v3.10.0.1
Document and Entity Information
12 Months Ended
Dec. 31, 2018
USD ($)
shares
Document And Entity Information [Abstract]  
Document Type 10-K
Amendment Flag false
Document Period End Date Dec. 31, 2018
Document Fiscal Year Focus 2018
Document Fiscal Period Focus FY
Trading Symbol MCCCB
Entity Registrant Name MEDIACOM BROADBAND LLC
Entity Central Index Key 0001161364
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer No
Entity Current Reporting Status No
Entity Voluntary Filers Yes
Entity Filer Category Non-accelerated Filer
Entity shell company false
Entity Emerging Growth Company false
Entity Small Business false
Entity Common Stock, Shares Outstanding | shares 0
Entity Public Float | $ $ 0