$ES
EVERSOURCE ENERGY Stock $es

$es Overview Financials Valuation SEC Filings Company Website

2012 Q1 Form 10-Q Financial Statement

#000007274112000044 Filed on May 10, 2012

Income Statement

Concept	2012 Q1	2011 Q1
Revenue	$1.100B	$1.235B
YoY Change	-10.99%	-7.77%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$104.6M	$125.6M
YoY Change	-16.72%	59.59%
% of Gross Profit
Operating Expenses	$885.2M	$1.008B
YoY Change	-12.17%	-9.43%
Operating Profit	$214.4M	$227.4M
YoY Change	-5.72%	0.31%
Interest Expense	$66.45M	$58.55M
YoY Change	13.49%	-192.49%
% of Operating Profit	30.99%	25.75%
Other Income/Expense, Net	$8.773M	$10.31M
YoY Change	-14.93%	151.54%
Pretax Income	$156.7M	$179.1M
YoY Change	-12.51%	6.94%
Income Tax	$55.96M	$63.54M
% Of Pretax Income	35.71%	35.47%
Net Earnings	$100.8M	$115.6M
YoY Change	-12.8%	31.96%
Net Earnings / Revenue	9.17%	9.36%
Basic Earnings Per Share
Diluted Earnings Per Share	$565.0K	$651.3K
COMMON SHARES
Basic Shares Outstanding	178.1M shares	177.2M shares
Diluted Shares Outstanding	178.4M shares	177.5M shares

Balance Sheet

Concept	2012 Q1	2011 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$346.0M	$95.00M
YoY Change	264.21%	-15.18%
Cash & Equivalents	$283.0M	$15.00M
Short-Term Investments	$63.00M	$79.00M
Other Short-Term Assets	$94.74M	$483.0M
YoY Change	-80.39%	45.92%
Inventory	$219.0M	$203.0M
Prepaid Expenses
Receivables	$485.8M	$540.0M
Other Receivables	$0.00	$87.00M
Total Short-Term Assets	$1.523B	$1.407B
YoY Change	8.28%	13.1%
LONG-TERM ASSETS
Property, Plant & Equipment	$10.61B	$9.716B
YoY Change	9.23%	8.46%
Goodwill	$287.6M
YoY Change
Intangibles
YoY Change
Long-Term Investments	$74.00M	$53.00M
YoY Change	39.62%	26.19%
Other Assets	$171.6M	$2.955B
YoY Change	-94.19%	-17.34%
Total Long-Term Assets	$3.842B	$13.01B
YoY Change	-70.47%	1.17%
TOTAL ASSETS
Total Short-Term Assets	$1.523B	$1.407B
Total Long-Term Assets	$3.842B	$13.01B
Total Assets	$15.98B	$14.42B
YoY Change	10.82%	2.22%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$412.9M	$429.0M
YoY Change	-3.76%	11.43%
Accrued Expenses		$77.00M
YoY Change		-17.2%
Deferred Revenue
YoY Change
Short-Term Debt	$660.0M	$189.0M
YoY Change	249.21%	89.0%
Long-Term Debt Due	$267.3M	$66.00M
YoY Change	304.98%	0.0%
Total Short-Term Liabilities	$1.968B	$1.207B
YoY Change	63.02%	31.34%
LONG-TERM LIABILITIES
Long-Term Debt	$4.977B	$4.795B
YoY Change	3.8%	-3.42%
Other Long-Term Liabilities	$414.0M	$2.704B
YoY Change	-84.69%	-10.11%
Total Long-Term Liabilities	$4.751B	$7.499B
YoY Change	-36.64%	-5.95%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.968B	$1.207B
Total Long-Term Liabilities	$4.751B	$7.499B
Total Liabilities	$6.719B	$10.42B
YoY Change	-35.5%	0.51%
SHAREHOLDERS EQUITY
Retained Earnings	$1.699B
YoY Change
Common Stock	$981.6M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	-$344.8M
YoY Change
Treasury Stock Shares	18.79M shares
Shareholders Equity	$4.068B	$4.002B
YoY Change
Total Liabilities & Shareholders Equity	$15.98B	$14.42B
YoY Change	10.81%	2.23%

