Income Taxes - Reconciliation Between the Effective Income Tax Rates and the Applicable Statutory Rate (Details)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Effective Income Tax Rate Reconciliation [Line Items]
Statutory federal income tax rate	21.00%	21.00%
Increases (reductions) resulting from:
State income taxes – net of federal income tax benefit	5.70%	0.80%
Taxes attributable to noncontrolling interests	(4.70%)	2.00%
PTCs and ITCs – NEER	6.20%	(5.00%)
Amortization of deferred regulatory credit	4.70%	(1.90%)
Other – net	1.20%	(2.60%)
Effective income tax rate	34.10%	14.30%
Florida Power & Light Company
Effective Income Tax Rate Reconciliation [Line Items]
Statutory federal income tax rate	21.00%	21.00%
Increases (reductions) resulting from:
State income taxes – net of federal income tax benefit	4.30%	4.40%
Taxes attributable to noncontrolling interests	0.00%	0.00%
PTCs and ITCs – NEER	0.00%	0.00%
Amortization of deferred regulatory credit	(4.00%)	(3.40%)
Other – net	(0.60%)	(0.80%)
Effective income tax rate	20.70%	21.20%