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Asset Impairment
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3 Months Ended | ||
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Mar. 31, 2012
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| Asset Impairment [Abstract] | |||
| Asset Impairment |
During the fourth quarter of 2011, in accordance with the impairment or disposal of long-lived assets subsections of ASC 360-10, Property, Plant and Equipment, we recorded a non-cash pre-tax impairment charge of $170.0 million related to our AADU rigs due to the extended construction and commissioning schedule and related costs. The AADU rigs are reported as part of the U.S. Drilling segment.
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