CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	[1]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
NET INCOME	$ 1,591	$ 654
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX
Reclassification of unrealized losses on cash flow hedges from accumulated other comprehensive loss to net income (net of $4 and $13 tax expense, respectively)	9	23
Net unrealized gains (losses) on available for sale securities:
Net unrealized gains on securities still held (net of $26 and $7 tax expense, respectively)	34	8
Reclassification from accumulated other comprehensive loss to net income (net of $10 and $1 tax benefit, respectively)	(16)	(1)
Defined benefit pension and other benefits plans (net of $2 and $4 tax benefit, respectively)	(3)	(7)
Net unrealized gains on foreign currency translation (net of less than $1 and less than $1 tax expense, respectively)	16	20
Other comprehensive income (loss) related to equity method investee (net of less than $1 tax expense and $2 tax benefit, respectively)	1	(3)
Total other comprehensive income, net of tax	41	40
COMPREHENSIVE INCOME	1,632	694
LESS COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTERESTS	19	(13)
COMPREHENSIVE INCOME ATTRIBUTABLE TO NEE	$ 1,613	$ 707

[1] Amounts have been retrospectively adjusted. See Note 7 - Stock-Based Compensation.