Computation of Earnings Per Share - Calculations Of Basic And Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net income used for calculating basic and diluted income per share	$ 882,466	$ 807,799	$ 793,560
Denominator:
Weighted average common shares used in the calculation of basic income per share (in shares)	79,004	80,178	85,026
Dilutive effect of outstanding awards associated with stock-based compensation plans (in shares)	676	889	1,151
Shares used in the calculation of diluted income per share (in shares)	79,680	81,067	86,177
Earnings per share
Basic (in dollars per share)	$ 11.17	$ 10.08	$ 9.33
Diluted (in dollars per share)	$ 11.08	$ 9.96	9.21
Sale of intellectual property, income tax benefit (in dollars per share)			$ 0.63