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Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended
Revenue Recognition (Details) - USD ($) $ in Millions	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 6,100	$ 6,000
Florida Power & Light Company
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4,300	$ 4,000
Unbilled revenues	621		$ 705
Revenue, remaining performance obligation	975
NEER Segment
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation	$ 730
Revenue Benchmark [Member] \| Florida Power & Light Company \| Customer Concentration Risk \| Retail Customers
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	90.00%