Cashflow Statement

Concept	2012 Q1	2011 Q1
OPERATING ACTIVITIES
Net Income	$100.8M	$115.6M
YoY Change	-12.8%	31.96%
Depreciation, Depletion And Amortization	$104.6M	$125.6M
YoY Change	-16.72%	59.59%
Cash From Operating Activities	$8.816M	$372.8M
YoY Change	-97.63%	65.16%
INVESTING ACTIVITIES
Capital Expenditures	$304.3M	$236.7M
YoY Change	28.56%	-216.88%
Acquisitions
YoY Change
Other Investing Activities	-$2.448M	-$328.0K
YoY Change	646.34%	-67.2%
Cash From Investing Activities	-$302.5M	-$236.9M
YoY Change	27.65%	16.43%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$570.5M	-$143.9M
YoY Change	-496.56%	649.26%
NET CHANGE
Cash From Operating Activities	$8.816M	$372.8M
Cash From Investing Activities	-$302.5M	-$236.9M
Cash From Financing Activities	$570.5M	-$143.9M
Net Change In Cash	$276.8M	-$8.036M
YoY Change	-3544.75%	-367.87%
FREE CASH FLOW
Cash From Operating Activities	$8.816M	$372.8M
Capital Expenditures	$304.3M	$236.7M
Free Cash Flow	-$295.5M	$136.1M
YoY Change	-317.14%	-68.22%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q1	us-gaap	Cash Cash	283379000	USD
CY2012Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	485770000	USD
CY2012Q1	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	135887000	USD
CY2011Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	300000	USD
CY2011	nu	Environmental Site Quantity EnvironmentalSiteQuantity	59	pure
CY2012Q1	us-gaap	Energy Related Inventory EnergyRelatedInventory	219091000	USD
CY2011Q4	us-gaap	Energy Related Inventory EnergyRelatedInventory	248958000	USD
CY2011Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	70970000	USD
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	112632000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	1357472000	USD
CY2012Q1	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3214208000	USD
CY2011Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3267710000	USD
CY2012Q1	us-gaap	Goodwill Goodwill	287591000	USD
CY2012Q1	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	62700000	USD
CY2012Q1	us-gaap	Other Assets Current OtherAssetsCurrent	94737000	USD
CY2012Q1	us-gaap	Assets Current AssetsCurrent	1523466000	USD
CY2011Q4	us-gaap	Cash Cash	6559000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	488002000	USD
CY2011Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	175207000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	287591000	USD
CY2012Q1	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	74050000	USD
CY2011Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	60311000	USD
CY2012Q1	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	94258000	USD
CY2011Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	98357000	USD
CY2012Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	171582000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	172560000	USD
CY2012Q1	us-gaap	Assets Noncurrent AssetsNoncurrent	3841689000	USD
CY2011Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	3886529000	USD
CY2012Q1	us-gaap	Assets Assets	15978354000	USD
CY2011Q4	us-gaap	Assets Assets	15647066000	USD
CY2012Q1	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	241902000	USD
CY2011Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	255144000	USD
CY2012Q1	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	10613199000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	10403065000	USD
CY2012Q1	us-gaap	Notes Payable To Bank Current NotesPayableToBankCurrent	660000000	USD
CY2011Q4	us-gaap	Notes Payable To Bank Current NotesPayableToBankCurrent	317000000	USD
CY2012Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	267286000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	331582000	USD
CY2012Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	412884000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	633282000	USD
CY2012Q1	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	108253000	USD
CY2011Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	107558000	USD
CY2012Q1	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	369503000	USD
CY2011Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	390416000	USD
CY2012Q1	us-gaap	Liabilities Current LiabilitiesCurrent	1967681000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1947682000	USD
CY2012Q1	us-gaap	Secured Long Term Debt SecuredLongTermDebt	94357000	USD
CY2011Q4	us-gaap	Secured Long Term Debt SecuredLongTermDebt	112260000	USD
CY2012Q1	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	1923266000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	1868316000	USD
CY2012Q1	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	248314000	USD
CY2011Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	266145000	USD
CY2012Q1	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	924308000	USD
CY2011Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	959876000	USD
CY2012Q1	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	1241433000	USD
CY2012Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	414004000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	420011000	USD
CY2012Q1	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	4751325000	USD
CY2011Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	4840385000	USD
CY2012Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4977131000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4614913000	USD
CY2012Q1	us-gaap	Temporary Equity Carrying Amount TemporaryEquityCarryingAmount	116200000	USD
CY2011Q4	us-gaap	Temporary Equity Carrying Amount TemporaryEquityCarryingAmount	116200000	USD
CY2012Q1	us-gaap	Common Stock Value CommonStockValue	981592000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	980264000	USD
CY2012Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1801752000	USD
CY2011Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1797884000	USD
CY2012Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1698553000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1651875000	USD
CY2012Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	68822000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	70686000	USD
CY2012Q1	us-gaap	Treasury Stock Value TreasuryStockValue	-344774000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	-346667000	USD
CY2012Q1	us-gaap	Stockholders Equity StockholdersEquity	4068301000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	4012670000	USD
CY2012Q1	us-gaap	Minority Interest MinorityInterest	3359000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	2956000	USD
CY2012Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4071660000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4015626000	USD
CY2012Q1	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	9164991000	USD
CY2011Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	8746739000	USD
CY2012Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	15978354000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	15647066000	USD
CY2012Q1	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	149755000	USD
CY2011Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	167844000	USD
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	1326037000	USD
CY2012Q1	us-gaap	Revenues Revenues	1099623000	USD
CY2011Q1	us-gaap	Revenues Revenues	1235251000	USD
CY2012Q1	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	398013000	USD
CY2011Q1	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	474109000	USD
CY2012Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	225958000	USD
CY2011Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	251978000	USD
CY2012Q1	us-gaap	Maintenance Costs MaintenanceCosts	69826000	USD
CY2011Q1	us-gaap	Maintenance Costs MaintenanceCosts	67764000	USD
CY2012Q1	us-gaap	Depreciation Depreciation	80839000	USD
CY2011Q1	us-gaap	Depreciation Depreciation	73951000	USD
CY2012Q1	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	6209000	USD
CY2011Q1	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	34407000	USD
CY2012Q1	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	18347000	USD
CY2011Q1	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	17282000	USD
CY2012Q1	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	86038000	USD
CY2011Q1	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	88403000	USD
CY2012Q1	us-gaap	Operating Expenses OperatingExpenses	885230000	USD
CY2011Q1	us-gaap	Operating Expenses OperatingExpenses	1007894000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	214393000	USD
CY2011Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	227357000	USD
CY2012Q1	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	59968000	USD
CY2011Q1	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	57399000	USD
CY2012Q1	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	1431000	USD
CY2011Q1	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	2578000	USD
CY2012Q1	us-gaap	Interest Expense Other InterestExpenseOther	5048000	USD
CY2011Q1	us-gaap	Interest Expense Other InterestExpenseOther	-1428000	USD
CY2012Q1	us-gaap	Interest Expense InterestExpense	66447000	USD
CY2011Q1	us-gaap	Interest Expense InterestExpense	58549000	USD
CY2012Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	8773000	USD
CY2011Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	10313000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	156719000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	179121000	USD
CY2012Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	55964000	USD
CY2011Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	63537000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	100755000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	115584000	USD
CY2012Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1493000	USD
CY2011Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1429000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	99262000	USD
CY2011Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	114155000	USD
CY2012Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	178437453	shares
CY2011Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	177480996	shares
CY2012Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	178055716	shares
CY2011Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	177188207	shares
CY2012Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.29
CY2011Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.28
CY2012Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	423000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	1173000	USD
CY2012Q1	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	34000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	-5000	USD
CY2012Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	1407000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	935000	USD
CY2012Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	1864000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	2103000	USD
CY2012Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1493000	USD
CY2011Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1429000	USD
CY2012Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	101126000	USD
CY2011Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	116258000	USD
CY2012Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3657000	USD
CY2012Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	52474000	USD
CY2012Q1	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	42268000	USD
