Quarterly report pursuant to Section 13 or 15(d)

Investment in and Advances to Unconsolidated Joint Ventures - Narrative (Details)

v3.21.2
Investment in and Advances to Unconsolidated Joint Ventures - Narrative (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
joint_venture
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
joint_venture
Sep. 30, 2020
USD ($)
Dec. 31, 2020
joint_venture
Schedule of Equity Method Investments [Line Items]          
Impairment of real estate held for sale $ 0.0 $ 27.1 $ 0.0 $ 27.1  
LS-NJ Port Imperial JV LLC and LS-Boston Point LLC          
Schedule of Equity Method Investments [Line Items]          
Number of investments | joint_venture 2   2   2
LS-NJ Port Imperial JV LLC          
Schedule of Equity Method Investments [Line Items]          
Ownership interest (percent) 51.00% 51.00% 51.00% 51.00% 51.00%
Equity method investment, impairment charge   $ 0.0   $ 13.8