Real Estate - Investment Portfolio (Classification Of Investment Property Leases) (Details)	9 Months Ended
Sep. 30, 2011 years
Property Subject to or Available for Operating Lease [Line Items]
Weighted average remaining lease term (in years)	12
Operating [Member]
Property Subject to or Available for Operating Lease [Line Items]
Number of properties leased	1,270
Direct Financing [Member]
Property Subject to or Available for Operating Lease [Line Items]
Number of properties leased	15
Building Portion - Direct Financing / Land Portion - Operating [Member]
Property Subject to or Available for Operating Lease [Line Items]
Number of properties leased	5

Number Of Investment Properties Leased Under Direct Financing And Operating Leases.

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- Definition

Number of Investment Properties leased under the direct financing method

+ Details

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- Definition

Total number of Investment Properties leased under operating leases

+ Details

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- Definition

Weighted average remaining lease term in years of Investment Properties

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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