Commitments and Contingencies (Long-term Purchase Commitment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
NEER Segment
Required capacity and/or minimum payments [Abstract]
Remainder of 2024	$ 2,790		$ 2,790
2025	2,270		2,270
2026	490		490
2027	205		205
2028	120		120
Thereafter	485		485
Commitment to invest	190		190
Joint Obligations Remainder Current Year	345		345
Joint Obligations Second Year	620		620
Joint Obligations Third Year	190		190
Contract Group 1 [Member] | NEER Segment
Long-term Purchase Commitment [Line Items]
Commitment amount included in capital expenditures	4,000		4,000
Florida Power & Light Company
Required capacity and/or minimum payments [Abstract]
Remainder of 2024	285		285
2025	1,140		1,140
2026	1,145		1,145
2027	1,040		1,040
2028	990		990
Thereafter	8,025		8,025
Related Party Transaction, Amounts of Transaction	103	$ 104	306	$ 314
Florida Power & Light Company | Sabal Trail and Florida Southeast Connection [Member] | Natural Gas, Including Transportation And Storage, Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2024	100		100
2025	405		405
2026	400		400
2027	400		400
2028	400		400
Thereafter	5,160		5,160
Florida Power & Light Company | Consolidation, Eliminations [Member]
Required capacity and/or minimum payments [Abstract]
Related Party Transaction, Amounts of Transaction	$ 24	$ 25	$ 72	$ 74