Segment Information (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Deemed capital structure of NextEra Energy Resources		70.00%		70.00%
OPERATING REVENUES		$ 3,817	$ 4,358	$ 7,651	$ 8,463
Operating expenses		2,648	3,212	5,248	6,187
Net income (loss) attributable to NEE		540	716	1,193	1,366
Total assets		85,420		85,420		$ 82,479
NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues		970	1,267	2,411	2,729
Operating expenses		654	917	1,600	1,946
Net income (loss) attributable to NEE		234	276	458	556
Total assets		39,052		39,052		37,647
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues		97	95	186	196
Operating expenses		72	79	136	150
Net income (loss) attributable to NEE		(142)	5	(106)	16
Total assets		2,498		2,498		2,309
FPL [Member]
Segment Reporting Information [Line Items]
OPERATING REVENUES		2,750	2,996	5,054	5,538
Operating expenses		1,922	2,216	3,512	4,091
Net income (loss) attributable to NEE	[1]	448	435	841	794
Total assets		43,870		43,870		$ 42,523
FPL [Member] | Subsegments [Domain]
Segment Reporting Information [Line Items]
Operating expenses		1,922	2,216	3,512	4,091
Net income (loss) attributable to NEE		$ 448	$ 435	$ 841	$ 794

[1] (a)FPL's comprehensive income is the same as reported net income.