Equity (Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of basic and diluted earnings per share of common stock [Abstract]
Net income (loss) attributable to NEE	$ 6,946	$ 7,310	$ 4,147
Denominator:
Weighted-average number of common shares outstanding – basic	2,052,900,000	2,026,100,000	1,972,600,000
Equity units, stock options, performance share awards, forward sale agreements and restricted stock	6,300,000	4,700,000	6,000,000.0
Weighted-average number of common shares outstanding – assuming dilution	2,059,200,000	2,030,800,000	1,978,600,000
Earnings per share attributable to NEE:
Basic	$ 3.38	$ 3.61	$ 2.10
Assuming dilution	$ 3.37	$ 3.60	$ 2.10
Antidilutive securities (in shares)	33,900,000	39,100,000	38,100,000