Segment Reporting - Segment Assets (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Assets
Total assets	[1]	$ 14,192,007	$ 14,183,039
Real Estate
Assets
Total assets		13,932,956	13,941,963
Investment Management
Assets
Total assets		$ 259,051	$ 241,076

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