CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Class A	Class B-3	Total Company’s Stockholders’ Equity	Total Company’s Stockholders’ Equity Cumulative Effect, Period of Adoption, Adjustment	Common Stock Class A	Common Stock Class B-3	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income	Noncontrolling Interests in Investment Entities	Noncontrolling Interests in the Operating Partnership	Noncontrolling Interests in the Operating Partnership Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Dec. 31, 2018							83,410	44,399
Beginning balance at Dec. 31, 2018	$ 2,845,202				$ 2,706,905		$ 834	$ 444	$ 2,899,353	$ (193,327)		$ (399)	$ 72,683	$ 65,614
Increase (Decrease) in Stockholders' Equity
Contributions	24												24
Distributions	(394)												(394)
Conversion of Class B-3 common stock to Class A common stock (in shares)							44,399	(44,399)
Conversion of Class B-3 common stock to Class A common stock							$ 444	$ (444)
Issuance and amortization of equity-based compensation (in shares)							800
Issuance and amortization of equity-based compensation	1,843				1,843		$ 8		1,835
Other comprehensive income (loss)	13,843				13,519							13,519		324
Dividends and distributions declared	(57,066)				(55,726)					(55,726)				(1,340)
Shares canceled for tax withholding on vested stock awards (in shares)							(96)
Shares canceled for tax withholding on vested stock awards	(1,497)				(1,497)		$ (1)		(1,496)
Reallocation of equity					(23)				(23)					23
Net income (loss)	14,957				14,908					14,908			(298)	347
Ending balance (in shares) at Mar. 31, 2019							128,513	0
Ending balance at Mar. 31, 2019	2,816,912				2,679,929		$ 1,285	$ 0	2,899,669	(234,145)		13,120	72,015	64,968
Increase (Decrease) in Stockholders' Equity
Dividends declared per share of common stock (in dollars per share)			$ 0.44	$ 0.15
Beginning balance (in shares) at Dec. 31, 2018							83,410	44,399
Beginning balance at Dec. 31, 2018	2,845,202				2,706,905		$ 834	$ 444	2,899,353	(193,327)		(399)	72,683	65,614
Increase (Decrease) in Stockholders' Equity
Conversion of Class B-3 common stock to Class A common stock	444
Other comprehensive income (loss)	30,015
Net income (loss)	(497,828)
Ending balance (in shares) at Sep. 30, 2019							128,539	0
Ending balance at Sep. 30, 2019	2,209,055				2,126,762		$ 1,285	$ 0	2,905,906	(809,344)		28,915	31,410	50,883
Beginning balance (in shares) at Mar. 31, 2019							128,513	0
Beginning balance at Mar. 31, 2019	2,816,912				2,679,929		$ 1,285	$ 0	2,899,669	(234,145)		13,120	72,015	64,968
Increase (Decrease) in Stockholders' Equity
Contributions	11												11
Distributions	(1,198)												(1,198)
Issuance and amortization of equity-based compensation (in shares)							32
Issuance and amortization of equity-based compensation	2,713				2,713				2,713
Other comprehensive income (loss)	12,724				12,427							12,427		297
Dividends and distributions declared	(57,254)				(55,912)					(55,912)				(1,342)
Reallocation of equity					744				744					(744)
Net income (loss)	(110,790)				(107,341)					(107,341)			(880)	(2,569)
Ending balance (in shares) at Jun. 30, 2019							128,545	0
Ending balance at Jun. 30, 2019	$ 2,663,118				2,532,560		$ 1,285	$ 0	2,903,126	(397,398)		25,547	69,948	60,610
Increase (Decrease) in Stockholders' Equity
Dividends declared per share of common stock (in dollars per share)	$ 0.44
Contributions	$ 17												17
Distributions	(1,110)												(1,110)
Issuance and amortization of equity-based compensation	2,910				2,910				2,910
Other comprehensive income (loss)	3,448				3,368							3,368		80
Dividends and distributions declared	(57,253)				(55,915)					(55,915)				(1,338)
Shares canceled for tax withholding on vested stock awards (in shares)							(6)
Shares canceled for tax withholding on vested stock awards	(80)				(80)				(80)
Reallocation of equity					(50)				(50)					50
Net income (loss)	(401,995)				(356,031)					(356,031)			(37,445)	(8,519)
