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Other Investments (Details) (USD $) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 19, 2013 | Jul. 31, 2010 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Sep. 30, 2012 | Jun. 30, 2012 | Apr. 19, 2013 | Sep. 30, 2013 | Sep. 30, 2012 | Jun. 30, 2012 | Dec. 31, 2012 | Jul. 28, 2010
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  | $ 179,877,000 |  |  |  |  |  |  |  |  |  | $ 179,877,000 |  |  |  |  |  | $ 387,718,000 |
Earnings (loss) from equity method investments |  |  |  | 4,345,000 |  |  |  | 22,719,000 |  |  |  |  |  | 34,346,000 |  | 75,925,000 |  |  |  |  |
Other, carrying value |  |  |  | 7,633,000 |  |  |  |  |  |  |  |  |  | 7,633,000 |  |  |  |  |  | 11,125,000 |
Total other investments, carrying value |  |  |  | 187,510,000 |  |  |  |  |  |  |  |  |  | 187,510,000 |  |  |  |  |  | 398,843,000 |
Income Statements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earnings from equity method investments |  |  |  | 4,345,000 |  |  |  | 22,719,000 |  |  |  |  |  | 34,346,000 |  | 75,925,000 |  |  |  |  |
LNR Property LLC (LNR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  | 0 |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  | 205,773,000 |
Earnings (loss) from equity method investments | 0 | [1],[2] |  | 0 |  |  |  | 15,206,000 |  | 15,206,000 | [1],[2] | 55,553,000 | [1],[2] | 16,465,000 |  | 36,017,000 |  | 36,017,000 | [1],[2] |  |
Percentage of ownership acquired by the Company and a group of investors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00%
Contribution towards principal amount of Holdco Notes |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of cash contributed in exchange for equity interest |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest in investee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 120,000,000
Real estate, agreement to sell investment | 220,300,000 |  |  | 0 | 220,281,000 |  | 0 |  |  |  |  |  |  | 220,281,000 |  |  |  |  |  |  |
Real estate, net proceeds held in escrow for potential indemnification obligations | 25,200,000 |  |  |  |  |  |  |  |  |  |  | 25,200,000 |  |  |  |  |  |  |  |  |
Income Statements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue | 32,794,000 | [1],[3] |  |  |  |  |  |  |  | 86,038,000 | [1],[3] | 179,373,000 | [1],[3] |  |  |  |  | 234,734,000 | [1],[3] |  |
Income tax expense | 736,000 | [1] |  |  |  |  |  |  |  | 1,293,000 | [1] | 2,137,000 | [1] |  |  |  |  | 4,935,000 | [1] |  |
Net income (loss) attributable to LNR | (51,983,000) | [1] |  |  |  |  |  |  |  | 63,420,000 | [1] | 179,719,000 | [1] |  |  |  |  | 150,219,000 | [1] |  |
iStar's ownership percentage | 24.00% | [1] |  |  | 0.00% | [1] |  | 24.00% | [1] | 24.00% | [1] | 24.00% | [1] |  |  | 24.00% | [1] | 24.00% | [1] |  | 24.00%
Earnings from equity method investments | 0 | [1],[2] |  | 0 |  |  |  | 15,206,000 |  | 15,206,000 | [1],[2] | 55,553,000 | [1],[2] | 16,465,000 |  | 36,017,000 |  | 36,017,000 | [1],[2] |  |
Balance Sheets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets(2) |  |  |  |  | 0 | [1],[3] |  | 98,513,452,000 | [1],[3] |  |  |  |  |  |  | 98,513,452,000 | [1],[3] |  |  |  |
Total debt(2) |  |  |  |  | 0 | [1],[3] |  | 97,521,520,000 | [1],[3] |  |  |  |  |  |  | 97,521,520,000 | [1],[3] |  |  |  |
Total liabilities(2) |  |  |  |  | 0 | [1],[3] |  | 97,639,696,000 | [1],[3] |  |  |  |  |  |  | 97,639,696,000 | [1],[3] |  |  |  |
Noncontrolling interests |  |  |  |  | 0 | [1] |  | 8,067,000 | [1] |  |  |  |  |  |  | 8,067,000 | [1] |  |  |  |
LNR Property LLC equity |  |  |  |  | 0 | [1] |  | 865,689,000 | [1] |  |  |  |  |  |  | 865,689,000 | [1] |  |  |  |
iStar's equity in LNR |  |  |  | 0 | 0 | [1],[4] | 220,281,000 | 205,773,000 | [1],[4] |  |  |  |  | 0 |  | 205,773,000 | [1],[4] |  |  | 205,773,000 |
Total assets, VIE |  |  |  |  |  |  |  | 1,380,000,000 | [1],[3] |  |  |  |  |  |  | 1,380,000,000 | [1],[3] |  |  |  |
Total debt, VIE |  |  |  |  |  |  |  | 398,900,000 |  |  |  |  |  |  |  | 398,900,000 |  |  |  |  |
Total liabilities, VIE |  |  |  |  |  |  |  | 517,100,000 |  |  |  |  |  |  |  | 517,100,000 |  |  |  |  |
Income (loss) from equity method investments, before OTTI |  |  |  | 0 | 10,178,000 |  | 45,375,000 |  |  |  |  |  |  | 55,553,000 | [1] |  |  |  |  |  |
Income (loss) from equity method investments, release of AOCI |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,700,000 |  |  |  |  |  |  |
Income (loss) from equity method investments, net of OTTI |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,500,000 | [1] |  |  |  |  |  |
LNR and certain commercial mortgage backed securities and collateralized debt obligation trusts that are considered VIEs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entities of Equity Method Investment Summarized Financial Information Assets |  |  |  |  |  |  |  | 97,500,000,000 |  |  |  |  |  |  |  | 97,500,000,000 |  |  |  |  |
Variable Interest Entities of Equity Method Investment Summarized Financial Information Liabilities |  |  |  |  |  |  |  | 97,200,000,000 |  |  |  |  |  |  |  | 97,200,000,000 |  |  |  |  |
