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Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2020
Earnings Per Share  
Computation of basic and diluted earnings per share

For the Three Months Ended

For the Nine Months Ended

September 30, 

September 30, 

    

2020

    

2019

    

2020

    

2019

Numerator (basic and diluted):

 

  

 

  

 

  

 

  

Net income

$

527,252

$

391,293

$

1,359,357

$

1,066,126

Denominator:

 

  

 

  

 

  

 

  

Weighted-average common shares outstanding – basic

 

73,916

 

76,172

 

74,377

 

77,415

Effect of stock options (1)

 

670

 

797

 

649

 

805

Weighted-average common shares outstanding – assuming dilution

 

74,586

 

76,969

 

75,026

 

78,220

Earnings per share:

 

  

 

  

 

  

 

  

Earnings per share-basic

$

7.13

$

5.14

$

18.28

$

13.77

Earnings per share-assuming dilution

$

7.07

$

5.08

$

18.12

$

13.63

Antidilutive potential common shares not included in the calculation of diluted earnings per share:

 

  

 

  

 

  

 

  

Stock options (1)

 

153

 

207

 

327

 

214

Weighted-average exercise price per share of antidilutive stock options (1)

$

409.07

$

360.80

$

384.43

$

360.36

(1)See Note 11 for further information concerning the terms of the Company’s share-based compensation plans.