Commitments and Contingencies (Planned Capital Expenditures) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) MW
Planned Capital Expenditures [Line Items]
Guarantor obligations, current carrying value	$ 482
Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2023	2,195
2024	7,805
2025	7,980
2026	8,915
2027	8,960
Total	35,855
NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2023	4,000
2024	6,680
2025	3,765
2026	1,430
2027	730
Total	16,605
New Generation Expenditures [Member] | Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2023	645
2024	2,390
2025	2,750
2026	3,665
2027	3,195
Total	12,645
Allowance for funds used during construction (AFUDC) - remainder of 2023	40
Allowance for funds used during construction (AFUDC) - 2024	110
Allowance for funds used during construction (AFUDC) - 2025	75
Allowance for funds used during construction (AFUDC) - 2026	120
Allowance for funds used during construction (AFUDC) - 2027	115
Existing Generation Expenditures [Member] | Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2023	390
2024	1,350
2025	1,025
2026	1,330
2027	1,465
Total	5,560
Transmission And Distribution Expenditures [Member] | Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2023	790
2024	3,410
2025	3,415
2026	3,160
2027	3,415
Total	14,190
Allowance for funds used during construction (AFUDC) - remainder of 2023	15
Allowance for funds used during construction (AFUDC) - 2024	50
Allowance for funds used during construction (AFUDC) - 2025	50
Allowance for funds used during construction (AFUDC) - 2026	30
Allowance for funds used during construction (AFUDC) - 2027	30
Nuclear Fuel Expenditures [Member] | Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2023	115
2024	145
2025	200
2026	295
2027	300
Total	1,055
General And Other Expenditures [Member] | Florida Power & Light Company
Planned Capital Expenditures [Line Items]
Remainder of 2023	255
2024	510
2025	590
2026	465
2027	585
Total	2,405
Wind Expenditures [Member] | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2023	1,355
2024	2,135
2025	535
2026	85
2027	95
Total	$ 4,205
Planned new generation over 5 year period (in megawatts) | MW	3,730
Solar Expenditures [Member] | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2023	$ 1,225
2024	2,225
2025	1,210
2026	10
2027	5
Total	$ 4,675
Planned new generation over 5 year period (in megawatts) | MW	6,565
Other Clean Energy | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2023	$ 605
2024	730
2025	390
2026	70
2027	70
Total	1,865
Nuclear Expenditures [Member] | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2023	85
2024	265
2025	245
2026	210
2027	295
Total	1,100
Rate-Regulated Transmission [Member] | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2023	230
2024	700
2025	1,180
2026	835
2027	20
Total	2,965
Allowance for funds used during construction (AFUDC) - remainder of 2023	5
Allowance for funds used during construction (AFUDC) - 2024	30
Allowance for funds used during construction (AFUDC) - 2025	90
Allowance for funds used during construction (AFUDC) - 2026	125
Allowance for funds used during construction (AFUDC) - 2027	5
Other Expenditures [Member] | NEER Segment
Planned Capital Expenditures [Line Items]
Remainder of 2023	500
2024	625
2025	205
2026	220
2027	245
Total	$ 1,795