Segment Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) segment	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment			2
Operating revenues	$ 6,700	$ 6,069	$ 12,947	$ 11,801
Fuel, purchased power and interchange	1,184	1,280	2,348	2,486
Utilities Operating Expense, Maintenance and Operations	1,220	1,171	2,393	2,293
Depreciation and amortization	1,773	1,409	2,868	2,307
Taxes other than income taxes and other – net	630	568	1,225	1,120
Interest Expense Aggregate Expenses	1,060	820	2,834	1,143
INCOME TAX EXPENSE (BENEFIT)	(256)	(64)	(777)	163
Net income attributable to NEE	$ 2,028	$ 1,622	$ 2,862	$ 3,890
Deemed capital structure of NextEra Energy Resources	70.00%	70.00%	70.00%	70.00%
Gains (losses) on disposal of businesses/assets – net	$ 18	$ 29	$ 54	$ 87
Equity in earnings (losses) of equity method investees	177	159	(469)	362
Net loss attributable to noncontrolling interests	389	326	758	657
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases			13,626	14,634
Property, plant and equipment – net	145,742		145,742		$ 138,852
Total assets	198,830		198,830		190,144
Investment in equity method investees	5,401		5,401		6,118
Florida Power & Light Company
Segment Reporting Information [Line Items]
Operating revenues	4,708	4,389	8,705	8,224
Fuel, purchased power and interchange	946	1,081	1,881	2,115
Utilities Operating Expense, Maintenance and Operations	442	393	822	754
Depreciation and amortization	1,080	694	1,488	997
Taxes other than income taxes and other – net	523	481	998	943
Interest Expense Aggregate Expenses	326	290	644	569
INCOME TAX EXPENSE (BENEFIT)	164	257	379	536
Electric utility plant and other property – net	78,885		78,885		76,166
Total assets	101,805		101,805		98,141
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	6,622	6,034	12,781	11,733
Net income attributable to NEE	2,258	1,784	3,746	3,922
Equity in earnings (losses) of equity method investees	177	158	(469)	341
Net loss attributable to noncontrolling interests	389	326	758	657
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases			13,620	14,528
Property, plant and equipment – net	145,579		145,579		138,692
Total assets	196,077		196,077		187,539
Investment in equity method investees	5,401		5,401		6,118
Operating Segments [Member] | Florida Power & Light Company
Segment Reporting Information [Line Items]
Operating revenues	4,708	4,389
Net income attributable to NEE	1,275	1,232
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			4,383	4,408
Electric utility plant and other property – net	78,885		78,885		76,166
Total assets	101,805		101,805		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			8,705	8,224
Fuel, purchased power and interchange	946	1,081	1,881	2,115
Utilities Operating Expense, Maintenance and Operations	442	393	822	754
Depreciation and amortization	1,080	694	1,488	997
Taxes other than income taxes and other – net	523	481	999	943
Interest Expense Aggregate Expenses	326	290	644	569
INCOME TAX EXPENSE (BENEFIT)	164	257	379	536
Segment Reporting, Other Segment Item, Amount	48	39	99	94
Net income attributable to NEE	1,275	1,232	2,591	2,404
Operating Segments [Member] | NEER Segment
Segment Reporting Information [Line Items]
Operating revenues	1,914	1,645	4,076	3,509
Fuel, purchased power and interchange	238	223	467	419
Utilities Operating Expense, Maintenance and Operations	656	657	1,315	1,349
Depreciation and amortization	677	703	1,349	1,282
Taxes other than income taxes and other – net	106	85	223	175
Interest Expense Aggregate Expenses	413	298	961	470
INCOME TAX EXPENSE (BENEFIT)	(352)	(263)	(868)	(361)
Segment Reporting, Other Segment Item, Amount	807	610	526	1,343
Net income attributable to NEE	983	552	1,155	1,518
Equity in earnings (losses) of equity method investees	177	158	(469)	341
Net loss attributable to noncontrolling interests	389	326	758	657
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases			9,237	10,120
Property, plant and equipment – net	66,694		66,694		62,526
Total assets	94,272		94,272		89,398
Investment in equity method investees	5,401		5,401		6,118
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	78	35	166	68
Net income attributable to NEE	(230)	(162)	(884)	(32)
Equity in earnings (losses) of equity method investees	0	1	0	21
Net loss attributable to noncontrolling interests	0	$ 0	0	0
Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases			6	$ 106
Property, plant and equipment – net	163		163		160
Total assets	2,753		2,753		2,605
Investment in equity method investees	$ 0		$ 0		$ 0