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Commitments and Contingencies (Details) (USD $) | 12 Months Ended |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 Loans | Dec. 31, 2012 Real Estate | Dec. 31, 2012 Strategic Investments | Dec. 31, 2012 Unsecured Debt | Jan. 24, 2013 Subsequent Event
Unfunded Commitments |  |  |  |  |  |  |  |  |
Proceeds from debt transactions | $ 3,510,000,000 |  |  |  |  |  |  |  |
Amount of debt due within the next 12 months | 545,254,000 | [1] |  |  |  |  | 545,254,000 | [1] |
Total unencumbered assets | 3,007,100,000 |  | 4,062,118,000 |  |  |  |  |  |
Real estate, agreement to sell property |  |  |  |  |  |  |  |  | 220,000,000
Percentage of capital committed to strategic investments that may be drawn down | 100.00% |  |  |  |  |  |  |  |
Performance-Based Commitments | 81,069,000 |  |  | 44,751,000 | 36,318,000 | 0 |  |  |
Discretionary Fundings | 102,000 |  |  | 102,000 | 0 | 0 |  |  |
Other | 47,322,000 |  |  | 0 | 0 | 47,322,000 |  |  |
Total | $ 128,493,000 |  |  | $ 44,853,000 | $ 36,318,000 | $ 47,322,000 |  |  |
[1] | Includes minimum required amortization payments on the March 2012 Secured Credit Facilities and the October 2012 Secured Credit Facility.

X
- Definition Represents the off-balance sheet maximum amount of potential additional fundings which the entity will make available to a borrower or tenant for an expansion or addition to a project if it approves of the expansion or addition at its sole discretion. + References No definition available. + Details
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- Definition Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 10 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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