XML 35 R66.htm IDEA: XBRL DOCUMENT v3.20.1
Fair Value Measurements (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Fair Value Disclosures [Abstract]    
Fair value of notes receivable $ 39.7 $ 0.2
Fair value of notes payable $ 1,262.6 $ 1,348.1