v3.25.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2025
May 02, 2025
Document and Entity Information [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2025  
Document Transition Report false  
Entity File Number 001-38126  
Entity Tax Identification Number 38-3980194  
Entity Registrant Name Altice USA, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 1 Court Square West  
Entity Address, City or Town Long Island City,  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 11101  
City Area Code (516)  
Local Phone Number 803-2300  
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  
Title of 12(b) Security Class A Common Stock, par value $0.01 per share  
Trading Symbol ATUS  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   467,697,203
Entity Central Index Key 0001702780  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Amendment Flag false