Consolidated Statement of Operations	9 Months Ended
	Dec. 31, 2025 USD ($)
ISQ Open Infrastructure Company LLC - Series I
Less: Expense Support from Manager	$ (642,214)
Net Expenses	24,515
Net Investment Loss	(1,060,454)
Net Realized and Unrealized Gain (Loss) on Investments
Net change in unrealized gain (loss) on investments (net of deferred taxes of $8,733,421)	7,758,958
Net Realized and Unrealized Gain (Loss) on Investments	7,758,958
Net Change in Unrealized Gain (Loss) on Investment allocated from ISQ Open Infrastructure Company LLC - Series II (Net of deferred taxes of $2,022,199)	7,758,958
Net Increase in Net Assets Resulting from Operations	6,698,504
Income
Net Investment Income and Expenses Allocated from ISQ Open Infrastructure Company LLC - Series II	(1,035,939)
Expenses
Organizational costs	328,197
Professional fees	288,945
Offering costs	48,587
Other expenses	1,000
Total Expenses	666,729
ISQ Open Infrastructure Company LLC - Series I | ISQ Open Infrastructure Company LLC - Series II
Interest income	105,289
Performance participation allocation	(843,937)
Organizational costs	(780,914)
Professional fees	(479,005)
Offering costs	(89,477)
Management fees	(51,211)
Servicing fees	(26,519)
Interest and loan related fees	(18,362)
Other expenses	(139,641)
Total Investment Income and Expenses Allocated from ISQ Open Infrastructure Company LLC - Series II	(2,323,777)
Less: Expense Support from Manager	(1,287,838)
Income
Net Investment Income and Expenses Allocated from ISQ Open Infrastructure Company LLC - Series II	(1,035,939)
ISQ Open Infrastructure Company LLC - Series II
Interest income	488,664
Less: Expense Support from Manager	(6,371,865)
Net Expenses	4,793,896
Net Investment Loss	(4,305,232)
Net Realized and Unrealized Gain (Loss) on Investments
Net change in unrealized gain (loss) on investments (net of deferred taxes of $8,733,421)	34,509,110
Net change in unrealized gain (loss) on foreign currency translation	2,080
Net Realized and Unrealized Gain (Loss) on Investments	34,511,190
Net Increase in Net Assets Resulting from Operations	30,205,958
Income
Total Income	488,664
Expenses
Performance participation allocation	3,415,609
Organizational costs	2,867,509
Professional fees	1,935,077
Interest and loan related fees	1,703,645
Offering costs	411,159
Management fees	212,689
Servicing fees	156,028
Other expenses	464,045
Total Expenses	$ 11,165,761