CY2012Q1	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	28352000	USD
CY2012Q1	us-gaap	Increase Decrease In Fair Value Of Unhedged Derivative Instruments IncreaseDecreaseInFairValueOfUnhedgedDerivativeInstruments	1770000	USD
CY2012Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-7371000	USD
CY2012Q1	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-29276000	USD
CY2012Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-30108000	USD
CY2012Q1	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-11758000	USD
CY2012Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-190232000	USD
CY2012Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	40240000	USD
CY2012Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	8816000	USD
CY2012Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	304294000	USD
CY2012Q1	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	40947000	USD
CY2012Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	41570000	USD
CY2012Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2448000	USD
CY2012Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-302469000	USD
CY2012Q1	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	17903000	USD
CY2012Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1130000	USD
CY2012Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	570473000	USD
CY2012Q1	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	276820000	USD
CY2011Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4947000	USD
CY2011Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	52429000	USD
CY2011Q1	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	34163000	USD
CY2011Q1	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-44420000	USD
CY2011Q1	us-gaap	Increase Decrease In Fair Value Of Unhedged Derivative Instruments IncreaseDecreaseInFairValueOfUnhedgedDerivativeInstruments	3651000	USD
CY2011Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1776000	USD
CY2011Q1	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-8199000	USD
CY2011Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-42990000	USD
CY2011Q1	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-18312000	USD
CY2011Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-29278000	USD
CY2011Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	33281000	USD
CY2011Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	372766000	USD
CY2011Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	236689000	USD
CY2011Q1	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	38646000	USD
CY2011Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	39230000	USD
CY2011Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-328000	USD
CY2011Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-236945000	USD
CY2011Q1	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	16868000	USD
CY2011Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	989000	USD
CY2011Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-143857000	USD
CY2011Q1	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-8036000	USD
CY2010Q4	us-gaap	Cash Cash	23395000	USD
CY2012Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	52104000	USD
CY2012Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	1390000	USD
CY2012Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	343000000	USD
CY2012Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	300000000	USD
CY2011Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	48588000	USD
CY2011Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	1390000	USD
CY2011Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-78000000	USD
CY2011Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2011Q1	us-gaap	Cash Cash	15359000	USD
CY2012Q1	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	-98910000	USD
CY2011Q1	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	-5932000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	34900000	USD
CY2012Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	34800000	USD
CY2012Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	18300000	USD
CY2011Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	17900000	USD
CY2012Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	-1400000	USD
CY2012Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	2800000	USD
CY2012Q1	nu	Public Utilities Allowance For Funds Used During Construction Capitalized Total PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedTotal	4200000	USD
CY2011Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	-3200000	USD
CY2011Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	5500000	USD
CY2011Q1	nu	Public Utilities Allowance For Funds Used During Construction Capitalized Total PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedTotal	8700000	USD
CY2012Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.066	pure
CY2011Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.071	pure
CY2012Q2	nu	Business Aquisition Purchase Price Allocation Preferred Stock BusinessAquisitionPurchasePriceAllocationPreferredStock	39000000	USD
CY2012Q1	us-gaap	Excise And Sales Taxes ExciseAndSalesTaxes	35000000	USD
CY2011Q1	us-gaap	Excise And Sales Taxes ExciseAndSalesTaxes	38700000	USD
CY2011Q1	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	8300000	USD
CY2012Q1	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	308400000	USD
CY2012Q1	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	12936000000	USD
CY2012Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	138500000	USD
CY2011	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	168500000	USD
CY2012Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	314000000	shares
CY2012Q2	nu	Number Of Nstar Shares Outstanding NumberOfNstarSharesOutstanding	103696000	shares
CY2012Q2	nu	Exchange Ratio ExchangeRatio	1.312	pure
CY2012Q2	us-gaap	Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued	136049000	shares
CY2012Q2	us-gaap	Business Acquisition Cost Of Acquired Entity Purchase Price BusinessAcquisitionCostOfAcquiredEntityPurchasePrice	5038000000	USD
CY2012Q2	us-gaap	Business Acquisition Cost Of Acquired Entity Equity Interests Issued And Issuable BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuable	5005000000	USD
CY2012Q2	nu	Business Acquisition Share Price BusinessAcquisitionSharePrice	36.79
CY2012Q2	us-gaap	Business Acquisition Cost Of Acquired Entity Other Noncash Consideration BusinessAcquisitionCostOfAcquiredEntityOtherNoncashConsideration	33000000	USD
CY2012Q2	us-gaap	Business Acquisition Percentage Of Voting Interests Acquired BusinessAcquisitionPercentageOfVotingInterestsAcquired	1.00	pure
CY2012Q2	nu	Business Acquisition Number Of Shares Awards Vested Immediately Prior To Merger BusinessAcquisitionNumberOfSharesAwardsVestedImmediatelyPriorToMerger	109000	shares
CY2012Q2	us-gaap	Business Acquisition Purchase Price Allocation Current Assets BusinessAcquisitionPurchasePriceAllocationCurrentAssets	746000000	USD
CY2012Q2	us-gaap	Business Acquisition Purchase Price Allocation Property Plant And Equipment BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipment	5150000000	USD
CY2012Q2	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Amount BusinessAcquisitionPurchasePriceAllocationGoodwillAmount	3231000000	USD
CY2012Q2	us-gaap	Business Acquisition Purchase Price Allocation Current Liabilities BusinessAcquisitionPurchasePriceAllocationCurrentLiabilities	1320000000	USD
CY2012Q2	us-gaap	Business Acquisition Purchase Price Allocation Noncurrent Liabilities Long Term Debt BusinessAcquisitionPurchasePriceAllocationNoncurrentLiabilitiesLongTermDebt	2140000000	USD
CY2012Q2	us-gaap	Business Acquisition Purchase Price Allocation Other Noncurrent Liabilities BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentLiabilities	2721000000	USD
CY2012Q2	us-gaap	Business Acquisition Purchase Price Allocation Other Noncurrent Assets BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentAssets	2131000000	USD
CY2012Q1	nu	Business Aquisition Description Of Settlement Agreements BusinessAquisitionDescriptionOfSettlementAgreements	Regulatory Approvals: On February 15, 2012, NU and NSTAR reached comprehensive settlement agreements with the Massachusetts Attorney General and the DOER. The settlement agreement reached with the Attorney General covered a variety of rate-making and rate design issues, including a base distribution rate freeze at least through 2015 for NSTAR Electric, NSTAR Gas and WMECO and $15 million, $3 million and $3 million in the form of rate credits to their respective customers. The settlement agreement reached with the DOER covered the same rate-making and rate design issues as the Attorney General's settlement agreement, as well as a variety of matters impacting the advancement of Massachusetts clean energy policy established by the Green Communities Act and Global Warming Solutions Act. On April 4, 2012, the DPU issued a decision approving the settlement agreements and the merger of NU and NSTAR. On March 13, 2012, NU and NSTAR reached a comprehensive settlement agreement with both the Connecticut Attorney General and the Connecticut Office of Consumer Counsel. The settlement agreement covered a variety of matters, including a $25 million rate credit to CL&P customers, a CL&P base distribution rate freeze until December 1, 2014, and the establishment of a $15 million fund for energy efficiency and other initiatives to be disbursed at the direction of the DEEP. In the agreement, CL&P agreed to forego recovery of $40 million of the deferred storm costs associated with restoration activities following Tropical Storm Irene and the October 2011 snowstorm. Subject to the PURA review, the remaining storm costs are to be recovered during the six-year period beginning December 1, 2014. On April 2, 2012, the PURA issued a decision approving the settlement agreement and the merger of NU and NSTAR. The financial impacts of the settlement agreements will be recognized by NU, CL&P, NSTAR Electric, NSTAR Gas, and WMECO in the second quarter of 2012 in connection with the completion of the merger. As part of the settlement agreement NU and NSTAR reached with both the Connecticut Attorney General and the Connecticut Office of Consumer Counsel on March 13, 2012, in the second quarter of 2012, CL&P will record a reserve of $40 million associated with the deferred storm costs related to Tropical Storm Irene and the October 2011 snowstorm. CL&P will file with PURA for recovery of the total deferred storm costs. The total approved costs, which will reflect the $40 million reserve, will be collected over a six year period beginning December 1, 2014. Management believes CL&P's, PSNH's and WMECO's response to the 2011 storms was prudent and therefore believes it is probable that they will be allowed to recover these remaining deferred storm costs. See Note 2, “Merger of NU and NSTAR,” to the unaudited condensed consolidated financial statements for further information.
CY2012Q1	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	1100000	USD
