v3.26.1
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 26, 2026
Cover [Abstract]    
Document Type 10-K  
Amendment Flag false  
Document Period End Date Dec. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus FY  
Entity Registrant Name TCW DIRECT LENDING VIII LLC  
Entity Central Index Key 0001825265  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer No  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
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   12,745,660
Entity Public Float $ 0  
Entity File Number 814-01420  
Entity Tax Identification Number 86-3307898  
Entity Address, Address Line One 200 Clarendon Street  
Entity Address City Or Town Boston  
Entity Address State Or Province MA  
Entity Address Postal Zip Code 02116  
City Area Code 617  
Local Phone Number 936-2275  
Entity Interactive Data Current Yes  
Entity Incorporation State Country Code DE  
Title of Class Common Limited Liability Company Units  
Document Annual Report true  
Document Transition Report false  
ICFR Auditor Attestation Flag false  
Document Financial Statement Error Correction false  
Auditor Name Deloitte & Touche LLP  
Auditor Firm ID 34  
Auditor Location Los Angeles, California, United States of America  
Documents Incorporated by Reference

Documents Incorporated by Reference

TCW Direct Lending VIII LLC will file with the Securities and Exchange Commission, not later than 120 days after the close of its fiscal year ended December 31, 2025, a definitive proxy statement containing the information required to be disclosed under Part III of Form 10-K.

 
Auditor Opinion

Opinion on the Financial Statements and Financial Highlights

We have audited the accompanying consolidated statements of assets and liabilities of TCW Direct Lending VIII LLC and subsidiaries (the “Company”), including the consolidated schedule of investments, as of December 31, 2025 and 2024, the related consolidated statements of operations, changes in members’ capital, and cash flows for each of the three years in the period then ended, financial highlights for the years ended December 31, 2025, 2024, 2023 and 2022, and the related notes (collectively referred to as the “financial statements and financial highlights”). In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations, changes in members’ capital, and cash flows for each of the three years in the period then ended, and the financial highlights for the years ended December 31, 2025, 2024, 2023, and 2022, in conformity with accounting principles generally accepted in the United States of America.