| December 31, 2013 | December 31, 2012 | |||||||||||
| Other Intangible Assets | Gross Carrying Amount | Accumulated Amortization | Gross Carrying Amount | Accumulated Amortization | ||||||||
| Amortized intangible assets: | ||||||||||||
| Customer lists and relationships: | ||||||||||||
| AT&T Mobility LLC | $ | 982 | $ | 771 | $ | 6,760 | $ | 6,335 | ||||
| BellSouth Corporation | 5,825 | 5,317 | 5,825 | 4,994 | ||||||||
| AT&T Corp. | 2,482 | 2,438 | 2,490 | 2,356 | ||||||||
| Other | - | - | 351 | 350 | ||||||||
| Subtotal | 9,289 | 8,526 | 15,426 | 14,035 | ||||||||
| Other | 284 | 169 | 304 | 174 | ||||||||
| Total | $ | 9,573 | $ | 8,695 | $ | 15,730 | $ | 14,209 | ||||
| Wireless | Wireline | Advertising Solutions | Other | Total | |||||||||||
| Balance as of January 1, 2012 | $ | 35,755 | $ | 33,638 | $ | 1,059 | $ | 390 | $ | 70,842 | |||||
| Goodwill acquired | 13 | 5 | - | - | 18 | ||||||||||
| Other | 35 | 327 | (1,059) | (390) | (1,087) | ||||||||||
| Balance as of December 31, 2012 | 35,803 | 33,970 | - | - | 69,773 | ||||||||||
| Goodwill acquired | 305 | - | - | - | 305 | ||||||||||
| Held for sale | - | (799) | - | - | (799) | ||||||||||
| Other | (2) | (4) | - | - | (6) | ||||||||||
| Balance as of December 31, 2013 | $ | 36,106 | $ | 33,167 | $ | - | $ | - | $ | 69,273 |
| Indefinite-lived intangible assets not subject to amortization: | ||||||||||||
| Licenses | $ | 56,433 | $ | 52,352 | ||||||||
| Trade names | 4,901 | 4,902 | ||||||||||
| Total | $ | 61,334 | $ | 57,254 | ||||||||