XML 124 R87.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Employee Retirement Benefits - Fair Value of Pension Plan Assets (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Equity Securities [Member] |  |
Fair value measurements of plan assets [Abstract] |  |
Foreign investments | $ 591 | $ 526
Equity Securities [Member] | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 1,450 | 1,252
Equity Securities [Member] | Level 1 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 1,444 | 1,246
Equity Securities [Member] | Level 2 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 5 | 5
Equity Securities [Member] | Level 3 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 1 | 1
Equity Commingled Vehicles [Member] |  |
Fair value measurements of plan assets [Abstract] |  |
Foreign investments | 222 | 191
Equity Commingled Vehicles [Member] | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 754 | 731
Equity Commingled Vehicles [Member] | Level 1 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 | 0
Equity Commingled Vehicles [Member] | Level 2 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 754 | 731
Equity Commingled Vehicles [Member] | Level 3 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 | 0
U.S. Government And Municipal Bonds [Member] | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 101 | 90
U.S. Government And Municipal Bonds [Member] | Level 1 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 96 | 85
U.S. Government And Municipal Bonds [Member] | Level 2 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 5 | 5
U.S. Government And Municipal Bonds [Member] | Level 3 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 | 0
Corporate debt securities [Member] |  |
Fair value measurements of plan assets [Abstract] |  |
Foreign investments | 72 | 83
Corporate debt securities [Member] | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 252 | 272
Corporate debt securities [Member] | Level 1 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 | 0
Corporate debt securities [Member] | Level 2 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 252 | 272
Corporate debt securities [Member] | Level 3 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 | 0
Asset-backed securities [Member] |  |
Fair value measurements of plan assets [Abstract] |  |
Foreign investments | 157 | 129
Asset-backed securities [Member] | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 500 | 413
Asset-backed securities [Member] | Level 1 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 | 0
Asset-backed securities [Member] | Level 2 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 500 | 413
Asset-backed securities [Member] | Level 3 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 | 0
Debt Security Commingled Vehicles [Member] |  |
Fair value measurements of plan assets [Abstract] |  |
Foreign investments | 2 |
Debt Security Commingled Vehicles [Member] | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 184 | 130
Debt Security Commingled Vehicles [Member] | Level 1 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 | 0
Debt Security Commingled Vehicles [Member] | Level 2 |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 184 | 130
Debt Security Commingled Vehicles [Member] | Level 3 |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 | 0
Convertible securities [Member] |  |
Fair value measurements of plan assets [Abstract] |  |
Foreign investments | 21 | 30
Convertible securities [Member] | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 255 | 417
Convertible securities [Member] | Level 1 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 8 | 50
Convertible securities [Member] | Level 2 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 247 | 367
Convertible securities [Member] | Level 3 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 | 0
Other Security Investments |  |
Fair value measurements of plan assets [Abstract] |  |
Foreign investments | 2 |
Other Security Investments | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 8 |
Other Security Investments | Level 1 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 6 |
Other Security Investments | Level 2 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 2 |
Other Security Investments | Level 3 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 0 |
Total Investments |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 4,897 | 4,543
Total Investments | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 3,504 | 3,305
Total Investments | Level 1 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 1,554 | 1,381
Total Investments | Level 2 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 1,949 | 1,923
Total Investments | Level 3 | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 1 | 1
Total Investments | Fair Value Measured at Net Asset Value Per Share | Carrying Amount |  |
Fair value measurements of plan assets [Abstract] |  |
Fair value | 1,393 | 1,238
Investments measured at net asset value [Member] |  |
Fair value measurements of plan assets [Abstract] |  |
Foreign investments | $ 240 | $ 242

X
- Definition The amount of foreign investments included in plan assets. + References No definition available. + Details
Name: | nee_ForeignInvestmentsIncludedInPlanAssets
Namespace Prefix: | nee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=nee_EquityCommingledVehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=nee_UsGovernmentAndMunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_MortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=nee_DebtSecurityCommingledVehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_ConvertibleDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_OtherAggregatedInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=nee_TotalInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=nee_InvestmentsmeasuredatnetassetvalueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |