$PPL
PPL Corp Stock $ppl

$ppl Overview Financials Valuation SEC Filings Company Website

2010 Q4 Form 10-K Financial Statement

#000092222412000023 Filed on February 28, 2012

Income Statement

Concept	2010 Q4	2010 Q3	2010 Q2
Revenue	$1.863B	$2.179B	$1.473B
YoY Change	8.95%	22.28%	-10.35%
Cost Of Revenue	$32.00M	$786.0M	$392.0M
YoY Change	-94.59%	1.03%	-49.09%
Gross Profit	$1.831B	$1.393B	$1.081B
YoY Change	63.63%	38.75%	28.23%
Gross Profit Margin	98.28%	63.93%	73.39%
Selling, General & Admin	$0.00
YoY Change	-100.0%
% of Gross Profit	0.0%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$182.0M	$216.0M	$203.0M
YoY Change	-64.66%	80.0%	76.52%
% of Gross Profit	9.94%	15.51%	18.78%
Operating Expenses	$1.189B	$871.0M	$855.0M
YoY Change	36.51%	4.56%	9.9%
Operating Profit	$642.0M	$522.0M	$226.0M
YoY Change	158.87%	205.26%	162.79%
Interest Expense	-$140.0M	$171.0M	$131.0M
YoY Change	33.33%	-281.91%	-259.76%
% of Operating Profit	-21.81%	32.76%	57.96%
Other Income/Expense, Net	-$64.00M	-$26.00M	$0.00
YoY Change	-242.22%	2500.0%	-100.0%
Pretax Income	$449.0M	$325.0M	$92.00M
YoY Change	182.39%	327.63%	-342.11%
Income Tax	$111.0M	$19.00M	$7.000M
% Of Pretax Income	24.72%	5.85%	7.61%
Net Earnings	$355.0M	$248.0M	$85.00M
YoY Change	132.03%	1140.0%	-1314.29%
Net Earnings / Revenue	19.06%	11.38%	5.77%
Basic Earnings Per Share	$0.73	$0.51	$0.22
Diluted Earnings Per Share	$0.73	$0.51	$0.22
COMMON SHARES
Basic Shares Outstanding		482.6M shares	381.9M shares
Diluted Shares Outstanding		482.8M shares	382.1M shares

Balance Sheet

Concept	2010 Q4	2010 Q3	2010 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.088B	$4.853B	$4.505B
YoY Change	35.83%	597.27%	363.0%
Cash & Equivalents	$925.0M	$4.853B	$4.505B
Short-Term Investments	$163.0M
Other Short-Term Assets	$86.00M	$3.450B	$3.216B
YoY Change	-97.25%	30.43%	7.56%
Inventory	$643.0M	$338.0M	$378.0M
Prepaid Expenses	$435.0M
Receivables	$652.0M	$494.0M	$446.0M
Other Receivables	$90.00M	$57.00M	$54.00M
Total Short-Term Assets	$6.188B	$9.192B	$8.599B
YoY Change	30.22%	113.82%	79.33%
LONG-TERM ASSETS
Property, Plant & Equipment	$20.82B	$12.91B	$13.05B
YoY Change	58.06%	0.26%	2.89%
Goodwill	$1.761B
YoY Change	118.49%
Intangibles	$966.0M	$601.0M
YoY Change	57.07%
Long-Term Investments	$75.00M	$45.00M	$62.00M
YoY Change	15.38%	-21.05%	14.81%
Other Assets	$571.0M	$3.223B	$2.881B
YoY Change	-79.26%	-1.86%	-16.88%
Total Long-Term Assets	$5.133B	$17.54B	$17.31B
YoY Change	-70.52%	-0.62%	-1.71%
TOTAL ASSETS
Total Short-Term Assets	$6.188B	$9.192B	$8.599B
Total Long-Term Assets	$5.133B	$17.54B	$17.31B
Total Assets	$32.84B	$26.73B	$25.91B
YoY Change	48.15%	21.8%	15.63%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.028B	$733.0M	$730.0M
YoY Change	66.07%	29.28%	24.79%
Accrued Expenses	$166.0M	$168.0M	$108.0M
YoY Change	48.21%	20.0%	-6.9%
Deferred Revenue
YoY Change
Short-Term Debt	$694.0M	$181.0M	$466.0M
YoY Change	8.61%	-70.81%	-23.73%
Long-Term Debt Due	$502.0M
YoY Change
Total Short-Term Liabilities	$5.214B	$4.345B	$4.195B
YoY Change	24.68%	14.55%	-7.11%
LONG-TERM LIABILITIES
Long-Term Debt	$12.16B	$8.839B	$8.711B
YoY Change	70.25%	21.92%	20.58%
Other Long-Term Liabilities	$752.0M	$2.484B	$2.482B
YoY Change	-74.16%	-10.03%	-14.18%
Total Long-Term Liabilities	$6.984B	$11.32B	$11.19B
YoY Change	-30.53%	13.11%	10.65%
TOTAL LIABILITIES
Total Short-Term Liabilities	$5.214B	$4.345B	$4.195B
Total Long-Term Liabilities	$6.984B	$11.32B	$11.19B
Total Liabilities	$12.20B	$18.40B	$17.98B
YoY Change	-26.82%	12.73%	6.42%
SHAREHOLDERS EQUITY
Retained Earnings	$4.082B
YoY Change
Common Stock	$4.607B	$5.000M
YoY Change	115075.0%	25.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$8.210B	$8.324B	$7.937B
YoY Change
Total Liabilities & Shareholders Equity	$32.84B	$26.73B	$25.91B
YoY Change	48.15%	21.8%	15.63%

Cashflow Statement

Concept	2010 Q4	2010 Q3	2010 Q2
OPERATING ACTIVITIES
Net Income	$355.0M	$248.0M	$85.00M
YoY Change	132.03%	1140.0%	-1314.29%
Depreciation, Depletion And Amortization	$182.0M	$216.0M	$203.0M
YoY Change	-64.66%	80.0%	76.52%
Cash From Operating Activities	$337.0M	$1.124B	-$226.0M
YoY Change	-44.3%	65.54%	-187.6%
INVESTING ACTIVITIES
Capital Expenditures	-$645.0M	-$378.0M	-$361.0M
YoY Change	51.76%	19.62%	32.72%
Acquisitions
YoY Change
Other Investing Activities	-$6.744B	-$4.000M	$213.0M
YoY Change	-5058.82%	-88.57%	17.03%
Cash From Investing Activities	-$7.389B	-$382.0M	-$148.0M
YoY Change	2456.75%	8.83%	64.44%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	3.121B	-409.0M	3.165B
YoY Change	-1579.15%	-32.4%	1718.97%
NET CHANGE
Cash From Operating Activities	337.0M	1.124B	-226.0M
Cash From Investing Activities	-7.389B	-382.0M	-148.0M
Cash From Financing Activities	3.121B	-409.0M	3.165B
Net Change In Cash	-3.931B	333.0M	2.791B
YoY Change	-3843.81%	-220.22%	716.08%
FREE CASH FLOW
Cash From Operating Activities	$337.0M	$1.124B	-$226.0M
Capital Expenditures	-$645.0M	-$378.0M	-$361.0M
Free Cash Flow	$982.0M	$1.502B	$135.0M
YoY Change	-4.66%	50.95%	-74.53%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2011	dei	Document Type DocumentType	10-K
CY2011	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2011	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2011	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2011	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2011
CY2011	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	579234837	shares
CY2011	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2011	dei	Amendment Flag AmendmentFlag	false
CY2011	dei	Entity Registrant Name EntityRegistrantName	PPL Corp
CY2011	dei	Entity Central Index Key EntityCentralIndexKey	0000922224
CY2011	dei	Document Period End Date DocumentPeriodEndDate	2011-12-31
CY2011	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2011Q2	dei	Entity Public Float EntityPublicFloat	16065288262	USD
CY2011	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	726000000	USD
CY2010	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	415000000	USD
CY2009	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	152000000	USD
CY2011	ppl	Wholesale Energy Marketing Realized WholesaleEnergyMarketingRealized	3807000000	USD
CY2010	ppl	Wholesale Energy Marketing Realized WholesaleEnergyMarketingRealized	4832000000	USD
CY2009	ppl	Wholesale Energy Marketing Realized WholesaleEnergyMarketingRealized	3184000000	USD
CY2011	ppl	Wholesale Energy Marketing Unrealized Economic Activity WholesaleEnergyMarketingUnrealizedEconomicActivity	1407000000	USD
CY2010	ppl	Wholesale Energy Marketing Unrealized Economic Activity WholesaleEnergyMarketingUnrealizedEconomicActivity	-805000000	USD
CY2009	ppl	Wholesale Energy Marketing Unrealized Economic Activity WholesaleEnergyMarketingUnrealizedEconomicActivity	-229000000	USD
CY2011	us-gaap	Gain Loss On Derivative Instruments Held For Trading Purposes Net GainLossOnDerivativeInstrumentsHeldForTradingPurposesNet	-2000000	USD
CY2010	us-gaap	Gain Loss On Derivative Instruments Held For Trading Purposes Net GainLossOnDerivativeInstrumentsHeldForTradingPurposesNet	2000000	USD
CY2009	us-gaap	Gain Loss On Derivative Instruments Held For Trading Purposes Net GainLossOnDerivativeInstrumentsHeldForTradingPurposesNet	17000000	USD
CY2011	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	507000000	USD
CY2010	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	409000000	USD
CY2009	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	423000000	USD
CY2011	us-gaap	Fuel Costs FuelCosts	1946000000	USD
CY2010	us-gaap	Fuel Costs FuelCosts	1235000000	USD
CY2009	us-gaap	Fuel Costs FuelCosts	920000000	USD
CY2011	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	12737000000	USD
CY2010	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	8521000000	USD
CY2009	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	7449000000	USD
CY2011	ppl	Purchased Power And Gas PurchasedPowerAndGas	2130000000	USD
CY2010	ppl	Purchased Power And Gas PurchasedPowerAndGas	2773000000	USD
CY2009	ppl	Purchased Power And Gas PurchasedPowerAndGas	2625000000	USD
CY2011	ppl	Energy Purchases Unrealized Economic Activity EnergyPurchasesUnrealizedEconomicActivity	1123000000	USD
CY2010	ppl	Energy Purchases Unrealized Economic Activity EnergyPurchasesUnrealizedEconomicActivity	-286000000	USD
CY2009	ppl	Energy Purchases Unrealized Economic Activity EnergyPurchasesUnrealizedEconomicActivity	155000000	USD
CY2011	us-gaap	Other Cost Of Services OtherCostOfServices	2667000000	USD
CY2010	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	238000000	USD
CY2010	us-gaap	Other Cost Of Services OtherCostOfServices	1756000000	USD
CY2009	us-gaap	Other Cost Of Services OtherCostOfServices	1418000000	USD
CY2011	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	960000000	USD
CY2010	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	556000000	USD
CY2009	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	455000000	USD
CY2011	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	326000000	USD
CY2009	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	280000000	USD
CY2011	ppl	Energy Related Businesses EnergyRelatedBusinesses	484000000	USD
CY2010	ppl	Energy Related Businesses EnergyRelatedBusinesses	383000000	USD
CY2009	ppl	Energy Related Businesses EnergyRelatedBusinesses	396000000	USD
CY2011	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	9636000000	USD
CY2010	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	6655000000	USD
CY2009	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	6553000000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	3101000000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	1866000000	USD
CY2009	us-gaap	Operating Income Loss OperatingIncomeLoss	896000000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4000000	USD
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-31000000	USD
CY2009	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	47000000	USD
CY2011	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	6000000	USD
CY2010	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	3000000	USD
CY2009	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	18000000	USD
CY2011	us-gaap	Interest Expense InterestExpense	898000000	USD
CY2010	us-gaap	Interest Expense InterestExpense	593000000	USD
CY2009	us-gaap	Interest Expense InterestExpense	387000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2201000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1239000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	538000000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	691000000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	263000000	USD
CY2009	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	105000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1510000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	976000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	433000000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	2000000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-17000000	USD
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-7000000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	1512000000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	959000000	USD
CY2009	us-gaap	Profit Loss ProfitLoss	426000000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17000000	USD
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	21000000	USD
CY2009	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	19000000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	1495000000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	938000000	USD
CY2009	us-gaap	Net Income Loss NetIncomeLoss	407000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1493000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	955000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	414000000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	2000000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-17000000	USD
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-7000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.70
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.21
CY2009	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.10
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.70
CY2010	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.20
CY2009	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.10
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.71
CY2011	ppl	Equity Investees Other Comprehensive Income Loss Reclassified To Net Income EquityInvesteesOtherComprehensiveIncomeLossReclassifiedToNetIncome	3000000	USD
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.17
CY2009	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.08
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.70
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.17
CY2009	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.40
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.40
CY2009	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.38
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	550395000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	431345000	shares
CY2009	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	376082000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	550952000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	431569000	shares
CY2009	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	376406000	shares
CY2011	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	0	USD
CY2010	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	0	USD
CY2009	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	304000000	USD
CY2011	us-gaap	Utility Revenue UtilityRevenue	6292000000	USD
CY2010	us-gaap	Utility Revenue UtilityRevenue	3668000000	USD
CY2009	us-gaap	Utility Revenue UtilityRevenue	3902000000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-48000000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-59000000	USD
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	101000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	9000000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	29000000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	49000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	202000000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	219000000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	492000000	USD
CY2011	ppl	Equity Investees Other Comprehensive Income Loss EquityInvesteesOtherComprehensiveIncomeLoss	0	USD
CY2010	ppl	Equity Investees Other Comprehensive Income Loss EquityInvesteesOtherComprehensiveIncomeLoss	0	USD
CY2009	ppl	Equity Investees Other Comprehensive Income Loss EquityInvesteesOtherComprehensiveIncomeLoss	1000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	3000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	-17000000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	-1000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-80000000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-340000000	USD
CY2011	ppl	Other Comprehensive Income Defined Benefit Plans Net Transition Obligation Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetTransitionObligationArisingDuringPeriodNetOfTax	0	USD
CY2010	ppl	Other Comprehensive Income Defined Benefit Plans Net Transition Obligation Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetTransitionObligationArisingDuringPeriodNetOfTax	8000000	USD
CY2009	ppl	Other Comprehensive Income Defined Benefit Plans Net Transition Obligation Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetTransitionObligationArisingDuringPeriodNetOfTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-7000000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-5000000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-4000000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	370000000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	126000000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-131000000	USD
CY2010	ppl	Equity Investees Other Comprehensive Income Loss Reclassified To Net Income EquityInvesteesOtherComprehensiveIncomeLossReclassifiedToNetIncome	0	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	47000000	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	41000000	USD
CY2011	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	10000000	USD
CY2010	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	12000000	USD
CY2009	ppl	Equity Investees Other Comprehensive Income Loss Reclassified To Net Income EquityInvesteesOtherComprehensiveIncomeLossReclassifiedToNetIncome	0	USD
CY2009	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	13000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-309000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	58000000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	449000000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plan Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plan Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTax	2000000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plan Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTax	1000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	17000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	21000000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	19000000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	4000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1186000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	996000000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	856000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1203000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1017000000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	875000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-152000000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	-2000000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	-1000000	USD
