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Property and Equipment (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Property and equipment
Total property and equipment	$ 5,970,106	$ 5,915,213
Construction in progress
Property and equipment
Total property and equipment	42,038	16,844
Construction in progress \| Software related projects
Property and equipment
Total property and equipment	20,149	3,469
Construction in progress \| Other
Property and equipment
Total property and equipment	$ 21,889	$ 13,375

Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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