Debt - Long-term Debt Issuances and Borrowings (Details) - USD ($)	9 Months Ended
	Sep. 30, 2024	Mar. 31, 2024
NextEra Energy Capital Holdings, Inc. | Debentures – fixed
Debt Instrument [Line Items]
Principal amount	$ 3,800,000,000
NextEra Energy Capital Holdings, Inc. | Debentures – fixed | Minimum
Debt Instrument [Line Items]
Interest Rate (as a percent)	4.90%
NextEra Energy Capital Holdings, Inc. | Debentures – fixed | Maximum
Debt Instrument [Line Items]
Interest Rate (as a percent)	5.55%
NextEra Energy Capital Holdings, Inc. | Debentures variable
Debt Instrument [Line Items]
Principal amount	$ 600,000,000
Interest Rate Terms	Variable
NextEra Energy Capital Holdings, Inc. | Junior Subordinated Debt
Debt Instrument [Line Items]
Principal amount	$ 2,200,000,000
NextEra Energy Capital Holdings, Inc. | Junior Subordinated Debt | Minimum
Debt Instrument [Line Items]
Interest Rate (as a percent)	6.70%
NextEra Energy Capital Holdings, Inc. | Junior Subordinated Debt | Maximum
Debt Instrument [Line Items]
Interest Rate (as a percent)	6.75%
NextEra Energy Capital Holdings, Inc. | Exchangeable Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 1,000,000,000	$ 1,000,000,000
Interest Rate (as a percent)	3.00%
NextEra Energy Capital Holdings, Inc. | Canadian Dollar Denominated Debentures
Debt Instrument [Line Items]
Principal amount	$ 744,000,000
Interest Rate (as a percent)	4.85%
NextEra Energy Capital Holdings, Inc. | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal amount	$ 1,750,000,000
Interest Rate Terms	Variable
Repayments of Debt	$ 450,000,000
NextEra Energy Capital Holdings, Inc. | Debentures Related To Nextera Energys Equity Units [Member]
Debt Instrument [Line Items]
Principal amount	$ 2,000,000,000
Interest Rate (as a percent)	5.15%
Florida Power & Light Company | First mortgage bonds
Debt Instrument [Line Items]
Principal amount	$ 2,700,000,000
Florida Power & Light Company | First mortgage bonds | Minimum
Debt Instrument [Line Items]
Interest Rate (as a percent)	5.00%
Florida Power & Light Company | First mortgage bonds | Maximum
Debt Instrument [Line Items]
Interest Rate (as a percent)	5.60%
Florida Power & Light Company | Pollution Control Solid Waste Disposal and Industrial Development Revenue Bonds
Debt Instrument [Line Items]
Principal amount	$ 344,000,000
Interest Rate Terms	Variable
NextEra Energy Resources | Senior Secured Limited Recourse Notes
Debt Instrument [Line Items]
Principal amount	$ 363,000,000
Interest Rate (as a percent)	5.93%