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Cover - shares
 3 Months Ended
Mar. 31, 2024
May 01, 2024
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2024  
Document Transition Report false  
Securities Act File Number 000-54755  
Entity Registrant Name CĪON Investment Corporation  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 45-3058280  
Entity Address, Address Line One 100 Park Avenue  
Entity Address, Address Line Two 25th Floor  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10017  
City Area Code (212)  
Local Phone Number 418-4700  
Title of 12(b) Security Common stock, par value $0.001 per share  
Trading Symbol CION  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   53,589,124
Central Index Key 0001534254  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus Q1