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Investments in Unconsolidated Joint Ventures - Schedules of Combined Financial Statements for the Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Assets |  |  |  |  |
Commercial real estate property, net | $ 6,524,929 |  | $ 6,524,929 |  | $ 7,906,006
Cash and cash equivalents | 160,248 | $ 241,489 | 160,248 | $ 241,489 | 127,888
Tenant and other receivables, related party receivables, and deferred rents receivable, net of allowance | 44,614 |  | 44,614 |  | 57,644
Other assets | 301,130 |  | 301,130 |  | 310,688
Liabilities and equity |  |  |  |  |
Mortgages and other loans payable, net | 2,316,688 |  | 2,316,688 |  | 2,837,282
Deferred revenue/gain | 110,283 |  | 110,283 |  | 208,119
Other liabilities | 97,565 |  | 97,565 |  | 188,005
Company's investments in unconsolidated joint ventures | 3,070,825 |  | 3,070,825 |  | 2,362,989
Combined statements of income for the unconsolidated joint ventures |  |  |  |  |
Operating expenses | 56,852 | 75,927 | 172,871 | 221,285 |
Ground rent | 9,507 | 8,307 | 26,661 | 24,923 |
Real estate taxes | 48,805 | 64,160 | 139,788 | 186,173 |
Interest expense, net of interest income | 55,168 | 65,634 | 156,695 | 196,112 |
Amortization of deferred financing costs | 2,630 | 4,008 | 9,713 | 12,201 |
Transaction related costs | 163 | 186 | 673 | 365 |
Depreciation and amortization | 70,747 | 91,728 | 208,049 | 318,916 |
Total expenses | 265,553 | 333,913 | 782,138 | 1,032,337 |
Loss on early extinguishment of debt | (2,194) | 0 | (2,194) | 0 |
Company's equity in net income from unconsolidated joint ventures (1) | 971 | 4,078 | 9,709 | 14,104 |
Joint venture |  |  |  |  |
Investment in Unconsolidated Joint Ventures |  |  |  |  |
Management fees, base revenue | 2,400 | 1,500 | 9,300 | 19,400 |
Assets |  |  |  |  |
Commercial real estate property, net | 14,091,365 |  | 14,091,365 |  | 12,822,133
Cash and cash equivalents | 350,802 |  | 350,802 |  | 494,909
Tenant and other receivables, related party receivables, and deferred rents receivable, net of allowance | 287,509 |  | 287,509 |  | 349,944
Debt and preferred equity investments, net | 189,427 |  | 189,427 |  | 202,539
Other assets | 2,235,237 |  | 2,235,237 |  | 1,407,806
Total assets | 17,154,340 |  | 17,154,340 |  | 15,277,331
Liabilities and equity |  |  |  |  |
Mortgages and other loans payable, net | 9,164,061 |  | 9,164,061 |  | 9,412,101
Deferred revenue/gain | 1,851,079 |  | 1,851,079 |  | 985,648
Other liabilities | 474,169 |  | 474,169 |  | 411,053
Equity | 5,665,031 |  | 5,665,031 |  | 4,468,529
Total liabilities and equity | 17,154,340 |  | 17,154,340 |  | 15,277,331
Company's investments in unconsolidated joint ventures | 3,070,825 |  | 3,070,825 |  | $ 2,362,989
Combined statements of income for the unconsolidated joint ventures |  |  |  |  |
Total revenues | 304,869 | 216,100 | 940,005 | 643,210 |
Operating expenses | 56,304 | 38,055 | 166,433 | 115,996 |
Ground rent | 4,397 | 4,182 | 13,247 | 12,612 |
Real estate taxes | 56,747 | 37,282 | 169,612 | 107,391 |
Interest expense, net of interest income | 88,328 | 61,066 | 269,717 | 176,096 |
Amortization of deferred financing costs | 4,446 | 4,030 | 16,912 | 17,994 |
Transaction related costs | 0 | 0 | 0 | 146 |
Depreciation and amortization | 101,538 | 61,447 | 318,113 | 198,556 |
Total expenses | 311,760 | 206,062 | 954,034 | 628,791 |
Loss on early extinguishment of debt | 0 | (7,638) | 0 | (7,638) |
Net (loss) income before gain on sale (1) | (6,891) | 2,400 | (14,029) | 6,781 |
Company's equity in net income from unconsolidated joint ventures (1) | $ 971 | $ 4,078 | $ 9,709 | $ 14,104 |

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