Commitments and Contingencies (Long-term Purchase Commitment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
NEER Segment
Required capacity and/or minimum payments [Abstract]
Remainder of 2023	$ 2,505		$ 2,505
2024	3,260		3,260
2025	285		285
2026	165		165
2027	150		150
Thereafter	1,690		1,690
Commitment to invest	235		235
Joint Obligations Remainder Current Year	565		565
Joint Obligations Second Year	1,385		1,385
Joint Obligations Third Year	5		5
Joint Obligations Fourth Year	5		5
Joint Obligations Fifth Year	0		0
Joint Obligations After Fifth Year	0		0
Contract Group 1 [Member] | NEER Segment
Long-term Purchase Commitment [Line Items]
Commitment amount included in capital expenditures	5,300		5,300
Mountain Valley Pipeline | NEER Segment
Required capacity and/or minimum payments [Abstract]
Amounts from Required Capacity And/Or Minimum Payments, Annual Commitment	$ 70		$ 70
Mountain Valley Pipeline | NEER Segment | Natural Gas Transportation Agreement
Required capacity and/or minimum payments [Abstract]
Equity method investment, ownership percentage	32.20%		32.20%
Florida Power & Light Company
Required capacity and/or minimum payments [Abstract]
Remainder of 2023	$ 275		$ 275
2024	1,070		1,070
2025	1,075		1,075
2026	1,075		1,075
2027	970		970
Thereafter	8,565		8,565
Related Party Transaction, Amounts of Transaction	104	$ 104	314	$ 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 2023	105		105
2024	410		410
2025	405		405
2026	400		400
2027	400		400
Thereafter	5,560		5,560
Florida Power & Light Company | Consolidation, Eliminations [Member]
Required capacity and/or minimum payments [Abstract]
Related Party Transaction, Amounts of Transaction	$ 25	$ 26	$ 74	$ 77