Debt - Narrative (Details) - USD ($) $ in Billions	2 Months Ended
	Sep. 30, 2025	Aug. 31, 2025
NEE Equity Units September 2022
Debt Instrument [Line Items]
Sale of stock, shares issued in transaction (in shares)	22.8
Sale of stock, consideration received	$ 2.0
Series M Debentures due 2027 | NextEra Energy Capital Holdings, Inc. | Debentures – fixed
Debt Instrument [Line Items]
Principal amount		$ 2.0
Interest Rate (as a percent)		4.685%