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Investment in Unconsolidated Real Estate Ventures - Summary of Financial Position of Real Estate Ventures (Parenthetical) (Details) $ in Millions | Dec. 11, 2018 USD ($) | Jan. 10, 2018 property
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Evo at Cira Disposition [Member] |  |
Schedule Of Equity Method Investments [Line Items] |  |
Number of property units sold | property |  | 345
DRA Austin Venture [Member] |  |
Schedule Of Equity Method Investments [Line Items] |  |
Percentage of ownership interests | 50.00% |
Aggregate purchase price | $ | $ 535.1 |

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