Commitments and Contingencies (Long-term Purchase Commitment) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
NEER Segment
Required capacity and/or minimum payments [Abstract]
Remainder of 2022	$ 3,460		$ 3,460
2023	890		890
2024	210		210
2025	105		105
2026	65		65
Thereafter	535		535
Commitment to invest	240		240
Joint Obligations Remainder Current Year	875		875
Joint Obligations Second Year	335		335
Joint Obligations Third Year	5		5
Joint Obligations Fourth Year	5		5
Joint Obligations Fifth Year	0		0
Joint Obligations After Fifth Year	5		5
Contract Group 1 [Member] | NEER Segment
Long-term Purchase Commitment [Line Items]
Commitment amount included in capital expenditures	4,100		4,100
Mountain Valley Pipeline | NEER Segment
Required capacity and/or minimum payments [Abstract]
Amounts Excluded from Required Capacity And/Or Minimum Payments, Annual Commitment	$ 70		$ 70
Equity method investment, ownership percentage	31.90%		31.90%
Florida Power & Light Company
Required capacity and/or minimum payments [Abstract]
Remainder of 2022	$ 510		$ 510
2023	1,010		1,010
2024	985		985
2025	915		915
2026	840		840
Thereafter	8,625		8,625
Related Party Transaction, Amounts of Transaction	107	$ 105	209	$ 209
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 2022	205		205
2023	410		410
2024	410		410
2025	405		405
2026	400		400
Thereafter	5,960		5,960
Florida Power & Light Company | Consolidation, Eliminations [Member]
Required capacity and/or minimum payments [Abstract]
Related Party Transaction, Amounts of Transaction	$ 26	$ 26	$ 51	$ 53