Consolidated Statements of Changes in Equity - USD ($) $ 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, 2018		$ (787,707)	$ 0	$ 43	$ 4,214	$ 6,117,254	$ 5,333,804	$ 77,249	$ 5,411,053
Balance (in shares) at Dec. 31, 2018				43,000	421,389,000
Net income		410,605	0	$ 0	$ 0	0	410,605	2,956	413,561
Redeemable noncontrolling interests income		0	0	0	0	0	0	(358)	(358)
Dividends declared to common and preferred shares		(527,577)	0	0	0	0	(527,577)	0	(527,577)
Distributions to noncontrolling interests		0	0	0	0	0	0	(10,638)	(10,638)
Issuance of common stock		0	0	$ 0	$ 105	200,028	200,133	0	200,133
Issuance of common stock (in shares)				0	10,399,000
Surrender of restricted common stock		0	0	$ 0	$ (3)	(4,027)	(4,030)	0	(4,030)
Surrender of restricted common stock (in shares)				0	(242,000)
Exercise of common stock options		0	0	$ 0	$ 2	3,878	3,880	0	$ 3,880
Exercise of common stock options (in shares)				0	269,000				268,856
Amortization of equity awards		0	0	$ 0	$ 0	19,083	19,083	0	$ 19,083
Acquisition of noncontrolling interests		0	0	0	0	3,994	3,994	(5,194)	(1,200)
Redemption of preferred stock		0	0	$ (23)	$ 0	(574,977)	(575,000)	0	(575,000)
Redemption of preferred stock (in shares)				(23,000)	0
Redeemable noncontrolling interests income		(0)	(0)	$ (0)	$ (0)	(0)	(0)	358	358
Balance at Dec. 31, 2019		(904,679)	0	$ 20	$ 4,318	5,765,233	4,864,892	64,015	4,928,907
Balance (in shares) at Dec. 31, 2019				20,000	431,815,000
Net income		1,000,833	0	$ 0	$ 0	0	1,000,833	2,044	1,002,877
Redeemable noncontrolling interests income		0	0	0	0	0	0	(1,022)	(1,022)
Dividends declared to common and preferred shares		(258,966)	0	0	0	0	(258,966)	0	(258,966)
Distributions to noncontrolling interests		0	0	0	0	0	0	(1,705)	(1,705)
Issuance of common stock		0	0	$ 0	$ 9	(9)	0	0	0
Issuance of common stock (in shares)				0	944,000
Surrender of restricted common stock		0	0	$ 0	$ (3)	(5,392)	(5,395)	0	(5,395)
Surrender of restricted common stock (in shares)				0	(303,000)
Exercise of common stock options		0	0	$ 0	$ 1	980	981	0	$ 981
Exercise of common stock options (in shares)				0	63,000				63,365
Amortization of equity awards		0	0	$ 0	$ 0	22,887	22,887	0	$ 22,887
Acquisition of noncontrolling interests		0	0	0	0	(19,348)	(19,348)	(1,271)	(20,619)
Contributions from noncontrolling interests		0	0	0	0	0	0	149	149
Adjustment of redeemable noncontrolling interests to estimated fair value		0	0	0	0	2,160	2,160	0	2,160
Redeemable noncontrolling interests income		(0)	(0)	(0)	(0)	(0)	(0)	1,022	1,022
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				20,000	432,519,000
Net income		844,059	0	$ 0	$ 0	0	844,059	5,637	849,696
Redeemable noncontrolling interests income		0	0	0	0	0	0	751	751
Dividends declared to common and preferred shares		(382,132)	0	0	0	0	(382,132)	0	(382,132)
Distributions to noncontrolling interests		0	0	0	0	0	0	(28,707)	(28,707)
Issuance of common stock		0	0	$ 0	$ 50	76,879	76,929	0	76,929
Issuance of common stock (in shares)				0	4,958,000
Exercise of common stock options		0	0	$ 0	$ 3	6,057	6,060	0	$ 6,060
Exercise of common stock options (in shares)				0	316,000				315,750
Amortization of equity awards		0	0	$ 0	$ 0	22,543	22,543	0	$ 22,543
Adjustment of redeemable noncontrolling interests to estimated fair value		0	0	0	0	2,304	2,304	0	2,304
Change in unrealized gains related to defined benefit plan		0	2,216	0	0	0	2,216	0	2,216
Redeemable noncontrolling interests income		0	0	0	0	0	0	(751)	(751)
Issuance of common stock for merger	[1]	0	0	$ 0	$ 1,799	3,736,936	3,738,735	0	3,738,735
Issuance of common stock for merger (in shares)	[1]			0	179,920,000
Surrender of common stock for taxes		0	0	$ 0	$ (11)	(20,898)	(20,909)	0	(20,909)
Surrender of common stock for taxes (in shares)				0	(1,127,000)
Noncontrolling interests assumed from the merger (1)	[1]	0	0	$ 0	$ 0	0	0	177,039	177,039
Redemption/conversion of noncontrolling interests		0	0	$ 0	$ 1	1,539	1,540	(4,635)	(3,095)
Redemption/conversion of noncontrolling interests (in shares)				0	73,000
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				20,000	616,659,000

[1] See Footnotes 1 and 2 of the Notes to Consolidated Financial Statements for further details.