Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Shareholders' Equity, shares at Dec. 31, 2020		266,464,000
Shareholders' Equity at Dec. 31, 2020	$ 6,569,989	$ 2,665	$ 3,261,412	$ (145)	$ 3,306,057
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises, shares		1,000
Stock option exercises	11		11
Share issuances, net of cancellations, shares		525,000
Share issuances	4,181	$ 5	4,176
Dividends declared	(148,133)				(148,133)
Share repurchases, shares		(17,664,000)
Share repurchases	(897,303)	$ (177)			(897,126)
Cash paid for shares withheld for taxes	(10,842)				(10,842)
Share-based compensation	25,192		25,192
Net income	1,946,320				1,946,320
Other comprehensive income	100			100
Shareholders' Equity, shares at Dec. 31, 2021		249,326,000
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, net of cancellations, shares		676,000
Share issuances	6,031	$ 7	6,024
Dividends declared	(143,134)				(143,134)
Share repurchases, shares		(24,162,000)
Share repurchases	(1,074,673)	$ (242)			(1,074,431)
Cash paid for shares withheld for taxes	(14,326)				(14,326)
Share-based compensation	33,323		33,323
Net income	2,617,317				2,617,317
Other comprehensive income	$ 45			45
Shareholders' Equity, shares at Dec. 31, 2022	225,840,443	225,840,000
Shareholders' Equity at Dec. 31, 2022	$ 8,914,098	$ 2,258	3,330,138		5,581,702
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share issuances, net of cancellations, shares		511,000
Share issuances	4,841	$ 6	4,835
Dividends declared	(149,806)				(149,806)
Share repurchases, shares		(13,793,000)
Share repurchases	(1,000,000)	$ (138)			(999,862)
Excise Tax On Share Repurchase	(9,691)				(9,691)
Cash paid for shares withheld for taxes	(11,991)				(11,991)
Share-based compensation	33,434		33,434
Net income	2,602,372				2,602,372
Other comprehensive income	$ 0
Shareholders' Equity, shares at Dec. 31, 2023	212,557,522	212,558,000
Shareholders' Equity at Dec. 31, 2023	$ 10,383,257	$ 2,126	$ 3,368,407	$ 0	$ 7,012,724