From Continuing Operations Before Taxes Attributable To Noncontrolling Interests IncomeFromContinuingOperationsBeforeTaxesAttributableToNoncontrollingInterests	1497000000	USD
CY2011	aes	Dispositions Acquisitions Gains DispositionsAcquisitionsGains	0	USD
CY2010	aes	Impairment Losses ImpairmentLosses	-322000000	USD
CY2010	aes	Dispositions Acquisitions Gains DispositionsAcquisitionsGains	0	USD
CY2010	aes	Pre Tax Contribution PreTaxContribution	644000000	USD
CY2010	aes	Unrealized Foreign Currency Gains Losses UnrealizedForeignCurrencyGainsLosses	38000000	USD
CY2010	aes	Unrealized Derivatives Gains Losses UnrealizedDerivativesGainsLosses	2000000	USD
CY2010	aes	Debt Retirement Losses DebtRetirementLosses	-29000000	USD
CY2010	aes	Income From Continuing Operations Before Taxes Attributable To Noncontrolling Interests IncomeFromContinuingOperationsBeforeTaxesAttributableToNoncontrollingInterests	1430000000	USD
CY2010Q4	us-gaap	Assets Assets	40511000000	USD
CY2012	aes	Capital Expenditures Total CapitalExpendituresTotal	2270000000	USD
CY2011	aes	Capital Expenditures Total CapitalExpendituresTotal	2461000000	USD
CY2010	aes	Capital Expenditures Total CapitalExpendituresTotal	2333000000	USD
CY2010Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1320000000	USD
CY2012Q4	aes	Stock Option Grant Price As Percent Of Market Price StockOptionGrantPriceAsPercentOfMarketPrice	1.00	pure
CY2010	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2011	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	16000000	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.26	pure
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.01	pure
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0108	pure
CY2012	aes	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Fair Value At Grant Date ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageFairValueAtGrantDate	3.04
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0265	pure
CY2011	aes	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Fair Value At Grant Date ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageFairValueAtGrantDate	4.54
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.31	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0286	pure
CY2010	aes	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Fair Value At Grant Date ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageFairValueAtGrantDate	5.08
CY2010	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	678000000	USD
CY2010	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	66000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y10M24D
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	24000000	USD
CY2012Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	6000000	USD
CY2010	aes	Other Income Gain On Extinguishment Of Brazil Swap Liability After Tax And Noncontrolling Interests OtherIncomeGainOnExtinguishmentOfBrazilSwapLiabilityAfterTaxAndNoncontrollingInterests	9000000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-2000000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-11000000	USD
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	562000000	USD
CY2012	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	135000000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-150000000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1000000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1000000	USD
CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	852000000	USD
CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-70000000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-8000000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-125000000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1000000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-19000000	USD
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.15	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2012	aes	Effective Income Tax Rate Reconciliation Withholding Tax Reversals EffectiveIncomeTaxRateReconciliationWithholdingTaxReversals	0	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.13	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.13	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.21	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.03	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.02	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Disposition Of Business EffectiveIncomeTaxRateReconciliationDispositionOfBusiness	0.04	pure
CY2010	aes	Effective Income Tax Rate Reconciliation Withholding Tax Reversals EffectiveIncomeTaxRateReconciliationWithholdingTaxReversals	-0.03	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0	pure
CY2010	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.31	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Disposition Of Business EffectiveIncomeTaxRateReconciliationDispositionOfBusiness	0	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.03	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0	pure
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.29	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.03	pure
CY2011	aes	Effective Income Tax Rate Reconciliation Withholding Tax Reversals EffectiveIncomeTaxRateReconciliationWithholdingTaxReversals	0	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0	pure
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	2.25	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.03	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Disposition Of Business EffectiveIncomeTaxRateReconciliationDispositionOfBusiness	0	pure
CY2010	aes	Effective Income Tax Rate Reconciliation Dpl Goodwill Impairment EffectiveIncomeTaxRateReconciliationDplGoodwillImpairment	0	pure
CY2012	aes	Effective Income Tax Rate Reconciliation Dpl Goodwill Impairment EffectiveIncomeTaxRateReconciliationDplGoodwillImpairment	2.03	pure
CY2011	aes	Effective Income Tax Rate Reconciliation Dpl Goodwill Impairment EffectiveIncomeTaxRateReconciliationDplGoodwillImpairment	0	pure