CY2012Q1	us-gaap	Business Acquisition Pro Forma Information Description BusinessAcquisitionProFormaInformationDescription	Pro Forma Financial Information: The following unaudited pro forma financial information reflects the consolidated results of operations of NU and reflects the amortization of purchase price adjustments assuming the merger had taken place on January 1, 2011. The unaudited pro forma financial information has been presented for illustrative purposes only and is not necessarily indicative of the consolidated results of operations that would have been achieved or the future consolidated results of operations of NU. The pro forma financial information does not include potential cost savings or non-recurring adjustments that will be recorded in the second quarter in connection with the merger. This information is preliminary in nature and subject to change based on final purchase price adjustments. In the first quarters of 2012 and 2011, NU and NSTAR incurred non-recurring costs directly related to the merger that are not included in the pro forma earnings presented below. The aggregate after-tax impacts of these costs were approximately $1.5 million ($1.1 million for NU) and $13 million ($8.3 million for NU) for the three months ended March 31, 2012 and 2011, respectively.
CY2012Q1	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1830000000	USD
CY2011Q1	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	2072000000	USD
CY2011Q1	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	185000000	USD
CY2012Q1	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	108000000	USD
CY2012Q1	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	0.34
CY2012Q1	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	0.34
CY2011Q1	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	0.59
CY2011Q1	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	0.59
CY2012Q1	us-gaap	Regulatory Assets RegulatoryAssets	3456100000	USD
CY2011Q4	us-gaap	Regulatory Assets RegulatoryAssets	3522800000	USD
CY2012Q1	us-gaap	Description Of Regulatory Costs Not Yet Approved DescriptionOfRegulatoryCostsNotYetApproved	Additionally, the Regulated companies had $32.6 million ($4.2 million for CL&P, $23.5 million for PSNH, and $1.6 million for WMECO) and $32.4 million ($5 million for CL&P, $22.4 million for PSNH, and $1.6 million for WMECO) of regulatory costs as of March 31, 2012 and December 31, 2011, respectively, which were included in Other Long-Term Assets on the accompanying unaudited condensed consolidated balance sheets. These amounts represent incurred costs that have not yet been approved for recovery by the applicable regulatory agency. Management believes these costs are probable of recovery in future cost-of-service regulated rates.
CY2012Q1	us-gaap	Regulatory Liabilities RegulatoryLiabilities	398100000	USD
CY2011Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	433900000	USD
CY2012Q1	us-gaap	Public Utilities Property Plant And Equipment Distribution PublicUtilitiesPropertyPlantAndEquipmentDistribution	6645000000	USD
CY2012Q1	nu	Public Utilities Property Plant And Equipment Distribution Natural Gas PublicUtilitiesPropertyPlantAndEquipmentDistributionNaturalGas	1259900000	USD
CY2012Q1	us-gaap	Public Utilities Property Plant And Equipment Transmission PublicUtilitiesPropertyPlantAndEquipmentTransmission	3590700000	USD
CY2012Q1	us-gaap	Public Utilities Property Plant And Equipment Generation Or Processing PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing	1132000000	USD
CY2012Q1	nu	Public Utilities Property Plant And Equipment Electric And Natural Gas Utility Total PublicUtilitiesPropertyPlantAndEquipmentElectricAndNaturalGasUtilityTotal	12627600000	USD
CY2012Q1	nu	Electric And Natural Gas Utility Accumulated Depreciation ElectricAndNaturalGasUtilityAccumulatedDepreciation	3077500000	USD
CY2012Q1	nu	Other Accumulated Depreciation OtherAccumulatedDepreciation	122500000	USD
CY2012Q1	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	3200000000	USD
CY2012Q1	nu	Property Plant And Equipment Net Excluding Construction Work In Progress PropertyPlantAndEquipmentNetExcludingConstructionWorkInProgress	9736000000	USD
CY2012Q1	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	877200000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Distribution PublicUtilitiesPropertyPlantAndEquipmentDistribution	6540400000	USD
CY2011Q4	nu	Public Utilities Property Plant And Equipment Distribution Natural Gas PublicUtilitiesPropertyPlantAndEquipmentDistributionNaturalGas	1247600000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Transmission PublicUtilitiesPropertyPlantAndEquipmentTransmission	3541900000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Generation Or Processing PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing	1096000000	USD
CY2011Q4	nu	Public Utilities Property Plant And Equipment Electric And Natural Gas Utility Total PublicUtilitiesPropertyPlantAndEquipmentElectricAndNaturalGasUtilityTotal	12425900000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	305100000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	12731000000	USD
CY2011Q4	nu	Electric And Natural Gas Utility Accumulated Depreciation ElectricAndNaturalGasUtilityAccumulatedDepreciation	3035500000	USD
CY2011Q4	nu	Other Accumulated Depreciation OtherAccumulatedDepreciation	120200000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	3155700000	USD
CY2011Q4	nu	Property Plant And Equipment Net Excluding Construction Work In Progress PropertyPlantAndEquipmentNetExcludingConstructionWorkInProgress	9575300000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	827800000	USD
CY2012Q1	nu	Current Derivative Assets Consolidated CurrentDerivativeAssetsConsolidated	12900000	USD
CY2011Q4	nu	Current Derivative Assets Consolidated CurrentDerivativeAssetsConsolidated	13300000	USD
CY2012Q1	us-gaap	Description Of Derivative Activity Volume DescriptionOfDerivativeActivityVolume	As of March 31, 2012 and December 31, 2011, NU had approximately 38 thousand MWh and 123 thousand MWh, respectively, of supply volumes remaining in its unregulated wholesale portfolio when expected sales are compared with supply contracts
CY2012Q1	us-gaap	Notional Amount Of Fair Value Hedge Instruments NotionalAmountOfFairValueHedgeInstruments	263000000	USD
CY2012Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	901500000	USD
CY2011Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	962200000	USD
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	840200000	USD
CY2011Q1	nu	Interest Realized In Earnings On Fair Value Hedge InterestRealizedInEarningsOnFairValueHedge	2700000	USD
CY2012Q1	nu	Interest Realized In Earnings On Fair Value Hedge InterestRealizedInEarningsOnFairValueHedge	2500000	USD
CY2012Q1	us-gaap	Increase Decrease In Fair Value Of Interest Rate Fair Value Hedging Instruments IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments	0	USD
CY2012Q1	us-gaap	Increase Decrease In Fair Value Of Hedged Item In Interest Rate Fair Value Hedge IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge	0	USD
CY2011Q1	us-gaap	Increase Decrease In Fair Value Of Hedged Item In Interest Rate Fair Value Hedge IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge	-400000	USD
CY2011Q1	us-gaap	Increase Decrease In Fair Value Of Interest Rate Fair Value Hedging Instruments IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments	400000	USD
CY2012Q1	us-gaap	Cash Flow Hedge Gain Loss Reclassified To Interest Expense Net CashFlowHedgeGainLossReclassifiedToInterestExpenseNet	-700000	USD
CY2011Q1	us-gaap	Cash Flow Hedge Gain Loss Reclassified To Interest Expense Net CashFlowHedgeGainLossReclassifiedToInterestExpenseNet	-100000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPeriodIncreaseDecrease	1900000	USD
CY2012Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1200000	USD
CY2012Q1	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-3000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-4200000	USD
CY2012Q1	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	7500000	USD
CY2012Q1	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	17400000	USD
CY2012Q1	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	25100000	USD
CY2011Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	23500000	USD
CY2011Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	-4100000	USD
CY2011Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	-19900000	USD
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	2000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	-200000	USD
CY2012Q1	nu	Fairvalueinputsliabilitiesquantitativeinformationtabletextblock Fairvalueinputsliabilitiesquantitativeinformationtabletextblock	<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:142px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Range</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:96px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Period Covered</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="TEXT-DECORATION: underline;FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">Energy Prices:</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:142px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:96px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> NU</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$43 - $82 per MWh</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">2017 - 2027</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> CL&P</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$49 - $55 per MWh</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">2017 - 2020</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> WMECO</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$43 - $82 per MWh</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">2017 - 2027</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="TEXT-DECORATION: underline;FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">Capacity Prices:</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> NU</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$1.40 - $10.18 per kW-Month</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">2015 - 2027</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> CL&P</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$1.40 - $9.50 per kW-Month</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">2015 - 2026</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> WMECO</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$1.40 - $10.18 per kW-Month</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">2015 - 2027</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="TEXT-DECORATION: underline;FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">Forward Reserve:</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> NU, CL&P</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$0.75 - $1.00 per kW-Month</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">2012 - 2024</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="TEXT-DECORATION: underline;FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">REC Prices:</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr><tr style="height: 9px"><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> NU, WMECO</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 142px; text-align:left;border-color:#000000;min-width:142px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$25 - $85 per REC</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 96px; text-align:center;border-color:#000000;min-width:96px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">2012 - 2027</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 120px; text-align:left;border-color:#000000;min-width:120px;"> </td></tr></table></div>
