Investments in Unconsolidated Entities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Variable Interest Entity [Line Items]
Investments in joint ventures included in unconsolidated entities	$ 1,703,952,000		$ 1,386,672,000
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments in joint ventures included in unconsolidated entities	74,400,000		$ 74,400,000
Loss attributable to variable interest entities	$ 2,000,000.0	$ 2,400,000