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Assets Held for Sale
6 Months Ended
Jun. 30, 2011
Assets Held for Sale [Abstract]  
Assets Held for Sale
3. Assets Held for Sale
    Assets held for sale of $5.3 million as of June 30, 2011 was comprised of the net book value of three land rigs and related inventory for which the sales are expected to be completed during 2011. The three rigs were part of our Asia Pacific rig fleet and have historically been included in the International Drilling segment. We expect the carrying amount of the assets, less costs to sell, will be fully recoverable through sale of the assets.