CY2012Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	296000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	-2978000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	-901000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	-2077000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	192000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	-2067000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	-419000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	-2529000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	-1604000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	-108000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	-358000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	-619000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	-555000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	-3290000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	-906000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	-2384000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	145000000	USD
CY2012	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	5000000	USD
CY2011	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-376000000	USD
CY2012Q4	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	15000000	USD
CY2012Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	311000000	USD
CY2012Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	405000000	USD
CY2012Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	2000000	USD
CY2012Q4	us-gaap	Accrued Income Taxes AccruedIncomeTaxes	407000000	USD
CY2011Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	563000000	USD
CY2011Q4	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	21000000	USD
CY2011Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	584000000	USD
CY2011Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	759000000	USD
CY2011Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	3000000	USD
CY2011Q4	us-gaap	Accrued Income Taxes AccruedIncomeTaxes	762000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	-1909000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	-321000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	-2269000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	-1481000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	-112000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	-463000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	-360000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	-516000000	USD
CY2012Q4	aes	Deferred Tax Assets Tax Credit Carryforwards Gross DeferredTaxAssetsTaxCreditCarryforwardsGross	-46000000	USD
CY2011Q4	aes	Deferred Tax Assets Tax Credit Carryforwards Gross DeferredTaxAssetsTaxCreditCarryforwardsGross	-46000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	-43000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	-39000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-10000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	18000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	15000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	4000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	4000000	USD
CY2012	aes	Tax Benefits Related To Tax Status Of Operations In Countries Subject To Reduced Tax Rates TaxBenefitsRelatedToTaxStatusOfOperationsInCountriesSubjectToReducedTaxRates	81000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-1915000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	2229000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-526000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	2737000000	USD
CY2011	aes	Tax Benefits Related To Tax Status Of Operations In Countries Subject To Reduced Tax Rates TaxBenefitsRelatedToTaxStatusOfOperationsInCountriesSubjectToReducedTaxRates	60000000	USD
CY2010	aes	Tax Benefits Related To Tax Status Of Operations In Countries Subject To Reduced Tax Rates TaxBenefitsRelatedToTaxStatusOfOperationsInCountriesSubjectToReducedTaxRates	60000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-539000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	2429000000	USD
CY2011	aes	Tax Benefits Related To Tax Status Of Operations In Countries Subject To Reduced Tax Rates Per Share TaxBenefitsRelatedToTaxStatusOfOperationsInCountriesSubjectToReducedTaxRatesPerShare	0.07
CY2012	aes	Tax Benefits Related To Tax Status Of Operations In Countries Subject To Reduced Tax Rates Per Share TaxBenefitsRelatedToTaxStatusOfOperationsInCountriesSubjectToReducedTaxRatesPerShare	0.10
CY2010	aes	Tax Benefits Related To Tax Status Of Operations In Countries Subject To Reduced Tax Rates Per Share TaxBenefitsRelatedToTaxStatusOfOperationsInCountriesSubjectToReducedTaxRatesPerShare	0.07
CY2012	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	1000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	0	USD
CY2010	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	-1000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	3000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	3000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	450000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	424000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	412000000	USD
CY2012Q4	aes	Unrecognized Tax Benefits That Would Impact Effective Tax Rate Portion With Attributes Warranting Full Valuation Allowance UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRatePortionWithAttributesWarrantingFullValuationAllowance	45000000	USD
CY2011Q4	aes	Unrecognized Tax Benefits That Would Impact Effective Tax Rate Portion With Attributes Warranting Full Valuation Allowance UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRatePortionWithAttributesWarrantingFullValuationAllowance	47000000	USD
CY2010Q4	aes	Unrecognized Tax Benefits That Would Impact Effective Tax Rate Portion With Attributes Warranting Full Valuation Allowance UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRatePortionWithAttributesWarrantingFullValuationAllowance	51000000	USD
CY2010	aes	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities Portion Resulting From Noncash Audit Settlement UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthoritiesPortionResultingFromNoncashAuditSettlement	105000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	12000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	34000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	-29000000	USD
