XML 28 R19.htm IDEA: XBRL DOCUMENT v3.21.1
Stockholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2021
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:
20212020
First quarter$0.28 $0.25 
Second quarter$0.28 $0.25 
Third quarter$0.25 
Fourth quarter$0.25 
Fourth quarter (special)$0.40 
Total$0.56 $1.40 
Stock Options Granted
The following tables summarize the details of options granted under our stock option plans that were outstanding as of March 31, 2021, and the assumptions used to value these grants. All such grants were effective at the close of business on the date of grant.
 Options
Granted		Option Exercise
(Strike) Price		Closing Stock Price on Date
of Grant		March 31, 2021
Date of GrantOptions
Outstanding		Options
Exercisable
January 4, 2021741,510 $48.00 $47.650 734,323 26,643 
January 2, 2020902,263 $38.00 $37.230 865,298 24,964 
January 2, 20191,316,924 $26.00 $25.705 1,118,034 351,964 
January 2, 20181,087,936 $27.50 $27.270 837,605 395,067 
January 3, 20171,529,578 $23.50 $23.475 904,791 525,801 
April 19, 20161,690,880 $23.00 $22.870 888,322 562,764 
April 21, 20151,786,440 $21.00 $20.630 586,137 340,577 
April 22, 20141,910,000 $28.00 $25.265 323,400 170,900 
April 16, 2013410,000 $27.00 $24.625 28,964 10,226 
April 17, 20122,470,000 $27.00 $24.505 20,750 20,750 
Total13,845,531 6,307,624 2,429,656 
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 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 
April 21, 20151.3 %5.002.7 %26.84 %$3.68 
April 22, 20141.8 %5.002.0 %28.55 %$4.79 
April 16, 20130.7 %5.001.6 %37.42 %$6.33 
April 17, 20120.9 %5.001.4 %39.25 %$6.85 
Reconciliation of Denominators used in Computation of Basic and Diluted Earnings Per Share
The following tables present a reconciliation of the denominators used in the computation of basic and diluted earnings per share and a summary of the options to purchase shares of common stock which were excluded from the diluted earnings per share calculation because they were anti-dilutive:
 Three-month Period
Reconciliation20212020
Basic weighted average shares outstanding574,336,112 573,904,156 
Weighted shares assumed upon exercise of stock options2,210,857 1,414,674 
Diluted weighted average shares outstanding576,546,969 575,318,830 
Anti-Dilutive Options Excluded
 Three-month Period
Summary of Anti-dilutive Options Excluded20212020
Options to purchase shares of common stock711,977 891,290 
Weighted average exercise prices of options$48.00 38.00