General - Earning Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accounting Policies [Abstract]
Net income	$ 303,957	$ 245,838
Weighted average common shares outstanding (in shares)	140,804	141,916
Dilutive effect of stock options and non-vested restricted stock awards (in shares)	921	926
Weighted average common shares outstanding - assuming dilution (in shares)	141,725	142,842
Basic earnings per share (usd per share)	$ 2.16	$ 1.73
Diluted earnings per share (usd per share)	$ 2.14	$ 1.72