Balance Sheets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Servicing fee revenue | 5,100,000 |  |  |  |  |  |  |  |  | 27,500,000 |  | 55,500,000 |  |  |  |  |  | 72,600,000 |  |  |
Madison Funds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  | 63,784,000 |  |  |  |  |  |  |  |  |  | 63,784,000 |  |  |  |  |  | 56,547,000 |
Earnings (loss) from equity method investments |  |  |  | 3,674,000 |  |  |  | 3,206,000 |  |  |  |  |  | 10,798,000 |  | 11,937,000 |  |  |  |  |
Income Statements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earnings from equity method investments |  |  |  | 3,674,000 |  |  |  | 3,206,000 |  |  |  |  |  | 10,798,000 |  | 11,937,000 |  |  |  |  |
Madison International Real Estate Fund IILP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
iStar's ownership percentage |  |  |  | 29.52% |  |  |  |  |  |  |  |  |  | 29.52% |  |  |  |  |  |  |
Madison International Real Estate Fund IIILP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
iStar's ownership percentage |  |  |  | 32.92% |  |  |  |  |  |  |  |  |  | 32.92% |  |  |  |  |  |  |
Madison GP1 Investors LP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
iStar's ownership percentage |  |  |  | 29.52% |  |  |  |  |  |  |  |  |  | 29.52% |  |  |  |  |  |  |
Oak Hill Funds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  | 23,831,000 |  |  |  |  |  |  |  |  |  | 23,831,000 |  |  |  |  |  | 29,840,000 |
Earnings (loss) from equity method investments |  |  |  | 1,207,000 |  |  |  | 2,049,000 |  |  |  |  |  | 3,272,000 |  | 5,932,000 |  |  |  |  |
Income Statements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earnings from equity method investments |  |  |  | 1,207,000 |  |  |  | 2,049,000 |  |  |  |  |  | 3,272,000 |  | 5,932,000 |  |  |  |  |
Oak Hill Funds Group 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
iStar's ownership percentage |  |  |  | 5.92% |  |  |  |  |  |  |  |  |  | 5.92% |  |  |  |  |  |  |
Real estate equity investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  | 45,927,000 |  |  |  |  |  |  |  |  |  | 45,927,000 |  |  |  |  |  | 47,619,000 |
Earnings (loss) from equity method investments |  |  |  | (966,000) |  |  |  | 2,219,000 |  |  |  |  |  | 1,755,000 |  | 17,709,000 |  |  |  |  |
Income Statements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earnings from equity method investments |  |  |  | (966,000) |  |  |  | 2,219,000 |  |  |  |  |  | 1,755,000 |  | 17,709,000 |  |  |  |  |
Other equity method investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  | 46,335,000 |  |  |  |  |  |  |  |  |  | 46,335,000 |  |  |  |  |  | 47,939,000 |
Earnings (loss) from equity method investments |  |  |  | 430,000 |  |  |  | 39,000 |  |  |  |  |  | 2,056,000 |  | 4,330,000 |  |  |  |  |
Income Statements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earnings from equity method investments |  |  |  | $ 430,000 |  |  |  | $ 39,000 |  |  |  |  |  | $ 2,056,000 |  | $ 4,330,000 |  |  |  |  |
[1] | The Company recorded its investment in LNR, which was sold in April 2013, on a one quarter lag, therefore, amounts in the Company's financial statements for the three and nine months ended September 30, 2013 and 2012 are based on balances and results from LNR for the period from April 1, 2013 to April 19, 2013 and for the period from October 1, 2012 to April 19, 2013, respectively.
[2] | The loss for the period from April 1, 2013 to April 19, 2013 had already been considered in the Company's other than temporary impairment assessment during the first and second quarters of 2013. As such, no equity in earnings was recorded during the quarter ended September 30, 2013. The total equity in earnings recognized for LNR was $55.6 million for the nine months ended September 30, 2013.
[3] | LNR consolidates certain commercial mortgage-backed securities and collateralized debt obligation trusts that are considered VIEs (and for which it is the primary beneficiary), that have been included in the amounts presented above. As of September 30, 2012, the assets of these trusts, which aggregated $97.5 billion were the sole source of repayment of the related liabilities, which aggregated $97.2 billion and are non-recourse to LNR and its equity holders, including the Company. Excluding the amounts related to VIEs, as of September 30, 2012, total assets were $1.38 billion, total debt was $398.9 million and total liabilities were $517.1 million. In addition, total revenue presented above includes $5.1 million and $27.5 million for the period from April 1, 2013 to April 19, 2013 and three months ended June 30, 2012, respectively, and $55.5 million and $72.6 million for the period from October 1, 2012 to April 19, 2013 and nine months ended June 30, 2012, respectively, of servicing fee revenue that is eliminated upon consolidation of the VIE's at the LNR level. This income is then added back through consolidation at the LNR level as an adjustment to income allocable to noncontrolling entities and has no net impact on net income attributable to LNR.
[4] | Represents the Company's investment in LNR at September 30, 2013 and December 31, 2012, respectively.

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