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2.2.0.7 false CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $) 002000 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) true false In Millions false false 1 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 u002 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u003 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ 3 PROPERTY, PLANT AND EQUIPMENT 1 us-gaap_PropertyPlantAndEquipmentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 4 Electric utility plant in service and other property 2 nee_ElectricUtilityPlantInServiceAndOtherProperty nee false debit instant Carrying amount at the balance sheet date for long-lived physical assets used in the normal conduct of business and not... false false false false false false false false false false false terselabel false 1 true true false false 47159000000 47159 false false false 2 true true false false 46330000000 46330 false false false xbrli:monetaryItemType monetary Carrying amount at the balance sheet date for long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, physical structures, machinery, vehicles, furniture, computer equipment, and similar items. Amount does not include construction in progress or depreciation. No authoritative reference available. false 5 Nuclear fuel 2 nee_NuclearFuel nee false debit instant The carrying amount, at gross, as of the balance sheet of nuclear fuel held as property plant and equipment. false false false false false false false false false false false terselabel false 1 false true false false 1441000000 1441 false false false 2 false true false false 1414000000 1414 false false false xbrli:monetaryItemType monetary The carrying amount, at gross, as of the balance sheet of nuclear fuel held as property plant and equipment. No authoritative reference available. false 6 Construction work in progress 2 us-gaap_ConstructionInProgressGross us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 3580000000 3580 false false false 2 false true false false 2425000000 2425 false false false xbrli:monetaryItemType monetary Carrying amount at the balance sheet date of long-lived asset under construction that include construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 false 7 Less accumulated depreciation and amortization 2 nee_AccumulatedDepreciationAndAmortization nee false na instant The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including... false false false false false false false false false false false terselabel false 1 false true false false -14602000000 -14602 false false false 2 false true false false -14091000000 -14091 false false false xbrli:monetaryItemType monetary The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including nuclear fuel, but not including land) that has been recognized in the income statement. No authoritative reference available. false 8 Total property, plant and equipment - net ($1,480 related to VIEs at June 30, 2010) 2 us-gaap_PropertyPlantAndEquipmentNet us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 37578000000 37578 false false false 2 false true false false 36078000000 36078 false false false xbrli:monetaryItemType monetary Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, and production equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 true 9 CURRENT ASSETS 1 us-gaap_AssetsCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 10 Cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 829000000 829 false false false 2 false true false false 238000000 238 false false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 false 11 Customer receivables, net of allowances of $17 and $23, respectively 2 us-gaap_AccountsReceivableNetCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 1485000000 1485 false false false 2 false true false false 1431000000 1431 false false false xbrli:monetaryItemType monetary Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph a(1) -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 false 12 Other receivables, net of allowances of $1 and $1, respectively 2 nee_OtherReceivablesNet nee false na instant Carrying amounts due as of the balance sheet date from parties or arising from transactions, other than customer receivables... false false false false false false false false false false false terselabel false 1 false true false false 540000000 540 false false false 2 false true false false 816000000 816 false false false xbrli:monetaryItemType monetary Carrying amounts due as of the balance sheet date from parties or arising from transactions, other than customer receivables as specified in the taxonomy. Represents the aggregate amount of loans due within one year, as well as other amounts due, from partnership and joint ventures in which the company has an ownership interest, amounts due from taxing authorities, interest receivable and other amounts due within one year for various services, net of an allowance for any amount deemed to be uncertain of collection. No authoritative reference available. false 13 Materials, supplies and fossil fuel inventory 2 nee_MaterialsSuppliesAndFossilFuelInventory nee false na instant Carrying amount (at average cost) as of the balance sheet date of materials, supplies and fossil fuel inventories less all... false false false false false false false false false false false terselabel false 1 false true false false 826000000 826 false false false 2 false true false false 