Summary of Significant Accounting Policies - Earning Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Net Income (Loss)	$ 1,316,524	$ 1,182,701	$ 898,790
Weighted average common shares outstanding (in shares)	140,367	141,468	143,435
Dilutive effect of stock options and nonvested restricted stock awards (in shares)	667	854	786
Weighted Average Number of Shares Outstanding, Diluted	141,034	142,322	144,221
Basic net income per common share (in dollars per share)	$ 9.38	$ 8.36	$ 6.27
Diluted net income per common share (in dollars per share)	$ 9.33	$ 8.31	$ 6.23