Related Party Transactions - Schedule of Series I Expenses (Details) - ISQ Open Infrastructure Company LLC - Series I [Member] - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
Mar. 31, 2025	Jun. 30, 2026	Dec. 31, 2025
Related Party Transaction [Line Items]
Amount		$ 840,234
Related Party [Member]
Related Party Transaction [Line Items]
Amount	$ 97,847	$ 100,173	$ 642,214
Last Expiration Date	March 31, 2031	June 30, 2031	December 31, 2030

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details