877000000 877 false false false xbrli:monetaryItemType monetary Carrying amount (at average cost) as of the balance sheet date of materials, supplies and fossil fuel inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year), such as nuclear fuel. No authoritative reference available. false 14 Regulatory Assets: 2 nee_RegulatoryAssetsCurrentAbstract nee false na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 15 Deferred clause and franchise expenses 3 nee_CurrentRegulatoryAssetsDeferredClauseAndFranchiseExpenses nee false na instant Carrying amount as of the balance sheet date of deferred clause and franchise expenses of regulated entities that are... false false false false false false false false false false false terselabel false 1 false true false false 106000000 106 false false false 2 false true false false 69000000 69 false false false xbrli:monetaryItemType monetary Carrying amount as of the balance sheet date of deferred clause and franchise expenses of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. No authoritative reference available. false 16 Securitized storm-recovery costs 3 nee_CurrentRegulatoryAssetsSecuritizedStormRecoveryCosts nee false na instant Carrying amount as of the balance sheet date of storm recovery property of a regulated entity expected to be amortized within... false false false false false false false false false false false terselabel false 1 false true false false 72000000 72 false false false 2 false true false false 69000000 69 false false false xbrli:monetaryItemType monetary Carrying amount as of the balance sheet date of storm recovery property of a regulated entity expected to be amortized within one year based on expected collections from ratepayers for storm recovery bonds issued for unrecovered storm costs pursuant to state securitization provisions and a financing order issued by a regulator. No authoritative reference available. false 17 Derivatives 3 nee_CurrentRegulatoryAssetsDerivatives nee false na instant Carrying amount as of the balance sheet date of deferred derivatives of regulated entities that are expected to be recovered... false false false false false false false false false false false terselabel false 1 false true false false 245000000 245 false false false 2 false true false false 68000000 68 false false false xbrli:monetaryItemType monetary Carrying amount as of the balance sheet date of deferred derivatives of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. No authoritative reference available. false 18 Other 3 nee_CurrentRegulatoryAssetsOther nee false na instant Carrying amount as of the balance sheet date of other deferred costs, not listed above, of regulated entities that are... false false false false false false false false false false false terselabel false 1 false true false false 4000000 4 false false false 2 false true false false 3000000 3 false false false xbrli:monetaryItemType monetary Carrying amount as of the balance sheet date of other deferred costs, not listed above, of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. No authoritative reference available. false 19 Derivatives 2 nee_CurrentAssetsDerviatives nee false na instant Fair values as of the balance sheet date for all assets resulting from contracts that meet the criteria of being accounted... false false false false false false false false false false false terselabel false 1 false true false false 470000000 470 [1] false false false 2 false true false false 357000000 357 [1] false false false xbrli:monetaryItemType monetary Fair values as of the balance sheet date for all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments and which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements and net of obligations to return margin cash collateral in accordance with FASB Staff Position (FSP) FIN 39-1, "Amendment of FASB Interpretation No. 39." No authoritative reference available. false 20 Other 2 us-gaap_OtherAssetsCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 722000000 722 false false false 2 false true false false 409000000 409 false false false xbrli:monetaryItemType monetary Aggregate carrying amount, as of the balance sheet date, of current assets not separately presented elsewhere in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 8 -Article 5 false 21 Total current assets 2 us-gaap_AssetsCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 5299000000 5299 false false false 2 false true false false 4337000000 4337 false false false xbrli:monetaryItemType monetary Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 9 -Article 5 true 22 OTHER ASSETS 1 us-gaap_OtherAssetsNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 23 Special use funds 2 nee_OtherAssetsSpecialUseFunds nee false na instant Decommission fund to pay for the costs of decontaminating and decommissioning of facilities through collection of revenues... false false false false false false false false false false false terselabel false 1 false true false false 3372000000 3372 false false false 2 false true false false 3390000000 3390 false false false xbrli:monetaryItemType monetary Decommission fund to pay for the costs of decontaminating and decommissioning of facilities through collection of revenues derived from utility assessments and government appropriations. Decommission fund investment for the process whereby a power station, at the end of its economic life, is taken permanently out of service and its site