Equity (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Reconciliation of basic and diluted earnings per share of common stock [Abstract]
Net income attributable to NEE - basic	$ 1,852	$ 1,219	$ 5,743	$ 6,100
Denominator:
Weighted-average number of common shares outstanding – basic	2,053.5	2,031.3	2,052.5	2,017.8
Equity units, stock options, performance share awards and restricted stock	7.9	4.9	5.8	5.2
Weighted-average number of common shares outstanding – assuming dilution	2,061.4	2,036.2	2,058.3	2,023.0
Earnings per share attributable to NEE:
Basic (in dollars per share)	$ 0.90	$ 0.60	$ 2.80	$ 3.02
Assuming dilution (in dollars per share)	$ 0.90	$ 0.60	$ 2.79	$ 3.02