v3.25.4
Condensed Schedule of Investments
$ in Thousands
Dec. 31, 2025
USD ($)
Summary of Investment Holdings [Line Items]  
Fair Value $ 3,555,635
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Cash and Cash Equivalents | Cash | Cash Held at Banks  
Summary of Investment Holdings [Line Items]  
Fair Value $ 51,262
Fair Value as a Percentage of Net Assets 1.30%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Cash and Cash Equivalents | Cash | Total Cash (Cost: $51,262)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 51,262
Fair Value as a Percentage of Net Assets 1.30%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Cash and Cash Equivalents | Money Market Fund | Dreyfus Government Cash Management | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 8,745
Fair Value as a Percentage of Net Assets 0.20%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Cash and Cash Equivalents | Money Market Fund | Fidelity Investments Money Market Treasury | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 4,737
Fair Value as a Percentage of Net Assets 0.10%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Derivative at Fair Value | Derivative Assets at Fair Value | Foreign Currency Contracts  
Summary of Investment Holdings [Line Items]  
Fair Value $ 143
Fair Value as a Percentage of Net Assets 0.00%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Derivative at Fair Value | Derivative Assets at Fair Value | Total Derivative Assets at Fair Value  
Summary of Investment Holdings [Line Items]  
Fair Value $ 143
Fair Value as a Percentage of Net Assets 0.00%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Derivative at Fair Value | Derivative Liabilities at Fair Value | Foreign Currency Contracts  
Summary of Investment Holdings [Line Items]  
Fair Value $ (265)
Fair Value as a Percentage of Net Assets 0.00%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Derivative at Fair Value | Derivative Liabilities at Fair Value | Total Derivative Liabilities at Fair Value  
Summary of Investment Holdings [Line Items]  
Fair Value $ (265)
Fair Value as a Percentage of Net Assets 0.00%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Consumer and Services | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 9,738 [1]
Fair Value as a Percentage of Net Assets 0.30% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Consumer and Services | Other Investment(s) in Debt | EMEA  
Summary of Investment Holdings [Line Items]  
Fair Value $ 29,670 [1]
Fair Value as a Percentage of Net Assets 0.80% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Consumer and Services | Total Consumer and Services  
Summary of Investment Holdings [Line Items]  
Fair Value $ 39,408 [1]
Fair Value as a Percentage of Net Assets 1.00% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Digital Infrastructure | Odyssey Holdco L.L.C. | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 25,001 [1]
Fair Value as a Percentage of Net Assets 0.70% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Digital Infrastructure | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 101,724 [1]
Fair Value as a Percentage of Net Assets 2.70% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Digital Infrastructure | Total Digital Infrastructure  
Summary of Investment Holdings [Line Items]  
Fair Value $ 126,725 [1]
Fair Value as a Percentage of Net Assets 3.30% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Energy Infrastructure Services | Total Energy Infrastructure  
Summary of Investment Holdings [Line Items]  
Fair Value $ 62,031 [1]
Fair Value as a Percentage of Net Assets 1.60% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Energy Infrastructure | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 62,031 [1]
Fair Value as a Percentage of Net Assets 1.60% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Energy | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 197,485 [1],[2]
Fair Value as a Percentage of Net Assets 5.20% [1],[2]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Energy | Total Energy  
Summary of Investment Holdings [Line Items]  
Fair Value $ 197,485 [1]
Fair Value as a Percentage of Net Assets 5.20% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Industrials | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 2,549 [1]
Fair Value as a Percentage of Net Assets 0.10% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Industrials | Total Industrials  
Summary of Investment Holdings [Line Items]  
Fair Value $ 2,549 [1]
Fair Value as a Percentage of Net Assets 0.10% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Infrastructure Services | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 112,436 [1]
Fair Value as a Percentage of Net Assets 2.90% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Infrastructure Services | Total Infrastructure Services  
Summary of Investment Holdings [Line Items]  
Fair Value $ 112,436 [1]
Fair Value as a Percentage of Net Assets 2.90% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Technology, Media and Entertainment | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 20,012
