Equity (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Reconciliation of basic and diluted earnings per share of common stock [Abstract]
Net income attributable to NEE - basic	$ 833	$ 2,268
Denominator:
Weighted-average number of common shares outstanding – basic	2,055.5	2,051.5
Equity units, stock options, performance share awards, restricted stock and exchangeable notes	5.2	3.7
Weighted-average number of common shares outstanding – assuming dilution	2,060.7	2,055.2
Earnings per share attributable to NEE:
Basic (in dollars per share)	$ 0.41	$ 1.11
Assuming dilution (in dollars per share)	$ 0.40	$ 1.10