CY2012	aes	Unrecognized Tax Benefits Increases Decreases Net Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesNetResultingFromForeignCurrencyTranslation	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-6000000	USD
CY2012Q1	aes	Disposal Group Not Discontinued Operation Additional Purchase Option Cost DisposalGroupNotDiscontinuedOperationAdditionalPurchaseOptionCost	28000000	EUR
CY2012Q1	aes	Disposal Group Not Discontinued Operation Additional Purchase Option Cost DisposalGroupNotDiscontinuedOperationAdditionalPurchaseOptionCost	37000000	USD
CY2012Q1	aes	Disposal Group Not Discontinued Operation Deferred Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationDeferredGainLossOnDisposal	9000000	USD
CY2012Q1	aes	Disposal Group Not Discontinued Operation Cost Recovery DisposalGroupNotDiscontinuedOperationCostRecovery	71000000	EUR
CY2012Q1	aes	Disposal Group Not Discontinued Operation Cost Recovery DisposalGroupNotDiscontinuedOperationCostRecovery	95000000	USD
CY2012Q1	aes	Disposal Group Not Discontinued Operation Proceeds Received At Closing DisposalGroupNotDiscontinuedOperationProceedsReceivedAtClosing	28000000	EUR
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-1000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	481000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	7000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	49000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	-18000000	USD
CY2011	aes	Unrecognized Tax Benefits Increases Decreases Net Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesNetResultingFromForeignCurrencyTranslation	-1000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-3000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	471000000	USD
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	510000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	14000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	51000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	-46000000	USD
CY2010	aes	Unrecognized Tax Benefits Increases Decreases Net Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesNetResultingFromForeignCurrencyTranslation	-2000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-67000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-23000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	437000000	USD
CY2012Q4	aes	Unrecognized Tax Benefits Anticipated To Result In Net Decrease Of Unrecognized Tax Benefits Within12 Months Of Balance Sheet Date Minimum UnrecognizedTaxBenefitsAnticipatedToResultInNetDecreaseOfUnrecognizedTaxBenefitsWithin12MonthsOfBalanceSheetDateMinimum	90000000	USD
CY2012Q4	aes	Unrecognized Tax Benefits Anticipated To Result In Net Decrease Of Unrecognized Tax Benefits Within12 Months Of Balance Sheet Date Maximum UnrecognizedTaxBenefitsAnticipatedToResultInNetDecreaseOfUnrecognizedTaxBenefitsWithin12MonthsOfBalanceSheetDateMaximum	110000000	USD
CY2012	aes	Revenue From Discontinued Operation During Phase Out Period Before Income Tax RevenueFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax	66000000	USD
CY2011	aes	Revenue From Discontinued Operation During Phase Out Period Before Income Tax RevenueFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax	836000000	USD
CY2010	aes	Revenue From Discontinued Operation During Phase Out Period Before Income Tax RevenueFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax	1695000000	USD
CY2012	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax	-10000000	USD
CY2011	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax	-157000000	USD
CY2010	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax	-770000000	USD
CY2012Q1	aes	Disposal Group Not Discontinued Operation Ownership Interest Sold DisposalGroupNotDiscontinuedOperationOwnershipInterestSold	0.80	pure
CY2012Q1	aes	Disposal Group Not Discontinued Operation Generation Capacity DisposalGroupNotDiscontinuedOperationGenerationCapacity	1199	MW
CY2012Q1	aes	Disposal Group Not Discontinued Operation Ownership Interest Prior To Sale DisposalGroupNotDiscontinuedOperationOwnershipInterestPriorToSale	0.7081	pure
CY2012Q1	aes	Disposal Group Not Discontinued Operation Net Proceeds From Sale DisposalGroupNotDiscontinuedOperationNetProceedsFromSale	172000000	EUR
CY2012Q1	aes	Disposal Group Not Discontinued Operation Net Proceeds From Sale DisposalGroupNotDiscontinuedOperationNetProceedsFromSale	229000000	USD
CY2012Q1	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	178000000	USD
CY2012Q1	aes	Disposal Group Not Discontinued Operation Proceeds Received At Closing DisposalGroupNotDiscontinuedOperationProceedsReceivedAtClosing	38000000	USD
CY2012Q2	aes	Disposal Not Discontinued Operation Net Proceeds From Sale DisposalNotDiscontinuedOperationNetProceedsFromSale	42000000	USD
CY2012Q3	aes	Proceeds From Sale Of China Equity Method Investments ProceedsFromSaleOfChinaEquityMethodInvestments	133000000	USD
CY2012Q3	aes	Gain On Sale Of China Equity Method Investments GainOnSaleOfChinaEquityMethodInvestments	27000000	USD
CY2012	aes	Income Loss From Continuing Operations Diluted IncomeLossFromContinuingOperationsDiluted	-915000000	USD
CY2011	aes	Income Loss From Continuing Operations Diluted IncomeLossFromContinuingOperationsDiluted	492000000	USD
CY2010	aes	Income Loss From Continuing Operations Diluted IncomeLossFromContinuingOperationsDiluted	496000000	USD
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	755000000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	778000000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	769000000	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	2000000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	2000000	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3000000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3000000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	755000000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	783000000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	774000000	shares
CY2012	aes	Dilutive Securities Restrictive Stock Units Per Share DilutiveSecuritiesRestrictiveStockUnitsPerShare	0