Fair Value as a Percentage of Net Assets 0.50% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Technology, Media and Entertainment |Total Technology, Media and Entertainment  
Summary of Investment Holdings [Line Items]  
Fair Value $ 20,012 [1]
Fair Value as a Percentage of Net Assets 0.50% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Total Debt Investments - Infrastructure (Cost: Americas $570,634, EMEA $25,910)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 698,531 [1]
Fair Value as a Percentage of Net Assets 18.30% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Transportation Infrastructure | Other Investments in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 65,836 [1]
Fair Value as a Percentage of Net Assets 1.70% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Transportation Infrastructure | Poseidon Seller 3 L.L.C. | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 72,049 [1]
Fair Value as a Percentage of Net Assets 1.90% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Infrastructure | Transportation Infrastructure | Total Transportation Infrastructure  
Summary of Investment Holdings [Line Items]  
Fair Value $ 137,885 [1]
Fair Value as a Percentage of Net Assets 3.60% [1]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Consumer and Services | Total Consumer and Services  
Summary of Investment Holdings [Line Items]  
Fair Value $ 137,265 [1],[3]
Fair Value as a Percentage of Net Assets 3.60% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Consumer and Services| Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 128,251 [1],[3]
Fair Value as a Percentage of Net Assets 3.40% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Consumer and Services| Other Investment(s) in Debt | EMEA  
Summary of Investment Holdings [Line Items]  
Fair Value $ 9,014 [1],[3]
Fair Value as a Percentage of Net Assets 0.20% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Digital Infrastructure | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 2,135 [1],[3]
Fair Value as a Percentage of Net Assets 0.10% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Digital Infrastructure | Total Digital Infrastructure  
Summary of Investment Holdings [Line Items]  
Fair Value $ 2,135 [1],[3]
Fair Value as a Percentage of Net Assets 0.10% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Energy Infrastructure | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 6,408 [1],[3]
Fair Value as a Percentage of Net Assets 0.20% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Energy Infrastructure | Total Infrastructure  
Summary of Investment Holdings [Line Items]  
Fair Value $ 6,408 [1],[3]
Fair Value as a Percentage of Net Assets 0.20% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Energy | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 4,283 [1],[3]
Fair Value as a Percentage of Net Assets 0.10% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Energy | Total Energy  
Summary of Investment Holdings [Line Items]  
Fair Value $ 4,283 [1],[3]
Fair Value as a Percentage of Net Assets 0.10% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Healthcare | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 33,875 [1],[3]
Fair Value as a Percentage of Net Assets 0.90% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Healthcare | Other Investment(s) in Debt | EMEA  
Summary of Investment Holdings [Line Items]  
Fair Value $ 4,156 [1],[3]
Fair Value as a Percentage of Net Assets 0.10% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Healthcare | Total Healthcare  
Summary of Investment Holdings [Line Items]  
Fair Value $ 38,031 [1],[3]
Fair Value as a Percentage of Net Assets 1.00% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Industrials | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 35,592 [1],[3]
Fair Value as a Percentage of Net Assets 0.90% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Industrials | Total Industrials  
Summary of Investment Holdings [Line Items]  
Fair Value $ 35,592 [1],[3]
Fair Value as a Percentage of Net Assets 0.90% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Infrastructure Services | Other Investment(s) in Debt | APAC  
Summary of Investment Holdings [Line Items]  
Fair Value $ 2,136 [1],[3]
Fair Value as a Percentage of Net Assets 0.10% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Infrastructure Services | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 123,976 [1],[3]
Fair Value as a Percentage of Net Assets 3.20% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Infrastructure Services | Other Investment(s) in Debt | EMEA  
Summary of Investment Holdings [Line Items]  
Fair Value $ 5,149 [1],[3]
Fair Value as a Percentage of Net Assets 0.10% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Infrastructure Services | Total Infrastructure Services  
Summary of Investment Holdings [Line Items]  
Fair Value $ 131,261 [1],[3]
Fair Value as a Percentage of Net Assets 3.40% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Real Estate | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 6,147 [1],[3]
Fair Value as a Percentage of Net Assets 0.20% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Real Estate | Total Real Estate  
