TAX STATUS - Schedule of Cost of Investments for Federal Income Tax Purposes and Appreciation (Depreciation) of Investments (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Asset
Investments, Owned, Federal Income Tax Note [Line Items]
Cost	$ 445,502,845	$ 466,869,683
Unrealized Appreciation	0	0
Unrealized Depreciation	(37,155,071)	(26,737,288)
Net Appreciation (Depreciation)	(37,155,071)	(26,737,288)
Liability
Investments, Owned, Federal Income Tax Note [Line Items]
Cost	0	0
Unrealized Appreciation	0	0
Unrealized Depreciation	(74,768)	(81,459)
Net Appreciation (Depreciation)	(74,768)	(81,459)
Derivative liability \| Liability
Investments, Owned, Federal Income Tax Note [Line Items]
Cost	0	0
Unrealized Appreciation	0	0
Unrealized Depreciation	(74,768)	(81,459)
Net Appreciation (Depreciation)	(74,768)	(81,459)
Loans \| Asset
Investments, Owned, Federal Income Tax Note [Line Items]
Cost	445,502,845	466,869,683
Unrealized Appreciation	0	0
Unrealized Depreciation	(37,155,071)	(26,737,288)
Net Appreciation (Depreciation)	$ (37,155,071)	$ (26,737,288)

WTI Fund X, Inc. 10-Q