Income Taxes - Reconciliation Between the Effective Income Tax Rates and the Applicable Statutory Rate (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Effective Income Tax Rate Reconciliation [Line Items]
Statutory federal income tax rate	21.00%	21.00%	21.00%	21.00%
Increases (reductions) resulting from:
State income taxes – net of federal income tax benefit	(4.50%)	1.70%	1.50%	1.30%
Taxes attributable to noncontrolling interests	6.80%	2.60%	3.00%	6.80%
PTCs and ITCs	(21.10%)	(4.70%)	(8.70%)	(9.40%)
Amortization of deferred regulatory credit	(5.00%)	(2.90%)	(2.40%)	(6.70%)
Other – net	(1.90%)	(0.50%)	(0.90%)	(1.50%)
Effective income tax rate	(4.70%)	17.20%	13.50%	11.50%
Florida Power & Light Company
Effective Income Tax Rate Reconciliation [Line Items]
Statutory federal income tax rate	21.00%	21.00%	21.00%	21.00%
Increases (reductions) resulting from:
State income taxes – net of federal income tax benefit	4.40%	4.50%	4.30%	4.40%
Taxes attributable to noncontrolling interests	0.00%	0.00%	0.00%	0.00%
PTCs and ITCs	(2.30%)	(1.90%)	(2.00%)	(1.10%)
Amortization of deferred regulatory credit	(3.30%)	(4.10%)	(3.50%)	(4.00%)
Other – net	(0.30%)	0.10%	(0.30%)	0.10%
Effective income tax rate	19.50%	19.60%	19.50%	20.40%