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Investments in Partnerships - Summary of Assets and Liabilities of Unconsolidated Joint Venture (Parenthetical) (Details) - PM Gallery LP
$ in Millions
Dec. 10, 2020
USD ($)
Schedule Of Equity Method Investments [Line Items]  
Ownership percentage 50.00%
Net discount for non-controlling interest ownership percentage 15.00%
Loss on remeasurement $ 145.7
Other than temporary impairment on fair value of non-controlling ownership interest in joint venture $ 2.8