v3.26.3
Financial Highlights (Tables)
 9 Months Ended
Sep. 30, 2026
Investment Company, Financial Highlights [Line Items]  
Schedule of Capital Transactions and Differing Fee Arrangements
The following financial highlights are calculated for the unitholders of BXINFRA U.S. as a whole and exclude data for the General Partner, except as otherwise noted herein. Calculation of these highlights on an individual unitholder basis may yield results that vary from those stated herein due to the timing of capital transactions and differing fee arrangements. No Class I-Series III Units have been issued by BXINFRA U.S. since inception. As of September 30, 2025, no Class I-Series II Units were outstanding.
Nine Months Ended September 30, 2026 (a)
Class I
Series I
Units (b)		Series II UnitsClass S
 Units		Class D
 Units
Per Unit Data
Net Asset Value, Beginning of Period$27.54 $— $25.74 $26.99 
Proceeds from Units Issued— 29.99 — — 
Net Investment Income (Loss)0.66 0.23 0.65 0.66 
Net Change in Unrealized Gain (Loss) on Investment in the Aggregator3.85 1.43 3.80 3.83 
Net Increase in Net Assets Resulting from Investment Operations4.52 1.66 4.46 4.50 
Distributions(0.67)(0.23)(0.67)(0.67)
Servicing Fees— — (0.20)(0.06)
Net Increase in Net Assets3.85 1.43 3.60 3.77 
Net Asset Value, End of Period$31.39 $31.42 $29.34 $30.76 
Units Outstanding, End of Period137,502,712 1,000,293 60,245,939 6,690,323 
Total Return Based on Net Asset Value (c)16.40 %5.53 %16.57 %16.45 %
Ratios to Weighted-Average Net Assets (Non-Annualized)
Expenses without Waivers (d)0.15 %0.13 %0.15 %0.15 %
Warehousing Fees Waivers-0.09 %-0.08 %-0.10 %-0.10 %
Total Expenses (d)0.05 %0.04 %0.05 %0.05 %
Net Investment Income (Loss)4.71 %4.42 %4.70 %4.76 %
Nine Months Ended September 30, 2025 (a)
Class I
Series I
Units (b)		Class S
 Units		Class D
 Units
Per Unit Data
Net Asset Value, Beginning of Period$— $— $— 
Proceeds from Units Issued25.00 25.00 25.00 
Net Investment Income (Loss)0.47 0.47 0.47 
Net Change in Unrealized Gain (Loss) on Investment in the Aggregator1.55 1.54 1.54 
Net Increase in Net Assets Resulting from Investment Operations2.02 2.01 2.01 
Distributions(0.50)(0.50)(0.50)
Servicing Fees— (1.74)(0.52)
Net Increase (Decrease) in Net Assets1.53 (0.22)1.00 
Net Asset Value, End of Period$26.53 $24.78 $26.00 
Units Outstanding, End of Period64,395,784 35,465,856 3,404,568 
Total Return Based on Net Asset Value (c)6.11 %-0.88 %3.99 %
Ratios to Weighted-Average Net Assets (Non-Annualized)
Expenses without Waivers (d)0.71 %0.71 %0.72 %
Warehousing Fees Waivers-0.64 %-0.64 %-0.65 %
Total Expenses (d)0.07 %0.07 %0.07 %
Net Investment Income (Loss)2.91 %2.91 %2.97 %
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(a)Amounts and percentages may not add or recalculate due to rounding.
(b)On March 6, 2026, BXINFRA U.S. redesignated Class I Units as Class I-Series I Units.
(c)Total return is calculated as the change in Net Asset Value per Unit during the period, plus distributions per Unit (assuming dividends and distributions are reinvested in accordance with BXINFRA U.S.’s distribution reinvestment plan) divided by the beginning Net Asset Value per Unit or the initial Net Asset Value per Unit, when applicable. Total return does not include upfront transaction fees, if any.
(d)Expense ratio includes Professional Fees, Directors’ Fees, Warehousing Fees and Other.
Blackstone Infrastructure Strategies (TE) L.P.  