made available for other purposes. In the case of a nuclear station this comprises three different states of clearance. Immediately after the final closure, radioactive material such as nuclear fuel and operational waste is removed and the buildings surrounding the reactor shield are dismantled and finally the reactor itself is dismantled. Also includes storm fund assets held by a regulated entity. No authoritative reference available. false 24 Other investments 2 nee_OtherInvestmentsMareketableSecurities nee false na instant Investments in marketable securities and other noncurrent investments not otherwise specified in the taxonomy. false false false false false false false false false false false terselabel false 1 false true false false 943000000 943 false false false 2 false true false false 935000000 935 false false false xbrli:monetaryItemType monetary Investments in marketable securities and other noncurrent investments not otherwise specified in the taxonomy. No authoritative reference available. false 25 Prepaid benefit costs 2 nee_PrepaidPensionCostsContributionsInExcess nee false na instant Cumulative employer's contributions in excess of net pension cost recognized. false false false false false false false false false false false terselabel false 1 false true false false 1212000000 1212 false false false 2 false true false false 1184000000 1184 false false false xbrli:monetaryItemType monetary Cumulative employer's contributions in excess of net pension cost recognized. No authoritative reference available. false 26 Regulatory Assets: 2 nee_RegulatoryAssetsNoncurrentAbstract nee false na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 27 Securitized storm-recovery costs ($376 related to a VIE at June 30, 2010) 3 nee_NonCurrentRegulatoryAssetsSecuritizedStormRecoveryCosts nee false na instant Carrying amount as of the balance sheet date of storm recovery property of a regulated entity expected to be amortized based... false false false false false false false false false false false terselabel false 1 false true false false 613000000 613 false false false 2 false true false false 644000000 644 false false false xbrli:monetaryItemType monetary Carrying amount as of the balance sheet date of storm recovery property of a regulated entity expected to be amortized based on expected collections from ratepayers for storm recovery bonds issued for unrecovered storm costs pursuant to state securitization provisions and a financing order issued by a regulator, excluding amounts expected to be amortized within one year. No authoritative reference available. false 28 Deferred clause expenses 3 nee_NonCurrentRegulatoryAssetsDeferredClauseAndFranchiseExpenses nee false na instant Carrying amount as of the balance sheet date of deferred clause expenses of regulated entities that are not expected to be... false false false false false false false false false false false terselabel false 1 false true false false 215000000 215 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Carrying amount as of the balance sheet date of deferred clause expenses of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. No authoritative reference available. false 29 Other 3 us-gaap_RegulatedEntityOtherAssetsNoncurrent us-gaap true debit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 327000000 327 false false false 2 false true false false 265000000 265 false false false xbrli:monetaryItemType monetary Total of noncurrent other assets held by public utility entities No authoritative reference available. false 30 Other 2 us-gaap_OtherAssetsNoncurrent us-gaap true debit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 1650000000 1650 false false false 2 false true false false 1625000000 1625 false false false xbrli:monetaryItemType monetary Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet due to materiality considerations. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 false 31 Total other assets 2 us-gaap_AssetsNoncurrent us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 8332000000 8332 false false false 2 false true false false 8043000000 8043 false false false xbrli:monetaryItemType monetary Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 true 32 TOTAL ASSETS 1 us-gaap_Assets us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 51209000000 51209 false false false 2 false true false false 48458000000 48458 false false false xbrli:monetaryItemType monetary Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 true 33 CAPITALIZATION 1 nee_TotalCapitalizationAbstract nee false na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 34 Common stock 2 us-gaap_CommonStockValue us-gaap true credit instant No definition available. false false false false false false false false false false false label false 1 false true false false 4000000 4 false false false 2 false true false false 4000000 4 false false false xbrli:monetaryItemType monetary Dollar value of issued common stock whether issued at par value, no par or stated value. This item includes treasury stock repurchased by the entity. Note: elements for number of common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false 35 Additional paid-in capital 2 us-gaap_AdditionalPaidInCapitalCommonStock us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 5173000000 5173 false false false 2 false true false false 5055000000 5055 false false false xbrli:monetaryItemType monetary Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 