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Condensed Consolidated Statements of Changes in Equity - Duke Energy Carolinas - USD ($)
$ in Millions
Total
Duke Energy Carolinas
Duke Energy Carolinas
Member's Equity
Duke Energy Carolinas
Net Gains (Losses) on Hedges
Beginning balance at Dec. 31, 2023   $ 16,907 $ 16,913 $ (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) $ 3,319 1,405 1,405  
Other comprehensive income (loss)   0    
Other (2)      
Ending balance at Sep. 30, 2024   18,312 18,318 (6)
Beginning balance at Jun. 30, 2024   17,708 17,714 (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 1,281 584 584  
Other comprehensive income (loss)   0    
Other (3) 20 20  
Ending balance at Sep. 30, 2024   18,312 18,318 (6)
Beginning balance at Dec. 31, 2024   17,840 17,846 (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 3,784 1,622 1,622  
Other comprehensive income (loss)   1   1
Other (2) (9) (9)  
Ending balance at Sep. 30, 2025   19,454 19,459 (5)
Beginning balance at Jun. 30, 2025   18,770 18,776 (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) $ 1,421 684 684  
Other comprehensive income (loss)   1   1
Other   (1) (1)  
Ending balance at Sep. 30, 2025   $ 19,454 $ 19,459 $ (5)