Segment Information (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Deemed capital structure of NextEra Energy Resources		70.00%		70.00%
OPERATING REVENUES		$ 4,358	$ 4,029	$ 8,463	$ 7,703
Operating expenses		3,212	3,078	6,187	6,013
Net income (loss) attributable to NEE		716	492	1,366	921
Total assets		77,201		77,201		$ 74,929
NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues		1,265	1,036	2,725	2,069
Operating expenses		916	896	1,943	1,846
Net income (loss) attributable to NEE		273	81	552	167
Total assets		34,333		34,333		32,919
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues		97	104	200	210
Operating expenses		80	75	153	157
Net income (loss) attributable to NEE		8	(12)	20	(16)
Total assets		2,579		2,579		2,703
FPL [Member]
Segment Reporting Information [Line Items]
OPERATING REVENUES		2,996	2,889	5,538	5,424
Operating expenses		2,216	2,107	4,091	4,010
Net income (loss) attributable to NEE	[1]	435	423	794	770
Total assets		40,289		40,289		$ 39,307
FPL [Member] | Subsegments [Domain]
Segment Reporting Information [Line Items]
Operating expenses		2,216	2,107	4,091	4,010
Net income (loss) attributable to NEE		$ 435	$ 423	$ 794	$ 770

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