Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Adoption of ASU 2016-13, see Note 2 [Member]	Class A Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]	Accumulated Deficit [Member] Adoption of ASU 2016-13, see Note 2 [Member]	Stockholders' Equity [Member]	Stockholders' Equity [Member] Adoption of ASU 2016-13, see Note 2 [Member]	Non-controlling Interests [Member]	Non-controlling Interests [Member] Adoption of ASU 2016-13, see Note 2 [Member]
Balance at Dec. 31, 2019	$ 3,784,681		$ 1,350	$ 4,370,014	$ (16,233)	$ (592,548)		$ 3,762,583		$ 22,098
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2019		$ (17,650)					$ (17,565)		$ (17,565)		$ (85)
Shares of class A common stock issued, net	4		4					4
Restricted class A common stock earned	8,550			8,550				8,550
Dividends reinvested	174			162		12		174
Deferred directors' compensation	125			125				125
Other comprehensive income (loss)	34,481				34,481			34,481
Net (loss) income	(53,283)					(53,350)		(53,350)		67
Dividends declared on common stock and deferred stock units, $0.62 per share	(84,082)					(84,082)		(84,082)
Contributions from non-controlling interests	8,108									8,108
Distributions to non-controlling interests	(6,681)									(6,681)
Balance at Mar. 31, 2020	3,674,427		1,354	4,378,851	18,248	(747,533)		3,650,920		23,507
Balance at Dec. 31, 2019	3,784,681		1,350	4,370,014	(16,233)	(592,548)		3,762,583		22,098
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2019		$ (17,650)					$ (17,565)		$ (17,565)		$ (85)
Other comprehensive income (loss)	25,878
Net (loss) income	55,991
Balance at Sep. 30, 2020	3,903,952		1,462	4,693,982	9,645	(821,725)		3,883,364		20,588
Balance at Mar. 31, 2020	3,674,427		1,354	4,378,851	18,248	(747,533)		3,650,920		23,507
Shares of class A common stock issued, net	297,599		108	297,491				297,599
Restricted class A common stock earned	8,527			8,527				8,527
Dividends reinvested	178			165		13		178
Deferred directors' compensation	125			125				125
Other comprehensive income (loss)	(9,323)				(9,323)			(9,323)
Net (loss) income	18,505					17,544		17,544		961
Dividends declared on common stock and deferred stock units, $0.62 per share	(90,807)					(90,807)		(90,807)
Distributions to non-controlling interests	(3,447)									(3,447)
Balance at Jun. 30, 2020	3,895,784		1,462	4,685,159	8,925	(820,783)		3,874,763		21,021
Restricted class A common stock earned	8,524			8,524				8,524
Dividends reinvested	188			174		14		188
Deferred directors' compensation	125			125				125
Other comprehensive income (loss)	720				720			720
Net (loss) income	90,769					89,860		89,860		909
Dividends declared on common stock and deferred stock units, $0.62 per share	(90,816)					(90,816)		(90,816)
Contributions from non-controlling interests	323									323
Distributions to non-controlling interests	(1,665)									(1,665)
Balance at Sep. 30, 2020	3,903,952		1,462	4,693,982	9,645	(821,725)		3,883,364		20,588
Balance at Dec. 31, 2020	3,904,231		1,468	4,702,713	11,170	(829,284)		3,886,067		18,164
Shares of class A common stock issued, net	2		2					2
Restricted class A common stock earned	7,958			7,958				7,958
Dividends reinvested	204			204				204
Deferred directors' compensation	125			125				125
Other comprehensive income (loss)	114				114			114
Net (loss) income	80,540					79,902		79,902		638
Dividends declared on common stock and deferred stock units, $0.62 per share	(91,349)					(91,349)		(91,349)
Contributions from non-controlling interests	13,448									13,448
Distributions to non-controlling interests	(11,180)									(11,180)
Balance at Mar. 31, 2021	3,904,093		1,470	4,711,000	11,284	(840,731)		3,883,023		21,070
Balance at Dec. 31, 2020	3,904,231		1,468	4,702,713	11,170	(829,284)		3,886,067		18,164
Other comprehensive income (loss)	(1,297)
Net (loss) income	297,412
Balance at Sep. 30, 2021	4,270,552		1,570	5,039,384	9,874	(814,278)		4,236,550		34,002
Balance at Mar. 31, 2021	3,904,093		1,470	4,711,000	11,284	(840,731)		3,883,023		21,070
Restricted class A common stock earned	7,895			7,895				7,895
Dividends reinvested	211			211				211
Deferred directors' compensation	125			125				125
Other comprehensive income (loss)	(541)				(541)			(541)
Net (loss) income	132,468					131,595		131,595		873
Dividends declared on common stock and deferred stock units, $0.62 per share	(91,347)					(91,347)		(91,347)
Contributions from non-controlling interests	14,745									14,745
Distributions to non-controlling interests	(10,694)									(10,694)
Balance at Jun. 30, 2021	3,956,955		1,470	4,719,231	10,743	(800,483)		3,930,961		25,994
Shares of class A common stock issued, net	311,955		100	311,855				311,955
Restricted class A common stock earned	7,907			7,907				7,907
Dividends reinvested	218			218				218
Deferred directors' compensation	173			173				173
Other comprehensive income (loss)	(869)				(869)			(869)
Net (loss) income	84,404					83,757		83,757		647
Dividends declared on common stock and deferred stock units, $0.62 per share	(97,552)					(97,552)		(97,552)
Contributions from non-controlling interests	19,068									19,068
Distributions to non-controlling interests	(11,707)									(11,707)
Balance at Sep. 30, 2021	$ 4,270,552		$ 1,570	$ 5,039,384	$ 9,874	$ (814,278)		$ 4,236,550		$ 34,002