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Cover Page
 9 Months Ended
Sep. 30, 2025
Cover [Abstract]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Sep. 30, 2025
Document Transition Report false
Entity File Number 001-34452
Entity Registrant Name Apollo Commercial Real Estate Finance, Inc.
Entity Incorporation, State or Country Code MD
Entity Tax Identification Number 27-0467113
Entity Address, Address Line One 9 West 57th Street
Entity Address, Address Line Two 42nd Floor
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
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol ARI
Security Exchange Name NYSE
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Small Business Entity false
Emerging Growth Company false
Entity Shell Company false
Amendment Flag false
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q3
Entity Central Index Key 0001467760
Current Fiscal Year End Date --12-31