Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income—basic	$ 603,119	$ 742,934	$ 600,671
Net income—diluted	$ 603,119	$ 742,934	$ 600,671
Average common shares outstanding—basic (in shares)	158,140	167,930	188,370
Dilutive effect of stock-based compensation arrangements (in shares)	1,993	2,734	1,893
Adjusted average common shares outstanding—diluted (in shares)	160,133	170,664	190,263
Net income per share
Basic (in usd per share)	$ 3.81	$ 4.42	$ 3.19
Diluted (in usd per share)	$ 3.77	$ 4.35	$ 3.16
Stock Compensation Plan
Net income per share
Shares of common stock equivalents (in shares)	14	0	28