CY2011	aes	Dilutive Securities Restrictive Stock Units Per Share DilutiveSecuritiesRestrictiveStockUnitsPerShare	0
CY2010	aes	Dilutive Securities Restrictive Stock Units Per Share DilutiveSecuritiesRestrictiveStockUnitsPerShare	0
CY2012	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	1000000	shares
CY2012	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2000000	shares
CY2012Q4	us-gaap	Number Of Countries In Which Entity Operates NumberOfCountriesInWhichEntityOperates	28	integer
CY2012	aes	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Foreign Countries Percent EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToForeignCountriesPercent	0.79	pure
CY2012	aes	Entity Wide Disclosure On Geographic Areas Revenue From Discontinued Operations Attributed To Foreign Countries Percent EntityWideDisclosureOnGeographicAreasRevenueFromDiscontinuedOperationsAttributedToForeignCountriesPercent	0.38	pure
CY2011Q4	aes	Number Of Single Customers That Accounted For Ten Percent Or More Of Total Revenue NumberOfSingleCustomersThatAccountedForTenPercentOrMoreOfTotalRevenue	0	USD
CY2012Q4	aes	Number Of Single Customers That Accounted For Ten Percent Or More Of Total Revenue NumberOfSingleCustomersThatAccountedForTenPercentOrMoreOfTotalRevenue	0	USD
CY2010Q4	aes	Number Of Single Customers That Accounted For Ten Percent Or More Of Total Revenue NumberOfSingleCustomersThatAccountedForTenPercentOrMoreOfTotalRevenue	0	USD
CY2011	us-gaap	Nature Of Common Ownership Or Management Control Relationships NatureOfCommonOwnershipOrManagementControlRelationships	Terrific Investment Corporation, also a subsidiary of China Investment Corporation, owns approximately 15% of the Company’s outstanding shares of common stock and has representation on the Company’s Board of Directors.
CY2012Q1	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	4722000000	USD
CY2012Q2	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	4192000000	USD
CY2012Q3	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	4587000000	USD
CY2012Q1	us-gaap	Gross Profit GrossProfit	1082000000	USD
CY2012Q2	us-gaap	Gross Profit GrossProfit	695000000	USD
CY2012Q3	us-gaap	Gross Profit GrossProfit	1006000000	USD
CY2012Q4	us-gaap	Gross Profit GrossProfit	931000000	USD
CY2012Q4	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	4640000000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	524000000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	139000000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-1400000000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	377000000	USD
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-9000000	USD
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	68000000	USD
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-2000000	USD
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-54000000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	341000000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	140000000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	-1568000000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	175000000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.46
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.09
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-2.10
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.31
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.01
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.09
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.08
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.45
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.18
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.10
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.23
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.45
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.09
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-2.10
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.31
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.09
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.08
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.44
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.18
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.10
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.23
CY2011Q4	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	4183000000	USD
CY2011Q3	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	4252000000	USD
CY2011Q2	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	4386000000	USD
CY2011Q1	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	4102000000	USD
CY2011Q1	us-gaap	Gross Profit GrossProfit	985000000	USD
CY2011Q2	us-gaap	Gross Profit GrossProfit	989000000	USD
CY2011Q3	us-gaap	Gross Profit GrossProfit	1010000000	USD
CY2011Q4	us-gaap	Gross Profit GrossProfit	1079000000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	482000000	USD
CY2011Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	430000000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	210000000	USD
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.09
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.45
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.17
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.27
CY2011Q3	aes	Impairment Expense Pre Tax Total ImpairmentExpensePreTaxTotal	147000000	USD
CY2011Q4	aes	Impairment Expense Pre Tax Total ImpairmentExpensePreTaxTotal	10000000	USD
CY2012Q2	aes	Impairment Expense Pre Tax Total ImpairmentExpensePreTaxTotal	18000000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	453000000	USD
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	1000000	USD
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-3000000	USD
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-35000000	USD
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-8000000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.29
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.24
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.08
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.18
