Percentage of distribution servicing fees.

No definition available.

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- Definition

Percentage of gross income.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

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- Definition

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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- Definition

Percentage increase (decrease) in fund net asset value, assuming reinvestment of dividends and capital gain distributions.

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- Definition

Percentage of investment owned to net assets.

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of cash outflow for fees classified as other.

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Indicates title and position of individual or name of group identified as chief operating decision maker (CODM) for segment reporting.

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Description of nature of expense information used by chief operating decision maker (CODM) to manage operation when segment expense information by category is not disclosed.

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Significant Accounting Policies (Details)	3 Months Ended	6 Months Ended	9 Months Ended
Significant Accounting Policies (Details)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) Segment	Dec. 31, 2025 USD ($)
ISQ Open Infrastructure Company LLC - Series I [Member]
Significant Accounting Policies [Line Items]
Cash (in Dollars) \| $		$ 6,743	$ 7,000
Owned percentage of net assets		25.10%	22.50%
Percentage of gross income		90.00%
Operating segment (in Segment)		1
Reporting segment (in Segment)		1
Description of CODM		The chief operating decision maker (“CODM”) is comprised of the Company’s Chief Executive Officer and Chief Investment Officer (the “Principal Committee”) which assesses the performance and makes operating decisions of the Company on a consolidated basis.
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]		Chief Executive Officer
ISQ Open Infrastructure Company LLC - Series II [Member]
Significant Accounting Policies [Line Items]
Percentage of gross income		90.00%
Operating segment (in Segment)		1
Reporting segment (in Segment)		1
Description of CODM		The chief operating decision maker (“CODM”) is comprised of the Company’s Chief Executive Officer and Chief Investment Officer (the “Principal Committee”) which assesses the performance and makes operating decisions of the Company on a consolidated basis.
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]		Chief Executive Officer
Cash equivalents (in Dollars) \| $		$ 23,747,560	$ 2,277,971
Servicing fees payable (in Dollars) \| $	$ 0	$ 3,719,797	$ 849
Total Return attributable		100.00%
ISQ Open Infrastructure Company LLC - Series II [Member] \| High Water Mark [Member]
Significant Accounting Policies [Line Items]
Total Return attributable		5.00%
Investor Shares Member] \| ISQ Open Infrastructure Company LLC - Series II [Member]
Significant Accounting Policies [Line Items]
Total Return attributable		12.50%
Class F-S Shares [Member] \| ISQ Open Infrastructure Company LLC - Series II [Member]
Significant Accounting Policies [Line Items]
Percentage of distribution servicing fees		0.85%
Class F-J Shares [Member] \| ISQ Open Infrastructure Company LLC - Series II [Member]
Significant Accounting Policies [Line Items]
Percentage of distribution servicing fees		0.50%
Class F-DTE Shares [Member] \| ISQ Open Infrastructure Company LLC - Series II [Member]
Significant Accounting Policies [Line Items]
Percentage of distribution servicing fees		0.25%