v3.25.4
Cover - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Mar. 03, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Entity File Number 814-01489    
Entity Registrant Name North Haven Private Income Fund LLC    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 87-4562172    
Entity Address, Address Line One 1585 Broadway    
Entity Address, City or Town New York    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 10036    
City Area Code 212    
Local Phone Number 761-4000    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   185,125,779  
Entity Public Float     $ 0
Entity Central Index Key 0001851322    
Amendment Flag false    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Current Fiscal Year End Date --12-31    
Document Financial Statement Error Correction [Flag] false    
Auditor Firm ID 34    
Auditor Name Deloitte & Touche LLP    
Auditor Location New York, New York