|
Reconciliation of Segment Assets (Detail) (USD $)
In Millions, unless otherwise specified |
Jun. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Segment Reporting Information [Line Items] | ||
| Assets | $ 224,427 | $ 274,098 |
|
Operating Segments
|
||
| Segment Reporting Information [Line Items] | ||
| Assets | 233,036 | 231,002 |
|
Operating Segments | Wireless
|
||
| Segment Reporting Information [Line Items] | ||
| Assets | 153,374 | 146,429 |
|
Operating Segments | Wireline
|
||
| Segment Reporting Information [Line Items] | ||
| Assets | 79,662 | 84,573 |
|
Corporate, Eliminations and Other
|
||
| Segment Reporting Information [Line Items] | ||
| Assets | $ (8,609) | $ 43,096 |