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Noncontrolling Interest (Details) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 USD ($) building property | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Noncontrolling Interest [Line Items] |  |  |  |
Number of properties included in joint venture agreement | property | 1 |  |  |
Number of buildings included in joint venture agreement | building | 2 |  |  |
Payments to acquire interest in joint venture | $ 261,009 |  |  |
Ownership interest by noncontrolling owners | 45.00% |  |  |
Ownership interest by parent | 55.00% |  |  |
Proceeds from noncontrolling interest, net | $ 255,931 | $ 255,931 | $ 0 | $ 0
Noncontrolling interest in variable interest entity | $ 181,859 |  |  |
Difference between net proceeds received and fair value of noncontrolling interest equity |  | 74,072 |  |
Comprehensive income attributable to noncontrolling interest |  | 4,193 | 0 | 0
Distributions to noncontrolling interest |  | 13,814 | 0 | $ 0
Real Estate Investment Property, Net |  | 6,370,286 | $ 6,346,831 |
Carry amount of real estate assets in consolidated VIE |  | 764,622 |  |
Carrying amount of mortgage debt in consolidated VIE |  | $ 620,000 |  |

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