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Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Revenue Recognition (Details) - USD ($) $ in Millions	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 6,000	$ 6,300	$ 11,400	$ 12,000
Florida Power & Light Company
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4,400	$ 4,800	8,200	$ 8,700
Unbilled revenues	719		719		$ 633
Revenue, remaining performance obligation	370		370
NEER Segment
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation	$ 1,300		$ 1,300
Revenue Benchmark [Member] \| Florida Power & Light Company \| Customer Concentration Risk \| Retail Customers
Disaggregation of Revenue [Line Items]
Concentration risk, percentage			90.00%