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Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Reserves
The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Accounts Payable within Other Current Liabilities and Other within Other Noncurrent Liabilities on the Condensed Consolidated Balance Sheets.
(in millions)June 30, 2024December 31, 2023
Reserves for Environmental Remediation
Duke Energy$82 $88 
Duke Energy Carolinas23 23 
Progress Energy20 19 
Duke Energy Progress9 9 
Duke Energy Florida10 10 
Duke Energy Ohio31 36 
Duke Energy Indiana2 2 
Piedmont7 7