v3.26.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2026
May 08, 2026
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31  
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 814-01424  
Entity Registrant Name APOLLO DEBT SOLUTIONS BDC  
Entity Central Index Key 0001837532  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 86-1950548  
Entity Address, Address Line One 9 West 57th Street  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10019  
City Area Code 212  
Local Phone Number 515-3200  
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  
Entity Shell Company false  
Common Class S [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   120,674,898
Common Class D [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   1,693,763
Common Class I [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   485,902,928