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	4000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-6000000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-31000000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-50000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-139000000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-148000000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-356000000	USD
CY2011	ppl	Other Comprehensive Income Equity Investees Other Comprehensive Income Loss Arising During Period Tax OtherComprehensiveIncomeEquityInvesteesOtherComprehensiveIncomeLossArisingDuringPeriodTax	0	USD
CY2010	ppl	Other Comprehensive Income Equity Investees Other Comprehensive Income Loss Arising During Period Tax OtherComprehensiveIncomeEquityInvesteesOtherComprehensiveIncomeLossArisingDuringPeriodTax	0	USD
CY2009	ppl	Other Comprehensive Income Equity Investees Other Comprehensive Income Loss Arising During Period Tax OtherComprehensiveIncomeEquityInvesteesOtherComprehensiveIncomeLossArisingDuringPeriodTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-1000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-14000000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-1000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	58000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	50000000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	147000000	USD
CY2011	ppl	Other Comprehensive Income Defined Benefit Plans Net Transition Obligation Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetTransitionObligationArisingDuringPeriodTax	0	USD
CY2010	ppl	Other Comprehensive Income Defined Benefit Plans Net Transition Obligation Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetTransitionObligationArisingDuringPeriodTax	-4000000	USD
CY2009	ppl	Other Comprehensive Income Defined Benefit Plans Net Transition Obligation Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetTransitionObligationArisingDuringPeriodTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	5000000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	3000000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	3000000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax	246000000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax	84000000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax	-92000000	USD
CY2011	ppl	Other Comprehensive Income Reclassification Adjustment On Equity Investees Other Comprehensive Income Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnEquityInvesteesOtherComprehensiveIncomeIncludedInNetIncomeTax	0	USD
CY2010	ppl	Other Comprehensive Income Reclassification Adjustment On Equity Investees Other Comprehensive Income Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnEquityInvesteesOtherComprehensiveIncomeIncludedInNetIncomeTax	0	USD
CY2009	ppl	Other Comprehensive Income Reclassification Adjustment On Equity Investees Other Comprehensive Income Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnEquityInvesteesOtherComprehensiveIncomeIncludedInNetIncomeTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax Effect OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostTaxEffect	-5000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax Effect OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostTaxEffect	-7000000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax Effect OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostTaxEffect	-8000000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plant Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlantNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	-19000000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	-14000000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	-4000000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plant Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlantNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostTax	-1000000	USD
CY2009	ppl	Pre Tax Gain From Sale Of Maine Hydroelectric Generation Business PreTaxGainFromSaleOfMaineHydroelectricGenerationBusiness	38000000	USD
CY2009	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	127000000	USD
CY2011	ppl	Unrealized Gains Losses On Derivatives And Other Hedging Activities UnrealizedGainsLossesOnDerivativesAndOtherHedgingActivities	314000000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plant Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlantNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostTax	-1000000	USD
CY2011	ppl	Pre Tax Gain From Sale Of Maine Hydroelectric Generation Business PreTaxGainFromSaleOfMaineHydroelectricGenerationBusiness	0	USD
CY2010	ppl	Pre Tax Gain From Sale Of Maine Hydroelectric Generation Business PreTaxGainFromSaleOfMaineHydroelectricGenerationBusiness	25000000	USD
CY2011	ppl	Depreciation From Continuing And Discontinued Operations DepreciationFromContinuingAndDiscontinuedOperations	961000000	USD
CY2010	ppl	Depreciation From Continuing And Discontinued Operations DepreciationFromContinuingAndDiscontinuedOperations	567000000	USD
CY2009	ppl	Depreciation From Continuing And Discontinued Operations DepreciationFromContinuingAndDiscontinuedOperations	471000000	USD
CY2011	ppl	Amortization Of Recoverable Transition Costs AmortizationOfRecoverableTransitionCosts	254000000	USD
CY2010	ppl	Amortization Of Recoverable Transition Costs AmortizationOfRecoverableTransitionCosts	213000000	USD
CY2009	ppl	Amortization Of Recoverable Transition Costs AmortizationOfRecoverableTransitionCosts	389000000	USD
CY2011	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	205000000	USD
CY2010	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	102000000	USD
CY2009	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	70000000	USD
CY2011	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	582000000	USD
CY2010	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	241000000	USD
CY2009	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	104000000	USD
CY2011	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	13000000	USD
CY2010	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	120000000	USD
CY2010	ppl	Unrealized Gains Losses On Derivatives And Other Hedging Activities UnrealizedGainsLossesOnDerivativesAndOtherHedgingActivities	-542000000	USD
CY2009	ppl	Unrealized Gains Losses On Derivatives And Other Hedging Activities UnrealizedGainsLossesOnDerivativesAndOtherHedgingActivities	-329000000	USD
CY2011	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	-74000000	USD
CY2010	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	66000000	USD
CY2009	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	8000000	USD
CY2011	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-36000000	USD
CY2010	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-57000000	USD
CY2009	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-13000000	USD
CY2011	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	89000000	USD
CY2010	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	100000000	USD
CY2009	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-76000000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-36000000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	216000000	USD
CY2009	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-150000000	USD
CY2011	ppl	Net Change Unbilled Revenues NetChangeUnbilledRevenues	-64000000	USD
CY2010	ppl	Net Change Unbilled Revenues NetChangeUnbilledRevenues	100000000	USD
CY2009	ppl	Net Change Unbilled Revenues NetChangeUnbilledRevenues	-6000000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-294000000	USD
CY2010	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	318000000	USD
CY2009	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	17000000	USD
CY2011	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	-190000000	USD
CY2010	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	-18000000	USD
CY2009	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	334000000	USD
CY2011	ppl	Price Risk Management Assets And Liabilities PriceRiskManagementAssetsAndLiabilities	-2000000	USD
CY2010	ppl	Price Risk Management Assets And Liabilities PriceRiskManagementAssetsAndLiabilities	24000000	USD
CY2009	ppl	Price Risk Management Assets And Liabilities PriceRiskManagementAssetsAndLiabilities	231000000	USD
CY2011	ppl	Change In Taxes ChangeInTaxes	-104000000	USD
CY2010	ppl	Change In Taxes ChangeInTaxes	20000000	USD
CY2009	ppl	Change In Taxes ChangeInTaxes	-3000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-4000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-28000000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-80000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	62000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	45000000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-12000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-99000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-12000000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	20000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2507000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2033000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1852000000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2487000000	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1597000000	USD
CY2009	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1225000000	USD
CY2011	ppl	Proceeds From Sale Of Long Island Generation Business ProceedsFromSaleOfLongIslandGenerationBusiness	0	USD
CY2010	ppl	Proceeds From Sale Of Long Island Generation Business ProceedsFromSaleOfLongIslandGenerationBusiness	124000000	USD
CY2009	ppl	Proceeds From Sale Of Long Island Generation Business ProceedsFromSaleOfLongIslandGenerationBusiness	0	USD
CY2011	ppl	Proceeds From Sale Of Maine Hydroelectric Generation Business ProceedsFromSaleOfMaineHydroelectricGenerationBusiness	0	USD
CY2010	ppl	Proceeds From Sale Of Maine Hydroelectric Generation Business ProceedsFromSaleOfMaineHydroelectricGenerationBusiness	38000000	USD
CY2009	ppl	Proceeds From Sale Of Maine Hydroelectric Generation Business ProceedsFromSaleOfMaineHydroelectricGenerationBusiness	81000000	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	169000000	USD
CY2010	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	128000000	USD
CY2009	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	227000000	USD
CY2011	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	163000000	USD
CY2010	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	0	USD
CY2009	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	154000000	USD
CY2011	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	143000000	USD
CY2010	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-85000000	USD
CY2009	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-218000000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	90000000	USD
CY2010	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	53000000	USD
CY2009	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	82000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-7952000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-8229000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-880000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	5745000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	4642000000	USD
CY2009	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	298000000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1210000000	USD
CY2010	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	20000000	USD
CY2009	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1016000000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	746000000	USD
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	566000000	USD
CY2009	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	517000000	USD
CY2011	ppl	Payment Of Debt Issuance Costs Short And Long Term Facilities PaymentOfDebtIssuanceCostsShortAndLongTermFacilities	102000000	USD
CY2010	ppl	Payment Of Debt Issuance Costs Short And Long Term Facilities PaymentOfDebtIssuanceCostsShortAndLongTermFacilities	175000000	USD
CY2009	ppl	Payment Of Debt Issuance Costs Short And Long Term Facilities PaymentOfDebtIssuanceCostsShortAndLongTermFacilities	21000000	USD
CY2011	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-125000000	USD
CY2010	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	70000000	USD
CY2009	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-52000000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-92000000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-31000000	USD
CY2009	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-23000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	5767000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	6307000000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	124000000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	156000000	USD
CY2010	us-gaap	Pension Contributions PensionContributions	396000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1271000000	USD
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-45000000	USD
CY2010	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	13000000	USD
CY2009	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	0	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	277000000	USD
CY2009	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-299000000	USD
CY2008Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1100000000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	696000000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	458000000	USD
CY2009	us-gaap	Interest Paid Net InterestPaidNet	460000000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-76000000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	313000000	USD
CY2009	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	16000000	USD
CY2009	us-gaap	Pension Contributions PensionContributions	185000000	USD
CY2011	us-gaap	Pension Contributions PensionContributions	667000000	USD
CY2010	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	114000000	USD
CY2009	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	201000000	USD
CY2011	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-106000000	USD
CY2010	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	110000000	USD
CY2009	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-31000000	USD
CY2011	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	109000000	USD
CY2010	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	50000000	USD
CY2009	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-20000000	USD
CY2011	ppl	Proceeds From Sale Of Certain Noncore Generation Facilities ProceedsFromSaleOfCertainNoncoreGenerationFacilities	381000000	USD
CY2010	ppl	Proceeds From Sale Of Certain Noncore Generation Facilities ProceedsFromSaleOfCertainNoncoreGenerationFacilities	0	USD
CY2009	ppl	Proceeds From Sale Of Certain Noncore Generation Facilities ProceedsFromSaleOfCertainNoncoreGenerationFacilities	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2297000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2441000000	USD
CY2009	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	60000000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	801000000	USD
CY2011	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	5763000000	USD
CY2010	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	0	USD
CY2009	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	0	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	6812000000	USD
CY2009	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2011	ppl	Payments For Repurchase Of Redeemable Preferred Stock Of Subsidiary PaymentsForRepurchaseOfRedeemablePreferredStockOfSubsidiary	0	USD
CY2010	ppl	Payments For Repurchase Of Redeemable Preferred Stock Of Subsidiary PaymentsForRepurchaseOfRedeemablePreferredStockOfSubsidiary	54000000	USD
CY2009	ppl	Payments For Repurchase Of Redeemable Preferred Stock Of Subsidiary PaymentsForRepurchaseOfRedeemablePreferredStockOfSubsidiary	0	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1202000000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	925000000	USD
CY2011Q4	us-gaap	Short Term Investments ShortTermInvestments	16000000	USD
CY2010Q4	us-gaap	Short Term Investments ShortTermInvestments	163000000	USD
CY2011Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	152000000	USD
CY2010Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	28000000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	742000000	USD
CY2011Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	85000000	USD
CY2010Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	90000000	USD
CY2011Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	830000000	USD
CY2010Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	789000000	USD
CY2010Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	652000000	USD
CY2011Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	640000000	USD
CY2010Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	618000000	USD
CY2011Q4	us-gaap	Other Investments OtherInvestments	78000000	USD
CY2010Q4	us-gaap	Other Investments OtherInvestments	75000000	USD
CY2011Q4	us-gaap	Long Term Investments LongTermInvestments	718000000	USD
CY2011Q4	us-gaap	Inventory Net InventoryNet	654000000	USD
CY2010Q4	us-gaap	Inventory Net InventoryNet	643000000	USD
CY2011Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	160000000	USD
CY2010Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	435000000	USD
CY2011Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	2548000000	USD
CY2010Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	1918000000	USD
CY2011Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2010Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	374000000	USD
CY2011Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	9000000	USD
CY2010Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	85000000	USD
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	28000000	USD
