Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2020	$ (162,812)	$ 0	$ 20	$ 4,325	$ 5,766,511	$ 5,608,044	$ 62,210	$ 5,670,254
Balance (in shares) at Dec. 31, 2020			20	432,519
Net income (loss)	254,639	0	$ 0	$ 0	0	254,639	3,904	258,543
Redeemable noncontrolling interests income	0	0	0	0	0	0	(176)	(176)
Dividends declared to common and preferred shares	(160,092)	0	0	0	0	(160,092)	0	(160,092)
Distributions to noncontrolling interests	0	0	0	0	0	0	(992)	(992)
Surrender of common stock	0	0	$ 0	$ (5)	(9,241)	(9,246)	0	(9,246)
Surrender of common stock (in shares)			0	(548)
Exercise of common stock options	0	0	$ 0	$ 1	1,969	1,970	0	1,970
Exercise of common stock options (in shares)			0	104
Amortization of equity awards	0	0	$ 0	$ 0	11,954	11,954	0	11,954
Issuance of common stock	0	0	$ 0	$ 14	(14)	0	0	0
Issuance of common stock (in shares)			0	1,442
Balance at Jun. 30, 2021	(68,265)	0	$ 20	$ 4,335	5,771,179	5,707,269	64,946	5,772,215
Balance (in shares) at Jun. 30, 2021			20	433,517
Balance at Mar. 31, 2021	(104,909)	0	$ 20	$ 4,334	5,763,868	5,663,313	65,154	5,728,467
Balance (in shares) at Mar. 31, 2021			20	433,448
Net income (loss)	116,697	0	$ 0	$ 0	0	116,697	421	117,118
Redeemable noncontrolling interests income	0	0	0	0	0	0	(7)	(7)
Dividends declared to common and preferred shares	(80,053)	0	0	0	0	(80,053)	0	(80,053)
Distributions to noncontrolling interests	0	0	0	0	0	0	(622)	(622)
Surrender of common stock	0	0	$ 0	$ 0	(154)	(154)	0	(154)
Surrender of common stock (in shares)			0	(27)
Exercise of common stock options	0	0	$ 0	$ 1	1,809	1,810	0	1,810
Exercise of common stock options (in shares)			0	96
Amortization of equity awards	0	0	$ 0	$ 0	5,656	5,656	0	5,656
Balance at Jun. 30, 2021	(68,265)	0	$ 20	$ 4,335	5,771,179	5,707,269	64,946	5,772,215
Balance (in shares) at Jun. 30, 2021			20	433,517
Balance at Dec. 31, 2021	299,115	2,216	$ 20	$ 6,167	9,591,871	9,899,389	210,793	10,110,182
Balance (in shares) at Dec. 31, 2021			20	616,659
Net income (loss)	117,801	0	$ 0	$ 0	0	117,801	(12,569)	105,232
Redeemable noncontrolling interests income	0	0	0	0	0	0	(534)	(534)
Dividends declared to common and preferred shares	(253,770)	0	0	0	0	(253,770)	0	(253,770)
Distributions to noncontrolling interests	0	0	0	0	0	0	(6,058)	(6,058)
Surrender of common stock	0	0	$ 0	$ (6)	(13,539)	(13,545)	0	(13,545)
Surrender of common stock (in shares)			0	(585)
Exercise of common stock options	0	0	$ 0	$ 1	3,556	3,557	0	3,557
Exercise of common stock options (in shares)			0	174
Amortization of equity awards	0	0	$ 0	$ 0	13,909	13,909	0	13,909
Change in unrealized gains related to defined benefit plan	0	4,260	0	0	0	4,260	0	4,260
Repurchase of preferred stock	64
Repurchase of preferred stock			$ (1)	$ 0	(3,505)	(3,442)	0	(3,442)
Repurchase of preferred stock (in shares)			(1)	0
Issuance of common stock	0	0	$ 0	$ 22	11,259	11,281	0	11,281
Issuance of common stock (in shares)			0	2,162
Redemption/conversion of noncontrolling interests	0	0	$ 0	$ 1	1,612	1,613	(1,839)	(226)
Redemption/conversion of noncontrolling interests (in shares)			0	73
Contributions from noncontrolling interests	0	0	$ 0	$ 0	0	0	891	891
Balance at Jun. 30, 2022	163,210	6,476	$ 19	$ 6,185	9,605,163	9,781,053	190,684	9,971,737
Balance (in shares) at Jun. 30, 2022			19	618,483
Balance at Mar. 31, 2022	412,659	2,216	$ 20	$ 6,180	9,589,955	10,011,030	204,132	10,215,162
Balance (in shares) at Mar. 31, 2022			20	618,002
Net income (loss)	(119,501)	0	$ 0	$ 0	0	(119,501)	(11,226)	(130,727)
Redeemable noncontrolling interests income	0	0	0	0	0	0	(201)	(201)
Dividends declared to common and preferred shares	(130,012)	0	0	0	0	(130,012)	0	(130,012)
Distributions to noncontrolling interests	0	0	0	0	0	0	(1,718)	(1,718)
Surrender of common stock	0	0	$ 0	$ 0	(101)	(101)	0	(101)
Surrender of common stock (in shares)			0	(15)
Exercise of common stock options	0	0	$ 0	$ 0	989	989	0	989
Exercise of common stock options (in shares)			0	46
Amortization of equity awards	0	0	$ 0	$ 0	6,472	6,472	0	6,472
Change in unrealized gains related to defined benefit plan	0	4,260	0	0	0	4,260	0	4,260
Repurchase of preferred stock	64
Repurchase of preferred stock		0	$ (1)	$ 0	(3,505)	(3,442)	0	(3,442)
Repurchase of preferred stock (in shares)			(1)	0
Issuance of common stock	0	0	$ 0	$ 5	11,276	11,281	0	11,281
Issuance of common stock (in shares)			0	450
Redemption/conversion of noncontrolling interests	0	0	$ 0	$ 0	77	77	(303)	(226)
Redemption/conversion of noncontrolling interests (in shares)			0	0
Balance at Jun. 30, 2022	$ 163,210	$ 6,476	$ 19	$ 6,185	$ 9,605,163	$ 9,781,053	$ 190,684	$ 9,971,737
Balance (in shares) at Jun. 30, 2022			19	618,483