CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands		Total	Common Stock	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2021			113,014,528
Beginning balance at Dec. 31, 2021		$ 6,021,460	$ 2,702,743	$ (6,401)	$ 3,264,719	$ (54,861)	$ 115,260
Beginning balance (in shares) at Dec. 31, 2021				(87,608)
Increase (Decrease) in Shareholders' Equity
Net income		520,512			507,594		12,918
Other comprehensive income		1,561				1,561
Dividends on common stock		(192,213)			(192,213)
Issuance of common stock (in shares)			94,200
Issuance of common stock		17,621	$ 17,621
Purchase of treasury stock (in shares)	[1]			(28,620)
Purchase of treasury stock	[1]	(1,994)		$ (1,994)
Reissuance of treasury stock for stock-based compensation and other (in shares)				80,024
Reissuance of treasury stock for stock-based compensation and other		5,792		$ 5,792
Capital activities by noncontrolling activities		(10,628)					(10,628)
Other		2			2
Ending balance (in shares) at Sep. 30, 2022			113,108,728
Ending balance at Sep. 30, 2022		6,362,113	$ 2,720,364	$ (2,603)	3,580,102	(53,300)	117,550
Ending balance (in shares) at Sep. 30, 2022				(36,204)
Beginning balance (in shares) at Jun. 30, 2022			113,078,049
Beginning balance at Jun. 30, 2022		6,021,523	$ 2,712,297	$ (2,976)	3,253,772	(54,814)	113,244
Beginning balance (in shares) at Jun. 30, 2022				(41,531)
Increase (Decrease) in Shareholders' Equity
Net income		330,632			326,326		4,306
Other comprehensive income		1,514				1,514
Issuance of common stock (in shares)			30,679
Issuance of common stock		8,067	$ 8,067
Purchase of treasury stock (in shares)	[2]			(3,735)
Purchase of treasury stock	[2]	(279)		$ (279)
Reissuance of treasury stock for stock-based compensation and other (in shares)				9,062
Reissuance of treasury stock for stock-based compensation and other		652		$ 652
Other		4			4
Ending balance (in shares) at Sep. 30, 2022			113,108,728
Ending balance at Sep. 30, 2022		$ 6,362,113	$ 2,720,364	$ (2,603)	3,580,102	(53,300)	117,550
Ending balance (in shares) at Sep. 30, 2022				(36,204)
Beginning balance (in shares) at Dec. 31, 2022		113,247,189	113,247,189
Beginning balance at Dec. 31, 2022		$ 6,159,876	$ 2,724,740	$ (5,005)	3,360,347	(31,435)	111,229
Beginning balance (in shares) at Dec. 31, 2022		(73,613)		(73,613)
Increase (Decrease) in Shareholders' Equity
Net income		$ 514,498			501,580		12,918
Other comprehensive income		1,001				1,001
Dividends on common stock		(195,981)			(195,981)
Issuance of common stock (in shares)			166,978
Issuance of common stock		19,761	$ 19,761
Purchase of treasury stock (in shares)	[1]			(34,675)
Purchase of treasury stock	[1]	(2,610)		$ (2,610)
Reissuance of treasury stock for stock-based compensation and other (in shares)				32,521
Reissuance of treasury stock for stock-based compensation and other		2,287		$ 2,287
Capital activities by noncontrolling activities		(10,628)					(10,628)
Other		$ 1		0
Ending balance (in shares) at Sep. 30, 2023		113,414,167	113,414,167
Ending balance at Sep. 30, 2023		$ 6,488,205	$ 2,744,501	$ (5,328)	3,665,946	(30,434)	113,520
Ending balance (in shares) at Sep. 30, 2023		(75,767)		(75,767)
Beginning balance (in shares) at Jun. 30, 2023			113,386,894
Beginning balance at Jun. 30, 2023		$ 6,076,137	$ 2,736,112	$ (5,328)	3,267,731	(31,591)	109,213
Beginning balance (in shares) at Jun. 30, 2023				(75,767)
Increase (Decrease) in Shareholders' Equity
Net income		402,520			398,214		4,306
Other comprehensive income		1,157				1,157
Issuance of common stock (in shares)			27,273
Issuance of common stock		8,389	$ 8,389
Other		$ 2			1		1
Ending balance (in shares) at Sep. 30, 2023		113,414,167	113,414,167
Ending balance at Sep. 30, 2023		$ 6,488,205	$ 2,744,501	$ (5,328)	$ 3,665,946	$ (30,434)	$ 113,520
Ending balance (in shares) at Sep. 30, 2023		(75,767)		(75,767)

[1] Primarily represents shares of common stock withheld from certain stock awards for tax purposes.

[2] Primarily represents shares of common stock withheld from certain stock awards for tax purposes.