Segment Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Deemed capital structure of NextEra Energy Resources		70.00%
OPERATING REVENUES		$ 3,835	$ 4,104
Operating expenses		2,601	2,975
Net income attributable to NEE		636	650
Total assets		84,637		$ 82,479
NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues		1,441	1,462
Operating expenses		946	1,029
Net income attributable to NEE		224	280
Total assets		39,129		37,647
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues		91	101
Operating expenses		66	72
Net income attributable to NEE		19	11
Total assets		2,396		2,309
FPL [Member]
Segment Reporting Information [Line Items]
OPERATING REVENUES		2,303	2,541
Operating expenses		1,589	1,874
Net income attributable to NEE	[1]	393	359
Total assets		43,112		$ 42,523
FPL [Member] | Subsegments [Domain]
Segment Reporting Information [Line Items]
Operating expenses		1,589	1,874
Net income attributable to NEE		$ 393	$ 359

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