CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
NET INCOME	$ 804	$ 544	$ 2,395	$ 1,198
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 $1, $10, $4 and $23 tax expense, respectively)	5	13	14	36
Net unrealized gains (losses) on available for sale securities:
Net unrealized gains on securities still held (net of $19, $12, $45 and $19 tax expense, respectively)	26	17	60	25
Reclassification from accumulated other comprehensive loss to net income (net of $1, $3, $11 and $4 tax benefit, respectively)	(1)	(5)	(17)	(6)
Defined benefit pension and other benefits plans (net of $6 and $4 tax expense and $4 tax benefit, respectively)	10	0	7	(7)
Net unrealized gains on foreign currency translation (net of less than $1 tax expense for all periods)	5	8	21	28
Other comprehensive loss related to equity method investee (net of less than $1, $1 and $3 tax benefit, respectively)	(1)	(1)	0	(4)
Total other comprehensive income, net of tax	44	32	85	72
COMPREHENSIVE INCOME	848	576	2,480	1,270
LESS COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTERESTS	12	5	31	(8)
COMPREHENSIVE INCOME ATTRIBUTABLE TO NEE	$ 836	$ 571	$ 2,449	$ 1,278