|
Operating Financial Information for Reportable Segments (Detail) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2013
|
Mar. 31, 2012
|
| Segment Reporting Information [Line Items] |
|
|
| Operating Revenues |
$ 29,420 |
$ 28,242 |
| Operating income |
6,222 |
5,195 |
|
Wireless
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Operating Revenues |
19,523 |
18,273 |
| Operating income |
6,418 |
5,217 |
|
Wireline
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Operating Revenues |
9,830 |
9,945 |
| Operating income |
13 |
157 |
|
Total Segments
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Operating Revenues |
29,353 |
28,218 |
| Operating income |
6,431 |
5,374 |
|
Corporate, Eliminations and Other
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Operating Revenues |
67 |
24 |
| Operating income |
(209) |
(179) |
|
Reconciling Items
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Operating income |
(209) |
(179) |
|
External Operating Revenues
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
29,420 |
28,242 |
|
External Operating Revenues | Wireless
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
19,496 |
18,250 |
|
External Operating Revenues | Wireless | Service Revenue Retail Service
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
16,155 |
14,872 |
|
External Operating Revenues | Wireless | Service Revenue Other Service
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
557 |
524 |
|
External Operating Revenues | Wireless | Service Revenue
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
16,712 |
15,396 |
|
External Operating Revenues | Wireless | Equipment
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
1,809 |
1,835 |
|
External Operating Revenues | Wireless | Other
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
975 |
1,019 |
|
External Operating Revenues | Wireline
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
9,559 |
9,666 |
|
External Operating Revenues | Wireline | Mass Markets Consumer Retail
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
3,590 |
3,441 |
|
External Operating Revenues | Wireline | Mass Markets Small Business
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
648 |
659 |
|
External Operating Revenues | Wireline | Mass Markets
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
4,238 |
4,100 |
|
External Operating Revenues | Wireline | Global Enterprise Strategic Services
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
2,087 |
1,969 |
|
External Operating Revenues | Wireline | Global Enterprise Core
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
1,660 |
1,882 |
|
External Operating Revenues | Wireline | Global Enterprise
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
3,747 |
3,851 |
|
External Operating Revenues | Wireline | Global Wholesale
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
1,471 |
1,592 |
|
External Operating Revenues | Wireline | Other
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
103 |
123 |
|
External Operating Revenues | Total Segments
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
29,055 |
27,916 |
|
External Operating Revenues | Corporate, Eliminations and Other
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
365 |
326 |
|
Intersegment Revenues | Wireless
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
27 |
23 |
|
Intersegment Revenues | Wireline
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
271 |
279 |
|
Intersegment Revenues | Total Segments
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
298 |
302 |
|
Intersegment Revenues | Corporate, Eliminations and Other
|
|
|
| Segment Reporting Information [Line Items] |
|
|
| Segment reporting information, revenue |
$ (298) |
$ (302) |