Selected Quarterly Financial Data (Unaudited) - Narrative (Details)	12 Months Ended
Dec. 31, 2024
Quarterly Financial Information Disclosure [Abstract]
Percentage of distributions qualified as interest related dividends	81.90%
Percentage of distributions qualified as excess interest income	79.90%

Investment Company, Percentage Of Distributions Qualified As Interest Related Dividends

No definition available.

Name:	kfit_InvestmentCompanyPercentageOfDistributionsQualifiedAsInterestRelatedDividends
Namespace Prefix:	kfit_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration