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