Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Operating revenues	$ 4,204	$ 4,970	$ 8,817	$ 9,044
Operating expenses - net	3,018	3,223	5,650	6,162
Net income (loss) attributable to NEE	1,275	1,234	1,695	1,914
Net Income	$ 1,129	1,139	$ 1,436	1,745
Deemed capital structure of NextEra Energy Resources	70.00%		70.00%
Total assets	$ 121,961		$ 121,961		$ 117,691
Operating Segments [Member] | FPL [Member]
Segment Reporting Information [Line Items]
Operating revenues	2,825	3,158	5,365	5,776
Operating expenses - net	1,760	2,304	3,385	4,064
Net income (loss) attributable to NEE	749	663		1,251
Net Income			1,391
Total assets	59,330		59,330		57,188
Operating Segments [Member] | Gulf Power [Member]
Segment Reporting Information [Line Items]
Operating revenues	333	366	660	694
Operating expenses - net	259	298	527	569
Net income (loss) attributable to NEE	55	45
Net Income			94	81
Total assets	6,145		6,145		5,855
Operating Segments [Member] | NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,077	1,465	2,849	2,626
Operating expenses - net	975	597	1,681	1,462
Net income (loss) attributable to NEE	481	672	799	993
Total assets	53,197		53,197		51,516
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	(31)	(19)	(57)	(52)
Operating expenses - net	24	24	57	67
Net income (loss) attributable to NEE	(10)	$ (146)	(589)	$ (411)
Total assets	$ 3,289		$ 3,289		$ 3,132