Equity (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Reconciliation of basic and diluted earnings per share of common stock [Abstract]
Net income attributable to NEE - basic	$ 2,028	$ 1,622	$ 2,862	$ 3,890
Denominator:
Weighted-average number of common shares outstanding – basic	2,056.7	2,052.5	2,056.1	2,052.0
Equity units, stock options, performance share awards, restricted stock and exchangeable notes	4.6	5.7	4.9	4.7
Weighted-average number of common shares outstanding – assuming dilution	2,061.3	2,058.2	2,061.0	2,056.7
Earnings per share attributable to NEE:
Basic (in dollars per share)	$ 0.99	$ 0.79	$ 1.39	$ 1.90
Assuming dilution (in dollars per share)	$ 0.98	$ 0.79	$ 1.39	$ 1.89