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Unconsolidated Affiliates and Noncontrolling Interests - Noncontrolling Interests (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Schedule Of Equity Method Investments [Line Items]    
Noncontrolling interests $ 22,726 $ 55,553
Operating Partnership    
Schedule Of Equity Method Investments [Line Items]    
Noncontrolling interests 540 31,592
Other consolidated subsidiaries    
Schedule Of Equity Method Investments [Line Items]    
Noncontrolling interests $ 22,186 $ 23,961