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Stockholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2025
Stockholders' Equity Note [Abstract]  
Schedule of Dividends Paid Previously or Declared
The following table presents the cash dividends either paid previously or declared by our board of directors for future payment on a per share basis:
20252024
First quarter$0.43 $0.39 
Second quarter0.44 0.39 
Third quarter0.39 
Fourth quarter0.39 
Total$0.87 $1.56 
Stock Options Granted
The following tables summarize the details of options granted under our stock option plans that were outstanding as of March 31, 2025, and the assumptions used to value those grants. All such grants were effective at the close of business on the grant date.
 Options
Granted		Option Exercise
Price		Closing Stock Price on Grant DateMarch 31, 2025
Date of GrantOptions
Outstanding		Options
Exercisable
January 2, 2025683,318 $72.00 $71.110 669,089 44,014 
January 2, 2024814,912 $64.00 $63.550 730,673 157,469 
January 3, 20231,071,943 $48.00 $47.400 825,398 291,103 
January 3, 2022713,438 $62.00 $61.980 492,213 258,997 
January 4, 2021741,510 $48.00 $47.650 440,606 288,610 
January 2, 2020902,263 $38.00 $37.230 450,135 367,081 
January 2, 20191,316,924 $26.00 $25.705 466,075 389,383 
January 2, 20181,087,936 $27.50 $27.270 297,182 263,626 
January 3, 20171,529,578 $23.50 $23.475 128,407 128,407 
April 19, 20161,690,880 $23.00 $22.870 24,943 24,943 
Total10,552,702 4,524,721 2,213,633 
Fair Value Assumptions for Options Granted
Date of GrantRisk-free
Interest Rate		Expected Life
of Option in
Years		Expected
Dividend
Yield		Expected
Stock
Volatility		Estimated Fair
Value of Stock
Option
January 2, 20254.3 %5.002.2 %27.36 %$17.72 
January 2, 20243.8 %5.002.2 %28.44 %$15.87 
January 3, 20234.0 %5.002.6 %29.58 %$11.62 
January 3, 20221.3 %5.001.7 %28.52 %$13.68 
January 4, 20210.4 %5.002.0 %29.17 %$9.57 
January 2, 20201.7 %5.002.4 %25.70 %$6.81 
January 2, 20192.5 %5.002.9 %23.96 %$4.40 
January 2, 20182.2 %5.002.3 %23.45 %$5.02 
January 3, 20171.9 %5.002.6 %24.49 %$4.20 
April 19, 20161.3 %5.002.6 %26.34 %$4.09 
Reconciliation of Denominators Used in Computation of Basic and Diluted Net Income Per Share
The following tables present a reconciliation of the denominators used in the computation of basic and diluted net income per share and a summary of the options to purchase shares of common stock which were excluded from the diluted net income per share calculation because they were anti-dilutive:
 Three-month Period
Reconciliation20252024
Basic weighted average shares outstanding573,467,861 572,339,493 
Weighted shares assumed upon exercise of stock options1,288,251 1,751,214 
Diluted weighted average shares outstanding574,756,112 574,090,707 
Anti-Dilutive Options Excluded
 Three-month Period
Summary of Anti-dilutive Options Excluded20252024
Options to purchase shares of common stock1,308,834 958,569 
Weighted average exercise prices of options$67.78 63.55