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Cover - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2025
Apr. 29, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K/A    
Document Annual Report true    
Document Period End Date Dec. 31, 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    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   132,849,702  
Amendment Flag true    
Amendment Description Explanatory Note Apollo Commercial Real Estate Finance, Inc., a Maryland corporation (“ARI,” our “Company,” “we,” “our” or “us”) is filing this Amendment No. 1 (this “Form 10-K/A”) to its Annual Report on Form 10-K for the fiscal year ended December 31, 2025 that was filed with the Securities and Exchange Commission (“SEC”) on February 10, 2026 (the “Original Form 10-K”) for the sole purpose of including certain of the information required by Part III of Form 10-K. This information was previously omitted from the Original Form 10-K in reliance on General Instruction G(3) to Form 10-K, which permits the information in Part III to be incorporated in the Form 10-K by reference from our definitive proxy statement if such statement is filed no later than 120 days after end of our fiscal year. As required by Rule 12b-15, in connection with this Form 10-K/A, our Principal Executive Officer and Principal Financial Officer are providing Rule 13a-14(a) certifications included herein with paragraphs 3, 4, and 5 of the certifications omitted because no financial statements are included in this Form 10-K/A. Except as explicitly set forth herein, this Form 10-K/A does not purport to modify or update the disclosures in, or exhibits to, the Original Form 10-K or to update the Original Form 10-K to reflect events occurring after the date of such filing.    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001467760    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Public Float     $ 1.3
Documents Incorporated by Reference [Text Block]
Documents Incorporated by Reference
None.