Segment Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) segment	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment			2
Operating revenues	$ 7,966	$ 7,567	$ 20,912	$ 19,368
Fuel, purchased power and interchange	1,423	1,451	3,771	3,937
Utilities Operating Expense, Maintenance and Operations	1,410	1,247	3,803	3,541
Depreciation and amortization	2,096	1,642	4,964	3,949
Taxes other than income taxes and other – net	653	602	1,877	1,721
Interest Expense Aggregate Expenses	1,153	1,817	3,987	2,960
INCOME TAX EXPENSE (BENEFIT)	(250)	5	(1,027)	168
Net income attributable to NEE	$ 2,438	$ 1,852	$ 5,300	$ 5,743
Deemed capital structure of NextEra Energy Resources	70.00%	70.00%	70.00%	70.00%
Gains (losses) on disposal of businesses/assets – net	$ 143	$ 231	$ 197	$ 318
Equity in earnings (losses) of equity method investees	204	237	(266)	599
Net loss attributable to noncontrolling interests	303	261	1,061	918
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases			19,328	20,108
Property, plant and equipment – net	150,043		150,043		$ 138,852
Total assets	204,354		204,354		190,144
Investment in equity method investees	5,451		5,451		6,118
Florida Power & Light Company
Segment Reporting Information [Line Items]
Operating revenues	5,285	4,939	13,989	13,163
Fuel, purchased power and interchange	1,124	1,208	3,006	3,322
Utilities Operating Expense, Maintenance and Operations	432	417	1,254	1,171
Depreciation and amortization	1,385	974	2,873	1,971
Taxes other than income taxes and other – net	547	511	1,543	1,455
Interest Expense Aggregate Expenses	320	304	964	874
INCOME TAX EXPENSE (BENEFIT)	52	277	431	813
Electric utility plant and other property – net	80,519		80,519		76,166
Total assets	103,614		103,614		98,141
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	7,851	7,524	20,632	19,257
Net income attributable to NEE	2,738	2,516	6,484	6,439
Equity in earnings (losses) of equity method investees	195	237	(275)	578
Net loss attributable to noncontrolling interests	303	261	1,061	918
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases			19,323	19,991
Property, plant and equipment – net	149,879		149,879		138,692
Total assets	201,260		201,260		187,539
Investment in equity method investees	5,438		5,438		6,118
Operating Segments [Member] | Florida Power & Light Company
Segment Reporting Information [Line Items]
Operating revenues	5,285	4,939
Net income attributable to NEE	1,463	1,293
Equity in earnings (losses) of equity method investees	0	0	0	0
Net loss attributable to noncontrolling interests	0	0	0	0
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases			6,859	6,409
Electric utility plant and other property – net	80,519		80,519		76,166
Total assets	103,614		103,614		98,141
Investment in equity method investees	0		0		0
Operating Segments [Member] | Florida Power & Light Company | Florida Power & Light Company
Segment Reporting Information [Line Items]
Operating revenues			13,989	13,163
Fuel, purchased power and interchange	1,124	1,208	3,006	3,322
Utilities Operating Expense, Maintenance and Operations	432	417	1,254	1,171
Depreciation and amortization	1,385	974	2,873	1,971
Taxes other than income taxes and other – net	547	511	1,544	1,455
Interest Expense Aggregate Expenses	320	304	964	874
INCOME TAX EXPENSE (BENEFIT)	52	277	431	813
Segment Reporting, Other Segment Item, Amount	38	45	137	141
Net income attributable to NEE	1,463	1,293	4,054	3,698
Operating Segments [Member] | NEER Segment
Segment Reporting Information [Line Items]
Operating revenues	2,566	2,585	6,643	6,094
Fuel, purchased power and interchange	299	268	766	688
Utilities Operating Expense, Maintenance and Operations	810	706	2,126	2,055
Depreciation and amortization	695	653	2,043	1,935
Taxes other than income taxes and other – net	103	88	328	262
Interest Expense Aggregate Expenses	405	597	1,367	1,067
INCOME TAX EXPENSE (BENEFIT)	(205)	(37)	(1,073)	(397)
Segment Reporting, Other Segment Item, Amount	816	913	1,344	2,257
Net income attributable to NEE	1,275	1,223	2,430	2,741
Equity in earnings (losses) of equity method investees	195	237	(275)	578
Net loss attributable to noncontrolling interests	303	261	1,061	918
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases			12,464	13,582
Property, plant and equipment – net	69,360		69,360		62,526
Total assets	97,646		97,646		89,398
Investment in equity method investees	5,438		5,438		6,118
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	115	43	280	111
Net income attributable to NEE	(300)	(664)	(1,184)	(696)
Equity in earnings (losses) of equity method investees	9	0	9	21
Net loss attributable to noncontrolling interests	0	$ 0	0	0
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases			5	$ 117
Property, plant and equipment – net	164		164		160
Total assets	3,094		3,094		2,605
Investment in equity method investees	$ 13		$ 13		$ 0