XML 77 R57.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Derivative Instruments (Income Statement Disclosure) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Gains (losses) related to derivatives not designated as hedging instruments [Abstract] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments | $ 20 | $ 80 | $ 153
Not Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Gains (Losses) Included In Operating Revenues [Member] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments [Abstract] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments | 762 | 377 | 454
Not Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Gains (Losses) Included In Fuel, Purchased Power And Interchange [Member] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments [Abstract] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments | 0 | (2) | 0
Not Designated as Hedging Instrument [Member] | Foreign currency contracts [Member] | Gain (loss) included in interest expense [Member] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments [Abstract] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments | (7) | 19 | 55
Not Designated as Hedging Instrument [Member] | Foreign currency contracts [Member] | Gains (Losses) Included In Other - Net [Member] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments [Abstract] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments | 0 | 0 | (4)
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Gain (loss) included in interest expense [Member] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments [Abstract] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments | (699) | (280) | (223)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Not Designated as Hedging Instrument [Member] | Foreign currency contracts [Member] | Gain (loss) included in interest expense [Member] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments [Abstract] |  |  |
Interest Expense | (4) | (4) | (81)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Gain (loss) included in interest expense [Member] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments [Abstract] |  |  |
Interest Expense | (32) | (30) | (48)
FPL[Member] |  |  |
Gains (losses) related to derivatives not designated as hedging instruments [Abstract] |  |  |
Gains (losses) on commodity contracts, recorded as regulatory assets and or liabilities on the balance sheet due to regulatory treatment | $ 9 | $ (31) | $ (169)

X
- Definition Pursuant to regulatory accounting treatment, net gain (loss) recorded by FPL that is included in regulatory assets and or liabilities for the period from the net change in fair value of derivative instrument not designated as hedging instrument. + References No definition available. + Details
Name: | nee_GainLossesOnCommodityContractsNotDesignatedAsHedgesRecordedAsRegulatoryAssetsLiabilities
Namespace Prefix: | nee_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | nee_ScheduleOfDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossInStatementOfFinancialPerformanceAbstract
Namespace Prefix: | nee_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (210.5-03(11)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 + Details
Name: | us-gaap_InterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=nee_GainsLossesIncludedInOperatingRevenuesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=nee_GainsLossesIncludedInFuelPurchasedPowerAndInterchangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=nee_GainLossIncludedInInterestExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=nee_GainsLossesIncludedInOtherNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis=us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=nee_FloridaPowerLightCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |