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Debt (Narrative) (Details) - USD ($) |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 06, 2025 | Feb. 04, 2025 | Sep. 01, 2023 | Mar. 01, 2023 | Sep. 01, 2022 | Oct. 31, 2024 | Jun. 30, 2024 | Sep. 30, 2022 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Aug. 31, 2023 | Mar. 31, 2023 | Aug. 31, 2022
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average interest rate of commercial paper and short-tem borrowings (in hundredths) |  |  |  |  |  |  |  |  | 4.82% |  | 5.62% |  |  |
Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity, issuance of letters of credit |  |  |  |  |  |  |  |  | $ 22,300,000,000 |  |  |  |  |
Line of Credit Facility, Fair Value of Letters Of Credit Outstanding |  |  |  |  |  |  |  |  | $ 3,600,000,000 |  |  |  |  |
Debentures [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Debentures Sold |  | $ 4,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Debentures [Member] | Minimum [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  | 4.85% |  |  |  |  |  |  |  |  |  |  |  |
Debentures [Member] | Maximum [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  | 5.90% |  |  |  |  |  |  |  |  |  |  |  |
Floating Rate Debentures | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Debentures Sold |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |
FPL [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average interest rate of commercial paper and short-tem borrowings (in hundredths) |  |  |  |  |  |  |  |  | 4.59% |  | 5.50% |  |  |
FPL [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity, issuance of letters of credit |  |  |  |  |  |  |  |  | $ 4,500,000,000 |  |  |  |  |
Line of Credit Facility, Fair Value of Letters Of Credit Outstanding |  |  |  |  |  |  |  |  | 4,000,000.0 |  |  |  |  |
NextEra Energy Capital Holdings, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Convertible Debt |  |  |  |  |  |  |  |  | $ 52,000,000 |  |  |  |  |
NEE Equity Units September 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  | 4.60% |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of equity units sold |  |  |  |  |  |  |  | $ 2,000,000,000 |  |  |  |  |  |
Stated amount of each equity unit (in dollars per share) |  |  |  |  |  |  |  | $ 50 |  |  |  |  |  |
Undivided beneficial ownership interest per debenture (in hundredths) |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |
Principal amount of each debenture |  |  |  |  |  |  |  | $ 1,000 |  |  |  |  |  |
Number of shares (subject to antidilution adjustments) if purchased on final settlement date at less than or equal to low range threshold (in shares) |  |  |  |  |  |  |  |  | 0.5670 |  |  |  |  |
Number of shares (subject to antidilution adjustments) if purchased on the final settlement date at equal to or greater than high range threshold (in shares) |  |  |  |  |  |  |  |  | 0.4534 |  |  |  |  |
Trading period (in days) over which the market value is determined by reference to the average closing prices of the common stock |  |  |  |  |  |  |  | 20 days |  |  |  |  |  |
Rate of total annual distributions on equity units (in hundredths) |  |  |  |  |  |  |  |  | 6.926% |  |  |  |  |
Rate of payments on stock purchase contracts (in hundredths) |  |  |  |  |  |  |  |  | 2.326% |  |  |  |  |
NEE Equity Units September 2022 | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Adjusted Reference Price (in dollars per share) |  |  |  |  |  |  |  |  | $ 88.88 |  |  |  |  |
NEE Equity Units September 2022 | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted Threshold Appreciation Price |  |  |  |  |  |  |  |  | $ 111.10 |  |  |  |  |
NEE Equity Units June 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  | 5.15% |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of equity units sold |  |  |  |  |  |  | $ 2,000,000,000 |  |  |  |  |  |  |
Stated amount of each equity unit (in dollars per share) |  |  |  |  |  |  | $ 50 |  |  |  |  |  |  |
Undivided beneficial ownership interest per debenture (in hundredths) |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |
Principal amount of each debenture |  |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |
Number of shares (subject to antidilution adjustments) if purchased on final settlement date at less than or equal to low range threshold (in shares) |  |  |  |  |  |  |  |  | 0.6915 |  |  |  |  |
Number of shares (subject to antidilution adjustments) if purchased on the final settlement date at equal to or greater than high range threshold (in shares) |  |  |  |  |  |  |  |  | 0.5532 |  |  |  |  |
Trading period (in days) over which the market value is determined by reference to the average closing prices of the common stock |  |  |  |  |  |  | 20 days |  |  |  |  |  |  |