CY2010Q4	us-gaap	Other Assets Current OtherAssetsCurrent	86000000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	6426000000	USD
CY2010Q4	us-gaap	Assets Current AssetsCurrent	6188000000	USD
CY2010Q4	us-gaap	Long Term Investments LongTermInvestments	693000000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	22994000000	USD
CY2010Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	15994000000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	3534000000	USD
CY2010Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	3037000000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	19460000000	USD
CY2010Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	12957000000	USD
CY2011Q4	ppl	Property Plant And Equipment Generation Or Processing PropertyPlantAndEquipmentGenerationOrProcessing	10514000000	USD
CY2010Q4	ppl	Property Plant And Equipment Generation Or Processing PropertyPlantAndEquipmentGenerationOrProcessing	10165000000	USD
CY2011Q4	ppl	Property Plant And Equipment Nuclear Fuel PropertyPlantAndEquipmentNuclearFuel	658000000	USD
CY2010Q4	ppl	Property Plant And Equipment Nuclear Fuel PropertyPlantAndEquipmentNuclearFuel	578000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	637000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	403000000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5676000000	USD
CY2010Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5440000000	USD
CY2011Q4	ppl	Property Plant And Equipment Net Nonregulated PropertyPlantAndEquipmentNetNonregulated	6133000000	USD
CY2010Q4	ppl	Property Plant And Equipment Net Nonregulated PropertyPlantAndEquipmentNetNonregulated	5706000000	USD
CY2011Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1673000000	USD
CY2010Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	2160000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	27266000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20823000000	USD
CY2011Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1349000000	USD
CY2010Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1180000000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	4114000000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	1761000000	USD
CY2011Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1065000000	USD
CY2010Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	966000000	USD
CY2011Q4	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	920000000	USD
CY2010Q4	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	655000000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	790000000	USD
CY2010Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	571000000	USD
CY2011Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	8238000000	USD
CY2010Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	5133000000	USD
CY2011Q4	us-gaap	Assets Assets	42648000000	USD
CY2010Q4	us-gaap	Assets Assets	32837000000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	54000000	USD
CY2010Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	55000000	USD
CY2011Q4	ppl	Ppe Net From Consolidation Of Vie PpeNetFromConsolidationOfVie	416000000	USD
CY2010Q4	ppl	Ppe Net From Consolidation Of Vie PpeNetFromConsolidationOfVie	424000000	USD
CY2011Q4	ppl	Variable Interest Carrying Amount Intangible Assets VariableInterestCarryingAmountIntangibleAssets	11000000	USD
CY2010Q4	ppl	Variable Interest Carrying Amount Intangible Assets VariableInterestCarryingAmountIntangibleAssets	11000000	USD
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2010Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	780000000	shares
CY2010Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	780000000	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	578405000	shares
CY2010Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	483391000	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	578405000	shares
CY2010Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	483391000	shares
CY2011Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	578000000	USD
CY2010Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	694000000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2010Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	502000000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1214000000	USD
CY2010Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1028000000	USD
CY2011Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	65000000	USD
CY2010Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	134000000	USD
CY2011Q4	us-gaap	Interest Payable Current InterestPayableCurrent	287000000	USD
CY2010Q4	us-gaap	Interest Payable Current InterestPayableCurrent	166000000	USD
CY2011Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	207000000	USD
CY2010Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	174000000	USD
CY2011Q4	ppl	Price Risk Management Liabilities Current PriceRiskManagementLiabilitiesCurrent	1570000000	USD
CY2010Q4	ppl	Price Risk Management Liabilities Current PriceRiskManagementLiabilitiesCurrent	1144000000	USD
CY2011Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	0	USD
CY2010Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	0	USD
CY2011Q4	ppl	Counterparty Collateral Current CounterpartyCollateralCurrent	148000000	USD
CY2010Q4	ppl	Counterparty Collateral Current CounterpartyCollateralCurrent	338000000	USD
CY2011Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	73000000	USD
CY2010Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	109000000	USD
CY2011Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	1113000000	USD
CY2010Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	925000000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	5255000000	USD
CY2010Q4	us-gaap	Liabilities Current LiabilitiesCurrent	5214000000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	17993000000	USD
CY2010Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	12161000000	USD
CY2009	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1000000	USD
CY2010Q4	ppl	Price Risk Management Liabilities PriceRiskManagementLiabilities	470000000	USD
CY2011Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	1299000000	USD
CY2010Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	1496000000	USD
CY2011Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	484000000	USD
CY2010Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	435000000	USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	3326000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	2563000000	USD
CY2011Q4	ppl	Deferred Investment Tax Credit DeferredInvestmentTaxCredit	285000000	USD
CY2010Q4	ppl	Deferred Investment Tax Credit DeferredInvestmentTaxCredit	237000000	USD
CY2011Q4	ppl	Price Risk Management Liabilities PriceRiskManagementLiabilities	840000000	USD
CY2011Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1010000000	USD
CY2010Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1031000000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1060000000	USD
CY2010Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	752000000	USD
CY2011Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	8304000000	USD
CY2010Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	6984000000	USD
CY2010Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	6000000	USD
CY2010Q4	us-gaap	Common Stock Value CommonStockValue	5000000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	6813000000	USD
CY2010Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	4602000000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4797000000	USD
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4082000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-788000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-479000000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	10828000000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	8210000000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	268000000	USD
CY2010Q4	us-gaap	Minority Interest MinorityInterest	268000000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	11096000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8478000000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	42648000000	USD
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	32837000000	USD
CY2008Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5396000000	USD
CY2009	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	83000000	USD
CY2010	ppl	Votes Per Share Of Common Stock VotesPerShareOfCommonStock	1	pure
CY2009	ppl	Dividends Dividend Equivalents Redemptions And Distributions DividendsDividendEquivalentsRedemptionsAndDistributions	540000000	USD
CY2010	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2491000000	USD
CY2010	ppl	Dividends Dividend Equivalents Redemptions And Distributions DividendsDividendEquivalentsRedemptionsAndDistributions	677000000	USD
CY2011	ppl	Issuance Of Equity Units Future Contract Adjustment Payments Present Value And Related Issuance Costs IssuanceOfEquityUnitsFutureContractAdjustmentPaymentsPresentValueAndRelatedIssuanceCosts	-143000000	USD
CY2011	ppl	Stock Based Compensation StockBasedCompensation	10000000	USD
CY2011	ppl	Dividends Dividend Equivalents Redemptions And Distributions DividendsDividendEquivalentsRedemptionsAndDistributions	797000000	USD
CY2009	ppl	Stock Based Compensation StockBasedCompensation	2000000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5815000000	USD
CY2010	ppl	Stock Based Compensation StockBasedCompensation	8000000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2345000000	USD
CY2011	ppl	Votes Per Share Of Common Stock VotesPerShareOfCommonStock	1	pure
CY2011	ppl	Shares Issued Under Specific Equity Offering SharesIssuedUnderSpecificEquityOffering	92000000	shares
CY2010	ppl	Shares Issued Under Specific Equity Offering SharesIssuedUnderSpecificEquityOffering	103500000	shares
CY2011	ppl	Issuance Of Equity Units Future Contract Adjustment Payments Present Value IssuanceOfEquityUnitsFutureContractAdjustmentPaymentsPresentValue	123000000	USD
CY2010	ppl	Issuance Of Equity Units Future Contract Adjustment Payments Present Value IssuanceOfEquityUnitsFutureContractAdjustmentPaymentsPresentValue	157000000	USD
CY2011	ppl	Issuance Of Equity Units Related Issuance Costs Net Of Tax IssuanceOfEquityUnitsRelatedIssuanceCostsNetOfTax	20000000	USD
CY2010	ppl	Issuance Of Equity Units Related Issuance Costs Net Of Tax IssuanceOfEquityUnitsRelatedIssuanceCostsNetOfTax	19000000	USD
CY2010	ppl	Issuance Of Equity Units Future Contract Adjustment Payments Present Value And Related Issuance Costs IssuanceOfEquityUnitsFutureContractAdjustmentPaymentsPresentValueAndRelatedIssuanceCosts	-176000000	USD
CY2009	ppl	Repayments Of Long Term Debt To Related Parties RepaymentsOfLongTermDebtToRelatedParties	0	USD
CY2011Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs CostsInExcessOfBillingsOnUncompletedContractsOrPrograms	15000000	USD
CY2011Q4	us-gaap	Billings In Excess Of Cost BillingsInExcessOfCost	67000000	USD
CY2010Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs CostsInExcessOfBillingsOnUncompletedContractsOrPrograms	9000000	USD
CY2010Q4	us-gaap	Billings In Excess Of Cost BillingsInExcessOfCost	70000000	USD
CY2011	ppl	Purchases Of Accounts Receivable PurchasesOfAccountsReceivable	872000000	USD
CY2010	ppl	Purchases Of Accounts Receivable PurchasesOfAccountsReceivable	617000000	USD
CY2011	ppl	Minimum Percentage Of Pension Gains Losses To Use Accelerated Amortization MinimumPercentageOfPensionGainsLossesToUseAcceleratedAmortization	0.10	pure
CY2011	ppl	Maximum Percentage Of Pension Gains Losses To Use Accelerated Amortization MaximumPercentageOfPensionGainsLossesToUseAcceleratedAmortization	0.30	pure
CY2011	ppl	Excess Percentage Of Pension Gains Losses To Use Accelerated Amortization ExcessPercentageOfPensionGainsLossesToUseAcceleratedAmortization	0.30	pure
CY2011	ppl	Foreign Currency Translation Impacting Other Comprehensive Income ForeignCurrencyTranslationImpactingOtherComprehensiveIncome	15000000	USD
CY2011	us-gaap	Use Of Estimates UseOfEstimates	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;text-decoration:underline;margin-left:0px;">Use of Estimates</font><font style="font-family:Arial;font-size:10pt;font-weight:bold;"> </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p>
CY2011	us-gaap	Comparability Of Prior Year Financial Data ComparabilityOfPriorYearFinancialData	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;text-decoration:underline;margin-left:0px;">Changes in Classification</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">The classification of certain amounts in the 2010 and 2009 financial statements have been changed to conform to the current presentation. The changes in classification did not affect</font><font style="font-family:Times New Roman;font-size:10pt;"> the Registrants' net income or equity.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p>
CY2008Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-237000000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-136000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-195000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-243000000	USD
CY2008Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	18000000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	62000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	86000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	88000000	USD
CY2008Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-21000000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	602000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	695000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	527000000	USD
CY2008Q4	ppl	Accumulated Other Comprehensive Income Loss Equity Investee Net Of Tax AccumulatedOtherComprehensiveIncomeLossEquityInvesteeNetOfTax	-3000000	USD
CY2009Q4	ppl	Accumulated Other Comprehensive Income Loss Equity Investee Net Of Tax AccumulatedOtherComprehensiveIncomeLossEquityInvesteeNetOfTax	-2000000	USD
CY2010Q4	ppl	Accumulated Other Comprehensive Income Loss Equity Investee Net Of Tax AccumulatedOtherComprehensiveIncomeLossEquityInvesteeNetOfTax	-2000000	USD
CY2011Q4	ppl	Accumulated Other Comprehensive Income Loss Equity Investee Net Of Tax AccumulatedOtherComprehensiveIncomeLossEquityInvesteeNetOfTax	1000000	USD
CY2008Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plan Net Of Tax Prior Service Cost AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanNetOfTaxPriorServiceCost	-75000000	USD
CY2009Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plan Net Of Tax Prior Service Cost AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanNetOfTaxPriorServiceCost	-61000000	USD
CY2010Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plan Net Of Tax Prior Service Cost AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanNetOfTaxPriorServiceCost	-32000000	USD
CY2011Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plan Net Of Tax Prior Service Cost AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanNetOfTaxPriorServiceCost	-25000000	USD
CY2008Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plans Net Of Tax Actuarial Gain Loss AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlansNetOfTaxActuarialGainLoss	-657000000	USD
CY2009Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plans Net Of Tax Actuarial Gain Loss AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlansNetOfTaxActuarialGainLoss	-993000000	USD
CY2010Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plans Net Of Tax Actuarial Gain Loss AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlansNetOfTaxActuarialGainLoss	-1032000000	USD
CY2011Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plans Net Of Tax Actuarial Gain Loss AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlansNetOfTaxActuarialGainLoss	-1137000000	USD
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CY2009Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plans Net Of Tax Transition Asset Obligation AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlansNetOfTaxTransitionAssetObligation	-9000000	USD
CY2010Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plans Net Of Tax Transition Asset Obligation AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlansNetOfTaxTransitionAssetObligation	1000000	USD
CY2011Q4	ppl	Accumulated Other Comprehensive Income Loss Defined Benefit Plans Net Of Tax Transition Asset Obligation AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlansNetOfTaxTransitionAssetObligation	1000000	USD
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CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-537000000	USD
CY2011	us-gaap	Electrical Distribution Revenue ElectricalDistributionRevenue	4674000000	USD
CY2011	us-gaap	Gas Domestic Regulated Revenue GasDomesticRegulatedRevenue	0	USD
CY2010	us-gaap	Electrical Distribution Revenue ElectricalDistributionRevenue	2941000000	USD
CY2010	us-gaap	Gas Domestic Regulated Revenue GasDomesticRegulatedRevenue	0	USD
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CY2009	us-gaap	Gas Domestic Regulated Revenue GasDomesticRegulatedRevenue	0	USD
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CY2009	ppl	Electric Foreign Regulated Revenue ElectricForeignRegulatedRevenue	684000000	USD
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CY2011Q4	us-gaap	Capitalized Computer Software Accumulated Amortization CapitalizedComputerSoftwareAccumulatedAmortization	98000000	USD
CY2010Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	213000000	USD
CY2010Q4	us-gaap	Capitalized Computer Software Accumulated Amortization CapitalizedComputerSoftwareAccumulatedAmortization	70000000	USD
CY2011	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	39000000	USD
CY2010	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	21000000	USD
CY2009	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	13000000	USD
