v2.4.0.6

SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Carrying cost:
Balance at beginning of period	$ 6,600,886	$ 6,292,621	$ 6,160,630
Additions during period:
Acquisitions	10,491,275	315,538	108,376
Capital expenditures	102,918	21,038	13,798
Dispositions:
Sales and/or transfers to assets held for sale	(157,764)	(46,083)	(34,525)
Foreign currency translation	(7,911)	17,772	44,342
Balance at end of period	17,029,404	6,600,886	6,292,621
Accumulated depreciation:
Balance at beginning of period	1,368,219	1,177,911	987,691
Additions during period:
Depreciation expense	380,734	197,256	198,789
Dispositions:
Sales and/or transfers to assets held for sale	(16,536)	(8,259)	(11,469)
Foreign currency translation	(2,441)	1,311	2,900
Balance at end of period	$ 1,729,976	$ 1,368,219	$ 1,177,911

X

- Definition

The amount as of the balance sheet date of accumulated depreciation pertaining to real estate properties.

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Amount of depreciation expense for the period.

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The amount that was removed from accumulated depreciation pertaining to real estate that was sold in the period.

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Gross amount of real estate as of the balance sheet date.

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Increase or decrease in accumulated depreciation for real estate investments during the period attributed to foreign currency translation and other amounts attributable to purchase accounting.

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