Commitments and Contingencies (Required Capacity and/or Minimum Payments Under Contracts) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
NEER Segment
Long-term Purchase Commitment [Line Items]
Capacity payments and/or minimum payments - 2023	$ 2,995
Capacity payments and/or minimum payments - 2024	1,145
Capacity payments and/or minimum payments - 2025	135
Capacity payments and/or minimum payments - 2026	90
Capacity payments and/or minimum payments - 2027	80
Capacity payments and/or minimum payments - Thereafter	510
Commitment to invest	260
Joint Obligations First Year	205
Joint Obligations Second Year	865
Joint Obligations Third Year	5
Joint Obligations Fourth Year	5
Joint Obligations Fifth Year	0
Joint ObligationsThereafter	$ 0
Mountain Valley Pipeline [Member] | NEER Segment
Long-term Purchase Commitment [Line Items]
Natural gas transportation agreement, term	20 years
Amounts Excluded from Required Capacity and or Minimum Payments, Annual Commitment	$ 70
Contract Group 1 [Member] | NEER Segment
Long-term Purchase Commitment [Line Items]
Commitment amount included in capital expenditures	3,700
FPL [Member]
Long-term Purchase Commitment [Line Items]
Capacity payments and/or minimum payments - 2023	1,040
Capacity payments and/or minimum payments - 2024	970
Capacity payments and/or minimum payments - 2025	940
Capacity payments and/or minimum payments - 2026	930
Capacity payments and/or minimum payments - 2027	850
Capacity payments and/or minimum payments - Thereafter	8,075
Related Party Transaction, Amounts of Transaction	418	$ 419	$ 386
FPL [Member] | Natural Gas Including Transportation and Storage Contract Minimum Payments [Member] | Sabal Trail and Florida Southeast Connection [Member]
Long-term Purchase Commitment [Line Items]
Capacity payments and/or minimum payments - 2023	410
Capacity payments and/or minimum payments - 2024	410
Capacity payments and/or minimum payments - 2025	405
Capacity payments and/or minimum payments - 2026	400
Capacity payments and/or minimum payments - 2027	400
Capacity payments and/or minimum payments - Thereafter	$ 5,560
Join Venture [Member] | NEER Segment
Long-term Purchase Commitment [Line Items]
Ownership interest	32.20%
Consolidation, Eliminations [Member] | FPL [Member]
Long-term Purchase Commitment [Line Items]
Related Party Transaction, Amounts of Transaction	$ 102	$ 105	$ 108