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Risk Management and Derivatives (Risk Concentrations, Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
California
Concentration Risk [Line Items]
% of Total	15.10%
Geographic Concentration Risk
Concentration Risk [Line Items]
% of Total	10.00%
Customer Concentration Risk
Concentration Risk [Line Items]
Number of large borrowers or tenants	5
Aggregate annualized interest and operating lease revenue	$ 99.8
Percent of aggregate annualized interest and operating lease revenue	8.00%
Land
Concentration Risk [Line Items]
% of Total	21.60%
Office
Concentration Risk [Line Items]
% of Total	15.20%
Industrial / R&D
Concentration Risk [Line Items]
% of Total	13.50%
Entertainment / Leisure
Concentration Risk [Line Items]
% of Total	10.70%

X

- Definition

Aggregate Annualized Interest and Operating Lease Revenue Accounted by Large Borrowers or Tenants

+ References

No definition available.

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X

- Definition

Represents the number of large borrowers considered for evaluating concentration risk.

+ References

No definition available.

+ Details

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X

- Definition

Represents the percentage of aggregate annualized interest and operating lease revenue accounted by large borrowers or tenants.

+ References

No definition available.

+ Details

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- Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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