Segment Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Deemed capital structure of NextEra Energy Resources		70.00%		70.00%
OPERATING REVENUES		$ 4,954	$ 4,654	$ 13,417	$ 12,357
Operating expenses		3,473	3,491	9,660	9,504
Net income (loss) attributable to NEE		879	660	2,245	1,581
Total assets		79,963		79,963		$ 74,929
NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues		1,585	1,242	4,310	3,312
Operating expenses		972	935	2,915	2,782
Net income (loss) attributable to NEE		375	204	927	371
Total assets		35,559		35,559		32,919
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues		95	97	295	306
Operating expenses		82	75	236	231
Net income (loss) attributable to NEE		15	(6)	35	(21)
Total assets		2,502		2,502		2,703
FPL [Member]
Segment Reporting Information [Line Items]
OPERATING REVENUES		3,274	3,315	8,812	8,739
Operating expenses		2,419	2,481	6,509	6,491
Net income (loss) attributable to NEE	[1]	489	462	1,283	1,231
Total assets		41,902		41,902		$ 39,307
FPL [Member] | Subsegments [Domain]
Segment Reporting Information [Line Items]
Operating expenses		2,419	2,481	6,509	6,491
Net income (loss) attributable to NEE		$ 489	$ 462	$ 1,283	$ 1,231

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