Investments in Unconsolidated Joint Ventures - Combined Condensed Balance Sheets of Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets:
Property, net	$ 6,501,519	$ 6,643,513
Total assets	9,228,348	8,853,571
Liabilities and partners' capital:
Mortgage notes payable	4,377,787	4,392,599
Total liabilities and equity	9,228,348	8,853,571
Investments in unconsolidated joint ventures:
Assets—Investments in unconsolidated joint ventures	1,568,878	1,519,697
Liabilities—Distributions in excess of investments in unconsolidated joint ventures	(108,275)	(107,902)
Joint Venture
Liabilities and partners' capital:
Company's capital	1,935,289	1,904,145
Investments in unconsolidated joint ventures:
Company's capital	1,935,289	1,904,145
Basis adjustment	(474,686)	(492,350)
Investments in unconsolidated joint ventures	1,460,603	1,411,795
Assets—Investments in unconsolidated joint ventures	1,568,878	1,519,697
Liabilities—Distributions in excess of investments in unconsolidated joint ventures	(108,275)	(107,902)
Investments in unconsolidated joint ventures	1,460,603	1,411,795
Joint Venture | Total
Assets:
Property, net	9,391,727	9,424,591
Other assets	804,103	772,116
Total assets	10,195,830	10,196,707
Liabilities and partners' capital:
Mortgage notes payable	6,113,603	6,144,685
Other liabilities	496,205	565,412
Company's capital	1,935,289	1,904,145
Outside partners' capital	1,650,733	1,582,465
Total liabilities and equity	10,195,830	10,196,707
Investments in unconsolidated joint ventures:
Company's capital	$ 1,935,289	$ 1,904,145