Segment Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2025 USD ($) segment	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment	2
Operating revenues	$ 6,247	$ 5,731
Fuel, purchased power and interchange	1,165	1,206
Utilities Operating Expense, Maintenance and Operations	1,173	1,123
Depreciation and amortization	1,095	898
Taxes other than income taxes and other – net	594	549
Interest Expense Aggregate Expenses	1,774	323
INCOME TAX EXPENSE (BENEFIT)	(521)	227
Net income attributable to NEE	$ 833	$ 2,268
Deemed capital structure of NextEra Energy Resources	70.00%	70.00%
Gains (losses) on disposal of businesses/assets – net	$ 36	$ 58
Equity in earnings (losses) of equity method investees	(646)	203
Net loss attributable to noncontrolling interests	369	331
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases	7,942	9,711
Property, plant and equipment – net	142,223		$ 138,852
Total assets	194,264		190,144
Investment in equity method investees	5,270		6,118
Florida Power & Light Company
Segment Reporting Information [Line Items]
Operating revenues	3,997	3,834
Fuel, purchased power and interchange	936	1,034
Utilities Operating Expense, Maintenance and Operations	379	361
Depreciation and amortization	408	303
Taxes other than income taxes and other – net	475	460
Interest Expense Aggregate Expenses	317	279
INCOME TAX EXPENSE (BENEFIT)	215	279
Electric utility plant and other property – net	77,427		76,166
Total assets	100,064		98,141
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	6,160	5,698
Net income attributable to NEE	1,488	2,138
Equity in earnings (losses) of equity method investees	(646)	183
Net loss attributable to noncontrolling interests	369	331
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases	7,935	9,620
Property, plant and equipment – net	142,060		138,692
Total assets	191,695		187,539
Investment in equity method investees	5,270		6,118
Operating Segments [Member] | Florida Power & Light Company
Segment Reporting Information [Line Items]
Equity in earnings (losses) of equity method investees	0	0
Net loss attributable to noncontrolling interests	0	0
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases	2,392	2,345
Electric utility plant and other property – net	77,427		76,166
Total assets	100,064		98,141
Investment in equity method investees	0		0
Operating Segments [Member] | Florida Power & Light Company | Florida Power & Light Company
Segment Reporting Information [Line Items]
Operating revenues	3,997	3,834
Fuel, purchased power and interchange	936	1,034
Utilities Operating Expense, Maintenance and Operations	379	361
Depreciation and amortization	408	303
Taxes other than income taxes and other – net	475	460
Interest Expense Aggregate Expenses	317	279
INCOME TAX EXPENSE (BENEFIT)	215	279
Segment Reporting, Other Segment Item, Amount	49	54
Net income attributable to NEE	1,316	1,172
Operating Segments [Member] | NEER Segment
Segment Reporting Information [Line Items]
Operating revenues	2,163	1,864
Fuel, purchased power and interchange	229	196
Utilities Operating Expense, Maintenance and Operations	659	692
Depreciation and amortization	671	579
Taxes other than income taxes and other – net	119	89
Interest Expense Aggregate Expenses	548	173
INCOME TAX EXPENSE (BENEFIT)	(515)	(97)
Segment Reporting, Other Segment Item, Amount	(280)	734
Net income attributable to NEE	172	966
Equity in earnings (losses) of equity method investees	(646)	183
Net loss attributable to noncontrolling interests	369	331
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases	5,543	7,275
Property, plant and equipment – net	64,633		62,526
Total assets	91,631		89,398
Investment in equity method investees	5,270		6,118
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	87	33
Net income attributable to NEE	(655)	130
Equity in earnings (losses) of equity method investees	0	20
Net loss attributable to noncontrolling interests	0	0
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases	7	$ 91
Property, plant and equipment – net	163		160
Total assets	2,569		2,605
Investment in equity method investees	$ 0		$ 0