CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Total Stockholders’ Equity	Common Stock	Additional Paid-In Capital	Cumulative Dividends In Excess Of Earnings	Accumulated Other Comprehensive Income (Loss)	Total Noncontrolling Interests	Cumulative Effect, Period of Adoption, Adjustment	[1]	Cumulative Effect, Period of Adoption, Adjustment Total Stockholders’ Equity	[1]	Cumulative Effect, Period of Adoption, Adjustment Cumulative Dividends In Excess Of Earnings	[1]	Cumulative Effect, Period of Adoption, Adjusted Balance	Cumulative Effect, Period of Adoption, Adjusted Balance Total Stockholders’ Equity	Cumulative Effect, Period of Adoption, Adjusted Balance Common Stock	Cumulative Effect, Period of Adoption, Adjusted Balance Additional Paid-In Capital	Cumulative Effect, Period of Adoption, Adjusted Balance Cumulative Dividends In Excess Of Earnings	Cumulative Effect, Period of Adoption, Adjusted Balance Accumulated Other Comprehensive Income (Loss)	Cumulative Effect, Period of Adoption, Adjusted Balance Total Noncontrolling Interests
Balance (in shares) at Dec. 31, 2019			505,222													505,222
Balance at Dec. 31, 2019	$ 6,667,474	$ 6,085,058	$ 505,222	$ 9,183,892	$ (3,601,199)	$ (2,857)	$ 582,416	$ (1,524)		$ (1,524)		$ (1,524)		$ 6,665,950	$ 6,083,534	$ 505,222	$ 9,183,892	$ (3,602,723)	$ (2,857)	$ 582,416
Increase (Decrease) in Stockholders' Equity
Accounting standards update	us-gaap:AccountingStandardsUpdate201613Member
Net income (loss)	$ 282,540	279,080			279,080		3,460
Other comprehensive income (loss)	362	362				362
Issuance of common stock, net (in shares)			33,104
Issuance of common stock	1,064,622	1,064,622	$ 33,104	1,031,518
Conversion of DownREIT units to common stock (in shares)			23
Conversion of DownREIT units to common stock	0	509	$ 23	486			(509)
Repurchase of common stock (in shares)			(268)
Repurchase of common stock	(9,737)	(9,737)	$ (268)	(9,469)
Exercise of stock options (in shares)			54
Exercise of stock options	1,806	1,806	$ 54	1,752
Amortization of stock-based compensation	4,832	4,832		4,832
Common dividends	(188,500)	(188,500)			(188,500)
Distributions to noncontrolling interest	(8,432)						(8,432)
Balance (in shares) at Mar. 31, 2020			538,135
Balance at Mar. 31, 2020	7,813,443	7,236,508	$ 538,135	10,213,011	(3,512,143)	(2,495)	576,935
Balance (in shares) at Dec. 31, 2020			538,405
Balance at Dec. 31, 2020	7,344,572	6,788,345	$ 538,405	10,229,857	(3,976,232)	(3,685)	556,227
Increase (Decrease) in Stockholders' Equity
Net income (loss)	149,423	145,788			145,788		3,635
Other comprehensive income (loss)	188	188				188
Issuance of common stock, net (in shares)			879
Issuance of common stock	1,087	1,087	$ 879	208
Repurchase of common stock (in shares)			(398)
Repurchase of common stock	(12,165)	(12,165)	$ (398)	(11,767)
Amortization of stock-based compensation	5,413	5,413		5,413
Common dividends	(164,118)	(164,118)			(164,118)
Distributions to noncontrolling interest	(7,718)						(7,718)
Balance (in shares) at Mar. 31, 2021			538,886
Balance at Mar. 31, 2021	$ 7,316,682	$ 6,764,538	$ 538,886	$ 10,223,711	$ (3,994,562)	$ (3,497)	$ 552,144

[1] On January 1, 2020, the Company adopted a series of Accounting Standards Updates (“ASUs”) related to accounting for credit losses and recognized the cumulative-effect of adoption to beginning retained earnings. Refer to Note 2 for a detailed impact of adoption.