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) |
Table | Schedule of Segment Reporting Information, by Segment [Table] |
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 | 69,773,000,000 | 70,842,000,000 | |||||||||||||
Goodwill acquired | |||||||||||||||
Goodwill impairment | |||||||||||||||
Held for sale | ( | (799,000,000) | |||||||||||||
Other | ( | ( | ( | ( | ( | ( | |||||||||
Ending balance | 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 |