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Goodwill and Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets
The following tables show the carrying amount and accumulated amortization of intangible assets included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets of the Duke Energy Registrants at December 31, 2024, and 2023.
 December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Emission allowances $8 $ $5 $2 $3 $ $2 $ 
Renewable energy certificates 241 103 136 136  2   
Other 47  5 1 4   22 
Total gross carrying amounts 296 103 146 139 7 2 2 22 
Accumulated amortization – other (19) (3) (3)  (9)
Total intangible assets, net $277 $103 $143 $139 $4 $2 $2 $13 
 December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Emission allowances $$— $$$$— $$— 
Renewable energy certificates 232 97 133 133 — — — 
Other 56 — — — 22 
Total gross carrying amounts 296 97 143 136 22 
Accumulated amortization – other (14)— (3)— (3)— — (6)
Total intangible assets, net $282 $97 $140 $136 $$$$16