v3.25.2
Cover Page
Sep. 11, 2025
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 11, 2025
Entity Registrant Name NEXPOINT CAPITAL, INC.
Entity Incorporation, State or Country Code DE
Entity File Number 814-01074
Entity Tax Identification Number 38-3926499
Entity Address, Address Line One 300 Crescent Court
Entity Address, Address Line Two Suite 700
Entity Address, City or Town Dallas
Entity Address, State or Province TX
Entity Address, Postal Zip Code 75201
City Area Code 972
Local Phone Number 934-4700
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0001588272