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Debt - Narrative (Details) - USD ($) | 1 Months Ended |
--- | --- | ---
Sep. 30, 2020 | Feb. 29, 2020 | Oct. 24, 2020
NEE Equity Units February 2020 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
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) | 0.1773 |  |
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) | 0.1418 |  |
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% |  |
Rate of payments on stock purchase contracts (in hundredths) | 3.439% |  |
Interest rate (as a percent) | 1.84% |  |
NEE Equity Units September 2020 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Amount of equity units sold | $ 2,000,000,000.0 |  |
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) | 0.1691 |  |
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) | 0.1353 |  |
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% |  |
Rate of payments on stock purchase contracts (in hundredths) | 5.71% |  |
Interest rate (as a percent) | 0.509% |  |
Minimum [Member] | NEE Equity Units February 2020 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Price per share of stock purchase contract (in dollars per share) | $ 282.04 | $ 282.04 |
Minimum [Member] | NEE Equity Units September 2020 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Price per share of stock purchase contract (in dollars per share) | 295.70 |  |
Maximum [Member] | NEE Equity Units February 2020 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Price per share of stock purchase contract (in dollars per share) | 352.55 | $ 352.55 |
Maximum [Member] | NEE Equity Units September 2020 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Price per share of stock purchase contract (in dollars per share) | $ 369.63 |  |
NextEra Energy Capital Holdings, Inc. [Member] | Series I Junior Subordinated Debentures due 2072 [Member] | Forecast [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate (as a percent) |  |  | 5.125%
Debt redeemed |  |  | $ 500,000,000
NextEra Energy Capital Holdings, Inc. [Member] | Series J Junior Subordinated Debentures due 2073 [Member] | Forecast [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate (as a percent) |  |  | 5.00%
Debt redeemed |  |  | $ 450,000,000
NextEra Energy Capital Holdings, Inc. [Member] | Minimum [Member] | Debentures Related To Nextera Energys Equity Units [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate (as a percent) | 0.509% |  |
NextEra Energy Capital Holdings, Inc. [Member] | Maximum [Member] | Debentures Related To Nextera Energys Equity Units [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate (as a percent) | 1.84% |  |

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