v3.26.1
Income Taxes - Schedule of Series Ii Incurs Income Tax Expense (Benefit) (Details) - ISQ Open Infrastructure Company LLC - Series II [Member] - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2026
Deferred:    
Federal Income Tax $ 2,458,326
State and Local Income Tax 97,088
Deferred Federal and State and Local Income Tax 2,555,414
Current:    
Federal Income Tax 144,458
State and Local Income Tax 44,560
Current Federal and State and Local Income Tax 189,018
Total Income Tax Provision (Benefit) $ 2,744,432