Rendering

Component: (Network and Table)
Network
040702 - Disclosure - Goodwill And Other Intangible Assets (Summary Of Changes In Carrying Amount Of Goodwill, By Segment) (Details)
(http://att.com/role/DisclosureGoodwillAndOtherIntangibleAssetsSummaryOfChangesInCarryingAmountOfGoodwillBySegmentDetails)
TableSchedule of Segment Reporting Information, by Segment [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000732717 (http://www.sec.gov/CIK)
Segment Reporting Information [Line Items]Period [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
2011-01-01 - 2011-12-31
Segment Reporting Information, by Segment [Axis]Segment Reporting Information, by Segment [Axis]Segment Reporting Information, by Segment [Axis]
Wireless [Member]Wireline [Member]Advertising Solutions [Member]Other Segment [Member]Reporting Segment [Domain]Wireless [Member]Wireline [Member]Advertising Solutions [Member]Other Segment [Member]Reporting Segment [Domain]Wireless [Member]Wireline [Member]Advertising Solutions [Member]Other Segment [Member]Reporting Segment [Domain]
Beginning balance
35,803,000,000  
33,970,000,000  
0  
0  
69,773,000,000  
35,755,000,000  
33,638,000,000  
1,059,000,000  
390,000,000  
70,842,000,000  
 
 
 
 
 
Goodwill acquired
305,000,000  
0  
0  
0  
305,000,000  
13,000,000  
5,000,000  
0  
0  
18,000,000  
 
 
 
 
 
Goodwill impairment
 
 
 
 
 
 
 
 
 
 
 
 
2,745,000,000  
 
 
Held for sale
0  
(799,000,000) 
0  
0  
(799,000,000) 
 
 
 
 
 
 
 
 
 
 
Other
(2,000,000) 
(4,000,000) 
0  
0  
(6,000,000) 
35,000,000  
327,000,000  
(1,059,000,000) 
(390,000,000) 
(1,087,000,000) 
 
 
 
 
 
Ending balance
36,106,000,000  
 
33,167,000,000  
 
0  
 
0  
 
69,273,000,000  
 
35,803,000,000  
 
33,970,000,000  
 
0  
 
0  
 
69,773,000,000  
 
35,755,000,000  
 
33,638,000,000  
 
1,059,000,000  
 
390,000,000  
 
70,842,000,000