CY2011Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	654000000	USD
CY2010Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	643000000	USD
CY2011	us-gaap	Guarantees Indemnifications And Warranties Policies GuaranteesIndemnificationsAndWarrantiesPolicies	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;text-decoration:underline;margin-left:0px;">Guarantees</font><font style="font-family:Arial;font-size:10pt;font-weight:bold;"> </font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">(PPL, PPL Energy Supply</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">,</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;"> PPL Electric</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">, LKE, LG&E and KU</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Generally, the initial measurement of a guarantee liability is the fair value of the guarantee at its inception. However, there are certain guarantees excluded from the scope of accounting guidance and other guarantees that are not subject to the initial recognition and measurement provisions of accounting guidance</font><font style="font-family:Times New Roman;font-size:10pt;"> that only require d</font><font style="font-family:Times New Roman;font-size:10pt;">i</font><font style="font-family:Times New Roman;font-size:10pt;">sclosure</font><font style="font-family:Times New Roman;font-size:10pt;">. See Note </font><font style="font-family:Times New Roman;font-size:10pt;">15</font><font style="font-family:Times New Roman;font-size:10pt;"> for further discussion of recorded and unrecorded guarantees.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p>
CY2009	us-gaap	Discontinued Operation Tax Effect Of Adjustment To Prior Period Gain Loss On Disposal DiscontinuedOperationTaxEffectOfAdjustmentToPriorPeriodGainLossOnDisposal	24000000	USD
CY2011	us-gaap	Revenues Revenues	12737000000	USD
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CY2009	us-gaap	Revenues Revenues	7449000000	USD
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CY2010	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	1639000000	USD
CY2009	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	1261000000	USD
CY2011Q4	us-gaap	Noncurrent Assets NoncurrentAssets	28125000000	USD
CY2010Q4	us-gaap	Noncurrent Assets NoncurrentAssets	21733000000	USD
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CY2011	us-gaap	Employee Stock Ownership Plan Esop Shares Contributed To Esop EmployeeStockOwnershipPlanESOPSharesContributedToESOP	301319	shares
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CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
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CY2010	ppl	Net Income Amounts Allocated To Participating Securities NetIncomeAmountsAllocatedToParticipatingSecurities	4000000	USD
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CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.04
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CY2009	ppl	Income From Continuing Operations After Tax Allocated To Participating Securities IncomeFromContinuingOperationsAfterTaxAllocatedToParticipatingSecurities	2000000	USD
CY2011	ppl	Income From Continuing Operations After Tax Available To Shareholders IncomeFromContinuingOperationsAfterTaxAvailableToShareholders	1487000000	USD
CY2010	ppl	Income From Continuing Operations After Tax Available To Shareholders IncomeFromContinuingOperationsAfterTaxAvailableToShareholders	951000000	USD
CY2009	ppl	Net Income Available To Common Shareowners NetIncomeAvailableToCommonShareowners	405000000	USD
CY2011	ppl	Purchase Contracts2010 PurchaseContracts2010	157000	shares
CY2009	ppl	Income From Continuing Operations After Tax Available To Shareholders IncomeFromContinuingOperationsAfterTaxAvailableToShareholders	412000000	USD
CY2011	ppl	Net Income Available To Common Shareowners NetIncomeAvailableToCommonShareowners	1489000000	USD
CY2010	ppl	Net Income Available To Common Shareowners NetIncomeAvailableToCommonShareowners	934000000	USD
CY2011	ppl	Income Tax Reconciliation State Clarification Of Treatment Bonus Depreciation IncomeTaxReconciliationStateClarificationOfTreatmentBonusDepreciation	43000000	USD
CY2011	ppl	Income Tax Reconciliation Impact Of Foreign Subsidiary Certain Pension Contributions IncomeTaxReconciliationImpactOfForeignSubsidiaryCertainPensionContributions	-28000000	USD
CY2010	ppl	Purchase Contracts2010 PurchaseContracts2010	0	shares
CY2009	ppl	Purchase Contracts2010 PurchaseContracts2010	0	shares
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CY2009	ppl	Reduction Of Valuation Allowance Operating Loss Carryforwards ReductionOfValuationAllowanceOperatingLossCarryforwards	13000000	USD
CY2011Q4	ppl	Undistributed Foreign Earnings Reinvested UndistributedForeignEarningsReinvested	1200000000	USD
CY2010Q4	ppl	Undistributed Foreign Earnings Reinvested UndistributedForeignEarningsReinvested	837000000	USD
CY2010	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-6000000	USD
CY2009	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	46000000	USD
CY2011	ppl	Tax Benefit From Stock Options Exercised Offset Additional Paid In Capital TaxBenefitFromStockOptionsExercisedOffsetAdditionalPaidInCapital	3000000	USD
CY2011	ppl	Tax Benefits Related To Issuance Of Purchase Contracts TaxBenefitsRelatedToIssuanceOfPurchaseContracts	5000000	USD
CY2010	ppl	Tax Benefits Related To Issuance Of Purchase Contracts TaxBenefitsRelatedToIssuanceOfPurchaseContracts	10000000	USD
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CY2010	ppl	Income Tax Expense In Other Comprehensive Income IncomeTaxExpenseInOtherComprehensiveIncome	83000000	USD
CY2009	ppl	Income Tax Expense In Other Comprehensive Income IncomeTaxExpenseInOtherComprehensiveIncome	358000000	USD
CY2010	ppl	Impact From Us Tax Court Decision On Uk Windfall Profit Tax ImpactFromUsTaxCourtDecisionOnUkWindfallProfitTax	-42000000	USD
CY2010	ppl	Impact From Us Tax Court Decision On Streetlighting ImpactFromUsTaxCourtDecisionOnStreetlighting	-7000000	USD
CY2010	ppl	Uk Tax Rate In Effect Prior To Reduction UkTaxRateInEffectPriorToReduction	0.28	pure
CY2011	ppl	Uk Tax Rate In Effect Prior To Reduction UkTaxRateInEffectPriorToReduction	0.27	pure
CY2011	ppl	Uk Tax Rate Reduction Approved Current Year For Same Year UkTaxRateReductionApprovedCurrentYearForSameYear	0.26	pure
CY2011	ppl	Uk Tax Rate Reduction Approved Current Year For Future Year UkTaxRateReductionApprovedCurrentYearForFutureYear	0.25	pure
CY2011	ppl	Depreciable Period Street Lighting Assets For Tax Purposes DepreciablePeriodStreetLightingAssetsForTaxPurposes	7	pure
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CY2011	ppl	Valuation Rollforward Specific Transaction Charged To Other Accounts ValuationRollforwardSpecificTransactionChargedToOtherAccounts	101000000	USD
CY2011	ppl	Valuation Rollforward Specific Transaction Deductions ValuationRollforwardSpecificTransactionDeductions	35000000	USD
CY2011	ppl	Components Tax Expense Excluded Related To Validation Allowances For State Deferred Taxes ComponentsTaxExpenseExcludedRelatedToValidationAllowancesForStateDeferredTaxes	3000000	USD
CY2011	ppl	Bonus Depreciation Rate BonusDepreciationRate	1.00	pure
CY2011	ppl	Net Operating Loss Limitation NetOperatingLossLimitation	0.20	pure
CY2011	ppl	Tax Benefit Related To Stranded Cost Securitization TaxBenefitRelatedToStrandedCostSecuritization	-6000000	USD
CY2010	ppl	Tax Benefit Related To Stranded Cost Securitization TaxBenefitRelatedToStrandedCostSecuritization	-7000000	USD
CY2009	ppl	Tax Benefit Related To Stranded Cost Securitization TaxBenefitRelatedToStrandedCostSecuritization	-6000000	USD
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CY2009	ppl	Income Tax Reconciliation Federal And State Tax Return Adjustments Method Change IncomeTaxReconciliationFederalAndStateTaxReturnAdjustmentsMethodChange	24000000	USD
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CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	486000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	287000000	USD
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CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	305000000	USD
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CY2011Q4	ppl	Deferred Tax Assets Other Foreign DeferredTaxAssetsOtherForeign	21000000	USD
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CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	325000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	5360000000	USD
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CY2011Q4	ppl	Deferred Tax Assets Deferred Investment Tax Credits DeferredTaxAssetsDeferredInvestmentTaxCredits	113000000	USD
CY2011Q4	us-gaap	Tax Credit Carryforward Deferred Tax Asset TaxCreditCarryforwardDeferredTaxAsset	240000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	103000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	227000000	USD
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CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1789000000	USD
CY2011Q4	ppl	Deferred Tax Liabilities Taxes Recoverable Through Future Rates DeferredTaxLiabilitiesTaxesRecoverableThroughFutureRates	-137000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3010000000	USD
CY2010Q4	ppl	Deferred Tax Liabilities Regulatory Undercollections DeferredTaxLiabilitiesRegulatoryUndercollections	22000000	USD
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CY2010Q4	us-gaap	Tax Credit Carryforward Deferred Tax Asset TaxCreditCarryforwardDeferredTaxAsset	169000000	USD
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CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	578000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	377000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	7000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	0	USD
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CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	662000000	USD
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CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	267000000	USD
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CY2010	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	308000000	USD
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CY2009	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	105000000	USD
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CY2009	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	44000000	USD
CY2009	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-72000000	USD
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CY2009	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	16000000	USD
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CY2011	ppl	Deferred Federal Income Tax Expense Benefit Related To Operating Loss Carryforwards DeferredFederalIncomeTaxExpenseBenefitRelatedToOperatingLossCarryforwards	-30000000	USD
CY2010	ppl	Deferred Federal Income Tax Expense Benefit Related To Operating Loss Carryforwards DeferredFederalIncomeTaxExpenseBenefitRelatedToOperatingLossCarryforwards	6000000	USD
CY2009	ppl	Deferred Federal Income Tax Expense Benefit Related To Operating Loss Carryforwards DeferredFederalIncomeTaxExpenseBenefitRelatedToOperatingLossCarryforwards	0	USD
CY2011	ppl	Deferred State And Local Income Tax Expense Benefit Related To Operating Loss Carryforwards DeferredStateAndLocalIncomeTaxExpenseBenefitRelatedToOperatingLossCarryforwards	-38000000	USD
CY2010	ppl	Deferred State And Local Income Tax Expense Benefit Related To Operating Loss Carryforwards DeferredStateAndLocalIncomeTaxExpenseBenefitRelatedToOperatingLossCarryforwards	-17000000	USD
CY2009	ppl	Deferred State And Local Income Tax Expense Benefit Related To Operating Loss Carryforwards DeferredStateAndLocalIncomeTaxExpenseBenefitRelatedToOperatingLossCarryforwards	0	USD
CY2011	ppl	Deferred Income Tax Expense Benefit Related To Operating Loss Carryforwards DeferredIncomeTaxExpenseBenefitRelatedToOperatingLossCarryforwards	-68000000	USD
CY2010	ppl	Deferred Income Tax Expense Benefit Related To Operating Loss Carryforwards DeferredIncomeTaxExpenseBenefitRelatedToOperatingLossCarryforwards	-11000000	USD
CY2009	ppl	Deferred Income Tax Expense Benefit Related To Operating Loss Carryforwards DeferredIncomeTaxExpenseBenefitRelatedToOperatingLossCarryforwards	0	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	770000000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	434000000	USD
CY2009	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	188000000	USD
CY2011	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	0	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-11000000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	63000000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	0	USD
CY2011	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-17000000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	13000000	USD
CY2011	ppl	Total Increase Decrease To Federal Income Tax On Income From Continuing Operations At Statuatory Tax Rate TotalIncreaseDecreaseToFederalIncomeTaxOnIncomeFromContinuingOperationsAtStatuatoryTaxRate	-79000000	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-69000000	USD
CY2011	ppl	Income Tax Reconciliation Deductions Medicare Prescription Drug Benefit Subsidy Revised IncomeTaxReconciliationDeductionsMedicarePrescriptionDrugBenefitSubsidyRevised	0	USD
CY2011	ppl	Depreciation Not Normalized DepreciationNotNormalized	-20000000	USD
CY2011	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	0	USD
CY2011	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-41000000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Contingencies Domestic IncomeTaxReconciliationTaxContingenciesDomestic	39000000	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	36000000	USD
CY2010	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-18000000	USD
CY2010	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	-261000000	USD
CY2010	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-3000000	USD
CY2010	ppl	Foreign Income Tax Return Adjustments ForeignIncomeTaxReturnAdjustments	0	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	0	USD
CY2010	ppl	Depreciation Not Normalized DepreciationNotNormalized	-3000000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	36000000	USD
CY2009	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	0	USD
CY2009	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2009	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	-46000000	USD
CY2009	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	3000000	USD
CY2009	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-22000000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	0	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Contingencies Foreign IncomeTaxReconciliationTaxContingenciesForeign	-141000000	USD
CY2011	ppl	Foreign Income Tax Return Adjustments ForeignIncomeTaxReturnAdjustments	0	USD
CY2011	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	-26000000	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Contingencies Domestic IncomeTaxReconciliationTaxContingenciesDomestic	-60000000	USD
CY2010	ppl	Income Tax Reconciliation Deductions Medicare Prescription Drug Benefit Subsidy Revised IncomeTaxReconciliationDeductionsMedicarePrescriptionDrugBenefitSubsidyRevised	8000000	USD
CY2010	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	34000000	USD
CY2010	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-65000000	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	12000000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-11000000	USD
CY2010	ppl	Total Increase Decrease To Federal Income Tax On Income From Continuing Operations At Statuatory Tax Rate TotalIncreaseDecreaseToFederalIncomeTaxOnIncomeFromContinuingOperationsAtStatuatoryTaxRate	-171000000	USD
CY2010	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	11000000	USD
CY2010	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-20000000	USD
CY2010	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	0	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Contingencies Foreign IncomeTaxReconciliationTaxContingenciesForeign	0	USD
CY2009	ppl	Foreign Income Tax Return Adjustments ForeignIncomeTaxReturnAdjustments	0	USD
CY2009	ppl	Total Increase Decrease To Federal Income Tax On Income From Continuing Operations At Statuatory Tax Rate TotalIncreaseDecreaseToFederalIncomeTaxOnIncomeFromContinuingOperationsAtStatuatoryTaxRate	-83000000	USD
CY2009	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-23000000	USD
CY2009	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	21000000	USD
CY2009	us-gaap	Income Tax Reconciliation Tax Contingencies Foreign IncomeTaxReconciliationTaxContingenciesForeign	17000000	USD
CY2009	ppl	Depreciation Not Normalized DepreciationNotNormalized	-1000000	USD
CY2009	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	2000000	USD
CY2009	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	-16000000	USD
CY2009	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	10000000	USD
CY2009	ppl	Income Tax Reconciliation Deductions Medicare Prescription Drug Benefit Subsidy Revised IncomeTaxReconciliationDeductionsMedicarePrescriptionDrugBenefitSubsidyRevised	0	USD
CY2009	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-13000000	USD
CY2009	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	0	USD
CY2009	us-gaap	Income Tax Reconciliation Tax Contingencies Domestic IncomeTaxReconciliationTaxContingenciesDomestic	-5000000	USD
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2011	ppl	Income Tax Reconciliation Foreign Valuation Allowance Adjustments IncomeTaxReconciliationForeignValuationAllowanceAdjustments	147000000	USD
CY2010	ppl	Income Tax Reconciliation Foreign Valuation Allowance Adjustments IncomeTaxReconciliationForeignValuationAllowanceAdjustments	215000000	USD
CY2009	ppl	Income Tax Reconciliation Foreign Valuation Allowance Adjustments IncomeTaxReconciliationForeignValuationAllowanceAdjustments	0	USD