Ending balance (in shares) at Sep. 30, 2019							128,539	0
Ending balance at Sep. 30, 2019	$ 2,209,055				2,126,762		$ 1,285	$ 0	2,905,906	(809,344)		28,915	31,410	50,883
Increase (Decrease) in Stockholders' Equity
Dividends declared per share of common stock (in dollars per share)	$ 0.44
Beginning balance (in shares) at Dec. 31, 2019							128,539	0
Beginning balance at Dec. 31, 2019	$ 2,201,350	$ (23,186)			2,119,022	$ (22,644)	$ 1,285	$ 0	2,909,181	(819,738)	$ (22,644)	28,294	31,631	50,697	$ (542)
Increase (Decrease) in Stockholders' Equity
Distributions	(11,013)												(11,013)
Issuance and amortization of equity-based compensation	342				342				342
Other comprehensive income (loss)	(72,701)				(70,999)							(70,999)		(1,702)
Dividends and distributions declared	(39,463)				(38,541)					(38,541)				(922)
Shares canceled for tax withholding on vested stock awards (in shares)							(173)
Shares canceled for tax withholding on vested stock awards	(1,687)				(1,687)		$ (1)		(1,686)
Reallocation of equity					(41)				(41)					41
Net income (loss)	(80,141)				(78,772)					(78,772)			523	(1,892)
Ending balance (in shares) at Mar. 31, 2020							128,366	0
Ending balance at Mar. 31, 2020	$ 1,973,501				1,906,680		$ 1,284	$ 0	2,907,796	(959,695)		(42,705)	21,141	45,680
Increase (Decrease) in Stockholders' Equity
Dividends declared per share of common stock (in dollars per share)	$ 0.30
Beginning balance (in shares) at Dec. 31, 2019							128,539	0
Beginning balance at Dec. 31, 2019	$ 2,201,350	$ (23,186)			2,119,022	$ (22,644)	$ 1,285	$ 0	2,909,181	(819,738)	$ (22,644)	28,294	31,631	50,697	$ (542)
Increase (Decrease) in Stockholders' Equity
Conversion of Class B-3 common stock to Class A common stock	0
Other comprehensive income (loss)	13,851
Net income (loss)	(314,295)
Ending balance (in shares) at Sep. 30, 2020							128,583	0
Ending balance at Sep. 30, 2020	2,016,892				1,703,385		$ 1,286	$ 0	2,842,892	(1,181,747)		40,954	272,803	40,704
Beginning balance (in shares) at Mar. 31, 2020							128,366	0
Beginning balance at Mar. 31, 2020	1,973,501				1,906,680		$ 1,284	$ 0	2,907,796	(959,695)		(42,705)	21,141	45,680
Increase (Decrease) in Stockholders' Equity
Contributions	200,467												200,467
Distributions	(3,156)												(3,156)
Issuance and amortization of equity-based compensation (in shares)							237
Issuance and amortization of equity-based compensation	1,549				1,549		$ 2		1,547
Other comprehensive income (loss)	69,607				67,946							67,946	257	1,404
Shares canceled for tax withholding on vested stock awards (in shares)							(20)
Shares canceled for tax withholding on vested stock awards	(81)				(81)				(81)
Reallocation of equity					1,777				1,777					(1,777)
Costs of noncontrolling equity	(466)				(466)				(466)
Investment by JV partner in consolidated JV and equity reallocation related to that partner’s return (see Note 2)					(70,439)				(70,439)				70,439
Net income (loss)	(240,584)				(227,059)					(227,059)			(8,107)	(5,418)
Ending balance (in shares) at Jun. 30, 2020							128,583	0
Ending balance at Jun. 30, 2020	2,000,837				1,679,907		$ 1,286	$ 0	2,840,134	(1,186,754)		25,241	281,041	39,889
Increase (Decrease) in Stockholders' Equity
Contributions	27												27
Distributions	(8,724)												(8,724)
Issuance and amortization of equity-based compensation	1,376				1,376				1,376
Other comprehensive income (loss)	16,947				15,713							15,713	916	318
Shares canceled for tax withholding on vested stock awards	(1)				(1)				(1)
Reallocation of equity					(296)				(296)					296
Investment by JV partner in consolidated JV and equity reallocation related to that partner’s return (see Note 2)					1,679				1,679				(1,679)
Net income (loss)	6,430				5,007					5,007			1,222	201
Ending balance (in shares) at Sep. 30, 2020							128,583	0
Ending balance at Sep. 30, 2020	$ 2,016,892				$ 1,703,385		$ 1,286	$ 0	$ 2,842,892	$ (1,181,747)		$ 40,954	$ 272,803	$ 40,704