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Condensed Consolidated Statements of Changes in Equity - Duke Energy Progress - USD ($)
$ in Millions
Total
Duke Energy Progress
Duke Energy Progress
Member's Equity
Beginning balance at Dec. 31, 2023     $ 10,807
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) $ 3,319 $ 820 820
Ending balance at Sep. 30, 2024     11,627
Beginning balance at Jun. 30, 2024     11,302
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) 1,281 325 325
Ending balance at Sep. 30, 2024     11,627
Beginning balance at Dec. 31, 2024   11,971 11,971
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) 3,784 978 978
Contributions from parent     300
Equitization of certain intercompany balances with affiliates     57
Ending balance at Sep. 30, 2025   13,306 13,306
Beginning balance at Jun. 30, 2025     12,934
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) $ 1,421 372 372
Ending balance at Sep. 30, 2025   $ 13,306 $ 13,306