Debt - Long-term Debt Issuances and Borrowings (Details) - NextEra Energy Capital Holdings, Inc.	3 Months Ended
	Mar. 31, 2024 USD ($)
Debentures – fixed
Debt Instrument [Line Items]
Principal amount	$ 3,800,000,000
Debentures – fixed | Minimum
Debt Instrument [Line Items]
Interest Rate (as a percent)	4.90%
Debentures – fixed | Maximum
Debt Instrument [Line Items]
Interest Rate (as a percent)	5.55%
Debentures variable
Debt Instrument [Line Items]
Principal amount	$ 600,000,000
Interest Rate Terms	Variable
Junior Subordinated Debt
Debt Instrument [Line Items]
Principal amount	$ 1,000,000,000
Interest Rate (as a percent)	6.70%
Exchangeable Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 1,000,000,000
Interest Rate (as a percent)	3.00%
Canadian Dollar Denominated Debentures
Debt Instrument [Line Items]
Principal amount	$ 744,000,000
Interest Rate (as a percent)	4.85%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal amount	$ 700,000,000
Interest Rate Terms	Variable