false 36 Retained earnings 2 us-gaap_RetainedEarningsAccumulatedDeficit us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 8303000000 8303 false false false 2 false true false false 7739000000 7739 false false false xbrli:monetaryItemType monetary The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 false 37 Accumulated other comprehensive income 2 us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap true credit instant No definition available. false false false false false false false false false false false label false 1 false true false false 49000000 49 false false false 2 false true false false 169000000 169 false false false xbrli:monetaryItemType monetary Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at fiscal year-end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, and unrealized gains and losses on certain investments in debt and equity securities as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 26 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 false 38 Total common shareholders' equity 2 nee_TotalCommonShareholdersEquity nee false na instant No definition available. false false false false false false false false false false false false 1 false true false false 13529000000 13529 false false false 2 false true false false 12967000000 12967 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 39 Long-term debt ($858 related to VIEs at June 30, 2010) 2 us-gaap_LongTermDebtNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 17171000000 17171 false false false 2 false true false false 16300000000 16300 false false false xbrli:monetaryItemType monetary Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 false 40 Total capitalization 2 nee_TotalCapitalization nee false na instant The sum of Stockholders' Equity and Long-term debt, Noncurrent, Total, as defined above. false false false false false false false false false false false totallabel false 1 false true false false 30700000000 30700 false false false 2 false true false false 29267000000 29267 false false false xbrli:monetaryItemType monetary The sum of Stockholders' Equity and Long-term debt, Noncurrent, Total, as defined above. No authoritative reference available. true 41 CURRENT LIABILITIES 1 us-gaap_LiabilitiesCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 42 Commercial paper 2 us-gaap_CommercialPaper us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 1716000000 1716 false false false 2 false true false false 2020000000 2020 false false false xbrli:monetaryItemType monetary Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a(3) -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Subparagraph 2 -Article 9 false 43 Notes payable 2 nee_NotesPayableAsOfBalanceSheetDate nee false na instant Sum of the carrying values as of the balance sheet date of notes payable issued for a period of less than one year. false false false false false false false false false false false terselabel false 1 false true false false 250000000 250 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Sum of the carrying values as of the balance sheet date of notes payable issued for a period of less than one year. No authoritative reference available. false 44 Current maturities of long-term debt 2 us-gaap_LongTermDebtCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 1056000000 1056 false false false 2 false true false false 569000000 569 false false false xbrli:monetaryItemType monetary Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 false 45 Accounts payable 2 us-gaap_AccountsPayableCurrentAndNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 1316000000 1316 false false false 2 false true false false 992000000 992 false false false xbrli:monetaryItemType monetary Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 false 46 Customer deposits 2 us-gaap_CustomerDepositsCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 635000000 635 false false false 2 false true false false 613000000 613 false false false xbrli:monetaryItemType monetary The current portion, due within one year or the normal operating cycle, if longer, of money or property received from customers which is either to be returned upon satisfactory contract completion or applied to customer receivables in accordance with the terms of the contract or the understandings. No authoritative reference available. false 47 Accrued interest and taxes 2 nee_AccruedInterestAndTaxes nee false na instant Carrying value as of the balance sheet date of the current portion of obligations incurred and payable (due within one year)... false false false false false false false false false false false terselabel false 1 false true false false 606000000 606 false false false 2 false true false false 466000000 466 false false false xbrli:monetaryItemType monetary Carrying value as of the balance sheet date of the current portion of obligations incurred and payable (due within one year) for statutory income, sales, use, payroll, excise, real, property and other taxes. AND Sum of the carrying values as of the balance sheet date of interest payable (due within one year) on all forms of debt. No authoritative reference available. false 48 Regulatory Liabilities: 2 nee_RegulatoryLiabilitiesCurrentAbstract nee false na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 49 Deferred clause and franchise revenues 3 nee_CurrentRegulatoryLiabilitiesDeferredClauseAndFranchiseRevenues nee false na instant