v3.10.0.1
Document And Entity Information - USD ($)
$ in Billions
9 Months Ended
Sep. 30, 2018
Jun. 30, 2017
Entity Information [Line Items]    
Entity Registrant Name CCO HOLDINGS LLC  
Entity Central Index Key 0001271833  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Document Type 10-Q  
Document Period End Date Sep. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Trading Symbol CCOH  
Entity Current Reporting Status Yes  
Entity Small Business false  
Entity Emerging Growth Company false  
Amendment Flag false  
Entity Common Stock, Shares Outstanding 1  
Entity Public Float   $ 0.0