For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Revenue Recognition (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 7,200	$ 6,400	$ 19,200	$ 17,400
Florida Power & Light Company
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	5,500	$ 5,100	14,100	$ 13,200
Unbilled revenues	773		773		$ 661
Revenue, remaining performance obligation	365		365
NEER Segment
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation	$ 1,200		$ 1,200
Revenue Benchmark [Member] \| Florida Power & Light Company \| Customer Concentration Risk \| Retail Customers
Disaggregation of Revenue [Line Items]
Concentration risk, percentage			90.00%