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Debt (Narrative) (Details) - USD ($) |  |  | 1 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 31, 2024 | Sep. 01, 2022 | Jan. 31, 2024 | Sep. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Feb. 16, 2024 | Dec. 31, 2023 | Aug. 31, 2023 | Dec. 31, 2022 | Aug. 31, 2022
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Weighted-average interest rate of commercial paper and short-tem borrowings (in hundredths) |  |  |  |  |  |  |  | 5.62% |  | 4.58% |
Line of Credit Facility, Fair Value of Amount Outstanding |  |  |  |  |  |  |  | $ (255,000,000) |  |  |
Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity, issuance of letters of credit |  |  |  |  |  |  |  | 19,600,000,000 |  |  |
Line of Credit Facility, Fair Value of Letters Of Credit Outstanding |  |  |  |  |  |  |  | $ 3,400,000,000 |  |  |
Line of Credit [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Increase In Maximum Borrowing Capacity, Issuance of Letters of Credit |  |  |  |  |  |  | $ 900,000,000 |  |  |  |
Line of Credit Facility, Increase In Fair Value of Amount Outstanding |  |  |  |  |  |  | 1,650,000,000 |  |  |  |
Debentures [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount of Debentures Sold | $ 3,800,000,000 |  |  |  |  |  |  |  |  |  |
Debentures [Member] | Minimum [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |
Interest rate | 4.90% |  | 4.90% |  |  |  |  |  |  |  |
Debentures [Member] | Maximum [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |
Interest rate | 5.55% |  | 5.55% |  |  |  |  |  |  |  |
Floating Rate Debentures | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount of Debentures Sold | $ 600,000,000 |  |  |  |  |  |  |  |  |  |
FPL [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Weighted-average interest rate of commercial paper and short-tem borrowings (in hundredths) |  |  |  |  |  |  |  | 5.50% |  | 4.41% |
Line of Credit Facility, Fair Value of Amount Outstanding |  |  |  |  |  |  |  | $ (255,000,000) |  |  |
FPL [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Capital Contributions Received | $ 3,400,000,000 |  | $ 3,400,000,000 |  |  |  |  |  |  |  |
FPL [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity, issuance of letters of credit |  |  |  |  |  |  |  | 4,000,000,000 |  |  |
Line of Credit Facility, Fair Value of Letters Of Credit Outstanding |  |  |  |  |  |  |  | $ 3,000,000 |  |  |
FPL [Member] | Line of Credit [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Increase In Maximum Borrowing Capacity, Issuance of Letters of Credit |  |  |  |  |  |  | 500,000,000 |  |  |  |
Line of Credit Facility, Increase In Fair Value of Amount Outstanding |  |  |  |  |  |  | $ 0 |  |  |  |
FPL [Member] | Senior Unsecured Notes | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Repayment Of Commercial Paper And Senior Unsecured Notes |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |
NEE Equity Units September 2022 |  |  |  |  |  |  |  |  |  |  |
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) |  |  |  |  |  |  |  | 0.5640 |  |  |
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) |  |  |  |  |  |  |  | 0.4512 |  |  |
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% |  |  |
Interest rate |  |  |  |  |  |  |  | 4.60% |  |  |
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 |  |  |
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
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |
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 |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  | 5.749% |  |
September 2019 Equity Units |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |
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] |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |
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] |  |  |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |  |  |
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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