Investment Company, Financial Highlights [Line Items]  
Schedule of Capital Transactions and Differing Fee Arrangements
The following financial highlights are calculated for the unitholders of the Feeder as a whole. Calculation of these highlights on an individual unitholder basis may yield results that vary from those stated herein due to the timing of capital transactions and differing fee arrangements. No Class I-Series II-TE Units, Class I-Series III-TE Units, Class D-TE Units or Class D-TE-ACC Units have been issued by the Feeder since inception.
Nine Months Ended September 30, 2026 (a)
Class I
Series I-TE Units (b)Class S-TE Units
Per Unit Data
Net Asset Value, Beginning of Period$27.28 $25.50 
Proceeds from Units Issued— — 
Net Investment Income (Loss)0.92 0.91 
Net Change in Unrealized Gain (Loss) on Investment in BXINFRA U.S.3.35 3.32 
Net Increase in Net Assets Resulting from Investment Operations4.28 4.23 
Distributions(0.66)(0.66)
Servicing Fees— (0.19)
Net Increase in Net Assets3.62 3.38 
Net Asset Value, End of Period$30.90 $28.88 
Units Outstanding, End of Period27,960,346 21,715,564 
Total Return Based on Net Asset Value (c)15.69 %15.86 %
Ratios to Weighted-Average Net Assets (Non-Annualized)
Total Expenses (d)0.03 %0.03 %
Net Investment Income (Loss)1.83 %1.86 %
Nine Months Ended September 30, 2026 (a)
Class I-TE-ACC UnitsClass S-TE-ACC Units
Per Unit Data
Net Asset Value, Beginning of Period$27.43 $25.58 
Proceeds from Units Issued— — 
Net Investment Income (Loss)0.93 0.92 
Net Change in Unrealized Gain (Loss) on Investment in BXINFRA U.S.3.40 3.37 
Net Increase in Net Assets Resulting from Investment Operations4.34 4.29 
Servicing Fees— (0.27)
Net Increase in Net Assets4.34 4.02 
Net Asset Value, End of Period$31.77 $29.60 
Units Outstanding, End of Period3,220,869 4,917,244 
Total Return Based on Net Asset Value (c)15.81 %15.71 %
Ratios to Weighted-Average Net Assets (Non-Annualized)
Total Expenses (d)0.03 %0.03 %
Net Investment Income (Loss)2.16 %1.95 %
Nine Months Ended September 30, 2025 (a)
Class I
Series I-TE Units (b)Class S-TE Units
Per Unit Data
Net Asset Value, Beginning of Period$— $— 
Proceeds from Units Issued25.00 25.00 
Net Investment Income (Loss)0.92 0.92 
Net Change in Unrealized Gain (Loss) on Investment in BXINFRA U.S.0.92 0.91 
Net Increase in Net Assets Resulting from Investment Operations1.84 1.83 
Distributions(0.49)(0.49)
Servicing Fees— (1.72)
Net Increase (Decrease) in Net Assets1.34 (0.38)
Net Asset Value, End of Period$26.34 $24.62 
Units Outstanding, End of Period13,128,392 12,407,234 
Total Return Based on Net Asset Value (c)5.38 %-1.52 %
Ratios to Weighted-Average Net Assets (Non-Annualized)
Total Expenses (d)0.03 %0.03 %
Net Investment Income (Loss)1.66 %1.70 %
Nine Months Ended September 30, 2025 (a)
Class I-TE-ACC UnitsClass S-TE-ACC Units
Per Unit Data
Net Asset Value, Beginning of Period$— $— 
Proceeds from Units Issued25.00 25.00 
Net Investment Income (Loss)0.72 0.76 
Net Change in Unrealized Gain (Loss) on Investment in BXINFRA U.S.0.56 0.52 
Net Increase in Net Assets Resulting from Investment Operations1.28 1.28 
Servicing Fees— (1.78)
Net Increase (Decrease) in Net Assets1.28 (0.50)
Net Asset Value, End of Period$26.28 $24.50 
Units Outstanding, End of Period769,403 1,516,957 
Total Return Based on Net Asset Value (c)5.14 %-1.99 %
Ratios to Weighted-Average Net Assets (Non-Annualized)
Total Expenses (d)0.02 %0.02 %
Net Investment Income (Loss)2.75 %2.17 %
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(a)Amounts and percentages may not add or recalculate due to rounding.
