Segment Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2026 USD ($) segment	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment	2
Operating revenues	$ 6,701	$ 6,247
Fuel, purchased power and interchange	1,329	1,165
Utilities Operating Expense, Maintenance and Operations	1,422	1,173
Depreciation and amortization	1,371	1,095
Taxes other than income taxes and other – net	628	594
Interest expense	1,287	1,774
INCOME TAX BENEFIT	(489)	(521)
Net income attributable to NEE	$ 2,182	$ 833
Deemed capital structure of NextEra Energy Resources	70.00%	70.00%
Gains (losses) on disposal of businesses/assets – net	$ 257	$ 36
Equity in earnings (losses) of equity method investees	171	(646)
Net loss attributable to noncontrolling interests	494	369
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases	11,062	7,942
Property, plant and equipment – net	162,361		$ 156,197
Total assets	221,424		212,721
Investment in equity method investees	5,989		5,528
Florida Power & Light Company
Segment Reporting Information [Line Items]
Operating revenues	4,271	3,997
Fuel, purchased power and interchange	992	936
Utilities Operating Expense, Maintenance and Operations	379	379
Depreciation and amortization	665	408
Taxes other than income taxes and other – net	505	475
Interest expense	338	317
INCOME TAX BENEFIT	(18)	215
Electric utility plant and other property – net	84,118		81,755
Total assets	108,645		105,158
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	6,582	6,160
Net income attributable to NEE	2,481	1,488
Equity in earnings (losses) of equity method investees	170	(646)
Net loss attributable to noncontrolling interests	494	369
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases	11,058	7,935
Property, plant and equipment – net	162,204		156,042
Total assets	217,541		208,686
Investment in equity method investees	5,969		5,509
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	3,162	2,392
Electric utility plant and other property – net	84,118		81,755
Total assets	108,645		105,158
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	4,271	3,997
Fuel, purchased power and interchange	992	936
Utilities Operating Expense, Maintenance and Operations	379	379
Depreciation and amortization	665	408
Taxes other than income taxes and other – net	506	475
Interest expense	338	317
INCOME TAX BENEFIT	(18)	215
Segment Reporting, Other Segment Item, Amount	53	49
Net income attributable to NEE	1,462	1,316
Operating Segments [Member] | NEER Segment
Segment Reporting Information [Line Items]
Operating revenues	2,311	2,163
Fuel, purchased power and interchange	337	229
Utilities Operating Expense, Maintenance and Operations	870	659
Depreciation and amortization	691	671
Taxes other than income taxes and other – net	120	119
Interest expense	501	548
INCOME TAX BENEFIT	(347)	(515)
Segment Reporting, Other Segment Item, Amount	880	(280)
Net income attributable to NEE	1,019	172
Equity in earnings (losses) of equity method investees	170	(646)
Net loss attributable to noncontrolling interests	494	369
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases	7,896	5,543
Property, plant and equipment – net	78,086		74,287
Total assets	108,896		103,528
Investment in equity method investees	5,969		5,509
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	119	87
Net income attributable to NEE	(299)	(655)
Equity in earnings (losses) of equity method investees	1	0
Net loss attributable to noncontrolling interests	0	0
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases	4	$ 7
Property, plant and equipment – net	157		155
Total assets	3,883		4,035
Investment in equity method investees	$ 20		$ 19