The aggregate amount assigned to a major class of finite-lived intangible assets acquired either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.

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The number of real estate properties owned as of the balance sheet date.

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The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

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The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

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Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

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The impact of foreign currency exchange rate on real estate.

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The increase decrease in foreign currency exchange rate.

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Increase decrease in net investments in direct financing lease during the period.

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Net Investments in Properties (Narratives) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013 property	Mar. 31, 2012	Dec. 31, 2012
Real Estate Investment Property At Cost
Foreign Currency Exchange Rate	$ 1.2821		$ 1.3218
Foreign currency exchange rate impact	15,300,000
Increase decrease in foreign currency exchange rate	(3.00%)
Reclassification from direct financing lease	5,600,000
Investments in real estate
Number of real estate properties	422
Payments to acquire real estate	71,131,000
Proceeds from mortgage financing	99,000,000
Asset Impairment Charges	3,279,000	5,724,000
Self storage
Investments in real estate
Number of real estate properties	21
Hotel
Investments in real estate
Number of real estate properties	1
Asset Impairment Charges	1,100,000
Domestic
Investments in real estate
Number of real estate properties	1
Payments to acquire real estate	72,400,000
Net lease intangibles recorded	13,300,000
Proceeds from mortgage financing	36,500,000
Proceeds from escrow	$ 25,300,000