Cover Page Document	12 Months Ended
	Dec. 31, 2022
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Entity File Number	333-209196-01
Entity Registrant Name	DUKE ENERGY FLORIDA PROJECT FINANCE, LLC
Entity Tax Identification Number	81-0977581
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	299 First Avenue North
Entity Address, City or Town	St. Petersburg
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33701
City Area Code	704
Local Phone Number	382-3853
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	false
Documents Incorporated by Reference	None
Entity Central Index Key	0001669374
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Charlotte, NC
Duke Energy Florida [Member]
Document Information [Line Items]
Entity File Number	1-03274
Entity Registrant Name	DUKE ENERGY FLORIDA, LLC
Entity Tax Identification Number	59-0247770
Entity Incorporation, State or Country Code	FL
Entity Address, Address Line One	299 First Avenue North
Entity Address, City or Town	St. Petersburg
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33701
City Area Code	704
Local Phone Number	382-3853
Entity Well-known Seasoned Issuer	Yes
Entity Central Index Key	0000037637