Income Taxes - Reconciliation Between the Effective Income Tax Rates and the Applicable Statutory Rate (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
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	4.10%	14.70%	(0.40%)	0.20%
Taxes attributable to noncontrolling interests	4.00%	(83.10%)	30.00%	5.40%
PTCs and ITCs – NEER	(3.20%)	169.40%	(31.00%)	(11.90%)
Amortization of deferred regulatory credit	(3.50%)	72.70%	(27.80%)	(4.90%)
Other – net	(1.50%)	11.20%	(10.10%)	(3.20%)
Effective income tax rate	20.90%	205.90%	(18.30%)	6.60%
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%	4.00%	4.40%	4.20%
Taxes attributable to noncontrolling interests	0.00%	0.00%	0.00%	0.00%
PTCs and ITCs – NEER	0.00%	0.00%	0.00%	0.00%
Amortization of deferred regulatory credit	(3.90%)	(3.70%)	(4.00%)	(3.50%)
Other – net	(0.70%)	(0.80%)	(0.60%)	(0.90%)
Effective income tax rate	20.80%	20.50%	20.80%	20.80%