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Segment Information - Additional Information (Detail)
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12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
Segment
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Dec. 31, 2012
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Dec. 31, 2011
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| Segment Reporting Information [Line Items] | |||
| Number of Reportable Segments | 2 | ||
| Number of customers individually accounting for more than ten percent of total operating revenues | No single customer accounted for more than 10% of our total operating revenues | No single customer accounted for more than 10% of our total operating revenues | No single customer accounted for more than 10% of our total operating revenues |
| Percentage maximum accounted for | 10.00% | 10.00% | 10.00% |
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Wireline
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| Segment Reporting Information [Line Items] | |||
| Number of countries outside the United States of America to which our Wireline segment provides products and services | 150 | ||