Carrying amount as of the balance sheet date of capitalized revenues of regulated entities that are expected to be paid back... false false false false false false false false false false false terselabel false 1 false true false false 29000000 29 false false false 2 false true false false 377000000 377 false false false xbrli:monetaryItemType monetary Carrying amount as of the balance sheet date of capitalized revenues of regulated entities that are expected to be paid back to ratepayers as a reduction of revenue sources within one year or the normal operating cycle, if longer. No authoritative reference available. false 50 Pension 3 nee_CurrentRegulatoryLiabilitiesPension nee false na instant Carrying amount as of the balance sheet date of the net unrecognized prior service costs (benefits) and actuarial losses... false false false false false false false false false false false terselabel false 1 false true false false 2000000 2 false false false 2 false true false false 2000000 2 false false false xbrli:monetaryItemType monetary Carrying amount as of the balance sheet date of the net unrecognized prior service costs (benefits) and actuarial losses (gains) of regulated entities expected to be paid to ratepayers within one year or the normal operating cycle if longer. Note that for an unregulated entity, this amount would appear as a component of other comprehensive income and is equivalent to UGT " Other Comprehensive Income, Defined Benefit Plan's Adjustment, before Tax, Period Increase (Decrease)." No authoritative reference available. false 51 Derivatives 2 nee_DerivativeLiabilitiesContract nee false na instant Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being... false false false false false false false false false false false terselabel false 1 false true false false 516000000 516 false false false 2 false true false false 221000000 221 false false false xbrli:monetaryItemType monetary Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements and net of rights to reclaim margin cash collateral in accordance with FASB Staff Position (FSP) FIN 39-1, Amendment of FASB Interpretation No. 39. No authoritative reference available. false 52 Other 2 us-gaap_OtherLiabilitiesCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 1000000000 1000 false false false 2 false true false false 1189000000 1189 false false false xbrli:monetaryItemType monetary Aggregate carrying amount, as of the balance sheet date, of current obligations not separately disclosed in the balance sheet due to materiality considerations. Current liabilities are expected to be paid within one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 3 -Section A -Paragraph 8 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 6 -Paragraph 15 false 53 Total current liabilities 2 us-gaap_LiabilitiesCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 7126000000 7126 false false false 2 false true false false 6449000000 6449 false false false xbrli:monetaryItemType monetary Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 21 -Article 5 true 54 OTHER LIABILITIES AND DEFERRED CREDITS 1 us-gaap_LiabilitiesNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 55 Asset retirement obligations 2 us-gaap_AssetRetirementObligationsNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 2447000000 2447 false false false 2 false true false false 2418000000 2418 false false false xbrli:monetaryItemType monetary Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 3, 10, 22 false 56 Accumulated deferred income taxes 2 us-gaap_DeferredTaxLiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 5242000000 5242 false false false 2 false true false false 4860000000 4860 false false false xbrli:monetaryItemType monetary Represents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A noncurrent taxable temporary difference is a difference between the tax basis and the carrying amount of a noncurrent asset or liability in the financial statements prepared in accordance with generally accepted accounting principles. In a classified statement of financial position, an enterprise shall separate deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets shall be classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, shall be classified according to the expected reversal date of the temporary difference. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 41, 42 false 57 Regulatory Liabilities: 2 us-gaap_RegulatoryLiabilitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 58 Accrued asset removal costs 3 nee_NonCurrentRegulatoryLiabilityAccruedAssetRemovalCosts nee false na instant The regulatory liability as of the balance sheet date for the amount recoverable from ratepayers for removal costs associated... false false false false false false false false false false false terselabel false 1 false true false false 2211000000 2211 false false false 2 false true false false 2251000000 2251 false false false xbrli:monetaryItemType monetary The regulatory liability as of the balance sheet date for the amount recoverable from ratepayers for removal costs associated with utility plant in service which are not recognized as a liability under Statement of Financial Accounting Standards No.143, "Accounting for Asset Retirement Obligations" and FASB Interpretation No. 47, "Accounting for Conditional Asset Retirement Obligations." No authoritative reference available. false 59 Asset retirement obligation regulatory expense