CY2012Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	8000000	USD
CY2012Q1	nu	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Liability Gain Loss Included In Reg Asset Liability FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityGainLossIncludedInRegAssetLiability	6000000	USD
CY2012Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	14500000	USD
CY2012Q1	nu	Rollforward Of Net Derivative Asset Liabilities Valued Using Unobservable Inputs RollforwardOfNetDerivativeAssetLiabilitiesValuedUsingUnobservableInputs	<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 9px"><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 215px; text-align:left;border-color:#000000;min-width:215px;"> <sup></sup></td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="7" style="width: 207px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:207px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">As of March 31, 2012</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="8" style="width: 221px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:221px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">As of March 31, 2011</font></td></tr><tr style="height: 9px"><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 215px; text-align:left;border-color:#000000;min-width:215px;"> <sup></sup></td><td colspan="2" style="width: 69px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:69px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Commodity</font></td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 55px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:55px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:53px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 63px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:63px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Commodity</font></td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 54px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:54px;"> </td><td style="width: 14px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 54px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:54px;"> </td></tr><tr style="height: 9px"><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 215px; text-align:left;border-color:#000000;min-width:215px;"> <sup></sup></td><td colspan="2" style="width: 69px; text-align:center;border-color:#000000;min-width:69px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">and Capacity</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 65px; text-align:center;border-color:#000000;min-width:65px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Commodity</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; text-align:left;border-color:#000000;min-width:53px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 63px; text-align:center;border-color:#000000;min-width:63px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">and Capacity</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 66px; text-align:center;border-color:#000000;min-width:66px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Commodity</font></td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 54px; text-align:left;border-color:#000000;min-width:54px;"> </td></tr><tr style="height: 9px"><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 215px; text-align:left;border-color:#000000;min-width:215px;"> <sup></sup></td><td colspan="2" style="width: 69px; text-align:center;border-color:#000000;min-width:69px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Contracts</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 65px; text-align:center;border-color:#000000;min-width:65px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Supply and</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; text-align:left;border-color:#000000;min-width:53px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 63px; text-align:center;border-color:#000000;min-width:63px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Contracts</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 66px; text-align:center;border-color:#000000;min-width:66px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Supply and</font></td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 54px; text-align:left;border-color:#000000;min-width:54px;"> </td></tr><tr style="height: 9px"><td colspan="2" style="width: 224px; text-align:left;border-color:#000000;min-width:224px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">NU</font><sup></sup></td><td colspan="2" style="width: 69px; text-align:center;border-color:#000000;min-width:69px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Required By</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 65px; text-align:center;border-color:#000000;min-width:65px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;"> Price Risk</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 63px; text-align:center;border-color:#000000;min-width:63px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Total</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 63px; text-align:center;border-color:#000000;min-width:63px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Required By</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 66px; text-align:center;border-color:#000000;min-width:66px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;"> Price Risk</font></td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td colspan="2" style="width: 68px; text-align:center;border-color:#000000;min-width:68px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Total</font></td></tr><tr style="height: 9px"><td colspan="2" style="width: 224px; text-align:left;border-color:#000000;min-width:224px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: left;">(Millions of Dollars)</font><sup></sup></td><td colspan="2" style="width: 69px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:69px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Regulation</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 65px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:65px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Management</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 63px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:63px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Level 3</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 63px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:63px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Regulation</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 66px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:66px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Management</font></td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td colspan="2" style="width: 68px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:68px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Level 3</font></td></tr><tr style="height: 9px"><td colspan="2" style="width: 224px; text-align:left;border-color:#000000;min-width:224px;"><font style="TEXT-DECORATION: underline;FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Derivatives, Net: </font><sup></sup></td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 59px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:59px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 55px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:55px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:53px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:53px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 54px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:54px;"> </td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 54px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:54px;"> </td></tr><tr style="height: 9px"><td colspan="2" style="width: 224px; text-align:left;border-color:#000000;min-width:224px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Fair Value as of Beginning of Period</font><sup></sup></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 59px; text-align:right;border-color:#000000;min-width:59px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (939.3)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (22.9)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 53px; text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (962.2)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 53px; text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (808.0)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (32.2)</font></td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (840.2)</font></td></tr><tr style="height: 10px"><td colspan="2" style="width: 224px; text-align:left;border-color:#000000;min-width:224px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Transfer to Level 2</font><sup></sup></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 59px; text-align:right;border-color:#000000;min-width:59px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> -</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 32.2</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 32.2</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> -</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> -</font></td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> -</font></td></tr><tr style="height: 24px"><td colspan="2" style="width: 224px; text-align:left;border-color:#000000;min-width:224px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Net Realized/Unrealized Gains/(Losses) Included in: </font><sup></sup></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 59px; text-align:left;border-color:#000000;min-width:59px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 55px; text-align:left;border-color:#000000;min-width:55px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; text-align:left;border-color:#000000;min-width:53px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; text-align:left;border-color:#000000;min-width:53px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 54px; text-align:left;border-color:#000000;min-width:54px;"> </td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 54px; text-align:left;border-color:#000000;min-width:54px;"> </td></tr><tr style="height: 9px"><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 215px; text-align:left;border-color:#000000;min-width:215px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;"> Net Income</font><sup>(1)</sup></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 59px; text-align:right;border-color:#000000;min-width:59px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> -</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 8.0</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 8.0</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> -</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 0.3</font></td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 0.3</font></td></tr><tr style="height: 9px"><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 215px; text-align:left;border-color:#000000;min-width:215px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;"> Regulatory Assets</font><sup></sup></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 59px; text-align:right;border-color:#000000;min-width:59px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 