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Summary of Significant Accounting and Reporting Policies - Additional Information (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) facility basisPoint | Apr. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Sep. 30, 2024 USD ($) facility basisPoint | Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) facility MW | Sep. 30, 2024 USD ($) facility basisPoint MW | Sep. 30, 2023 USD ($) | Dec. 31, 2025 USD ($) | Oct. 22, 2024 USD ($) | Dec. 31, 2023 USD ($)
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted cash and cash equivalents, current | $ 311.0 |  |  | $ 311.0 |  |  | $ 311.0 |  |  |  | $ 730.0
Restricted cash related to margin cash collateral that is netted against derivative assets | (138.0) |  |  | (138.0) |  |  | (138.0) |  |  |  | (194.0)
restricted cash related to margin cash collateral that is netted against derivative liabilities | 207.0 |  |  | 207.0 |  |  | 207.0 |  |  |  | 815.0
Gain in connection with sale |  |  |  | 231.0 | $ 7.0 |  | 318.0 | $ 11.0 |  |  |
Investment in equity method investees | 7,259.0 |  |  | 7,259.0 |  |  | 7,259.0 |  |  |  | 6,156.0
Distributions of earnings from equity method investees |  |  |  |  |  |  | 641.0 | 520.0 |  |  |
Supplier finance program, obligation | 1,600.0 |  |  | 1,600.0 |  |  | 1,600.0 |  |  |  | 4,700.0
Florida Power & Light Company |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Tax credits sold |  |  |  |  |  |  | 768.0 |  |  |  |
Florida Power & Light Company |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Natural Gas Mid-Course Correction, Value |  | $ 662.0 |  |  |  |  |  |  |  |  |
Fuel Mid-Course Correction, Period |  | 8 months |  |  |  |  |  |  |  |  |
Recoverable storm restoration costs | 300.0 |  |  |  |  |  |  |  |  |  |
Storm reserve, value | 80.0 |  |  | 80.0 |  |  | 80.0 |  |  |  |
Recoverable restoration costs in excess of storm reserve | 200.0 |  |  | 200.0 |  |  | 200.0 |  |  |  |
Restricted cash and cash equivalents, current | 102.0 |  |  | 102.0 |  |  | 102.0 |  |  |  | 15.0
Florida Power & Light Company | Forecast |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Recoverable storm restoration costs |  |  |  |  |  |  |  |  | $ 1,200.0 |  |
Storm reserve, value |  |  |  |  |  |  |  |  | $ 150.0 |  |
Recoverable restoration costs in excess of storm reserve |  |  |  |  |  |  |  |  |  | $ 800.0 |
NextEra Energy Resources |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Investment in equity method investees |  |  |  |  | 4,200.0 |  |  | 4,200.0 |  |  |
income associated with differential membership interests |  |  |  | 281.0 | $ 212.0 |  | 986.0 | $ 820.0 |  |  |
NextEra Energy Resources | Disposed of by Sale [Member] | Three Natural Gas Pipelines and Certain Oil and Gas Shale Formations |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price | 101.0 |  |  | 101.0 |  |  | 101.0 |  |  |  |
Gain in connection with sale |  |  |  | 120.0 |  |  | 120.0 |  |  |  |
Gain (after tax) in connection with sale |  |  |  | 77.0 |  |  | 77.0 |  |  |  |
Plant, Property, and Equipment, Decrease from Deconsolidation |  |  |  |  |  |  | 2,211.0 |  |  |  |
Long-term Debt, Decrease from Deconsolidation |  |  |  |  |  |  | 1,833.0 |  |  |  |
Investment in equity method investees | 396.0 |  |  | 396.0 |  |  | 396.0 |  |  |  |
NextEra Energy Resources | United States, Geographically Dispersed | Disposed of by Sale [Member] | Portfolio of Wind and Solar Generation Facilities |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price | 900.0 |  |  | 900.0 |  |  | 900.0 |  |  |  |
Gain in connection with sale |  |  |  | 103.0 |  |  | 103.0 |  |  |  |
Gain (after tax) in connection with sale |  |  |  | 76.0 |  |  | 76.0 |  |  |  |
Plant, Property, and Equipment, Decrease from Deconsolidation |  |  |  |  |  |  | 2,520.0 |  |  |  |
Noncontrolling Interest, Decrease from Deconsolidation |  |  |  |  |  |  | 844.0 |  |  |  |
Investment in equity method investees | 831.0 |  |  | 831.0 |  |  | 831.0 |  |  |  |
