v3.26.3
Cover Page - shares
 9 Months Ended
Sep. 30, 2026
Oct. 31, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2026  
Document Transition Report false  
Entity File Number 000-56672  
Entity Registrant Name Blackstone Infrastructure Strategies L.P.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 99-4067586  
Entity Address, Address Line One 345 Park Avenue  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10154  
City Area Code (212)  
Local Phone Number 583-5000  
Title of 12(b) Security None  
Trading Symbol None  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Central Index Key 0002030772  
Amendment Flag false  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q3  
Class I Series I Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   146,112,666
Class I Series II Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   1,007,581
Class I Series III Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0
Class S Limited Partnership Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   62,709,649
Class D Limited Partnership Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   6,735,571
Blackstone Infrastructure Strategies (TE) L.P.    
Document Information [Line Items]    
Entity File Number 000-56838  
Entity Registrant Name Blackstone Infrastructure Strategies (TE) L.P.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 99-4573038  
Title of 12(b) Security None  
Trading Symbol None  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Central Index Key 0002050229  
Blackstone Infrastructure Strategies (TE) L.P. | Class I Series I Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   29,480,049
Blackstone Infrastructure Strategies (TE) L.P. | Class I Series II Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0
Blackstone Infrastructure Strategies (TE) L.P. | Class I Series III Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0
Blackstone Infrastructure Strategies (TE) L.P. | Class S Limited Partnership Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   22,581,026
Blackstone Infrastructure Strategies (TE) L.P. | Class D Limited Partnership Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0
Blackstone Infrastructure Strategies (TE) L.P. | Class I Limited Partnership Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   4,038,526
Blackstone Infrastructure Strategies (TE) L.P. | Class S Limited Partnership ACC Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   5,121,935
Blackstone Infrastructure Strategies (TE) L.P. | Class D Limited Partnership ACC Units    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0