v3.26.3
S000054634 [Member] N-1A Cover
Jun. 30, 2026
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name NEXPOINT FUNDS I
Entity Central Index Key 0001354917
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Prospectus Date Oct. 31, 2026