Summary of Investment Holdings [Line Items]  
Fair Value $ 6,147 [1],[3]
Fair Value as a Percentage of Net Assets 0.20% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Technology, Media and Entertainment | Other Investment(s) in Debt | APAC  
Summary of Investment Holdings [Line Items]  
Fair Value $ 3,015 [1],[3]
Fair Value as a Percentage of Net Assets 0.10% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Technology, Media and Entertainment | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 91,082 [1],[3]
Fair Value as a Percentage of Net Assets 2.40% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Technology, Media and Entertainment | Other Investment(s) in Debt | EMEA  
Summary of Investment Holdings [Line Items]  
Fair Value $ 2,010 [1],[3]
Fair Value as a Percentage of Net Assets 0.10% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Technology, Media and Entertainment | Total Technology, Media and Entertainment  
Summary of Investment Holdings [Line Items]  
Fair Value $ 96,107 [1],[3]
Fair Value as a Percentage of Net Assets 2.50% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Total Debt Investments (Cost: Americas $1,101,545, EMEA $46,243, APAC $5,145)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 1,166,894 [1],[3]
Fair Value as a Percentage of Net Assets 30.60% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Total Debt Investments - Liquid (Cost: Americas $443,224, EMEA $20,329, APAC $5,145)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 468,363 [1],[3]
Fair Value as a Percentage of Net Assets 12.30% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Total Investments and Investments in Affiliated Investee Funds (Cost: $3,822,467)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 4,160,071 [1],[3]
Fair Value as a Percentage of Net Assets 109.00%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Transportation Infrastructure | Other Investment(s) in Debt | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 11,134 [1],[3]
Fair Value as a Percentage of Net Assets 0.30% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Debt Investments | Debt Investments - Liquid | Transportation Infrastructure | Total Transportation  
Summary of Investment Holdings [Line Items]  
Fair Value $ 11,134 [1],[3]
Fair Value as a Percentage of Net Assets 0.30% [1],[3]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Digital Infrastructure | Eucalyptus I HoldCo (CYM) L.P. (1,637,829,051,635 Shares) | APAC  
Summary of Investment Holdings [Line Items]  
Fair Value $ 346,583 [4],[5]
Fair Value as a Percentage of Net Assets 9.10% [4],[5]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Digital Infrastructure | Odyssey Holdco L.L.C. (811,288 Shares) | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 244,587 [5],[6]
Fair Value as a Percentage of Net Assets 6.40% [5],[6]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Digital Infrastructure | Other Investment(s) in Equity | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 21,259 [5]
Fair Value as a Percentage of Net Assets 0.60% [5]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Digital Infrastructure | Total Digital Infrastructure  
Summary of Investment Holdings [Line Items]  
Fair Value $ 612,429 [5]
Fair Value as a Percentage of Net Assets 16.00% [5]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Energy Infrastructure | Other Investment(s) in Equity | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 123,060 [5]
Fair Value as a Percentage of Net Assets 3.20% [5]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Energy Infrastructure | Total Energy Infrastructure  
Summary of Investment Holdings [Line Items]  
Fair Value $ 123,060 [5]
Fair Value as a Percentage of Net Assets 3.20% [5]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Transportation Infrastructure | Hieroglyphs L.P. (220 Shares) | EMEA  
Summary of Investment Holdings [Line Items]  
Fair Value $ 222,041 [5]
Fair Value as a Percentage of Net Assets 5.80% [5]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Transportation Infrastructure | Mercury Co-Invest L.P. (783,265 Shares) | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 534,915 [5],[7]
Fair Value as a Percentage of Net Assets 14.00% [5],[7]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Transportation Infrastructure | Other Investment(s) in Equity | EMEA  
Summary of Investment Holdings [Line Items]  
Fair Value $ 76 [5]
Fair Value as a Percentage of Net Assets 0.00% [5]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Transportation Infrastructure | Poseidon Holdco I L.P. (500,000 Shares) | Americas  
Summary of Investment Holdings [Line Items]  
Fair Value $ 580,177 [5],[8]
Fair Value as a Percentage of Net Assets 15.20% [5],[8]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Transportation Infrastructure | Total Transportation Infrastructure  
Summary of Investment Holdings [Line Items]  
Fair Value $ 1,337,209 [5]
Fair Value as a Percentage of Net Assets 35.00% [5]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Various | Other Investment(s) in Affiliated Investee Funds | Various  
Summary of Investment Holdings [Line Items]  
Fair Value $ 130,251 [5],[9]
Fair Value as a Percentage of Net Assets 3.40% [5],[9]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Various | Total Various  
Summary of Investment Holdings [Line Items]  
Fair Value $ 920,479 [5],[9]
Fair Value as a Percentage of Net Assets 24.10% [5],[9]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Equity Investments | Various |Infrastructure Investments L.P. (640,423 Shares) | Various  
Summary of Investment Holdings [Line Items]  
Fair Value $ 790,228 [5],[9],[10]
Fair Value as a Percentage of Net Assets 20.70% [5],[9],[10]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Investments and Investments in Affiliated Investee Funds | Total Equity Investments (Cost: Americas $1,349,855, EMEA $219,658, APAC $297,475, Various $802,546)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 2,993,177 [5]
Fair Value as a Percentage of Net Assets 78.40% [5]
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Total Cash and Cash Equivalents (Cost $64,744)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 64,744
Fair Value as a Percentage of Net Assets 1.70%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Total Derivatives  
Summary of Investment Holdings [Line Items]  
Fair Value $ (122)
Fair Value as a Percentage of Net Assets 0.00%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Total Investments, Investments in Affiliated Investee Funds, Cash and Cash Equivalents and Derivative Instruments (Cost $3,887,211)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 4,224,693
Fair Value as a Percentage of Net Assets 110.70%
Investment, Identifier [Axis]: BXINFRA Aggregator (CYM) L.P. | Total Money Market Fund (Cost: $13,482 Americas)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 13,482
Fair Value as a Percentage of Net Assets 0.40%
Investment, Identifier [Axis]: Investments | BXINFRA Aggregator (CYM) L.P. (129,060,376 Units)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 3,555,635 [11]
Fair Value as a Percentage of Net Assets 102.00% [11]
Investment, Identifier [Axis]: Investments | Total Investments (Cost $3,324,540)  
Summary of Investment Holdings [Line Items]  
Fair Value $ 3,555,635
Fair Value as a Percentage of Net Assets 102.00%
[1] Includes different forms of interests that represent a creditor relationship with an investee, including but not limited to (1) bank loans, (2) interests in CLOs and (3) direct lending debt investments.
[2] There were no single investments included in this category that exceeded 5% of net assets of BXINFRA Aggregator (CYM) L.P., Blackstone Infrastructure Strategies L.P., Blackstone Infrastructure Strategies (TE) L.P. or a Parallel Fund (as defined below).
[3] Investments are generally liquid in nature, are intended to be held for short durations and may be used to generate income, facilitate capital deployment or provide a potential source of liquidity. Industries may be diversified outside of infrastructure industries.
[4] BXINFRA through its interest in Infrastructure Investments L.P. also holds interests in Eucalyptus I HoldCo (CYM) L.P. with BXINFRA’s proportionate fair value representing $34.8 million, or 0.9% of BXINFRA Net Assets and BXINFRA indirectly owns 165,605,569,717 shares in the investee.
[5] Equity Investments are generally considered equity interests, which includes different forms of interests and rights and obligations that represent ownership in an entity or the right to acquire or dispose of ownership in an entity, including but not limited to (1) common equity, (2) preferred equity, (3) limited partner interest (4) warrants and (5) other equity-linked securities.
[6] BXINFRA through its interest in Infrastructure Investments L.P. holds an interest in Odyssey Holdco L.L.C. and Odyssey Holdco II L.L.C. BXINFRA’s proportionate fair value in the equity investment is $217.2 million, representing 5.7% of BXINFRA Net Assets and BXINFRA indirectly owns 719,237 shares in the investee.
[7] BXINFRA through its interest in Infrastructure Investments L.P. holds an interest in an investee also held by Mercury Co-Invest L.P. with BXINFRA’s proportionate fair value representing $89.0 million, or 2.3% of BXINFRA Net Assets and BXINFRA indirectly owns 131,326 shares in the investee.
[8] BXINFRA through its interest in Infrastructure Investments L.P. holds an interest in an investee also held by Poseidon Holdco I L.P. with BXINFRA’s proportionate fair value representing $37.1 million, or 1.0% of BXINFRA Net Assets and BXINFRA indirectly owns 32,214 shares in the investee.
[9] Fund investments are diversified and are not categorized to one industry.
[10] BXINFRA is indirectly exposed to portfolio companies owned by Infrastructure Investments L.P. The investments of Infrastructure Investments L.P. are within the following industries: Energy, Transportation and Digital which are 29.1%, 28.4% and 42.6% of the Infrastructure Investments L.P. vehicle’s investments, respectively.
[11] Refer to Note 3. “Investment in the Aggregator” for details on BXINFRA U.S.’s proportional share of investments through investees.