XML 64 R47.htm IDEA: XBRL DOCUMENT v3.20.4
Summary of Significant Accounting Policies and Procedures and Newly Adopted Accounting Standards - Reserves of Rental Revenue (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]      
Rental revenue reserves $ 44.1 $ 1.4 $ 1.1
Straight-line rent reserves 8.4 1.5 0.2
Total rental revenue reserves $ 52.5 $ 2.9 $ 1.3