Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
Segment Reporting Information [Line Items]
Deemed capital structure of NextEra Energy Resources	70.00%
OPERATING REVENUES	$ 4,104		$ 3,674
Operating expenses	2,975		2,936
Net income (loss) attributable to NEE	650		430
Total assets	74,929				74,929
NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,460		1,034
Operating expenses	1,027		952
Net income (loss) attributable to NEE	278		86
Total assets	32,518				32,919
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	103		105
Operating expenses	74		81
Net income (loss) attributable to NEE	13		(3)
Total assets	2,858				2,703
FPL [Member]
Segment Reporting Information [Line Items]
OPERATING REVENUES	2,541		2,535
Operating expenses	1,874		1,903
Net income (loss) attributable to NEE	359	[1]	347	[1]
Total assets	39,553				39,307
FPL [Member] | Subsegments [Domain]
Segment Reporting Information [Line Items]
Operating expenses	1,874		1,903
Net income (loss) attributable to NEE	$ 359		$ 347

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