Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Operating revenues	$ 4,613	$ 4,075
Operating expenses - net	2,632	2,940
Net income (loss) attributable to NEE	421	680
Net Income	$ 308	606
Deemed capital structure of NextEra Energy Resources	70.00%
Total assets	$ 120,637		$ 117,691
Operating Segments [Member] | FPL [Member]
Segment Reporting Information [Line Items]
Operating revenues	2,540	2,618
Operating expenses - net	1,625	1,761
Net income (loss) attributable to NEE		588
Net Income	642
Total assets	58,317		57,188
Operating Segments [Member] | Gulf Power [Member]
Segment Reporting Information [Line Items]
Operating revenues	328	328
Operating expenses - net	270	271
Net Income	40	37
Total assets	6,240		5,855
Operating Segments [Member] | NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,773	1,161
Operating expenses - net	706	865
Net income (loss) attributable to NEE	318	321
Total assets	51,455		51,516
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	(28)	(32)
Operating expenses - net	31	43
Net income (loss) attributable to NEE	(579)	$ (266)
Total assets	$ 4,625		$ 3,132