Debt - Narrative (Details) - USD ($)	1 Months Ended	9 Months Ended
	Jun. 30, 2024	Sep. 30, 2024	Oct. 15, 2024	Mar. 31, 2024
NEE Equity Units June 2024
Debt Instrument [Line Items]
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%
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 thousandths)		7.299%
Rate of payments on stock purchase contracts (in thousandths)		2.149%
Interest Rate (as a percent)		5.15%
NEE Equity Units June 2024 | Minimum
Debt Instrument [Line Items]
Price per share of stock purchase contract (in dollars per share)		$ 72.31
NEE Equity Units June 2024 | Maximum
Debt Instrument [Line Items]
Price per share of stock purchase contract (in dollars per share)		$ 90.38
NextEra Energy Capital Holdings, Inc.
Debt Instrument [Line Items]
Proceeds from Convertible Debt		$ 52,000,000
Exchangeable Senior Notes | NextEra Energy Capital Holdings, Inc.
Debt Instrument [Line Items]
Principal amount		$ 1,000,000,000		$ 1,000,000,000
Debt Instrument, Convertible, Conversion Ratio		1.46927%
Share Price		$ 68.06
Initial Cap Price		$ 83.34
Interest Rate (as a percent)		3.00%
Senior Secured Limited Recourse Notes | NextEra Energy Resources
Debt Instrument [Line Items]
Principal amount		$ 363,000,000
Interest Rate (as a percent)		5.93%
Senior Secured Limited Recourse Notes | NextEra Energy Resources | Subsequent Event
Debt Instrument [Line Items]
Principal amount			$ 633,000,000
Interest Rate (as a percent)			5.74%