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Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Revenue Recognition (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 6,700	$ 6,400	$ 12,800	$ 12,300
Florida Power & Light Company
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4,900	$ 4,700	9,200	$ 8,700
Unbilled revenues	872		872		$ 705
Revenue, remaining performance obligation	1,230		1,230
NEER Segment
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation	$ 630		$ 630
Revenue Benchmark [Member] \| Florida Power & Light Company \| Customer Concentration Risk \| Retail Customers
Disaggregation of Revenue [Line Items]
Concentration risk, percentage			90.00%