Variable Interest Entities (Details) - VIE	Jun. 30, 2026	Dec. 31, 2025
NexPoint Storage Partners, Inc.
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	54.50%	53.00%
NexPoint Storage Partners Operating Company, LLC
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	33.70%	33.80%
Las Vegas Land Owner, LLC
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	75.00%	77.70%
Perilune Aero Equity Holdings One, LLC
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	16.40%	16.40%
Sandstone Pasadena Apartments, LLC
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	50.00%	50.00%
Life Sciences II DST
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	25.80%	25.80%
Semiconductor DST
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	19.20%	19.20%
Capital Acquisitions Partners, LLC
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	0.00%	20.90%
NexPoint Real Estate Finance Operating Partnership, L.P.
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	12.90%	12.90%
VineBrook Homes Operating Partnership, L.P.
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	12.00%	12.30%
NexPoint SFR Operating Partnership, L.P.
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	28.00%	28.00%
IQHQ Holdings, LP
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	0.90%	0.90%
NexAnnuity Holdings, Inc.
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	100.00%	100.00%
AMS C-Store JV, LLC
Variable Interest Entity [Line Items]
Effective ownership (as a percent)	100.00%	100.00%