Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Operating revenues	$ 4,785	$ 5,572	$ 13,602	$ 14,616
Operating expenses - net	3,777	3,979	9,426	10,140
Net income (loss) attributable to NEE	1,229	879	2,924	2,794
Net Income	$ 1,123	798	$ 2,559	2,544
Deemed capital structure of NextEra Energy Resources	70.00%		70.00%
Total assets	$ 126,382		$ 126,382		$ 117,691
Operating Segments [Member] | FPL [Member]
Segment Reporting Information [Line Items]
Operating revenues	3,455	3,491	8,820	9,267
Operating expenses - net	2,395	2,518	5,779	6,582
Net income (loss) attributable to NEE	757	683		1,934
Net Income			2,148
Total assets	60,503		60,503		57,188
Operating Segments [Member] | Gulf Power [Member]
Segment Reporting Information [Line Items]
Operating revenues	404	440	1,065	1,134
Operating expenses - net	289	332	817	901
Net income (loss) attributable to NEE	91	76
Net Income			185	158
Total assets	6,679		6,679		5,855
Operating Segments [Member] | NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues	953	1,675	3,802	4,301
Operating expenses - net	1,026	1,117	2,706	2,579
Net income (loss) attributable to NEE	376	381	1,175	1,374
Total assets	54,961		54,961		51,516
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	(27)	(34)	(85)	(86)
Operating expenses - net	67	12	124	78
Net income (loss) attributable to NEE	5	$ (261)	(584)	$ (672)
Total assets	$ 4,239		$ 4,239		$ 3,132