v3.25.1
Cover Page - shares
3 Months Ended
Mar. 31, 2025
Apr. 28, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2025  
Document Transition Report false  
Entity File Number 1-13219  
Entity Registrant Name Onity Group Inc.  
Entity Incorporation, State or Country Code FL  
Entity Tax Identification Number 65-0039856  
Entity Address, Address Line One 1661 Worthington Road, Suite 100  
Entity Address, City or Town West Palm Beach,  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 33409  
City Area Code 561  
Local Phone Number 682-8000  
Title of 12(b) Security Common Stock, $0.01 Par Value  
Trading Symbol ONIT  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   8,008,515
Entity Central Index Key 0000873860  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Amendment Flag false