Equity (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Reconciliation of basic and diluted earnings per share of common stock [Abstract]
Net income attributable to NEE - basic	$ 2,268	$ 2,086
Denominator:
Weighted-average number of common shares outstanding – basic	2,051.5	1,999.9
Equity units, stock options, performance share awards and restricted stock	3.7	5.2
Weighted-average number of common shares outstanding – assuming dilution	2,055.2	2,005.1
Earnings per share attributable to NEE:
Basic (in dollars per share)	$ 1.11	$ 1.04
Assuming dilution (in dollars per share)	$ 1.10	$ 1.04