SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Reconciliation of Real Estate and Accumulated Depreciation) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Real Estate
Balance as of January 1,	$ 7,268,288,000	$ 6,163,287,000	$ 5,355,409,000
Change in land	228,402,000	239,558,000	199,069,000
Additions	716,614,000	1,513,888,000	1,148,826,000
Impairments	(48,738,000)	0	0
Dispositions and write-offs and land and condominium costs of sales	(845,433,000)	(648,445,000)	(540,017,000)
Balance as of December 31,	7,319,133,000	7,268,288,000	6,163,287,000
Reconciliation of Accumulated Depreciation
Balance as of January 1,	507,933,000	380,892,000	321,882,000
Depreciation Expense	198,556,000	143,698,000	113,518,000
Dispositions and write-offs	(72,425,000)	(16,657,000)	(54,508,000)
Balance as of December 31,	$ 634,064,000	$ 507,933,000	$ 380,892,000