Consolidated Statements Of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Beginning shareholders' equity (shares) at Dec. 31, 2021		249,326
Beginning shareholders' equity at Dec. 31, 2021	$ 7,489,515	$ 2,493	$ 3,290,791	$ (45)	$ 4,196,276
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share issuances (shares)		586
Share issuances	6,030	$ 6	6,024
Dividends declared	(36,512)				(36,512)
Share repurchases (shares)		(10,290)
Share repurchases	(500,000)	$ (103)			(499,897)
Cash paid for shares withheld for taxes	(13,614)				(13,614)
Share-based compensation	13,097		13,097
Net income	454,723				454,723
Other comprehensive income	25			25
Ending shareholders' equity (shares) at Mar. 31, 2022		239,622
Ending shareholders' equity at Mar. 31, 2022	7,413,264	$ 2,396	3,309,912	(20)	4,100,976
Beginning shareholders' equity (shares) at Dec. 31, 2022		225,840
Beginning shareholders' equity at Dec. 31, 2022	8,914,098	$ 2,258	3,330,138	0	5,581,702
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share issuances (shares)		443
Share issuances	4,842	$ 4	4,838
Dividends declared	(36,139)				(36,139)
Share repurchases (shares)		(2,761)
Share repurchases	(150,000)	$ (27)			(149,973)
Excise tax on share repurchases	(1,221)
Cash paid for shares withheld for taxes	(10,059)				(10,059)
Share-based compensation	10,029		10,029
Net income	532,259				532,259
Other comprehensive income	0
Ending shareholders' equity (shares) at Mar. 31, 2023		223,522
Ending shareholders' equity at Mar. 31, 2023	$ 9,263,809	$ 2,235	$ 3,345,005	$ 0	$ 5,916,569