NEP (Summarized Financial Information) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Schedule of Investments [Line Items]
Operating revenues	$ 4,204	$ 4,970	$ 8,817	$ 9,044
Operating Income	1,186	1,747	3,167	2,882
Net Income	1,129	1,139	1,436	1,745
Net income (loss) attributable to NEE	$ 1,275	$ 1,234	1,695	1,914
NextEra Energy Partners [Member]
Schedule of Investments [Line Items]
Operating revenues			465	397
Operating Income			138	103
Net Income			(593)	(244)
Net income (loss) attributable to NEE			$ (176)	$ (49)