v3.26.1
Cover
Jun. 05, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 05, 2026
Entity File Number 1-04928
Entity Registrant Name DUKE ENERGY CAROLINAS, LLC
Entity Central Index Key 0000030371
Entity Tax Identification Number 56-0205520
Entity Incorporation, State or Country Code NC
Entity Address, Address Line One 525 South Tryon Street
Entity Address, City or Town Charlotte
Entity Address, State or Province NC
Entity Address, Postal Zip Code 28202-1803
City Area Code 800
Local Phone Number 488-3853
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false