CY2011	ppl	Income Tax Reconciliation State Deferred Tax Change IncomeTaxReconciliationStateDeferredTaxChange	-26000000	USD
CY2010	ppl	Income Tax Reconciliation State Deferred Tax Change IncomeTaxReconciliationStateDeferredTaxChange	0	USD
CY2009	ppl	Income Tax Reconciliation State Deferred Tax Change IncomeTaxReconciliationStateDeferredTaxChange	0	USD
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.314	pure
CY2010	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.212	pure
CY2009	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.195	pure
CY2011	ppl	Period For Under Recoveries Recovery PeriodForUnderRecoveriesRecovery	3	pure
CY2011	ppl	Taxes Other Than Income State Gross Receipts Tax Expense Benefit TaxesOtherThanIncomeStateGrossReceiptsTaxExpenseBenefit	140000000	USD
CY2010	ppl	Taxes Other Than Income State Gross Receipts Tax Expense Benefit TaxesOtherThanIncomeStateGrossReceiptsTaxExpenseBenefit	145000000	USD
CY2011	ppl	Taxes Other Than Income Utility Realty Tax Expense Benefit TaxesOtherThanIncomeUtilityRealtyTaxExpenseBenefit	-9000000	USD
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	212000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	40000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	160000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	25000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	4000000	USD
CY2010	ppl	Taxes Other Than Income Utility Realty Tax Expense Benefit TaxesOtherThanIncomeUtilityRealtyTaxExpenseBenefit	5000000	USD
CY2011	ppl	Taxes Other Than Income State Capital Stock Tax Expense Benefit TaxesOtherThanIncomeStateCapitalStockTaxExpenseBenefit	18000000	USD
CY2010	ppl	Taxes Other Than Income State Capital Stock Tax Expense Benefit TaxesOtherThanIncomeStateCapitalStockTaxExpenseBenefit	6000000	USD
CY2011	ppl	Taxes Other Than Income Foreign Property Tax Expense Benefit TaxesOtherThanIncomeForeignPropertyTaxExpenseBenefit	113000000	USD
CY2010	ppl	Taxes Other Than Income Foreign Property Tax Expense Benefit TaxesOtherThanIncomeForeignPropertyTaxExpenseBenefit	52000000	USD
CY2011	ppl	Taxes Other Than Income Domestic Property And Other TaxesOtherThanIncomeDomesticPropertyAndOther	64000000	USD
CY2010	ppl	Taxes Other Than Income Domestic Property And Other TaxesOtherThanIncomeDomesticPropertyAndOther	30000000	USD
CY2009	ppl	Taxes Other Than Income State Capital Stock Tax Expense Benefit TaxesOtherThanIncomeStateCapitalStockTaxExpenseBenefit	6000000	USD
CY2009	ppl	Taxes Other Than Income Foreign Property Tax Expense Benefit TaxesOtherThanIncomeForeignPropertyTaxExpenseBenefit	57000000	USD
CY2009	ppl	Taxes Other Than Income State Gross Receipts Tax Expense Benefit TaxesOtherThanIncomeStateGrossReceiptsTaxExpenseBenefit	187000000	USD
CY2009	ppl	Taxes Other Than Income Domestic Property And Other TaxesOtherThanIncomeDomesticPropertyAndOther	25000000	USD
CY2009	ppl	Taxes Other Than Income Utility Realty Tax Expense Benefit TaxesOtherThanIncomeUtilityRealtyTaxExpenseBenefit	5000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	10000000	USD
CY2011	ppl	Unrecognized Tax Benefits Resulting From Acquisition Of Company UnrecognizedTaxBenefitsResultingFromAcquisitionOfCompany	0	USD
CY2011	ppl	Effects Of Foreign Currency Translation Unrecognized Tax Benefits EffectsOfForeignCurrencyTranslationUnrecognizedTaxBenefits	3000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	145000000	USD
CY2010	ppl	Unrecognized Tax Benefits Resulting From Acquisition Of Company UnrecognizedTaxBenefitsResultingFromAcquisitionOfCompany	3000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	2000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	251000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	43000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	8000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	50000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities	17000000	USD
CY2010	ppl	Effects Of Foreign Currency Translation Unrecognized Tax Benefits EffectsOfForeignCurrencyTranslationUnrecognizedTaxBenefits	2000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	68000000	USD
CY2011Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Estimated Range Of Change Upper Bound SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound	43000000	USD
CY2011Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Estimated Range Of Change Lower Bound SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound	129000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	41000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	183000000	USD
CY2011Q4	ppl	Accrued Interest Related To Open Tax Positions AccruedInterestRelatedToOpenTaxPositions	-20000000	USD
CY2010Q4	ppl	Accrued Interest Related To Open Tax Positions AccruedInterestRelatedToOpenTaxPositions	7000000	USD
CY2011	ppl	Interest And Penalties Related To Open Tax Positions In Income Tax Expense InterestAndPenaltiesRelatedToOpenTaxPositionsInIncomeTaxExpense	27000000	USD
CY2010	ppl	Interest And Penalties Related To Open Tax Positions In Income Tax Expense InterestAndPenaltiesRelatedToOpenTaxPositionsInIncomeTaxExpense	-39000000	USD
CY2009	ppl	Interest And Penalties Related To Open Tax Positions In Income Tax Expense InterestAndPenaltiesRelatedToOpenTaxPositionsInIncomeTaxExpense	1000000	USD
CY2011	ppl	Number Of Components Of Plan Requested To Modify NumberOfComponentsOfPlanRequestedToModify	2	pure
CY2011	ppl	Capacity Turbines Pending Purchase CapacityTurbinesPendingPurchase	495	MW
CY2011	ppl	Percentage Of Reduced Electricity Consumption Required By Act129 By2011 PercentageOfReducedElectricityConsumptionRequiredByAct129By2011	0.01	pure
CY2011	ppl	Percentage Of Reduced Electricity Consumption Required By Act129 By2013 PercentageOfReducedElectricityConsumptionRequiredByAct129By2013	0.03	pure
CY2011	ppl	Percentage Of Reduced Peak Demand Required By Act129 By2013 PercentageOfReducedPeakDemandRequiredByAct129By2013	0.045	pure
CY2011	ppl	Proposed Cost Recovery Cap Over Year2006 Revenue ProposedCostRecoveryCapOverYear2006Revenue	0.02	pure
CY2011	ppl	Number Of Pennsylvania Public Utility Commission Approved Programs Under Energy Efficiency And Conservation Plan NumberOfPennsylvaniaPublicUtilityCommissionApprovedProgramsUnderEnergyEfficiencyAndConservationPlan	14	pure
CY2011	ppl	Number Phases Investigation Retail Electricity Market NumberPhasesInvestigationRetailElectricityMarket	2	pure
CY2011	ppl	Low Voltage Overhead Electricity Network Clearance LowVoltageOverheadElectricityNetworkClearance	3	pure
CY2011Q4	ppl	Projected Amount To Comply With Overhead Clearance Standard ProjectedAmountToComplyWithOverheadClearanceStandard	120000000	USD
CY2011	ppl	Period Of Time Costs For Overhead Clearance To Be Recovered Through Rates PeriodOfTimeCostsForOverheadClearanceToBeRecoveredThroughRates	5	pure
CY2011Q4	ppl	Projected Amount To Comply With Risk Based Program Regulation ProjectedAmountToComplyWithRiskBasedProgramRegulation	198000000	USD
CY2011Q2	ppl	Liability For Tree Trimming Recorded As Part Purchase Accounting LiabilityForTreeTrimmingRecordedAsPartPurchaseAccounting	68000000	USD
CY2011	ppl	Recurring Period Price Control Review RecurringPeriodPriceControlReview	5	pure
CY2011	ppl	Period Costs Riskbased Program To Be Recovered Through Rates PeriodCostsRiskbasedProgramToBeRecoveredThroughRates	25	pure
CY2011	ppl	Requested Amount Related To Environmental Upgrades RequestedAmountRelatedToEnvironmentalUpgrades	2500000000	USD
CY2011	ppl	Regulatory Matters Kentucky Integrated Resource Planning Peak Demand Decline Assumption RegulatoryMattersKentuckyIntegratedResourcePlanningPeakDemandDeclineAssumption	500	MW
CY2011	ppl	Capacity Proposed Natural Gas Fired Combined Cycle Turbine Kentucky CapacityProposedNaturalGasFiredCombinedCycleTurbineKentucky	640	MW
CY2011	ppl	Undivided Ownership Interest In Proposed Combine Cycle Turbine Subsidiary One UndividedOwnershipInterestInProposedCombineCycleTurbineSubsidiaryOne	0.78	pure
CY2011	ppl	Combined Capacity Anticipated Plant Retirements Due To Replacement Construction CombinedCapacityAnticipatedPlantRetirementsDueToReplacementConstruction	797	MW
CY2011	ppl	Combined Purchase Price Bluegrass Natural Gas Combined Cycle Turbine CombinedPurchasePriceBluegrassNaturalGasCombinedCycleTurbine	800000000	USD
CY2011	ppl	Undivided Ownership Interest In Proposed Combine Cycle Turbine Subsidiary Two UndividedOwnershipInterestInProposedCombineCycleTurbineSubsidiaryTwo	0.22	pure
CY2011	ppl	Undivided Ownership Interest In Purchase Of Turbines Subsidiary Two UndividedOwnershipInterestInPurchaseOfTurbinesSubsidiaryTwo	0.69	pure
CY2011	ppl	Undivided Ownership Interest In Purchase Of Turbines Subsidiary One UndividedOwnershipInterestInPurchaseOfTurbinesSubsidiaryOne	0.31	pure
CY2011	ppl	Return On Equity Approved Projects Remaining From Earlier Environmental Cost Recovery Plans ReturnOnEquityApprovedProjectsRemainingFromEarlierEnvironmentalCostRecoveryPlans	0.1063	pure
CY2011	ppl	Number Of Anticipated Plant Retirements Due To Replacement Construction NumberOfAnticipatedPlantRetirementsDueToReplacementConstruction	3	pure
CY2011	ppl	Capital Costs Deferred In Connection With Certain Environmental Upgrades At Ew Brown Plant CapitalCostsDeferredInConnectionWithCertainEnvironmentalUpgradesAtEwBrownPlant	200000000	USD
CY2011	ppl	Regulatory Matters Pennsylvania Activities Maximum Rate Recovery Of Proposed Plan Rate Mechanism RegulatoryMattersPennsylvaniaActivitiesMaximumRateRecoveryOfProposedPlanRateMechanism	250000000	USD
CY2011	ppl	Minimum Duration Of Long Term Procurement Contracts MinimumDurationOfLongTermProcurementContracts	4	pure
CY2011	ppl	Maximum Duration Of Long Term Procurement Contracts MaximumDurationOfLongTermProcurementContracts	20	pure
CY2011	ppl	Maximum Percentage Of Long Term Contracts For Electric Generation Supply Service MaximumPercentageOfLongTermContractsForElectricGenerationSupplyService	0.25	pure
CY2011	ppl	Maximum Depreciable Life For New Smart Meter Technology In New Construction MaximumDepreciableLifeForNewSmartMeterTechnologyInNewConstruction	15	pure
CY2010Q3	ppl	Estimated Cost Of Study On Expanded Use Of Smart Meter EstimatedCostOfStudyOnExpandedUseOfSmartMeter	38000000	USD
CY2010Q3	ppl	Projected Numbers Of Years To Conduct Study On Smart Meters ProjectedNumbersOfYearsToConductStudyOnSmartMeters	5	pure
CY2011	ppl	Liability For Tree Trimming Recorded As Part Purchase Accounting LiabilityForTreeTrimmingRecordedAsPartPurchaseAccounting	57000000	USD
CY2011Q4	ppl	Prior Price Control Period Line Loss Estimated Refund PriorPriceControlPeriodLineLossEstimatedRefund	170000000	USD
CY2011	ppl	Utility Rate Proposed Price Review Period UtilityRateProposedPriceReviewPeriod	8	pure
CY2011	ppl	Virginia Integrated Resource Planning Peak Demand Decline Assumption VirginiaIntegratedResourcePlanningPeakDemandDeclineAssumption	500	MW
CY2011	ppl	Environmental Protection Number Of Factors To Make Site Specific Determination EnvironmentalProtectionNumberOfFactorsToMakeSiteSpecificDetermination	9	pure
CY2011Q4	us-gaap	Amount Of Restricted Net Assets For Consolidated And Unconsolidated Subsidiaries AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries	4400000000	USD
CY2012Q1	us-gaap	Dividends Payable Date Declared Month And Year DividendsPayableDateDeclaredMonthAndYear	2012-02
CY2012Q1	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2012-04-01
CY2012Q1	ppl	Quarterly Common Stock Dividend Change QuarterlyCommonStockDividendChange	0.360
CY2012Q1	ppl	Common Stock Dividends Per Share Declared As Per Annum Equivalent CommonStockDividendsPerShareDeclaredAsPerAnnumEquivalent	1.44
CY2011	us-gaap	Debt Instrument Maturity Date Range End DebtInstrumentMaturityDateRangeEnd	2047
CY2010	us-gaap	Debt Instrument Maturity Date Range End DebtInstrumentMaturityDateRangeEnd	2047
CY2011Q2	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	92000000	shares
CY2011Q2	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	25.30
CY2011Q2	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	2258000000	USD
CY2011Q2	us-gaap	Equity Issuance Dates EquityIssuanceDates	2011-04-30
CY2010Q2	us-gaap	Equity Issuance Dates EquityIssuanceDates	2011-06-30
CY2010Q2	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	103500000	shares
CY2010Q2	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	24.00
CY2011Q2	us-gaap	Equity Issuance Total Dollar Amount EquityIssuanceTotalDollarAmount	2328000000	USD
CY2011	ppl	Number Of Hours That Are Benchmark For Demand Reductions NumberOfHoursThatAreBenchmarkForDemandReductions	100	pure
CY2011	ppl	Earned Rate Of Return On Common Equity For Fifty Percent Of Excess Amount Deferred EarnedRateOfReturnOnCommonEquityForFiftyPercentOfExcessAmountDeferred	0.1075	pure
CY2011	ppl	Requested Amount Related To Environmental Upgrades Subsidiary A RequestedAmountRelatedToEnvironmentalUpgradesSubsidiaryA	1400000000	USD
CY2011	ppl	Requested Amount Related To Environmental Upgrades Subsidiary B RequestedAmountRelatedToEnvironmentalUpgradesSubsidiaryB	900000000	USD
CY2011	ppl	Return On Equity Approved Projects In2011 Environmental Cost Recovery Proceedings ReturnOnEquityApprovedProjectsIn2011EnvironmentalCostRecoveryProceedings	0.1010	pure
CY2011Q4	ppl	Federal Energy Regulatory Commission Formula Regulatory Asset Recorded For Certain Deferred State Tax Assets FederalEnergyRegulatoryCommissionFormulaRegulatoryAssetRecordedForCertainDeferredStateTaxAssets	51000000	USD
CY2011	ppl	Federal Energy Regulatory Commission Formula Requested Recovery Period FederalEnergyRegulatoryCommissionFormulaRequestedRecoveryPeriod	34 year
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	0	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	737000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	310000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1300000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	810000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	14825000000	USD
CY2011Q2	ppl	Underwriting Discount Incurred With Specific Equity Offering UnderwritingDiscountIncurredWithSpecificEquityOffering	70000000	USD
CY2010Q2	us-gaap	Equity Issuance Total Dollar Amount EquityIssuanceTotalDollarAmount	2484000000	USD
CY2010Q2	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	2409000000	USD
CY2010Q2	ppl	Underwriting Discount Incurred With Specific Equity Offering UnderwritingDiscountIncurredWithSpecificEquityOffering	75000000	USD
CY2011Q4	us-gaap	Dividends Payable Date Declared Month And Year DividendsPayableDateDeclaredMonthAndYear	2011-11
CY2011Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.350
CY2011Q4	ppl	Common Stock Dividends Per Share Declared As Per Annum Equivalent CommonStockDividendsPerShareDeclaredAsPerAnnumEquivalent	1.40
CY2011	ppl	Dividend Rate Per Share On Preference Shares DividendRatePerShareOnPreferenceShares	1.5625
CY2011Q4	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2012-01-03
CY2011Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	17982000000	USD
CY2011Q4	ppl	Fair Value Adjustments From Hedging Activities FairValueAdjustmentsFromHedgingActivities	3000000	USD
CY2011Q4	ppl	Fair Value Adjustments From Purchase Accounting FairValueAdjustmentsFromPurchaseAccounting	62000000	USD
CY2011Q4	us-gaap	Debt Instrument Unamortized Premium DebtInstrumentUnamortizedPremium	5000000	USD
CY2011Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	59000000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	17993000000	USD
CY2010Q4	ppl	Fair Value Adjustments From Hedging Activities FairValueAdjustmentsFromHedgingActivities	50000000	USD
CY2010Q4	us-gaap	Net Income Loss NetIncomeLoss	355000000	USD
CY2010Q4	ppl	Fair Value Adjustments From Purchase Accounting FairValueAdjustmentsFromPurchaseAccounting	38000000	USD
CY2010Q4	us-gaap	Debt Instrument Unamortized Premium DebtInstrumentUnamortizedPremium	7000000	USD
CY2010Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	36000000	USD
CY2010Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	12604000000	USD
CY2010Q4	us-gaap	Long Term Debt LongTermDebt	12663000000	USD
CY2011	ppl	Number Of Applicants For Nuclear Guarantee NumberOfApplicantsForNuclearGuarantee	10	pure
CY2011Q4	ppl	Termination Value Of Operating Lease TerminationValueOfOperatingLease	6000000	USD
CY2009	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	86000000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	90000000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	109000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	125000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	127000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	123000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	105000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	57000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	252000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	789000000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodMinimum	3
CY2011	ppl	Number Of Western States Covered By Western Climate Initiative NumberOfWesternStatesCoveredByWesternClimateInitiative	11	pure
CY2011	ppl	Period End Number Of Plaintiffs In Secondary Environmental Litigation PeriodEndNumberOfPlaintiffsInSecondaryEnvironmentalLitigation	6	pure
CY2011	ppl	Environmental Protection Rule On Impact Of Cooling Towers On Aquatic Organisms EnvironmentalProtectionRuleOnImpactOfCoolingTowersOnAquaticOrganisms	2	pure
CY2009	ppl	Number Of Employees Terminated In Workforce Reduction NumberOfEmployeesTerminatedInWorkforceReduction	200	pure
CY2009	ppl	Percentage Of Employees Terminated In Workforce Reduction PercentageOfEmployeesTerminatedInWorkforceReduction	0.06	pure
CY2009	us-gaap	Severance Costs SeveranceCosts	22000000	USD
CY2009	ppl	Severance Costs After Tax SeveranceCostsAfterTax	13000000	USD
CY2010	ppl	Health Care Reform Deferred Tax Assets HealthCareReformDeferredTaxAssets	13000000	USD