6.1</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (0.1)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 6.0</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (30.1)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (1.1)</font></td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (31.2)</font></td></tr><tr style="height: 9px"><td colspan="2" style="width: 224px; text-align:left;border-color:#000000;min-width:224px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Settlements</font><sup></sup></td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 59px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:59px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 21.0</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:55px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (6.5)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 14.5</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 53px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (5.8)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 54px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 4.2</font></td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 54px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (1.6)</font></td></tr><tr style="height: 9px"><td colspan="2" style="width: 224px; text-align:left;border-color:#000000;min-width:224px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Fair Value as of End of Period</font><sup></sup></td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 59px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:59px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (912.2)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:55px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 10.7</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 53px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (901.5)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 53px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:53px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (843.9)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 54px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (28.8)</font></td><td style="width: 14px; text-align:left;border-color:#000000;min-width:14px;"> </td><td style="width: 14px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:14px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">$</font></td><td style="width: 54px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (872.7)</font></td></tr></table></div><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 11px"><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 160px; text-align:left;border-color:#000000;min-width:160px;"> </td><td colspan="11" style="width: 297px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:297px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">As of March 31, 2012</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="8" style="width: 223px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:223px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">As of March 31, 2011</font></td></tr><tr style="height: 11px"><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 160px; text-align:left;border-color:#000000;min-width:160px;"> </td><td colspan="8" style="width: 223px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:223px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">CL&P</font></td><td style="width: 7px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:7px;"> </td><td colspan="2" style="width: 67px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">WMECO</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="8" style="width: 223px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:223px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">CL&P</font></td></tr><tr style="height: 11px"><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 160px; text-align:left;border-color:#000000;min-width:160px;"> </td><td colspan="2" style="width: 71px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:71px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Commodity</font></td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td colspan="2" style="width: 67px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Commodity</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:62px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Commodity</font></td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 65px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:65px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 58px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:58px;"> </td></tr><tr style="height: 11px"><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 160px; text-align:left;border-color:#000000;min-width:160px;"> </td><td colspan="2" style="width: 71px; text-align:center;border-color:#000000;min-width:71px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">and Capacity</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="2" style="width: 67px; text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Commodity</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td colspan="2" style="width: 67px; text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">and Capacity</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; text-align:center;border-color:#000000;min-width:62px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">and Capacity</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="2" style="width: 65px; text-align:center;border-color:#000000;min-width:65px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Commodity</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td></tr><tr style="height: 11px"><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 160px; text-align:left;border-color:#000000;min-width:160px;"> </td><td colspan="2" style="width: 71px; text-align:center;border-color:#000000;min-width:71px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Contracts</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="2" style="width: 67px; text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Supply and</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td colspan="2" style="width: 67px; text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Contracts</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; text-align:center;border-color:#000000;min-width:62px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Contracts</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="2" style="width: 65px; text-align:center;border-color:#000000;min-width:65px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Supply and</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td></tr><tr style="height: 11px"><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 160px; text-align:left;border-color:#000000;min-width:160px;"> </td><td colspan="2" style="width: 71px; text-align:center;border-color:#000000;min-width:71px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Required By</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="2" style="width: 67px; text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;"> Price Risk</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td colspan="2" style="width: 67px; text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Required By</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; text-align:center;border-color:#000000;min-width:62px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Required By</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="2" style="width: 65px; text-align:center;border-color:#000000;min-width:65px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;"> Price Risk</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td></tr><tr style="height: 11px"><td colspan="2" style="width: 167px; text-align:left;border-color:#000000;min-width:167px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: left;">(Millions of Dollars)</font></td><td colspan="2" style="width: 71px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:71px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Regulation</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="2" style="width: 67px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Management</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="2" style="width: 67px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Total Level 3</font></td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td colspan="2" style="width: 67px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:67px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Regulation</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:62px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Regulation</font></td><td style="width: 9px; text-align:center;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td colspan="2" style="width: 65px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:65px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Management</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 68px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:68px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 7pt;COLOR: #000000;TEXT-ALIGN: center;">Total Level 3</font></td></tr><tr style="height: 11px"><td colspan="2" style="width: 167px; text-align:left;border-color:#000000;min-width:167px;"><font style="TEXT-DECORATION: underline;FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Derivatives, Net: </font></td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:62px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:62px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 65px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:65px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 58px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:58px;"> </td></tr><tr style="height: 11px"><td colspan="2" style="width: 167px; text-align:left;border-color:#000000;min-width:167px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Fair Value as of Beginning of Period</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 62px; text-align:right;border-color:#000000;min-width:62px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (932.0)</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 58px; text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 0.4</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 58px; text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (931.6)</font></td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 58px; text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (7.3)</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 62px; text-align:right;border-color:#000000;min-width:62px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (808.0)</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 65px; text-align:right;border-color:#000000;min-width:65px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 1.9</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 58px; text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (806.1)</font></td></tr><tr style="height: 11px"><td colspan="2" style="width: 167px; text-align:left;border-color:#000000;min-width:167px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Net Realized/Unrealized </font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; text-align:left;border-color:#000000;min-width:62px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; text-align:left;border-color:#000000;min-width:62px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 65px; text-align:left;border-color:#000000;min-width:65px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td></tr><tr style="height: 11px"><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 160px; text-align:left;border-color:#000000;min-width:160px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Gains/(Losses) Included in</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; text-align:left;border-color:#000000;min-width:62px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; text-align:left;border-color:#000000;min-width:62px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 65px; text-align:left;border-color:#000000;min-width:65px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 58px; text-align:left;border-color:#000000;min-width:58px;"> </td></tr><tr style="height: 11px"><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 160px; text-align:left;border-color:#000000;min-width:160px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">Regulatory Assets</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; text-align:right;border-color:#000000;min-width:62px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 11.1</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (0.2)</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 10.9</font></td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (5.0)</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; text-align:right;border-color:#000000;min-width:62px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (30.1)</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 65px; text-align:right;border-color:#000000;min-width:65px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (1.0)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 58px; text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (31.1)</font></td></tr><tr style="height: 11px"><td colspan="2" style="width: 167px; text-align:left;border-color:#000000;min-width:167px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Settlements</font></td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:62px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 21.0</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 0.1</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 21.1</font></td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 58px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> -</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 62px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:62px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (5.8)</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 65px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:65px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">0.4</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 58px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (5.4)</font></td></tr><tr style="height: 11px"><td colspan="2" style="width: 167px; text-align:left;border-color:#000000;min-width:167px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Fair Value as of End of Period</font></td><td style="width: 9px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 62px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:62px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (899.9)</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 58px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> 0.3</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 58px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (899.6)</font></td><td style="width: 7px; text-align:left;border-color:#000000;min-width:7px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 58px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (12.3)</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 62px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:62px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (843.9)</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 65px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:65px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">1.3</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 58px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:58px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 8pt;COLOR: #000000;"> (842.6)</font></td></tr></table></div>
CY2012Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	32200000	USD
CY2011Q1	nu	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Liability Gain Loss Included In Reg Asset Liability FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityGainLossIncludedInRegAssetLiability	-31200000	USD
CY2011Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	-1600000	USD
CY2011Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	872700000	USD
CY2012Q1	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	4400000	USD
CY2011Q1	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	400000	USD
CY2012Q1	nu	Level2 Unrealized Gains Netincome Level2UnrealizedGainsNetincome	4600000	USD
CY2012Q1	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	2100000	USD
CY2012Q1	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	-100000	USD
CY2012Q1	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	90500000	USD
CY2012Q1	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	92500000	USD
CY2011Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	88400000	USD
CY2011Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	90200000	USD
CY2012Q1	nu	Fair Value Of Securities Under Fair Value Option FairValueOfSecuritiesUnderFairValueOption	44300000	USD
CY2011Q4	nu	Fair Value Of Securities Under Fair Value Option FairValueOfSecuritiesUnderFairValueOption	41100000	USD
CY2012Q1	us-gaap	Fair Value Option Changes In Fair Value Gain Loss FairValueOptionChangesInFairValueGainLoss	-3200000	USD
CY2011Q1	us-gaap	Fair Value Option Changes In Fair Value Gain Loss FairValueOptionChangesInFairValueGainLoss	-1900000	USD
CY2012Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	18400000	USD
CY2012Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	33500000	USD
CY2012Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	12000000	USD
CY2012Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	26600000	USD
CY2012Q1	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	90500000	USD
CY2012Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	18400000	USD
CY2012Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	33800000	USD
CY2012Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	12500000	USD
CY2012Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	27800000	USD
CY2012Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	92500000	USD
CY2012Q1	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	136800000	USD
CY2011Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	131300000	USD
CY2012Q1	us-gaap	Defined Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year Description DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYearDescription	Based on the current status of the Pension Plan, NU is required to make a contribution to the Pension Plan of approximately $197.3 million in 2012 to meet minimum funding requirements under the PPA. Contributions are being made in installments and began in January 2012. NU made contributions totaling $92 million ($87.7 million of which was contributed by PSNH) in the first quarter of 2012.
CY2012Q1	nu	Environmental Site Quantity EnvironmentalSiteQuantity	61	pure
CY2012Q1	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	31700000	USD
CY2011Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	31700000	USD
CY2012Q1	us-gaap	Accrual For Environmental Loss Contingencies Component Amount AccrualForEnvironmentalLossContingenciesComponentAmount	2300000	USD
CY2012Q1	nu	Cumulative Environmental Remediation Expense CumulativeEnvironmentalRemediationExpense	19500000	USD
CY2012Q1	nu	Range Of Potential Loss On Enivornmental Sites RangeOfPotentialLossOnEnivornmentalSites	MGP sites are sites that were operated several decades ago and produced manufacturing gas from coal, which resulted in certain byproducts in the environment that may pose a risk to human health and the environment.
CY2012Q1	nu	Cumulative Payments Environmental Loss Contingencies CumulativePaymentsEnvironmentalLossContingencies	17200000	USD
CY2012Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	196052770	shares
CY2012Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	196318359	shares
CY2012Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	380000000	shares
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	18894078	shares
CY2012Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	18790898	shares
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	380000000	shares
CY2012Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	381737	shares
CY2011Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	292789	shares
CY2011Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.64
CY2012Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.56
CY2012Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	105400000	USD
CY2012Q1	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	779800000	USD
CY2011Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	125600000	USD
CY2011Q1	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	882300000	USD
CY2011Q1	us-gaap	Assets Assets	14418500000	USD
CY2012Q1	us-gaap	Subsequent Event Description SubsequentEventDescription	On April 2, 2012, CL&P remarketed $62 million of tax-exempt PCRBs for a three-year period. Given the long-term nature of the remarketing, the $62 million has been classified as Long-Term Debt on the accompanying unaudited condensed consolidated balance sheets as of March 31, 2012. The PCRBs, which mature on May 1, 2031, carry a coupon rate of 1.55 percent during the current three-year fixed-rate period and are subject to mandatory tender for purchase on April 1, 2015. On April 2, 2012, NU repaid the NU parent $263 million 7.25 percent Series A Senior Notes that matured on April 1, 2012 with the proceeds from the issuance of the floating rate Series D Senior Notes issued on March 22, 2012. On April 10, 2012, NU acquired 100 percent of the outstanding common stock of NSTAR and NSTAR (through a successor, NSTAR LLC) became a direct wholly-owned subsidiary of NU. Refer to Note 2, "Merger of NU and NSTAR," for further information.
CY2012Q1	dei	Entity Registrant Name EntityRegistrantName	NORTHEAST UTILITIES
CY2012Q1	dei	Document Type DocumentType	10-Q
CY2012Q1	dei	Document Period End Date DocumentPeriodEndDate	2012-03-31
CY2012Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000072741
CY2012Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	313604078	shares
CY2011Q2	dei	Entity Public Float EntityPublicFloat	6218948649	USD
CY2012Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2012Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012Q1	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012Q1	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2012Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012Q1	dei	Amendment Flag AmendmentFlag	false

