Debt - Narrative (Details) - USD ($)	1 Months Ended
	Feb. 29, 2020	Jun. 30, 2020
NEE Equity Units 2020 [Member]
Debt Instrument [Line Items]
Amount of equity units sold	$ 2,500,000,000
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)		0.1773
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)		0.1418
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)		5.279%
Rate of payments on stock purchase contracts (in hundredths)		3.439%
Minimum [Member] | NEE Equity Units 2020 [Member]
Debt Instrument [Line Items]
Price per share of stock purchase contract (in dollars per share)	$ 282.04	$ 282.04
Maximum [Member] | NEE Equity Units 2020 [Member]
Debt Instrument [Line Items]
Price per share of stock purchase contract (in dollars per share)	$ 352.55	$ 352.55
NextEra Energy Capital Holdings, Inc. [Member] | Debentures Related To Nextera Energys Equity Units [Member]
Debt Instrument [Line Items]
Interest rate (as a percent)		1.84%