Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Operating revenues	$ 2,890	$ 3,726
Operating expenses – net	3,688	3,071
Gains (losses) on disposal of businesses/assets – net	23	14
Net loss attributable to noncontrolling interests	242	168
Net income (loss) attributable to NEE	(451)	1,666
Net Income	$ (693)	1,498
Deemed capital structure of NextEra Energy Resources	70.00%
Total assets	$ 144,945		$ 140,912
Operating Segments [Member] | FPL Segment
Segment Reporting Information [Line Items]
Operating revenues	3,712	2,970
Operating expenses – net	2,469	1,856
Gains (losses) on disposal of businesses/assets – net	0	0
Net loss attributable to noncontrolling interests	0	0
Net income (loss) attributable to NEE	875	777
Total assets	79,090		78,067
Operating Segments [Member] | NEER Segment
Segment Reporting Information [Line Items]
Operating revenues	(800)	781
Operating expenses – net	1,168	1,172
Gains (losses) on disposal of businesses/assets – net	25	18
Net loss attributable to noncontrolling interests	242	168
Net income (loss) attributable to NEE	(1,499)	491
Total assets	64,033		62,113
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	(22)	(25)
Operating expenses – net	51	43
Gains (losses) on disposal of businesses/assets – net	(2)	(4)
Net loss attributable to noncontrolling interests	0	0
Net income (loss) attributable to NEE	173	$ 398
Total assets	$ 1,822		$ 732