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Real Estate and Lease Intangibles - Additional Information (Details) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Oct. 14, 2016 USD ($) $ / shares | Mar. 10, 2016 USD ($) $ / shares | Dec. 31, 2017 USD ($) Property $ / shares | Dec. 31, 2016 USD ($) Property $ / shares | Dec. 31, 2015 USD ($) $ / shares
Real Estate [Line Items] |  |  |  |  |
Net gain on sales of real estate properties |  |  | $ 157,057 | $ 4,044,055 | $ 335,134
Net gain (loss) on sales of land parcels |  |  | $ 19,167 | $ 15,731 | $ (1)
Properties disposed | Property |  |  | 5 | 99 |
Property Units disposed | Property |  |  | 1,194 | 29,776 |
Sales Price |  |  | $ 388,400 | $ 6,943,458 |
Distributions declared per common share outstanding | $ / shares |  |  | $ 2.015 | $ 13.015 | $ 2.21
Non-cash asset impairment charge |  |  | $ 1,700 |  |
Real estate held-for-sale, value |  |  | 200 |  |
Business combination, recognized identifiable assets acquired and liabilities assumed, assets |  |  | 468,050 | $ 249,334 |
Investment in real estate, net |  |  | 19,986,518 | 20,026,036 |
Noncontrolling interests partially owned properties |  |  | 4,708 | 10,609 |
Deposits - restricted |  |  | 50,115 | 141,881 | $ 112,839
Company's Portion [Member] |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |
Land purchase price |  |  | 76,100 |  |
Business combination, recognized identifiable assets acquired and liabilities assumed, assets |  |  | 102,500 |  |
Investment in real estate, net |  |  | 0 |  |
Noncontrolling interests partially owned properties |  |  | 0 |  |
Accrued liabilities |  |  | 0 |  |
Deposits - restricted |  |  | 0 |  |
Joint Venture Partner [Member] |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |
Land purchase price |  |  | 57,900 |  |
Business combination, recognized identifiable assets acquired and liabilities assumed, assets |  |  | 75,700 |  |
Investment in real estate, net |  |  | 116,700 |  |
Noncontrolling interests partially owned properties |  |  | 117,300 |  |
Accrued liabilities |  |  | 1,100 |  |
Deposits - restricted |  |  | 1,700 |  |
Partially Owned Properties – Unconsolidated |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |
Net gain on sales of real estate properties |  |  |  | $ 8,900 |
Properties disposed | Property |  |  |  | 1 |
Property Units disposed | Property |  |  |  | 336 |
Sales Price |  |  |  | $ 74,500 |
Investment in real estate, net |  |  | 316,187 |  |
Noncontrolling interests partially owned properties |  |  | 137,152 |  |
Deposits - restricted |  |  | $ 258 |  |
Starwood Portfolio [Member] |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |
Net gain on sales of real estate properties |  |  |  | $ 3,200,000 |
Properties disposed | Property |  |  |  | 72 |
Property Units disposed | Property |  |  |  | 23,262 |
Sales Price |  |  |  | $ 5,365,000 |
Distributions declared per common share outstanding | $ / shares | $ 3.00 | $ 8.00 | $ 0 | $ 11.00 | $ 0
Payments of dividends | $ 1,100,000 | $ 3,000,000 |  |  |

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