CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
NET INCOME	$ 650	$ 430
Net unrealized gains (losses) on cash flow hedges:
Effective portion of net unrealized losses (net of $26 and $11 tax benefit, respectively)	(52)	(18)
Reclassification from accumulated other comprehensive income to net income (net of $4 and $5 tax expense, respectively)	18	9
Net unrealized gains (losses) on available for sale securities:
Net unrealized gains on securities still held (net of $9 and $10 tax expense, respectively)	12	13
Reclassification from accumulated other comprehensive income to net income (net of $7 and $15 tax benefit, respectively)	(10)	(25)
Defined benefit pension and other benefits plans (net of $10 tax benefit and $3 tax expense, respectively)	(16)	5
Net unrealized gains (losses) on foreign currency translation (net of $8 tax expense and $8 tax benefit, respectively)	14	(17)
Other comprehensive loss related to equity method investee (net of $1 and $1 tax benefit, respectively)	(2)	(2)
Total other comprehensive loss, net of tax	(36)	(35)
COMPREHENSIVE INCOME	614	395
LESS COMPREHENSIVE LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS	3	0
COMPREHENSIVE INCOME ATTRIBUTABLE TO NEE	$ 617	$ 395