Segment Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Deemed capital structure of NextEra Energy Resources		70.00%		70.00%
OPERATING REVENUES		$ 4,805	$ 4,954	$ 12,457	$ 13,417
Operating expenses		3,526	3,473	8,775	9,660
Net income (loss) attributable to NEE		753	879	1,946	2,245
Total assets		87,864		87,864		$ 82,479
NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues		1,430	1,586	3,841	4,315
Operating expenses		974	972	2,575	2,918
Net income (loss) attributable to NEE		307	379	765	936
Total assets		40,760		40,760		37,647
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues		92	94	279	290
Operating expenses		190	82	326	233
Net income (loss) attributable to NEE		(69)	11	(175)	26
Total assets		2,487		2,487		2,309
FPL [Member]
Segment Reporting Information [Line Items]
OPERATING REVENUES		3,283	3,274	8,337	8,812
Operating expenses		2,362	2,419	5,874	6,509
Net income (loss) attributable to NEE	[1]	515	489	1,356	1,283
Total assets		44,617		44,617		$ 42,523
FPL [Member] | Subsegments [Domain]
Segment Reporting Information [Line Items]
Operating expenses		2,362	2,419	5,874	6,509
Net income (loss) attributable to NEE		$ 515	$ 489	$ 1,356	$ 1,283

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