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.01
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.02
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.09
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.45
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.17
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.27
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.29
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.24
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.08
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.18
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.02
CY2012Q3	aes	Impairment Expense Pre Tax Total ImpairmentExpensePreTaxTotal	1890000	USD
CY2012Q4	aes	Impairment Expense Pre Tax Total ImpairmentExpensePreTaxTotal	-31000000	USD
CY2012Q1	us-gaap	Profit Loss ProfitLoss	515000000	USD
CY2012Q2	us-gaap	Profit Loss ProfitLoss	207000000	USD
CY2012Q3	us-gaap	Profit Loss ProfitLoss	-1402000000	USD
CY2012Q4	us-gaap	Profit Loss ProfitLoss	323000000	USD
CY2011Q1	us-gaap	Profit Loss ProfitLoss	483000000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	224000000	USD
CY2011Q2	us-gaap	Profit Loss ProfitLoss	427000000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	174000000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	175000000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	-131000000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	-209000000	USD
CY2011Q4	us-gaap	Profit Loss ProfitLoss	445000000	USD
CY2012Q1	aes	Impairment Expense Pre Tax Total ImpairmentExpensePreTaxTotal	10000000	USD
CY2011Q2	aes	Impairment Expense Pre Tax Total ImpairmentExpensePreTaxTotal	33000000	USD
CY2012Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.04
CY2012Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.04
CY2012Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2012Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2011Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2011Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2011Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2011Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2010	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	53000000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	129000000	USD
CY2012	us-gaap	Error Corrections And Prior Period Adjustments Description ErrorCorrectionsAndPriorPeriodAdjustmentsDescription	Correction of an Error – Certain amounts due to or from subsidiaries were not properly eliminated in the preparation of the Schedule I Condensed Financial Information of Parent for the year ended December 31, 2011 included in the Company’s 2011 Form 10-K.  As a result, the December 31, 2011 balance sheet information of accounts and notes receivable from subsidiaries, investments in and advances to subsidiaries and affiliates, and current and long-term accounts and notes payable to subsidiaries were overstated.    Accounts and notes receivable from subsidiaries was previously reported as $871 million and has been restated to $602 million.  Investment in and advances to subsidiaries and affiliates was previously reported as $12,088 million and has been restated to $11,352 million.  Accrued and notes payable to subsidiaries was previously reported as $317 million and has been restated to $48 million.  Accounts and notes payable to subsidiaries was previously reported as $1,007 million and has been restated to $254 million. Net cash provided by operating activities previously reported on the statement of cash flows for the year ended December 31, 2011 was previously reported as $1,569 million and has now been restated to $719 million.  Net cash used in investing activities was previously reported as $2,747 million and has now been restated to $2,638 million.  Net cash provided by financing activities previously reported as $773 million was restated to $1,512 million. Interest income and interest expense previously reported on the statement of operations for the year ended December 31, 2011 were each reduced by approximately $50 million as a result of these adjustments. There was no impact to Parent Company net income. There was no impact to the Schedule 1 Condensed Financial Information of Parent for the twelve months ended December 31, 2010 or the statement of comprehensive income for the year ended December 31, 2011 as a result of these adjustments. Further, there was no impact to the Company’s consolidated financial statements for 2012, 2011 or 2010 as a result of these adjustments.
CY2009Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	276000000	USD
CY2011	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	43000000	USD
CY2010	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	-37000000	USD
CY2010	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	3000000	USD
CY2011	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-24000000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	-80000000	USD
CY2011	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	-41000000	USD
CY2011Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	273000000	USD
CY2012Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	309000000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-13000000	USD
CY2010Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	295000000	USD

Files In Submission

Name	View Source	Status
0001193125-13-077580-index-headers.html	Edgar Link	pending
0001193125-13-077580-index.html	Edgar Link	pending
0001193125-13-077580.txt	Edgar Link	pending
0001193125-13-077580-xbrl.zip	Edgar Link	pending
aes-20121231.xml	Edgar Link	completed
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aes-20121231_def.xml	Edgar Link	unprocessable
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
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$AES
AES CORP Stock $aes

2012 Q4 Form 10-K Financial Statement

#000119312513077580 Filed on February 27, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AES AES CORP Stock $aes

2012 Q4 Form 10-K Financial Statement

#000119312513077580 Filed on February 27, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AES
AES CORP Stock $aes