v3.26.3
Document And Entity Information - shares
 9 Months Ended
Sep. 30, 2026
Nov. 12, 2026
Document Information Line Items    
Entity Central Index Key 0002041841  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2026  
Document Fiscal Year Focus 2026  
Document Transition Report false  
Entity File Number 814-01843  
Entity Registrant Name Lord Abbett Private Credit Fund S  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 99-5126353  
Entity Address, Address Line One 30 Hudson Street  
Entity Address, City or Town Jersey City  
Entity Address, State or Province NJ  
Entity Address, Postal Zip Code 07302  
City Area Code 888  
Local Phone Number 522-2388  
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 Common Stock, Shares Outstanding   9,367,081
Amendment Flag false  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --12-31