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