Rate of total annual distributions on equity units (in hundredths) |  |  |  |  |  |  |  |  | 7.299% |  |  |  |  |
Rate of payments on stock purchase contracts (in hundredths) |  |  |  |  |  |  |  |  | 2.149% |  |  |  |  |
NEE Equity Units June 2024 | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price Per Share of Stock Purchase Contract |  |  |  |  |  |  |  |  | $ 72.31 |  |  |  |  |
NEE Equity Units June 2024 | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price Per Share of Stock Purchase Contract |  |  |  |  |  |  |  |  | $ 90.38 |  |  |  |  |
NEE Equity Units October 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  | 4.635% |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of equity units sold |  |  |  |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |
Stated amount of each equity unit (in dollars per share) |  |  |  |  |  | $ 50 |  |  |  |  |  |  |  |
Undivided beneficial ownership interest per debenture (in hundredths) |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |
Principal amount of each debenture |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |  |
Number of shares (subject to antidilution adjustments) if purchased on final settlement date at less than or equal to low range threshold (in shares) |  |  |  |  |  |  |  |  | 0.6034 |  |  |  |  |
Number of shares (subject to antidilution adjustments) if purchased on the final settlement date at equal to or greater than high range threshold (in shares) |  |  |  |  |  |  |  |  | 0.4827 |  |  |  |  |
Trading period (in days) over which the market value is determined by reference to the average closing prices of the common stock |  |  |  |  |  | 20 days |  |  |  |  |  |  |  |
Rate of total annual distributions on equity units (in hundredths) |  |  |  |  |  |  |  |  | 7.234% |  |  |  |  |
Rate of payments on stock purchase contracts (in hundredths) |  |  |  |  |  |  |  |  | 2.599% |  |  |  |  |
NEE Equity Units October 2024 | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price Per Share of Stock Purchase Contract |  |  |  |  |  |  |  |  | $ 82.87 |  |  |  |  |
NEE Equity Units October 2024 | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price Per Share of Stock Purchase Contract |  |  |  |  |  |  |  |  | 103.58 |  |  |  |  |
Series J Debentures due 2024 | NextEra Energy Capital Holdings, Inc. [Member] | Debentures [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.255%
Series K Debentures due 2025 | NextEra Energy Capital Holdings, Inc. [Member] | Debentures [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,500,000,000 |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 6.051% |
Series L Debenture due 2025 | NextEra Energy Capital Holdings, Inc. [Member] | Debentures [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000,000 |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  | 5.749% |  |
Exchangeable Senior Notes | NextEra Energy Capital Holdings, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  | $ 1,000,000,000.0 |  |  |  |
Share Price |  |  |  |  |  |  |  |  | $ 68.06 |  |  |  |  |
Initial Cap Price |  |  |  |  |  |  |  |  | $ 83.34 |  |  |  |  |
Debt Instrument, Convertible, Conversion Ratio |  |  |  |  |  |  |  |  | 1.46927% |  |  |  |  |
Series S Junior Subordinated Debentures Due 2055 | Debentures [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 6.375% |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Debentures Sold | $ 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Series T Junior Subordinated Debentures Due 2055 | Debentures [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 6.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Debentures Sold | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Series S and Series T Junior Subordinated Debentures Due 2055 | Debentures [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Reset, Duration | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |
September 2019 Equity Units |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock, Number of Shares Issued in Transaction |  |  |  |  | 21,600,000 |  |  |  |  |  |  |  |  |
Sale of Stock, Consideration Received on Transaction |  |  |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |
NEE Equity Units February 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock, Number of Shares Issued in Transaction |  |  |  | 33,400,000 |  |  |  |  |  |  |  |  |  |
Sale of Stock, Consideration Received on Transaction |  |  |  | $ 2,500,000,000 |  |  |  |  |  |  |  |  |  |
NEE Equity Units September 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock, Number of Shares Issued in Transaction |  |  | 27,300,000 |  |  |  |  |  |  |  |  |  |  |
Sale of Stock, Consideration Received on Transaction |  |  | $ 2,000,000,000 |  |  |  |  |  |  |  |  |  |  |

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