CY2010	ppl	Health Care Reform Regulatory Assets HealthCareReformRegulatoryAssets	9000000	USD
CY2010	ppl	Health Care Reform Deferred Tax Liabilities HealthCareReformDeferredTaxLiabilities	4000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYear	0	USD
CY2011	ppl	Defined Benefit Plan Weighted Average Coupon DefinedBenefitPlanWeightedAverageCoupon	0.0396	pure
CY2011Q4	ppl	Coal Industry Retiree Health Benefit Act Of1992 Net Recorded Liability CoalIndustryRetireeHealthBenefitActOf1992NetRecordedLiability	6000000	USD
CY2011Q4	us-gaap	Coal Industry Retiree Health Benefit Act Of1992 Estimated Amount Of Total Obligation CoalIndustryRetireeHealthBenefitActOf1992EstimatedAmountOfTotalObligation	67000000	USD
CY2011Q4	ppl	Coal Industry Retiree Health Benefit Act Of1992 Assets In Voluntary Employee Benefit Association Trust CoalIndustryRetireeHealthBenefitActOf1992AssetsInVoluntaryEmployeeBenefitAssociationTrust	31000000	USD
CY2011Q4	ppl	Coal Industry Retiree Health Benefit Act Of1992 Assets In Black Lung Trust CoalIndustryRetireeHealthBenefitActOf1992AssetsInBlackLungTrust	30000000	USD
CY2011	ppl	Employee Stock Ownership Plan Allocation Based On Prorata Shares Held Percentage EmployeeStockOwnershipPlanAllocationBasedOnProrataSharesHeldPercentage	0.75	pure
CY2011	ppl	Employee Stock Ownership Plan Allocation Based On Compensation Percentage EmployeeStockOwnershipPlanAllocationBasedOnCompensationPercentage	0.25	pure
CY2011	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	8000000	USD
CY2011Q4	us-gaap	Employee Stock Ownership Plan Esop Shares In Esop EmployeeStockOwnershipPlanESOPSharesInESOP	7867977	shares
CY2011Q4	ppl	Employee Stock Ownership Plan Shares Percentage Of Total Common Shares Outstanding EmployeeStockOwnershipPlanSharesPercentageOfTotalCommonSharesOutstanding	0.01	pure
CY2011	ppl	Proposed Renewable Energy Supply Energy Efficiency Requirement Stated Percentage Rate Range Maximum ProposedRenewableEnergySupplyEnergyEfficiencyRequirementStatedPercentageRateRangeMaximum	0.20	pure
CY2011	ppl	Number Of Approaches Proposed By Environmental Protection Agency To Regulate Coal Combustion Residuals June2010 NumberOfApproachesProposedByEnvironmentalProtectionAgencyToRegulateCoalCombustionResidualsJune2010	2	pure
CY2011	ppl	Number Of Units At Facility Where Environmental Issue Occurred NumberOfUnitsAtFacilityWhereEnvironmentalIssueOccurred	2	pure
CY2011Q4	ppl	Percentage Of Leasehold Interest In Colstrip Units1 And2 PercentageOfLeaseholdInterestInColstripUnits1And2	0.50	pure
CY2011Q4	ppl	Percentage Of Leasehold Interest In Colstrip Unit3 PercentageOfLeaseholdInterestInColstripUnit3	0.30	pure
CY2011Q4	ppl	Percentage Of Leasehold Interest By North Western In Colstrip Unit4 PercentageOfLeaseholdInterestByNorthWesternInColstripUnit4	0.30	pure
CY2011Q4	ppl	Proportionate Share By Each Party Of Operating And Construction Costs Regarding Colstrip Unit3 Or4 ProportionateShareByEachPartyOfOperatingAndConstructionCostsRegardingColstripUnit3Or4	0.15	pure
CY2011	ppl	Competitive Solicitations To Be Held For Provider Of Last Resort Supply Post2010 Shortest Term Purchase CompetitiveSolicitationsToBeHeldForProviderOfLastResortSupplyPost2010ShortestTermPurchase	5	pure
CY2011	ppl	Competitive Solicitations To Be Held For Provider Of Last Resort Supply Post2010 Longest Term Purchase CompetitiveSolicitationsToBeHeldForProviderOfLastResortSupplyPost2010LongestTermPurchase	10	pure
CY2011	ppl	Loss Contingency Interest Accrual Rate LossContingencyInterestAccrualRate	0.10	pure
CY2011	ppl	Initial Time Period Required To Respond To Info Request InitialTimePeriodRequiredToRespondToInfoRequest	3	pure
CY2011	ppl	Subsequent Frequency Required To Respond To Info Request SubsequentFrequencyRequiredToRespondToInfoRequest	3	pure
CY2011	ppl	Period Of Projected Expenditures PeriodOfProjectedExpenditures	5	pure
CY2011	ppl	Statutory Period After Order For Compliance With Maximum Achievable Control Technology Standards StatutoryPeriodAfterOrderForComplianceWithMaximumAchievableControlTechnologyStandards	3	pure
CY2011	ppl	Statutory Period After Order For Extension With Maximum Achievable Control Technology Standards StatutoryPeriodAfterOrderForExtensionWithMaximumAchievableControlTechnologyStandards	1	pure
CY2011	ppl	Number Of States Signing Memorandum Of Understanding Establishing Regional Greenhouse Gas Initiative NumberOfStatesSigningMemorandumOfUnderstandingEstablishingRegionalGreenhouseGasInitiative	10	pure
CY2011	ppl	Percentage Reduction Carbon Dioxide From Base By2019 Per Regional Greenhouse Gas Initiative PercentageReductionCarbonDioxideFromBaseBy2019PerRegionalGreenhouseGasInitiative	0.10	pure
CY2011	ppl	Percentage Reduction Greenhouse Gas By2020 Per Pennsylvania Advisory Climate Change Action Report PercentageReductionGreenhouseGasBy2020PerPennsylvaniaAdvisoryClimateChangeActionReport	0.30	pure
CY2011	ppl	Proposed Mandatory Percentage Of Efficiency Improvements Power Per Plants Pennsylvania Advisory Climate Change Action Report ProposedMandatoryPercentageOfEfficiencyImprovementsPowerPerPlantsPennsylvaniaAdvisoryClimateChangeActionReport	0.05	pure
CY2011	ppl	Percentage Reduction Carbon Dioxide By2020 Below2005 Level Per Western Climate Initiative PercentageReductionCarbonDioxideBy2020Below2005LevelPerWesternClimateInitiative	0.15	pure
CY2011	ppl	Proposed Renewable Energy Supply Energy Efficiency Requirement Stated Percentage Rate Range Minimum ProposedRenewableEnergySupplyEnergyEfficiencyRequirementStatedPercentageRateRangeMinimum	0.15	pure
CY2011	ppl	Number Of Alternatives Provided To Department Of Environmental Protection To Address Fish Kill Issues NumberOfAlternativesProvidedToDepartmentOfEnvironmentalProtectionToAddressFishKillIssues	3	pure
CY2011	ppl	Number Of Subsidiaries Pumping Mine Water NumberOfSubsidiariesPumpingMineWater	1	pure
CY2011	ppl	Number Of Mine Sites Being Pumped And Treated NumberOfMineSitesBeingPumpedAndTreated	2	pure
CY2011	ppl	Number Of Mine Sites Being Treated NumberOfMineSitesBeingTreated	1	pure
CY2011Q4	us-gaap	Site Contingency Accrual Present Value SiteContingencyAccrualPresentValue	24000000	USD
CY2011	ppl	Period Of Time To Pump And Treat Ground Water At Two Mine Sites PeriodOfTimeToPumpAndTreatGroundWaterAtTwoMineSites	50	pure
CY2011Q4	us-gaap	Accrual For Environmental Loss Contingencies Discount Rate AccrualForEnvironmentalLossContingenciesDiscountRate	0.0815	pure
CY2011Q4	ppl	Accrual For Environmental Loss Contingencies Undiscounted Expected Payments Year One AccrualForEnvironmentalLossContingenciesUndiscountedExpectedPaymentsYearOne	2000000	USD
CY2011Q4	ppl	Accrual For Environmental Loss Contingencies Undiscounted Expected Payments Each Of Year Two Through Four AccrualForEnvironmentalLossContingenciesUndiscountedExpectedPaymentsEachOfYearTwoThroughFour	1000000	USD
CY2011Q4	us-gaap	Accrual For Environmental Loss Contingencies Undiscounted Due After Fifth Year AccrualForEnvironmentalLossContingenciesUndiscountedDueAfterFifthYear	133000000	USD
CY2011	ppl	Number Of Reports Issued By United Kingdom Stakeholder Group On Electric Magnetic Fields NumberOfReportsIssuedByUnitedKingdomStakeholderGroupOnElectricMagneticFields	2	pure
CY2011	ppl	Kilovoltt Capacity Overhead Line Proposed Phase Out KilovolttCapacityOverheadLineProposedPhaseOut	132	Kilovolts
CY2011	ppl	Projected Amount To Implement Flood Prevention Measures ProjectedAmountToImplementFloodPreventionMeasures	44000000	USD
CY2011	ppl	Number Of Years Flood Prevention Costs To Be Recovered Through Rates NumberOfYearsFloodPreventionCostsToBeRecoveredThroughRates	10	pure
CY2011Q4	ppl	Maximum Amount Of Insured Property Damages Losses Coverage Nuclear Plant MaximumAmountOfInsuredPropertyDamagesLossesCoverageNuclearPlant	2750000000	USD
CY2011Q4	ppl	Maximum Assessment Retroactive Premiums Insured Outage Loss Coverage MaximumAssessmentRetroactivePremiumsInsuredOutageLossCoverage	44000000	USD
CY2011Q4	ppl	Maximum Amount For Public Liability Claims For Nuclear Incident MaximumAmountForPublicLiabilityClaimsForNuclearIncident	12600000000	USD
CY2011Q4	ppl	Maximum Amount Assessed For Nuclear Incident MaximumAmountAssessedForNuclearIncident	235000000	USD
CY2011Q4	ppl	Maximum Amount Payable Per Year Assessed For Nuclear Incident MaximumAmountPayablePerYearAssessedForNuclearIncident	35000000	USD
CY2011	ppl	Environmental Protection Agency Proposed Standard For Arsenic Particles In Drinking Water EnvironmentalProtectionAgencyProposedStandardForArsenicParticlesInDrinkingWater	0.1	pure
CY2011	ppl	Environmental Protection Agency Estimated Increase In Risk Of Cancer Caused By Arsenic Exposure EnvironmentalProtectionAgencyEstimatedIncreaseInRiskOfCancerCausedByArsenicExposure	20 times
CY2011	ppl	Environmental Protection Agency Standard Drinking Water Related To Arsenic EnvironmentalProtectionAgencyStandardDrinkingWaterRelatedToArsenic	10	pure
CY2011Q4	ppl	Environmental Remediation Costs Paid EnvironmentalRemediationCostsPaid	28000000	USD
CY2011	ppl	Megawatt Capacity Of Each Unit At Facility Where Environmental Issue Occurred MegawattCapacityOfEachUnitAtFacilityWhereEnvironmentalIssueOccurred	150	MW
CY2011	ppl	Amount Of Gallons Of Pollutants Released Into Environment At Facility AmountOfGallonsOfPollutantsReleasedIntoEnvironmentAtFacility	100000000	Gallons
CY2010	ppl	Carbon Dioxide Emitted Power Plants During Reporting Period CarbonDioxideEmittedPowerPlantsDuringReportingPeriod	68000000	Tons
CY2011	ppl	Carbon Dioxide Emitted Power Plants During Reporting Period CarbonDioxideEmittedPowerPlantsDuringReportingPeriod	74000000	Tons
CY2011	ppl	Number Of Electric Utility Companies That Could Be Sued Under Federal Common Law NumberOfElectricUtilityCompaniesThatCouldBeSuedUnderFederalCommonLaw	5	pure
CY2011	ppl	Number Companies Cited Greenhouse Gas Case NumberCompaniesCitedGreenhouseGasCase	87	pure
CY2011Q4	ppl	Threshold Capacity Of Electric Power Plants Under Memorandum Of Understanding Establishing Regional Greenhouse Gas Initiative ThresholdCapacityOfElectricPowerPlantsUnderMemorandumOfUnderstandingEstablishingRegionalGreenhouseGasInitiative	3	MW
CY2011Q4	ppl	Proportionate Share Of Ohio Valley Electric Corporation Outstanding Debt ProportionateShareOfOhioValleyElectricCorporationOutstandingDebt	117000000	USD
CY2012Q1	ppl	Number Of Competitive Solicitations Completed For Provider Of Last Resort Supply Post2010 NumberOfCompetitiveSolicitationsCompletedForProviderOfLastResortSupplyPost2010	10	pure
CY2012Q1	ppl	Total Number Of Competitive Solicitations To Be Held For Provider Of Last Resort Supply Post2010 TotalNumberOfCompetitiveSolicitationsToBeHeldForProviderOfLastResortSupplyPost2010	14	pure
CY2011	ppl	Spent Nuclear Fuel Litigation Settlement Proceeds SpentNuclearFuelLitigationSettlementProceeds	50000000	USD
CY2011	ppl	Through20002006 Compensation Awarded For Lease Payment Under Hydro Electric Litigation For Riverbed Use Through20002006CompensationAwardedForLeasePaymentUnderHydroElectricLitigationForRiverbedUse	35000000	USD
CY2011	ppl	Compensation In2007 Awarded For Lease Payment Under Hydro Electric Litigation For Riverbed Use CompensationIn2007AwardedForLeasePaymentUnderHydroElectricLitigationForRiverbedUse	6000000	USD
CY2010Q1	ppl	Hydro Loss Contingency Loss In Period Pre Tax HydroLossContingencyLossInPeriodPreTax	56000000	USD
CY2010Q1	ppl	Loss Contingency Loss In Period Net Of Tax LossContingencyLossInPeriodNetOfTax	34000000	USD
CY2010Q1	ppl	Loss Contingency Loss In Period Loss Per Share LossContingencyLossInPeriodLossPerShare	0.08
CY2010Q1	ppl	Loss Contingency Loss In Period Related To Prior Periods LossContingencyLossInPeriodRelatedToPriorPeriods	54000000	USD
CY2010Q1	ppl	Loss Contingency Loss In Period Related To Prior Periods Net Of Tax LossContingencyLossInPeriodRelatedToPriorPeriodsNetOfTax	32000000	USD
CY2010Q1	ppl	Loss Contingency Loss In Period Recorded In Operating Expenses LossContingencyLossInPeriodRecordedInOperatingExpenses	49000000	USD
CY2010Q1	ppl	Loss Contingency Loss In Period Recorded In Interest Expense LossContingencyLossInPeriodRecordedInInterestExpense	7000000	USD
CY2011	ppl	Maximum Per Day Penalty Federal Energy Regulatory Commission May Assess Under Reliability Standards MaximumPerDayPenaltyFederalEnergyRegulatoryCommissionMayAssessUnderReliabilityStandards	1000000	USD
CY2009	ppl	Loss Contingency Loss Accrual Adjustment LossContingencyLossAccrualAdjustment	8000000	USD
CY2009	ppl	Loss Contingency Loss Accrual Adjustment Net Of Tax LossContingencyLossAccrualAdjustmentNetOfTax	5000000	USD
CY2009	ppl	Loss Contingency Loss Accrual Adjustment Prior Periods LossContingencyLossAccrualAdjustmentPriorPeriods	5000000	USD
CY2009	ppl	Loss Contingency Loss Accrual Adjustment Prior Periods Net Of Tax LossContingencyLossAccrualAdjustmentPriorPeriodsNetOfTax	3000000	USD
CY2011	ppl	Number Hydro Electric Facilities In Montana NumberHydroElectricFacilitiesInMontana	11	pure
CY2011Q4	ppl	Number Storage Reservoirs In Montana NumberStorageReservoirsInMontana	1	pure
CY2011	ppl	Total Term Of Kerr Dam Project License TotalTermOfKerrDamProjectLicense	50	pure
CY2011	ppl	Term Company Required To Operate Kerr Dam Project TermCompanyRequiredToOperateKerrDamProject	30	pure
CY2011Q4	ppl	Period End Estimate Of Remaining Commitment On Kerr Dam Project PeriodEndEstimateOfRemainingCommitmentOnKerrDamProject	8000000	USD
CY2011Q4	ppl	Number Of Memoranda Of Understandings Related To Missouri Madison Project NumberOfMemorandaOfUnderstandingsRelatedToMissouriMadisonProject	2	pure
CY2011	ppl	Number Of Dams Related To Missouri Madison Project NumberOfDamsRelatedToMissouriMadisonProject	9	pure
CY2011Q4	ppl	Estimate Of Remaining Commitment On Specific Missouri Madison Project EstimateOfRemainingCommitmentOnSpecificMissouriMadisonProject	32000000	USD
CY2011	ppl	Number Pounds Per Ton Carbon Dioxide Emissions NumberPoundsPerTonCarbonDioxideEmissions	2000	Pounds
CY2011	ppl	Projected Capital Expenditure Cost For Seperate Subsidiary ProjectedCapitalExpenditureCostForSeperateSubsidiary	130000000	USD
CY2011	ppl	Percentage Ownership Hundreths With Certain Environmental Litigation PercentageOwnershipHundrethsWithCertainEnvironmentalLitigation	0.1625	pure
CY2011	ppl	Company Portion Of Potential Civil Penalty CompanyPortionOfPotentialCivilPenalty	500000	USD
CY2011	ppl	Loss Contingency Pre Tax Loss Accrual Reversal LossContingencyPreTaxLossAccrualReversal	89000000	USD
CY2011	ppl	Loss Contingency After Tax Loss Accrual Reversal LossContingencyAfterTaxLossAccrualReversal	53000000	USD
CY2011	ppl	Loss Contingency Reversal Per Share LossContingencyReversalPerShare	0.09
CY2011	ppl	Loss Contingency After Tax Loss Accrual Reversal Impact To Other Operation Maintenance LossContingencyAfterTaxLossAccrualReversalImpactToOtherOperationMaintenance	75000000	USD
CY2011	ppl	Loss Contingency After Tax Loss Accrual Reversal Impact To Interest Expense LossContingencyAfterTaxLossAccrualReversalImpactToInterestExpense	14000000	USD
CY2011	ppl	Loss Contingency Period To Respond LossContingencyPeriodToRespond	30	pure
CY2011	ppl	Number Distribution Operators Uk NumberDistributionOperatorsUk	4	pure
CY2011	ppl	Projected Capital Expenditure Cost For Subsidiary ProjectedCapitalExpenditureCostForSubsidiary	3100000000	USD
CY2011Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	14000000	USD
CY2010Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	14000000	USD
CY2011Q4	ppl	Deductible For Bodily Injury And Property Damage DeductibleForBodilyInjuryAndPropertyDamage	4000000	USD
CY2011Q4	ppl	Maximum Aggregate Coverage Bodily Injury And Property Damage MaximumAggregateCoverageBodilyInjuryAndPropertyDamage	200000000	USD
CY2009	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	25000000	USD
CY2009	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	250000000	USD
CY2009	us-gaap	Cash Flow Hedge Gain Loss Reclassified To Earnings Net CashFlowHedgeGainLossReclassifiedToEarningsNet	4000000	USD
CY2011	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	127000000	USD
CY2010	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	39000000	USD
CY2009	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	74000000	USD
CY2010	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	70000000	USD
CY2009	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	27000000	USD
CY2011	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	123000000	USD
CY2011Q4	ppl	Percent Of Wilshire Index Invested In Large Cap Stocks PercentOfWilshireIndexInvestedInLargeCapStocks	0.70	pure
CY2011Q4	ppl	Percent Of Wilshire Index Invested In Mid Small Cap Stocks PercentOfWilshireIndexInvestedInMidSmallCapStocks	0.30	pure
CY2011Q4	ppl	Weighted Average Coupon Of Nuclear Decommissioning Trust Funds Debt Securities WeightedAverageCouponOfNuclearDecommissioningTrustFundsDebtSecurities	0.0440	pure
CY2011Q4	ppl	Weighted Average Of Contractual Maturities Auction Rate Securities WeightedAverageOfContractualMaturitiesAuctionRateSecurities	24	pure
CY2011Q4	ppl	Concentration Risk Credit Risk Fin Instrument Maximum Exposure ConcentrationRiskCreditRiskFinInstrumentMaximumExposure	3000000000	USD
CY2011Q4	ppl	Percentage Exposure To Single Counterparty PercentageExposureToSingleCounterparty	0.11	pure
CY2011Q4	ppl	Percentage Exposure To Next Highest Counterparty PercentageExposureToNextHighestCounterparty	0.06	pure
CY2011Q4	ppl	Number Of Energy Trading Counterparties That Have Been Aggregated NumberOfEnergyTradingCounterpartiesThatHaveBeenAggregated	10	pure
CY2011Q4	ppl	Dollar Exposure To Top Ten Counterparties DollarExposureToTopTenCounterparties	457000000	USD
CY2011Q4	ppl	Percentage Exposure To Top Ten Counterparties PercentageExposureToTopTenCounterparties	0.53	pure
CY2011Q4	ppl	Fair Value Concentration Of Credit Risk After Master Netting Collateral Arrangements FairValueConcentrationOfCreditRiskAfterMasterNettingCollateralArrangements	866000000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	11000000	USD
CY2011Q4	us-gaap	Accounts Receivable Gross AccountsReceivableGross	14000000	USD
