Commitments and Contingencies (Planned Capital Expenditures) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($) MW
Planned Capital Expenditures [Line Items]
Guarantor obligations, current carrying value	$ 682
Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2024	2,305
2025	7,550
2026	9,000
2027	9,810
2028	9,845
Total	38,510
NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2024	3,525
2025	8,355
2026	5,045
2027	3,075
2028	1,105
Total	21,105
New Generation Expenditures [Member] | Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2024	605
2025	3,180
2026	4,190
2027	3,760
2028	3,645
Total	15,380
Allowance for funds used during construction (AFUDC) - remainder of 2024	35
Allowance for funds used during construction (AFUDC) - 2025	125
Allowance for funds used during construction (AFUDC) - 2026	185
Allowance for funds used during construction (AFUDC) - 2027	180
Allowance for funds used during construction (AFUDC) - 2028	185
Existing Generation Expenditures [Member] | Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2024	275
2025	730
2026	855
2027	1,220
2028	1,225
Total	4,305
Transmission And Distribution Expenditures [Member] | Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2024	1,140
2025	2,740
2026	2,845
2027	3,910
2028	4,040
Total	14,675
Allowance for funds used during construction (AFUDC) - remainder of 2024	30
Allowance for funds used during construction (AFUDC) - 2025	90
Allowance for funds used during construction (AFUDC) - 2026	100
Allowance for funds used during construction (AFUDC) - 2027	90
Allowance for funds used during construction (AFUDC) - 2028	65
Nuclear Fuel Expenditures [Member] | Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2024	45
2025	205
2026	300
2027	305
2028	395
Total	1,250
General And Other Expenditures [Member] | Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2024	240
2025	695
2026	810
2027	615
2028	540
Total	2,900
Wind Expenditures [Member] | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2024	675
2025	1,320
2026	790
2027	65
2028	55
Total	$ 2,905
Planned new generation over 5 year period (in megawatts) | MW	2,665
Solar Expenditures [Member] | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2024	$ 1,335
2025	3,110
2026	1,730
2027	990
2028	0
Total	$ 7,165
Planned new generation over 5 year period (in megawatts) | MW	7,542
Other Clean Energy | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2024	$ 1,005
2025	1,910
2026	1,110
2027	745
2028	25
Total	4,795
Nuclear Expenditures [Member] | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2024	135
2025	430
2026	325
2027	385
2028	350
Total	1,625
Rate-Regulated Transmission [Member] | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2024	220
2025	1,140
2026	850
2027	650
2028	400
Total	3,260
Allowance for funds used during construction (AFUDC) - remainder of 2024	5
Allowance for funds used during construction (AFUDC) - 2025	15
Allowance for funds used during construction (AFUDC) - 2026	20
Allowance for funds used during construction (AFUDC) - 2027	25
Allowance for funds used during construction (AFUDC) - 2028	5
Other Expenditures [Member] | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2024	155
2025	445
2026	240
2027	240
2028	275
Total	$ 1,355