NextEra Energy Resources | United States, Geographically Dispersed | Disposed of by Sale [Member] | Portfolio of Wind and Solar Generation Facilities | Forecast |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Distributions of earnings from equity method investees |  |  | $ 390.0 |  |  |  |  |  |  |  |
NextEra Energy Resources | United States, Geographically Dispersed | Disposed of by Sale [Member] | Five wind generation facilities and three solar facilities located in multiple regions |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price |  |  |  |  |  | $ 566.0 |  |  |  |  |
Disposal Group, Including Discontinued Operation, Working Capital |  |  |  |  |  | $ 32.0 |  |  |  |  |
NextEra Energy Resources | Differential Membership Interests |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interests associated with Differential Membership Interests | $ 8,043.0 |  |  | $ 8,043.0 |  |  | $ 8,043.0 |  |  |  | $ 8,857.0
Subsidiaries of NextEra Energy Resources | Disposed of by Sale [Member] | Certain Oil and Gas Shale Formations |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership percentage sold | 100.00% |  |  | 100.00% |  |  | 100.00% |  |  |  |
Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed | Disposed of by Sale [Member] | Portfolio of Wind and Solar Generation Facilities |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of wind generation facilities | facility | 5 |  |  | 5 |  |  | 5 |  |  |  |
Number of solar generation facilities | facility | 3 |  |  | 3 |  |  | 3 |  |  |  |
Generating capacity (MW) | MW |  |  |  |  |  |  | 1,634 |  |  |  |
Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed | Disposed of by Sale [Member] | Five wind generation facilities and three solar facilities located in multiple regions |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of wind generation facilities | facility |  |  |  |  |  | 5 |  |  |  |  |
Number of solar generation facilities | facility |  |  |  |  |  | 3 |  |  |  |  |
Generating capacity (MW) | MW |  |  |  |  |  | 688 |  |  |  |  |
Subsidiaries of NextEra Energy Resources | Southern U.S. | Disposed of by Sale [Member] | Three Natural Gas Pipelines |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of Natural Gas Pipelines Facilities | basisPoint | 3 |  |  | 3 |  |  | 3 |  |  |  |
Number of Pipeline Facilities NEER Will Continue to Operate | basisPoint | 2 |  |  | 2 |  |  | 2 |  |  |  |
Subsidiaries of NextEra Energy Resources | NEP | United States, Geographically Dispersed | Disposed of by Sale [Member] | Five wind generation facilities and three solar facilities located in multiple regions |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership percentage sold |  |  |  |  |  | 100.00% |  |  |  |  |
Subsidiaries of NextEra Energy Resources | Pipeline Joint Venture | Disposed of by Sale [Member] | Three Natural Gas Pipelines |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity method investment, percentage sold | 15.00% |  |  | 15.00% |  |  | 15.00% |  |  |  |
Subsidiaries of NextEra Energy Resources | Pipeline Joint Venture | Disposed of by Sale [Member] | Three Natural Gas Pipelines and Certain Oil and Gas Shale Formations | Pipeline Joint Venture |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage | 85.00% |  |  | 85.00% |  |  | 85.00% |  |  |  |
Subsidiaries of NextEra Energy Resources | Nitro Joint Venture | Disposed of by Sale [Member] | Portfolio of Wind and Solar Generation Facilities |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity method investment, percentage sold | 65.00% |  |  | 65.00% |  |  | 65.00% |  |  |  |
Subsidiaries of NextEra Energy Resources | Nitro Joint Venture | Disposed of by Sale [Member] | Portfolio of Wind and Solar Generation Facilities | Renewable Assets Joint Venture |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage | 35.00% |  |  | 35.00% |  |  | 35.00% |  |  |  |

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