Rendering

Component: (Network and Table)
Network
040701 - Disclosure - Goodwill And Other Intangible Assets (Narrative) (Details)
(http://att.com/role/GoodwillAndOtherIntangibleAssetsNarrativeDetails)
TableSchedule of Finite-Lived Intangible Assets by Major Class [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000732717 (http://www.sec.gov/CIK)
Finite Lived Intangible Assets [Line Items]Period [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
Finite-Lived Intangible Assets by Major Class [Axis]Finite-Lived Intangible Assets by Major Class [Axis]
Customer Lists And Relationships [Member]Other Intangible Assets [Member]Wireless [Member]Finite-Lived Intangible Assets, Major Class Name [Domain]Customer Lists And Relationships [Member]Wireless [Member]Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-lived intangible assets - weighted average useful life
P9Y8M12D  
P12Y2M12D  
 
P9Y9M19D  
 
 
 
Customer lists and relationships written off in sale
 
 
 
 
3,187,000,000  
 
 
Licenses
 
 
56,399,000,000  
56,433,000,000  
 
52,318,000,000  
52,352,000,000