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Debt (Narrative) (Details) - USD ($) |  | 1 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 01, 2022 | Sep. 30, 2022 | Sep. 30, 2020 | Feb. 29, 2020 | Feb. 17, 2023 | Feb. 09, 2023 | Dec. 31, 2022 | Aug. 31, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Weighted-average interest rate of commercial paper and short-tem borrowings (in hundredths) |  |  |  |  |  |  | 4.58% |  | 0.39%
Line of Credit Facility, Fair Value of Amount Outstanding |  |  |  |  |  |  | $ 0 |  |
Line of Credit [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity, issuance of letters of credit |  |  |  |  |  |  | 17,900,000,000 |  |
Line of Credit Facility, Fair Value of Letters Of Credit Outstanding |  |  |  |  |  |  | $ 3,700,000,000 |  |
Line of Credit [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity, issuance of letters of credit |  |  |  |  | $ 20,200,000,000 |  |  |  |
FPL [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Weighted-average interest rate of commercial paper and short-tem borrowings (in hundredths) |  |  |  |  |  |  | 4.41% |  | 0.27%
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 |  |  |  |  |  |  | $ 3,000,000 |  |
FPL [Member] | Line of Credit [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity, issuance of letters of credit |  |  |  |  | $ 4,100,000,000 |  |  |  |
NextEra Energy Capital Holdings, Inc. [Member] | Debentures [Member] | Subsequent Event |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 4,000,000,000 |  |  |
NextEra Energy Capital Holdings, Inc. [Member] | Debentures [Member] | Minimum [Member] | Subsequent Event |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 4.90% |  |  |
NextEra Energy Capital Holdings, Inc. [Member] | Debentures [Member] | Maximum [Member] | Subsequent Event |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 5.25% |  |  |
NEE Equity Units February 2020 [Member] |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |
Amount of equity units sold |  |  |  | $ 2,500,000,000 |  |  |  |  |
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) |  |  |  |  |  |  | 0.7132 |  |
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) |  |  |  |  |  |  | 0.5703 |  |
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) |  |  |  |  |  |  | 5.279% |  |
Interest rate |  |  |  |  |  |  | 1.84% |  |
Rate of payments on stock purchase contracts (in hundredths) |  |  |  |  |  |  | 3.439% |  |
NEE Equity Units February 2020 [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |
The Adjusted Reference Price (in dollars per share) |  |  |  |  |  |  | $ 70.39 |  |
NEE Equity Units February 2020 [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |
Adjusted Threshold Appreciation Price |  |  |  |  |  |  | $ 87.99 |  |
NEE Equity Units September 2020 [Member] |  |  |  |  |  |  |  |  |
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) |  |  |  |  |  |  | 0.6802 |  |
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) |  |  |  |  |  |  | 0.5442 |  |
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) |  |  |  |  |  |  | 6.219% |  |
Interest rate |  |  |  |  |  |  | 0.509% |  |
Rate of payments on stock purchase contracts (in hundredths) |  |  |  |  |  |  | 5.71% |  |
NEE Equity Units September 2020 [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |
The Adjusted Reference Price (in dollars per share) |  |  |  |  |  |  | $ 73.79 |  |
NEE Equity Units September 2020 [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Sale of equity units [Abstract] |  |  |  |  |  |  |  |  |
Adjusted Threshold Appreciation Price |  |  |  |  |  |  | $ 92.24 |  |
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) |  |  |  |  |  |  | 0.5626 |  |
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) |  |  |  |  |  |  | 0.4500 |  |
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% |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |

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