Investments in and Advances to Joint Ventures - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Letters of credit outstanding amount	$ 193.5		$ 197.3
Unconsolidated Joint Ventures
Schedule Of Equity Method Investments [Line Items]
Net distributions from unconsolidated joint ventures	6.5	$ 8.1
Consolidated Joint Ventures
Schedule Of Equity Method Investments [Line Items]
Letters of credit outstanding amount	$ 48.4		$ 55.0