Commitments and Contingencies (Long-term Purchase Commitment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
NEER Segment
Required capacity and/or minimum payments [Abstract]
Remainder of 2022	$ 1,160		$ 1,160
2023	2,235		2,235
2024	585		585
2025	115		115
2026	80		80
Thereafter	545		545
Commitment to invest	230		230
Joint Obligations Remainder Current Year	120		120
Joint Obligations Second Year	710		710
Joint Obligations Third Year	360		360
Joint Obligations Fourth Year	65		65
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	3,600		3,600
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
Mountain Valley Pipeline | NEER Segment | Natural Gas Transportation Agreement
Required capacity and/or minimum payments [Abstract]
Equity method investment, ownership percentage	31.90%		31.90%
Florida Power & Light Company
Required capacity and/or minimum payments [Abstract]
Remainder of 2022	$ 270		$ 270
2023	985		985
2024	950		950
2025	925		925
2026	915		915
Thereafter	8,860		8,860
Related Party Transaction, Amounts of Transaction	104	$ 105	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 2022	105		105
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	$ 77	$ 79