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Condensed Consolidated Statements of Changes in Equity - Duke Energy Florida - USD ($)
$ in Millions
Total
Net Unrealized Gains (Losses) on Available-for-Sale Securities
Duke Energy Florida
Duke Energy Florida
Member's Equity
Duke Energy Florida
Net Unrealized Gains (Losses) on Available-for-Sale Securities
Beginning Balance (Parent) at Dec. 31, 2023 $ 50,187 $ (15) $ 10,043 $ 10,048 $ (5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income (loss) 1,138   179 179  
Other 0        
Ending Balance (Parent) at Mar. 31, 2024 50,638 (17) 10,222 10,227 (5)
Beginning Balance (Parent) at Dec. 31, 2024 51,256 (17) 10,981 10,986 (5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income (loss) 1,379   234 234  
Other (2)   (2) (2)  
Ending Balance (Parent) at Mar. 31, 2025 $ 51,794 $ (14) $ 11,213 $ 11,218 $ (5)