(b)On March 6, 2026, the Feeder redesignated existing Class I-TE Units as Class I-Series I-TE Units.
(c)Total return is calculated as the change in Net Asset Value per Unit during the period, plus distributions per Unit (assuming dividends and distributions are reinvested in accordance with the Feeder’s distribution reinvestment plan) divided by the beginning Net Asset Value per Unit or the initial Net Asset Value per Unit, when applicable. Total return does not include upfront transaction fees, if any.
(d)Expense ratio includes Professional Fees.
BXINFRA Aggregator (CYM) L.P.  
Investment Company, Financial Highlights [Line Items]  
Schedule of Capital Transactions and Differing Fee Arrangements
The following financial highlights are calculated for the limited partners as a whole. Calculation of these highlights on an individual limited partner basis may yield results that vary from those stated herein due to the timing of capital transactions and differing fee arrangements. No Class I-Series III Aggregator Units have been issued since inception. As of September 30, 2025, no Class I-Series II Aggregator Units were outstanding.
Nine Months Ended September 30, 2026 (a)
Class I
Series I Units (b)Series II Units
Per Unit Data
Net Asset Value, Beginning of Period (b)$27.55 $— 
Proceeds from Units Issued— 30.00 
Net Investment Income (Loss)(0.61)(0.20)
Net Realized and Unrealized Gain (Loss) on Investments, Derivative Instruments and Translation of Assets and Liabilities in Foreign Currencies5.12 1.86 
Net Increase in Net Assets4.51 1.66 
Distributions(0.67)(0.23)
Net Asset Value, End of Period$31.39 $31.43 
Units Outstanding, End of Period214,497,433 999,953 
Total Return Based on Net Asset Value (c)16.38 %5.53 %
Ratios to Weighted-Average Net Assets (Non-Annualized)
Expenses without Waivers (d)1.57 %0.47 %
Expense Support and Management Fees Waivers (d)0.00 %0.00 %
Accrued Performance Participation Allocation0.94 %0.79 %
Total Expenses2.51 %1.26 %
Net Investment Income (Loss)-2.10 %-0.69 %
Nine Months Ended September 30, 2025 (a)
Class I
Series I Units (b)
Per Unit Data
Net Asset Value, Beginning of Period (b)$— 
Proceeds from Units Issued25.00 
Net Investment Income (Loss)0.23 
Net Realized and Unrealized Gain (Loss) on Investments, Derivative Instruments and Translation of Assets and Liabilities in Foreign Currencies1.80 
Net Increase in Net Assets2.03 
Distributions(0.50)
Net Asset Value, End of Period$26.53 
Units Outstanding, End of Period111,674,297 
Total Return Based on Net Asset Value (c)6.13 %
Ratios to Weighted-Average Net Assets (Non-Annualized)
Expenses without Waivers (d)1.87 %
Expense Support and Management Fees Waivers (d)-0.56 %
Accrued Performance Participation Allocation1.21 %
Total Expenses2.52 %
Net Investment Income (Loss)0.71 %
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(a)Amounts and percentages may not add or recalculate due to rounding.
(b)On March 6, 2026, the Aggregator redesignated existing Class A units as Class I-Series I Units.
(c)Total return is calculated as the change in Net Asset Value per Unit during the period, plus distributions per Unit (assuming dividends and distributions are reinvested in accordance with the Aggregator’s distribution reinvestment plan) divided by the beginning Net Asset Value per Unit or the initial Net Asset Value per Unit, when applicable. Total return does not include upfront transaction fees, if any.
(d)Expense ratio includes Management Fees, Organizational Expenses, Professional Fees, Interest Expense, Deferred Offering Costs Amortization, Deferred Financing Cost Amortization, Administration Fees and Other, as applicable.