Regulatory Matters (Schedule of Net Carrying Value Of Facilities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Public Utilities, General Disclosures [Line Items]
Remaining net book value	$ 115,315	$ 111,748
Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Remaining net book value	36,774	35,981
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Remaining net book value	24,056	24,674
Duke Energy Florida
Public Utilities, General Disclosures [Line Items]
Remaining net book value	21,286	19,563
Duke Energy Indiana
Public Utilities, General Disclosures [Line Items]
Remaining net book value	$ 12,399	$ 12,100