v3.26.1
Summary of Significant Accounting Policies - Summary of Partnership's Investments Valuation by Fair Value Hierarchy Levels (Details) - USD ($)
Jun. 30, 2026
Mar. 31, 2026
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure $ 105,038,859 $ 11,179,112
Affiliated fund [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investee funds 94,055,758 11,073,581
Total investments 103,900,794 11,123,435
Macquarie Infrastructure Fund, L.P [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Government bonds 9,845,036 49,854
Total investments 9,845,036 49,854
Derivative instruments $ 1,138,065 $ 55,677
Derivative Asset Statement of Financial Position Extensible Enumeration Not Disclosed Flag false false
Liabilities    
Promissory notes $ 110,000 $ 110,000
Derivative liabilities 65,580 38,014
Liabilities, Fair Value Disclosure $ 175,580 $ 148,014
Derivative Liability Statement Of Financial Position Extensible Enumeration Not Disclosed Flag false false
Fair Value, Inputs, Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure $ 9,845,036 $ 49,854
Fair Value, Inputs, Level 1 [Member] | Affiliated fund [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investee funds 0 0
Total investments 9,845,036 49,854
Fair Value, Inputs, Level 1 [Member] | Macquarie Infrastructure Fund, L.P [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Government bonds 9,845,036 49,854
Derivative instruments 0 0
Liabilities    
Promissory notes 0 0
Derivative liabilities 0 0
Liabilities, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure 1,138,065 55,677
Fair Value, Inputs, Level 2 [Member] | Affiliated fund [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investee funds 0 0
Total investments 0 0
Fair Value, Inputs, Level 2 [Member] | Macquarie Infrastructure Fund, L.P [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Government bonds 0 0
Derivative instruments 1,138,065 55,677
Liabilities    
Promissory notes 0 0
Derivative liabilities 65,580 38,014
Liabilities, Fair Value Disclosure 65,580 38,014
Fair Value, Inputs, Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member] | Affiliated fund [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investee funds 0 0
Total investments 0 0
Fair Value, Inputs, Level 3 [Member] | Macquarie Infrastructure Fund, L.P [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Government bonds 0 0
Derivative instruments 0 0
Liabilities    
Promissory notes 110,000 110,000
Derivative liabilities 0 0
Liabilities, Fair Value Disclosure 110,000 110,000
Fair Value, Net Asset Value Per Share [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure 94,055,758 11,073,581
Fair Value, Net Asset Value Per Share [Member] | Affiliated fund [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investee funds 94,055,758 11,073,581
Total investments 94,055,758 11,073,581
Fair Value, Net Asset Value Per Share [Member] | Macquarie Infrastructure Fund, L.P [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Government bonds 0 0
Derivative instruments 0 0
Liabilities    
Promissory notes 0 0
Derivative liabilities 0 0
Liabilities, Fair Value Disclosure $ 0 $ 0