Equity (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Reconciliation of basic and diluted earnings per share of common stock [Abstract]
Net income attributable to NEE - basic	$ 1,622	$ 2,795	$ 3,890	$ 4,881
Denominator:
Weighted-average number of common shares outstanding – basic	2,052.5	2,022.0	2,052.0	2,011.0
Equity units, stock options, performance share awards and restricted stock	5.7	5.2	4.7	5.2
Weighted-average number of common shares outstanding – assuming dilution	2,058.2	2,027.2	2,056.7	2,016.2
Earnings per share attributable to NEE:
Basic (in dollars per share)	$ 0.79	$ 1.38	$ 1.90	$ 2.43
Assuming dilution (in dollars per share)	$ 0.79	$ 1.38	$ 1.89	$ 2.42