CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
REVENUES
Rental income	$ 2,571,705	$ 2,700,691	$ 2,577,681
EXPENSES
Property and maintenance	440,998	446,845	429,335
Real estate taxes and insurance	381,562	366,139	357,814
Property management	93,825	95,344	92,485
General and administrative	48,305	52,757	53,813
Depreciation	820,832	831,083	785,725
Total expenses	1,785,522	1,792,168	1,719,172
Net gain (loss) on sales of real estate properties	531,807	447,637	256,810
Impairment			(702)
Operating income	1,317,990	1,356,160	1,114,617
Interest and other income	5,935	3,201	16,070
Other expenses	(17,510)	(18,177)	(17,267)
Interest:
Expense incurred, net	(365,073)	(390,076)	(413,360)
Amortization of deferred financing costs	(8,939)	(11,670)	(11,310)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	932,403	939,438	688,750
Income and other tax (expense) benefit	(852)	2,281	(878)
Income (loss) from investments in unconsolidated entities	(3,284)	65,945	(3,667)
Net gain (loss) on sales of land parcels	34,234	2,044	987
Net income	962,501	1,009,708	685,192
Net (income) loss attributable to Noncontrolling Interests:
Operating Partnership	(34,010)	(36,034)	(24,939)
Partially Owned Properties	(14,855)	(3,297)	(2,718)
Net income attributable to controlling interests	913,636	970,377	657,535
Preferred distributions	(3,090)	(3,090)	(3,090)
Net income available to Common Shares	$ 910,546	$ 967,287	$ 654,445
Earnings per share – basic:
Net income available to Common Shares	$ 2.45	$ 2.61	$ 1.78
Weighted average Common Shares outstanding	371,791	370,461	368,052
Earnings per share – diluted:
Net income available to Common Shares	$ 2.45	$ 2.60	$ 1.77
Weighted average Common Shares outstanding	385,874	386,333	383,695