Quarterly report pursuant to Section 13 or 15(d)

Non-Cash Activities (Notes)

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Non-Cash Activities (Notes)
6 Months Ended
Jun. 30, 2011
Non Cash Activities [Abstract]  
Nonmonetary Transactions Disclosure [Text Block]
Non-Cash Activities
We purchase capital equipment and incur costs relating to construction of facilities, including tenant finishing allowances. Expenditures included in construction trade payables as of June 30, 2011 and 2010 amounted to $27.3 million and $30.8 million, respectively.