Commitments and Contingencies (Long-term Purchase Commitment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
NEER Segment
Required capacity and/or minimum payments [Abstract]
Remainder of 2025	$ 2,780		$ 2,780
2026	5,160		5,160
2027	1,010		1,010
2028	310		310
2029	140		140
Thereafter	475		475
Commitment to invest	155		155
Joint Obligations Remainder Current Year	460		460
Joint Obligations Second Year	725		725
Joint Obligations Fourth Year	5		5
Contract Group 1 [Member] | NEER Segment
Long-term Purchase Commitment [Line Items]
Commitment amount included in capital expenditures	7,400		7,400
Florida Power & Light Company
Required capacity and/or minimum payments [Abstract]
Remainder of 2025	290		290
2026	1,175		1,175
2027	1,145		1,145
2028	1,110		1,110
2029	1,095		1,095
Thereafter	7,315		7,315
Related Party Transaction, Amounts of Transaction	104	$ 103	308	$ 306
Florida Power & Light Company | Pipeline Affiliates [Member] | Natural Gas, Including Transportation And Storage, Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2025	100		100
2026	400		400
2027	400		400
2028	400		400
2029	395		395
Thereafter	$ 4,765		$ 4,765
Florida Power & Light Company | Consolidation, Eliminations [Member]
Required capacity and/or minimum payments [Abstract]
Related Party Transaction, Amounts of Transaction		$ 24		$ 72