CY2009Q2	ppl	Estimated Costs To Sell Impairment Calculation EstimatedCostsToSellImpairmentCalculation	1000000	USD
CY2011Q4	ppl	Weighted Average Maturity For Debt Securities Held By Nuclear Decommissioning Trust Funds WeightedAverageMaturityForDebtSecuritiesHeldByNuclearDecommissioningTrustFunds	8.46	pure
CY2010	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityGainLossIncludedInOtherComprehensiveIncomeLoss	11000000	USD
CY2011	us-gaap	Gain Loss From Hedged Firm Commitment Not Qualifying As Interest Rate Fair Value Hedge Net GainLossFromHedgedFirmCommitmentNotQualifyingAsInterestRateFairValueHedgeNet	14000000	USD
CY2010	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset And Liability Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetAndLiabilityPurchasesSalesIssuancesSettlements	-16000000	USD
CY2010	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset And Liability Transfers In FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetAndLiabilityTransfersIn	-15000000	USD
CY2010	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset And Liability Transfers Out FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetAndLiabilityTransfersOut	47000000	USD
CY2010Q4	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset And Liability Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetAndLiabilityValue	22000000	USD
CY2011	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset And Liability Transfers Out FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetAndLiabilityTransfersOut	74000000	USD
CY2011	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetLiabilitySettlements	20000000	USD
CY2011	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset Liability Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetLiabilitySales	-3000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityGainLossIncludedInOtherComprehensiveIncomeLoss	-12000000	USD
CY2011	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset Liability Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetLiabilityPurchases	1000000	USD
CY2011Q4	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset And Liability Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetAndLiabilityValue	41000000	USD
CY2011	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-65000000	USD
CY2011	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset And Liability Transfers In FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetAndLiabilityTransfersIn	4000000	USD
CY2010	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-137000000	USD
CY2009Q4	ppl	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset And Liability Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetAssetAndLiabilityValue	132000000	USD
CY2011Q4	ppl	Accumulated Other Comprehensive Income Loss Excluding Net Investment Hedges Net Of Tax AccumulatedOtherComprehensiveIncomeLossExcludingNetInvestmentHedgesNetOfTax	527000000	USD
CY2010Q4	ppl	Accumulated Other Comprehensive Income Loss Excluding Net Investment Hedges Net Of Tax AccumulatedOtherComprehensiveIncomeLossExcludingNetInvestmentHedgesNetOfTax	695000000	USD
CY2009Q4	ppl	Accumulated Other Comprehensive Income Loss Excluding Net Investment Hedges Net Of Tax AccumulatedOtherComprehensiveIncomeLossExcludingNetInvestmentHedgesNetOfTax	602000000	USD
CY2011Q4	ppl	Cash Collateral Posted Under Master Netting Arrangements CashCollateralPostedUnderMasterNettingArrangements	29000000	USD
CY2011Q4	ppl	Baseload Generation Fleet Generating Capacity BaseloadGenerationFleetGeneratingCapacity	7252	MW
CY2011Q4	ppl	Intermediate And Peaking Fleet Generating Capacity IntermediateAndPeakingFleetGeneratingCapacity	3256	MW
CY2011	us-gaap	Maximum Length Of Time Hedged In Interest Rate Cash Flow Hedge MaximumLengthOfTimeHedgedInInterestRateCashFlowHedge	2022
CY2011Q4	ppl	Derivative Higher Remaining Maturity Range Specific Subsidiary DerivativeHigherRemainingMaturityRangeSpecificSubsidiary	2021
CY2011Q4	us-gaap	Derivative Higher Remaining Maturity Range DerivativeHigherRemainingMaturityRange	2028
CY2011	ppl	Maximum Length Of Time Hedged In Interest Rate Fair Value Hedge MaximumLengthOfTimeHedgedInInterestRateFairValueHedge	2047
CY2011Q4	us-gaap	Notional Amount Of Interest Rate Fair Value Hedge Derivatives NotionalAmountOfInterestRateFairValueHedgeDerivatives	99000000	USD
CY2011Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	-12000000	USD
CY2011Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	302000000	USD
CY2011Q4	ppl	Derivative Notional Amount For Specific Subsidiary DerivativeNotionalAmountForSpecificSubsidiary	960000000	USD
CY2011Q4	us-gaap	Notional Amount Of Interest Rate Cash Flow Hedge Derivatives NotionalAmountOfInterestRateCashFlowHedgeDerivatives	150000000	USD
CY2011Q4	ppl	Notional Amount Of Interest Rate Swaps Classified Economic Activity NotionalAmountOfInterestRateSwapsClassifiedEconomicActivity	179000000	USD
CY2011	ppl	Maximum Length Of Time Hedged In Interest Rate Economic Activity Hedge MaximumLengthOfTimeHedgedInInterestRateEconomicActivityHedge	2033
CY2011Q4	ppl	Foreign Currency Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months None Or Insignificant ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNoneOrInsignificant	insignificant
CY2011	ppl	Gain Loss On Discontinuation Of Foreign Currency Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Insignificant GainLossOnDiscontinuationOfForeignCurrencyCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringInsignificant	no cash flow hedges were discontinued
CY2011	us-gaap	Ineffectiveness On Foreign Currency Fair Value Hedges Is Immaterial IneffectivenessOnForeignCurrencyFairValueHedgesIsImmaterial	no gains or losses
CY2011	ppl	Gain Loss From Hedged Being Excluded From Assessment Of Effectiveness Foreign Currency Fair Value Hedge Insignificant GainLossFromHedgedBeingExcludedFromAssessmentOfEffectivenessForeignCurrencyFairValueHedgeInsignificant	no gains or losses
CY2011	ppl	Gain Loss From Hedged Firm Commitment Not Qualifying As Foreign Currency Fair Value Hedge Insignificant GainLossFromHedgedFirmCommitmentNotQualifyingAsForeignCurrencyFairValueHedgeInsignificant	no gains or losses
CY2011	ppl	Minimum Settlement Date Net Investment Hedges MinimumSettlementDateNetInvestmentHedges	January 2012
CY2009	ppl	Insignificant Or No Net After Tax Gains Losses On Net Investment Hedges Recognized In Foreign Currency Translation Adjustment Component Of Other Comprehensive Income InsignificantOrNoNetAfterTaxGainsLossesOnNetInvestmentHedgesRecognizedInForeignCurrencyTranslationAdjustmentComponentOfOtherComprehensiveIncome	insignificant
CY2011Q4	us-gaap	Notional Amount Of Derivative Instruments Designated As Net Investment Hedges NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges	92000000	GBP
CY2011Q4	us-gaap	Notional Amount Of Derivative Instruments Designated As Net Investment Hedges NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges	150000000	USD
CY2011	ppl	Maximum Settlement Date Net Investment Hedges MaximumSettlementDateNetInvestmentHedges	September 2012
CY2011Q4	us-gaap	Translation Adjustment For Net Investment Hedge Net Of Tax TranslationAdjustmentForNetInvestmentHedgeNetOfTax	19000000	USD
CY2011Q4	ppl	Total Exposure Hedged Foreign Currency Contracts Classifed As Economic Activity TotalExposureHedgedForeignCurrencyContractsClassifedAsEconomicActivity	288000000	GBP
CY2011	ppl	Minimum Termination Date Net Investment Hedges Classified As Economic Activity MinimumTerminationDateNetInvestmentHedgesClassifiedAsEconomicActivity	January 2012
CY2011	ppl	Maximum Termination Date Net Investment Hedges Classified As Economic Activity MaximumTerminationDateNetInvestmentHedgesClassifiedAsEconomicActivity	November 2012
CY2011	ppl	Gains Losses On Foreign Currency Contracts Classified As Economic Activity For Debt Or Commitments GainsLossesOnForeignCurrencyContractsClassifiedAsEconomicActivityForDebtOrCommitments	55000000	USD
CY2011Q4	us-gaap	Foreign Currency Derivative Instruments Not Designated As Hedging Instruments At Fair Value Net ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAtFairValueNet	11000000	USD
CY2011	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	10000000	USD
CY2011Q4	ppl	Cash Collateral Obligation Under Master Netting Arrangement CashCollateralObligationUnderMasterNettingArrangement	147000000	USD
CY2010Q3	ppl	Proceeds From Sale Of Contract ProceedsFromSaleOfContract	249000000	USD
CY2010Q3	ppl	Fair Value Of Normal Purchase Normal Sale Contracts Recorded Due To Monetization FairValueOfNormalPurchaseNormalSaleContractsRecordedDueToMonetization	160000000	USD
CY2010Q3	ppl	Realized Pretax Gains Losses On Normal Purchase Normal Sale Contracts Recorded Due To Sale Of Contracts RealizedPretaxGainsLossesOnNormalPurchaseNormalSaleContractsRecordedDueToSaleOfContracts	144000000	USD
CY2010Q3	ppl	Portion Of Fair Value Of Normal Purchase Normal Sale Contracts Recorded That Were Not Monetized PortionOfFairValueOfNormalPurchaseNormalSaleContractsRecordedThatWereNotMonetized	16000000	USD
CY2010Q3	us-gaap	Gain Loss On Discontinuation Of Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	-173000000	USD
CY2010Q3	ppl	Unrealized Pretax Gains Losses On Certain Full Requirement Sales Contracts Recorded Due To Monetization Fair Value Component UnrealizedPretaxGainsLossesOnCertainFullRequirementSalesContractsRecordedDueToMonetizationFairValueComponent	-39000000	USD
CY2010Q3	ppl	Pretax Loss Recorded On Monetization Of Certain Full Requirement Sales Contracts PretaxLossRecordedOnMonetizationOfCertainFullRequirementSalesContracts	-68000000	USD
CY2010Q3	ppl	After Tax Loss Recorded On Monetization Of Certain Full Requirement Sales Contracts AfterTaxLossRecordedOnMonetizationOfCertainFullRequirementSalesContracts	-40000000	USD
CY2011	us-gaap	Maximum Length Of Time Hedged In Price Risk Cash Flow Hedge MaximumLengthOfTimeHedgedInPriceRiskCashFlowHedge	2016
CY2011Q4	us-gaap	Price Risk Cash Flow Hedge Unrealized Gain Loss To Be Reclassified During Next12 Months PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months	394000000	USD
CY2010Q4	ppl	Cash Collateral Obligation Under Master Netting Arrangement CashCollateralObligationUnderMasterNettingArrangement	338000000	USD
CY2010Q4	ppl	Cash Collateral Posted Under Master Netting Arrangements CashCollateralPostedUnderMasterNettingArrangements	19000000	USD
CY2011	ppl	Price Risk Cash Flow Hedge Gain Loss Reclassified To Earnings Net Text PriceRiskCashFlowHedgeGainLossReclassifiedToEarningsNetText	insignificant
CY2010	us-gaap	Gain Loss On Discontinuation Of Price Risk Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfPriceRiskCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	-89000000	USD
CY2009	us-gaap	Gain Loss On Discontinuation Of Price Risk Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfPriceRiskCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	9000000	USD
CY2009	ppl	After Tax Gain Loss Recognized Risk Cash Flow Hedge Prior Effectiveness Failures AfterTaxGainLossRecognizedRiskCashFlowHedgePriorEffectivenessFailures	-215000000	USD
CY2011	us-gaap	Gain Loss On Price Risk Cash Flow Hedge Ineffectiveness GainLossOnPriceRiskCashFlowHedgeIneffectiveness	-22000000	USD
CY2010	us-gaap	Gain Loss On Price Risk Cash Flow Hedge Ineffectiveness GainLossOnPriceRiskCashFlowHedgeIneffectiveness	-30000000	USD
CY2010Q1	ppl	After Tax Gain Loss Recognized Risk Cash Flow Hedge Prior Effectiveness Failures AfterTaxGainLossRecognizedRiskCashFlowHedgePriorEffectivenessFailures	-82000000	USD
CY2009	us-gaap	Gain Loss On Price Risk Cash Flow Hedge Ineffectiveness GainLossOnPriceRiskCashFlowHedgeIneffectiveness	41000000	USD
CY2011Q4	ppl	Fair Value Commodity Derivative Contracts Classified Economic Activity FairValueCommodityDerivativeContractsClassifiedEconomicActivity	63000000	USD
CY2010Q4	ppl	Fair Value Commodity Derivative Contracts Classified Economic Activity FairValueCommodityDerivativeContractsClassifiedEconomicActivity	389000000	USD
CY2010	us-gaap	Gain Loss On Discontinuation Of Interest Rate Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfInterestRateCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	-19000000	USD
CY2011Q4	us-gaap	Net Investment Hedge Derivatives At Fair Value Net NetInvestmentHedgeDerivativesAtFairValueNet	7000000	USD
CY2010Q4	us-gaap	Net Investment Hedge Derivatives At Fair Value Net NetInvestmentHedgeDerivativesAtFairValueNet	7000000	USD
CY2009	ppl	Gain Loss On Discontinuation Of Interest Rate Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Insignificant GainLossOnDiscontinuationOfInterestRateCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringInsignificant	insignificant
CY2011	ppl	Insignificant Or No Net After Tax Gains Losses On Net Investment Hedges Recognized In Foreign Currency Translation Adjustment Component Of Other Comprehensive Income InsignificantOrNoNetAfterTaxGainsLossesOnNetInvestmentHedgesRecognizedInForeignCurrencyTranslationAdjustmentComponentOfOtherComprehensiveIncome	insignificant
CY2010	ppl	Insignificant Or No Net After Tax Gains Losses On Net Investment Hedges Recognized In Foreign Currency Translation Adjustment Component Of Other Comprehensive Income InsignificantOrNoNetAfterTaxGainsLossesOnNetInvestmentHedgesRecognizedInForeignCurrencyTranslationAdjustmentComponentOfOtherComprehensiveIncome	insignificant
CY2011	ppl	Gain Loss From Hedged Firm Commitment Not Qualifying As Interest Rate Fair Value Hedge Net Pretax GainLossFromHedgedFirmCommitmentNotQualifyingAsInterestRateFairValueHedgeNetPretax	22000000	USD
CY2011	ppl	Principal Debt Related To Discontinuance Fair Value Hedge PrincipalDebtRelatedToDiscontinuanceFairValueHedge	400000000	USD
CY2011	ppl	Interest Rate Debt Related To Discontinuance Fair Value Hedge InterestRateDebtRelatedToDiscontinuanceFairValueHedge	0.07125	pure
CY2011Q4	ppl	Fair Value Interest Rate Swaps Classifed Economic Activity FairValueInterestRateSwapsClassifedEconomicActivity	60000000	USD
CY2010Q4	ppl	Fair Value Interest Rate Swaps Classifed Economic Activity FairValueInterestRateSwapsClassifedEconomicActivity	34000000	USD
CY2010Q4	us-gaap	Translation Adjustment For Net Investment Hedge Net Of Tax TranslationAdjustmentForNetInvestmentHedgeNetOfTax	15000000	USD
CY2010	us-gaap	Gain Loss On Interest Rate Cash Flow Hedge Ineffectiveness GainLossOnInterestRateCashFlowHedgeIneffectiveness	-9000000	USD
CY2009	us-gaap	Interest Rate Cash Flow Hedge Ineffectiveness Is Immaterial InterestRateCashFlowHedgeIneffectivenessIsImmaterial	insignificant
CY2011	us-gaap	Ineffectiveness On Interest Rate Fair Value Hedges Is Immaterial IneffectivenessOnInterestRateFairValueHedgesIsImmaterial	did not recognize
CY2010	us-gaap	Ineffectiveness On Interest Rate Fair Value Hedges Is Immaterial IneffectivenessOnInterestRateFairValueHedgesIsImmaterial	did not recognize
CY2009	us-gaap	Ineffectiveness On Interest Rate Fair Value Hedges Is Immaterial IneffectivenessOnInterestRateFairValueHedgesIsImmaterial	did not recognize
CY2011	ppl	Gain Loss On Components Excluded From Assessment Of Interest Rate Fair Value Hedge Effectiveness Insignificant GainLossOnComponentsExcludedFromAssessmentOfInterestRateFairValueHedgeEffectivenessInsignificant	did not recognize
CY2010	ppl	Gain Loss On Components Excluded From Assessment Of Interest Rate Fair Value Hedge Effectiveness Insignificant GainLossOnComponentsExcludedFromAssessmentOfInterestRateFairValueHedgeEffectivenessInsignificant	did not recognize
CY2009	ppl	Gain Loss On Components Excluded From Assessment Of Interest Rate Fair Value Hedge Effectiveness Insignificant GainLossOnComponentsExcludedFromAssessmentOfInterestRateFairValueHedgeEffectivenessInsignificant	did not recognize
CY2010	ppl	Gain Loss From Hedged Firm Commitment Not Qualifying As Interest Rate Fair Value Hedge Insignificant GainLossFromHedgedFirmCommitmentNotQualifyingAsInterestRateFairValueHedgeInsignificant	insignificant
CY2009	ppl	Gain Loss From Hedged Firm Commitment Not Qualifying As Interest Rate Fair Value Hedge Insignificant GainLossFromHedgedFirmCommitmentNotQualifyingAsInterestRateFairValueHedgeInsignificant	insignificant
CY2011	ppl	Gain Loss On Discontinuation Of Interest Rate Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Insignificant GainLossOnDiscontinuationOfInterestRateCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringInsignificant	no such reclassifications
CY2009	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-9000000	USD
CY2010	ppl	Insignificant Or No Gains Losses On Foreign Currency Contracts Classified As Economic Activity InsignificantOrNoGainsLossesOnForeignCurrencyContractsClassifiedAsEconomicActivity	insignificant
CY2011	ppl	Maximum Maturity Date Of Economic Activity Instruments MaximumMaturityDateOfEconomicActivityInstruments	2019
CY2011	us-gaap	Gain Loss On Interest Rate Cash Flow Hedge Ineffectiveness GainLossOnInterestRateCashFlowHedgeIneffectiveness	-9000000	USD
CY2011Q2	us-gaap	Gain Loss On Interest Rate Cash Flow Hedge Ineffectiveness GainLossOnInterestRateCashFlowHedgeIneffectiveness	-4000000	USD
CY2011Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	38000000	USD
CY2011Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	183000000	USD
CY2011Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	156000000	USD
CY2011	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2391000000	USD
CY2010	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	996000000	USD
CY2011	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	0	USD
CY2010	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	-5000000	USD
CY2011	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-38000000	USD
CY2010	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-36000000	USD
CY2009Q4	us-gaap	Goodwill Goodwill	806000000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1159000000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	300000000	USD
CY2010Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1132000000	USD