difference 3 nee_NonCurrentRegulatoryLiabilityAssetRetirementObligationRegulatoryExpenseDifference nee false na instant The regulatory liability as of the balance sheet date for the difference between the expense recognized under Statement of... false false false false false false false false false false false terselabel false 1 false true false false 623000000 623 false false false 2 false true false false 671000000 671 false false false xbrli:monetaryItemType monetary The regulatory liability as of the balance sheet date for the difference between the expense recognized under Statement of Financial Accounting Standards No.143, "Accounting for Asset Retirement Obligations" and FASB Interpretation No. 47, "Accounting for Conditional Asset Retirement Obligations," and the amount recoverable from ratepayers. No authoritative reference available. false 60 Pension 3 nee_NonCurrentRegulatoryLiabilityPension nee false na instant Carrying amount as of the balance sheet date of the net unrecognized prior service costs (benefits) and actuarial losses... false false false false false false false false false false false terselabel false 1 false true false false 15000000 15 false false false 2 false true false false 16000000 16 false false false xbrli:monetaryItemType monetary Carrying amount as of the balance sheet date of the net unrecognized prior service costs (benefits) and actuarial losses (gains) of regulated entities not expected to be paid to ratepayers within one year or the normal operating cycle if longer. Note that for an unregulated entity, this amount would appear as a component of other comprehensive income and is equivalent to UGT " Other Comprehensive Income, Defined Benefit Plan's Adjustment, before Tax, Period Increase (Decrease)." No authoritative reference available. false 61 Other 3 nee_NonCurrentRegulatoryLiabilityOther nee false na instant Carrying amount as of the balance sheet date of other regulatory liabilities, not separately disclosed in the balance sheet... false false false false false false false false false false false terselabel false 1 false true false false 276000000 276 false false false 2 false true false false 244000000 244 false false false xbrli:monetaryItemType monetary Carrying amount as of the balance sheet date of other regulatory liabilities, not separately disclosed in the balance sheet due to materiality considerations, of regulated entities that are not expected to be returned to ratepayers within one year. No authoritative reference available. false 62 Derivatives 2 nee_OtherLiabilitiesDerivatives nee false na instant Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being... false false false false false false false false false false false terselabel false 1 false true false false 320000000 320 false false false 2 false true false false 170000000 170 false false false xbrli:monetaryItemType monetary Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and which are expected to be extinguished or otherwise disposed of after one year or beyond the normal operating cycle, if longer, net of the effects of master netting arrangements and net of rights to reclaim margin cash collateral in accordance with FASB Staff Position (FSP) FIN 39-1, "Amendment of FASB Interpretation No. 39." No authoritative reference available. false 63 Other ($883 related to VIEs at June 30, 2010) 2 us-gaap_OtherLiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 2249000000 2249 false false false 2 false true false false 2112000000 2112 false false false xbrli:monetaryItemType monetary Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet due to materiality considerations. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 24 -Article 5 false 64 Total other liabilities and deferred credits 2 us-gaap_LiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 13383000000 13383 false false false 2 false true false false 12742000000 12742 false false false xbrli:monetaryItemType monetary Total obligations incurred as part of normal operations that is expected to be repaid beyond the following twelve months or one business cycle. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22, 23, 24, 25, 26, 27 -Article 5 true 65 COMMITMENTS AND CONTINGENCIES 1 us-gaap_CommitmentsAndContingencies2009 us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0     false false false 2 false false false false 0 0     false false false xbrli:stringItemType string Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. This caption alerts the reader that one or more notes to the financial statements disclose pertinent information about the entity's commitments and contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 25 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 9 false 66 TOTAL CAPITALIZATION AND LIABILITIES 1 us-gaap_LiabilitiesAndStockholdersEquity us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 true true false false 51209000000 51209 false false false 2 true true false false 48458000000 48458 false false false xbrli:monetaryItemType monetary Total of all Liabilities and Stockholders' Equity items. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 32 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 25 -Article 7 true 1 At June 30, 2010 and December 31, 2009, NextEra Energy's balances reflect the netting of $14 million and $4 million, respectively, in margin cash collateral received from counterparties. 2 64 false Millions UnKnown UnKnown false true