v3.25.2

Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2025
ISQ Open Infrastructure Company LLC Series I
Less: Expense Support from Manager	$ 91,427	$ 222,283
Net Investment Income and Expenses Allocated from ISQ Open Infrastructure Company LLC - Series II
Expenses
Organizational costs	65,708	196,564
Professional fees	25,719	25,719
Total Expenses	91,427	222,283
Less: Expense Support from Manager	(91,427)	(222,283)
Net Expenses
Net Investment Income (Loss)
Net Increase (Decrease) in Net Assets Resulting from Operations
ISQ Open Infrastructure Company LLC Series I \| ISQ Open Infrastructure Company LLC Series II
Expenses	(695,019)	(1,762,258)
Total Investment Income and Expenses Allocated from ISQ Open Infrastructure Company LLC - Series II	(695,019)	(1,762,258)
Less: Expense Support from Manager	695,019	1,762,258
Net Investment Income and Expenses Allocated from ISQ Open Infrastructure Company LLC - Series II
Expenses
Less: Expense Support from Manager	(695,019)	(1,762,258)
ISQ Open Infrastructure Company LLC Series II
Less: Expense Support from Manager	695,019	1,762,258
Expenses
Organizational costs	590,533	1,657,772
Professional fees	104,486	104,486
Total Expenses	695,019	1,762,258
Less: Expense Support from Manager	(695,019)	(1,762,258)
Net Expenses
Net Investment Income (Loss)
Net Increase (Decrease) in Net Assets Resulting from Operations

Amount, after reimbursement and fee waiver, of expense for generation of investment income classified as operating.

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- Definition

A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

+ References

+ Details

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- Details

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- Details

Name:	dei_LegalEntityAxis=ck0002059924_ISQOpenInfrastructureCompanyLLCSeriesIIMember
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- Details

Name:	srt_ConsolidatedEntitiesAxis=ck0002059924_ISQOpenInfrastructureCompanyLLCSeriesIIMember
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ISQ Open Infrastructure Co LLC 10-Q