Files In Submission

Name	View Source	Status
0000072741-12-000044-index-headers.html	Edgar Link	pending
0000072741-12-000044-index.html	Edgar Link	pending
0000072741-12-000044.txt	Edgar Link	pending
0000072741-12-000044-xbrl.zip	Edgar Link	pending
clpcreditagreement20129_fina.htm	Edgar Link	pending
exh12clp.htm	Edgar Link	pending
exh12nu.htm	Edgar Link	pending
exh12psnh.htm	Edgar Link	pending
exh12wmeco.htm	Edgar Link	pending
exh311clp.htm	Edgar Link	pending
exh31clp.htm	Edgar Link	pending
exh31psnh.htm	Edgar Link	pending
exh31wmeco.htm	Edgar Link	pending
exh32clp.htm	Edgar Link	pending
exh32nu.htm	Edgar Link	pending
exh32psnh.htm	Edgar Link	pending
exh32wmeco.htm	Edgar Link	pending
exhibit311nu.htm	Edgar Link	pending
exhibit311psnh.htm	Edgar Link	pending
exhibit311wmeco.htm	Edgar Link	pending
exhibit31nu.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
march2012form10qedgar.htm	Edgar Link	pending
march2012form10qedgar002.gif	Edgar Link	pending
nu-20120331.xml	Edgar Link	completed
nu-20120331.xsd	Edgar Link	pending
nu-20120331_cal.xml	Edgar Link	unprocessable
nu-20120331_def.xml	Edgar Link	unprocessable
nu-20120331_lab.xml	Edgar Link	unprocessable
nu-20120331_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$ES
EVERSOURCE ENERGY Stock $es

2012 Q1 Form 10-Q Financial Statement

#000007274112000044 Filed on May 10, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ES EVERSOURCE ENERGY Stock $es

2012 Q1 Form 10-Q Financial Statement

#000007274112000044 Filed on May 10, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ES
EVERSOURCE ENERGY Stock $es