CY2010Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	189000000	USD
CY2011Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	215000000	USD
CY2010Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	93000000	USD
CY2011Q4	ppl	Total Other Intangible Assets Finite Infinite TotalOtherIntangibleAssetsFiniteInfinite	1374000000	USD
CY2010Q4	ppl	Total Other Intangible Assets Finite Infinite TotalOtherIntangibleAssetsFiniteInfinite	1225000000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	640000000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	618000000	USD
CY2010Q3	ppl	Reduction To Asset Retirement Obligation Liability For Nuclear Plant Based On Most Recent Cost Study ReductionToAssetRetirementObligationLiabilityForNuclearPlantBasedOnMostRecentCostStudy	103000000	USD
CY2010Q3	ppl	Reduction To Property Plant Equipment For Nuclear Plant Based On Most Recent Asset Retirement Obligation Cost Study ReductionToPropertyPlantEquipmentForNuclearPlantBasedOnMostRecentAssetRetirementObligationCostStudy	103000000	USD
CY2011	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	-33000000	USD
CY2011	ppl	Obligations Assumed In Acquisition Of Lke ObligationsAssumedInAcquisitionOfLke	0	USD
CY2011	ppl	Obligations Assumed In Acquisition ObligationsAssumedInAcquisition	15000000	USD
CY2011	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	5000000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	18000000	USD
CY2010	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	-32000000	USD
CY2010	ppl	Obligations Assumed In Acquisition Of Lke ObligationsAssumedInAcquisitionOfLke	103000000	USD
CY2010	ppl	Obligations Assumed In Acquisition ObligationsAssumedInAcquisition	0	USD
CY2010	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-100000000	USD
CY2010	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	17000000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	448000000	USD
CY2009Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	426000000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	497000000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	14000000	USD
CY2010	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	4000000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	13000000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	13000000	USD
CY2011Q4	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	292000000	USD
CY2010Q4	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	270000000	USD
CY2011	ppl	Decommissioning Trust Fund DecommissioningTrustFund	0.90	pure
CY2011	ppl	Term In Years Competitive Transition Charge Is Recovered From Customers TermInYearsCompetitiveTransitionChargeIsRecoveredFromCustomers	11	pure
CY2011	ppl	Principal Amount Of Debt Issued By Development Authority On Behalf Of Company PrincipalAmountOfDebtIssuedByDevelopmentAuthorityOnBehalfOfCompany	150000000	USD
CY2009Q2	ppl	Proceeds From Sale Of Development Authority Bonds Held By Investments For Unregulated ProceedsFromSaleOfDevelopmentAuthorityBondsHeldByInvestmentsForUnregulated	150000000	USD
CY2010Q4	ppl	Pollution Control Revenue Bonds Principal Amount PollutionControlRevenueBondsPrincipalAmount	163000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	624000000	USD
CY2010Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	182000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	479000000	USD
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	187000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	2000000	USD
CY2011Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	664000000	USD
CY2010Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	806000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	0	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	14000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	69000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	62000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	82000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	227000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	14000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	72000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	67000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	90000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	243000000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	13000000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	5000000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	27000000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	20000000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	16000000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	28000000	USD
CY2011Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	3120000000	USD
CY2011Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	2910000000	USD
CY2011Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	2489000000	USD
CY2011Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	4218000000	USD
CY2011Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	805000000	USD
CY2011Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	595000000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	767000000	USD
CY2011Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	934000000	USD
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	3000000	USD
CY2011	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;font-weight:bold;margin-left:0px;">24</font><font style="font-family:Arial;font-size:10pt;font-weight:bold;">. </font><font style="font-family:Arial;font-size:10pt;font-weight:bold;"> </font><font style="font-family:Arial;font-size:10pt;font-weight:bold;">New Accounting Guidance Pending Adoption</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:0px;">(</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">PPL</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">, </font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">PPL</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;"> Energy Supply, </font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">PPL</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;"> Electric, LKE, LG&E and KU)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;text-decoration:underline;margin-left:0px;">Fair Value Measurements</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Effective </font><font style="font-family:Times New Roman;font-size:10pt;">January 1, 2012</font><font style="font-family:Times New Roman;font-size:10pt;">, </font><font style="font-family:Times New Roman;font-size:10pt;">the Registrants</font><font style="font-family:Times New Roman;font-size:10pt;"> will prospectively adopt accounting guidance that was issued to clarify existing fair value measurement guidance as well as enhance fair value disclosures. The additional disclosures required by this guidance include quantitative information about significant unobservable inputs used for Level 3 measurements, qualitative information about the sensitivity of recurring Level 3 measurements, information about any transfers between Level 1 and 2 of the fair value hierarchy, information about when the current use of a non-financial asset is different from the highest and best use, and the hierarchy classification for assets and liabilities whose fair value is disclosed only in the notes to the financial statements. </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Any fair value measurement differences resulting from the adoption of this guidance will be recognized in income in the period of adoption. The adoption of this guidance is not expected to have a significant impact on </font><font style="font-family:Times New Roman;font-size:10pt;">the Registrants</font><font style="font-family:Times New Roman;font-size:10pt;">.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;text-decoration:underline;margin-left:0px;">Testing Goodwill for Impairment</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Effective </font><font style="font-family:Times New Roman;font-size:10pt;">January 1, 2012</font><font style="font-family:Times New Roman;font-size:10pt;">, </font><font style="font-family:Times New Roman;font-size:10pt;">the Registrants</font><font style="font-family:Times New Roman;font-size:10pt;"> will prospectively adopt accounting guidance which will allow an entity to elect the option to first make a qualitative evaluation about the likelihood of an impairment of goodwill. If, based on this assessment, the entity determines it is not more likely than not the fair value of a reporting unit is less than the carrying amount, the two-step goodwill impairment test is not necessary. However, the first step of the impairment test is required if an entity concludes it is more likely than not the fair value of a reporting unit is less than the carrying amount based on the qualitative assessment.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">The adoption of this standard is not expected to have a significant impact on </font><font style="font-family:Times New Roman;font-size:10pt;">the Registrants</font><font style="font-family:Times New Roman;font-size:10pt;">.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;text-decoration:underline;margin-left:0px;">Improving Disclosures about Offsetting Balance Sheet Items</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Effective </font><font style="font-family:Times New Roman;font-size:10pt;">January 1, 2013</font><font style="font-family:Times New Roman;font-size:10pt;">, </font><font style="font-family:Times New Roman;font-size:10pt;">the Registrants</font><font style="font-family:Times New Roman;font-size:10pt;"> will retrospectively adopt accounting guidance issued to enhance disclosures about financial instruments and derivative instruments that either (1) offset </font><font style="font-family:Times New Roman;font-size:10pt;">on the balance sheet </font><font style="font-family:Times New Roman;font-size:10pt;">or (2) are subject to an enforceable master netting arrangement or similar agreement, irrespective of whether they are offset </font><font style="font-family:Times New Roman;font-size:10pt;">on the balance sheet</font><font style="font-family:Times New Roman;font-size:10pt;">.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Upon adoption, the </font><font style="font-family:Times New Roman;font-size:10pt;">enhanced disclosure</font><font style="font-family:Times New Roman;font-size:10pt;"> requirements</font><font style="font-family:Times New Roman;font-size:10pt;"> are</font><font style="font-family:Times New Roman;font-size:10pt;"> not expected to have a significant impact on </font><font style="font-family:Times New Roman;font-size:10pt;">the Registrants</font><font style="font-family:Times New Roman;font-size:10pt;">. </font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p>
CY2010Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.66
CY2010Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.66
CY2010Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.64
CY2010Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.64
CY2010Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.350
CY2010Q1	ppl	Lowest Price Per Share Of Stock Sold During Quarter LowestPricePerShareOfStockSoldDuringQuarter	27.47
CY2010Q1	ppl	Highest Price Per Share Of Stock Sold During Quarter HighestPricePerShareOfStockSoldDuringQuarter	32.77
CY2010Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.350
CY2010Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2010Q2	ppl	Lowest Price Per Share Of Stock Sold During Quarter LowestPricePerShareOfStockSoldDuringQuarter	23.75
CY2010Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2010Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.20
CY2010Q2	ppl	Highest Price Per Share Of Stock Sold During Quarter HighestPricePerShareOfStockSoldDuringQuarter	28.80
CY2010Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.20
CY2010Q3	ppl	Highest Price Per Share Of Stock Sold During Quarter HighestPricePerShareOfStockSoldDuringQuarter	28.00
CY2010Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.350
CY2010Q3	ppl	Lowest Price Per Share Of Stock Sold During Quarter LowestPricePerShareOfStockSoldDuringQuarter	24.83
CY2010Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.62
CY2010Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.62
CY2010Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2010Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2010Q4	ppl	Highest Price Per Share Of Stock Sold During Quarter HighestPricePerShareOfStockSoldDuringQuarter	28.14
CY2010Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.69
CY2010Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.73
CY2010Q4	ppl	Lowest Price Per Share Of Stock Sold During Quarter LowestPricePerShareOfStockSoldDuringQuarter	25.13
CY2010Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.350
CY2010Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.69
CY2010Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.73
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	401000000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	196000000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	444000000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	454000000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.82
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.76
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.35
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.78
CY2010Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	85000000	USD
CY2010Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	306000000	USD
CY2010Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	338000000	USD
CY2010Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	8000000	USD
CY2010Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	7000000	USD
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-1000000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.76
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.82
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.35
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.78
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.78
CY2010Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-53000000	USD
CY2010Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	21000000	USD
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2011Q1	us-gaap	Profit Loss ProfitLoss	405000000	USD
CY2011Q2	us-gaap	Profit Loss ProfitLoss	200000000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	449000000	USD
CY2011Q4	us-gaap	Profit Loss ProfitLoss	458000000	USD
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.76
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.35
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.82
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.82
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.35
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.76
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.78
CY2011Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.350
CY2011Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.350
CY2011Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.350
CY2011Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.350
CY2010Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	3006000000	USD
CY2010Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	1473000000	USD
CY2010Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	2179000000	USD
CY2010Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	1863000000	USD
CY2010Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	247000000	USD
CY2010Q1	us-gaap	Profit Loss ProfitLoss	255000000	USD
CY2010Q2	us-gaap	Profit Loss ProfitLoss	92000000	USD
CY2010Q3	us-gaap	Profit Loss ProfitLoss	253000000	USD
CY2010Q4	us-gaap	Profit Loss ProfitLoss	359000000	USD
CY2010Q1	us-gaap	Net Income Loss NetIncomeLoss	250000000	USD
CY2010Q2	us-gaap	Net Income Loss NetIncomeLoss	85000000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	402000000	USD
CY2010Q3	us-gaap	Net Income Loss NetIncomeLoss	248000000	USD
CY2011Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	201000000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	449000000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	458000000	USD
CY2010Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	476000000	USD
CY2010Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	226000000	USD
CY2010Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	522000000	USD
CY2010Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	642000000	USD
CY2011Q1	ppl	Highest Price Per Share Of Stock Sold During Quarter HighestPricePerShareOfStockSoldDuringQuarter	26.98
CY2011Q2	ppl	Highest Price Per Share Of Stock Sold During Quarter HighestPricePerShareOfStockSoldDuringQuarter	28.38
CY2011Q3	ppl	Highest Price Per Share Of Stock Sold During Quarter HighestPricePerShareOfStockSoldDuringQuarter	29.61
CY2011Q4	ppl	Highest Price Per Share Of Stock Sold During Quarter HighestPricePerShareOfStockSoldDuringQuarter	30.27
CY2011Q1	ppl	Lowest Price Per Share Of Stock Sold During Quarter LowestPricePerShareOfStockSoldDuringQuarter	24.10
CY2011Q2	ppl	Lowest Price Per Share Of Stock Sold During Quarter LowestPricePerShareOfStockSoldDuringQuarter	25.23
CY2011Q3	ppl	Lowest Price Per Share Of Stock Sold During Quarter LowestPricePerShareOfStockSoldDuringQuarter	25.00
CY2011Q4	ppl	Lowest Price Per Share Of Stock Sold During Quarter LowestPricePerShareOfStockSoldDuringQuarter	27.00

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$PPL
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2010 Q4 Form 10-K Financial Statement

#000092222412000023 Filed on February 28, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PPL PPL Corp Stock $ppl

2010 Q4 Form 10-K Financial Statement

#000092222412000023 Filed on February 28, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PPL
PPL Corp Stock $ppl