CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	[2]	Sep. 30, 2019	Sep. 30, 2018	[2]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
NET INCOME	$ 798	$ 941	[1]	$ 2,544	$ 5,462	[3]
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX
Reclassification of unrealized losses on cash flow hedges from accumulated other comprehensive income (loss) to net income	6	7		24	21
Net unrealized gains (losses) on available for sale securities:
Net unrealized gains (losses) on securities still held	4	(2)		19	(11)
Reclassification from accumulated other comprehensive income (loss) to net income	(1)	0		0	0
Net unrealized gain (loss) and unrecognized prior service benefit (cost)	0	0		(53)	(1)
Reclassification from accumulated other comprehensive income (loss) to net income	(1)	(1)		(2)	(3)
Net unrealized gains (losses) on foreign currency translation	1	11		19	(9)
Other comprehensive income (loss) related to equity method investees	1	1		1	5
Total other comprehensive income, net of tax	10	16		8	2
IMPACT OF NEP DECONSOLIDATION	0	0		0	58
COMPREHENSIVE INCOME	808	957		2,552	5,522
COMPREHENSIVE LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS	81	64		250	754
COMPREHENSIVE INCOME ATTRIBUTABLE TO NEE	$ 889	$ 1,021		$ 2,802	$ 6,276

[1] Amounts have been retrospectively adjusted for an accounting standards update related to leases.

[2] Amounts have been retrospectively adjusted for an accounting standards update related to leases.

[3] Amounts have been retrospectively adjusted for an accounting standards update related to leases.