CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
REVENUES
Rental income	$ 2,700,691	$ 2,577,681	$ 2,470,689
Fee and asset management	$ 384	$ 753	$ 717
Type of Revenue [Extensible List]	us-gaap:ManagementServiceMember	us-gaap:ManagementServiceMember	us-gaap:ManagementServiceMember
Total revenues	$ 2,701,075	$ 2,578,434	$ 2,471,406
EXPENSES
Property and maintenance	446,845	429,335	405,281
Real estate taxes and insurance	366,139	357,814	335,495
Property management	95,344	92,485	85,493
General and administrative	52,757	53,813	52,224
Depreciation	831,083	785,725	743,749
Total expenses	1,792,168	1,719,172	1,622,242
Net gain (loss) on sales of real estate properties	447,637	256,810	157,057
Impairment		(702)	(1,693)
Operating income	1,356,544	1,115,370	1,004,528
Interest and other income	2,817	15,317	6,136
Other expenses	(18,177)	(17,267)	(5,186)
Interest:
Expense incurred, net	(390,076)	(413,360)	(383,890)
Amortization of deferred financing costs	(11,670)	(11,310)	(8,526)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	939,438	688,750	613,062
Income and other tax (expense) benefit	2,281	(878)	(478)
Income (loss) from investments in unconsolidated entities	65,945	(3,667)	(3,370)
Net gain (loss) on sales of land parcels	2,044	987	19,167
Net income	1,009,708	685,192	628,381
Net (income) loss attributable to Noncontrolling Interests:
Operating Partnership	(36,034)	(24,939)	(22,604)
Partially Owned Properties	(3,297)	(2,718)	(2,323)
Net income attributable to controlling interests	970,377	657,535	603,454
Preferred distributions	(3,090)	(3,090)	(3,091)
Net income available to Common Shares	$ 967,287	$ 654,445	$ 600,363
Earnings per share – basic:
Net income available to Common Shares	$ 2.61	$ 1.78	$ 1.64
Weighted average Common Shares outstanding	370,461	368,052	366,968
Earnings per share – diluted:
Net income available to Common Shares	$ 2.60	$ 1.77	$ 1.63
Weighted average Common Shares outstanding	386,333	383,695	382,678