Segment Reporting - Segment Assets (Details) - USD ($) $ in Thousands		Mar. 31, 2020	Dec. 31, 2019
Assets
Total assets	[1]	$ 13,890,308	$ 14,060,918
Real Estate
Assets
Total assets		13,686,006	13,811,403
Investment Management
Assets
Total assets		$ 204,302	$ 249,515

[1] See Note 2 for details related to variable interest entities (“VIEs”).