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EARNINGS PER SHARE (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Numerator (basic and diluted):        
Net income $ 576,760 $ 585,451 $ 1,058,640 $ 1,087,060
Denominator:        
Denominator for basic earnings per share - weighted-average shares 65,116 69,618 65,840 69,997
Effect of stock options 570 646 594 643
Denominator for diluted earnings per share - weighted-average shares and assumed conversion 65,686 70,264 66,434 70,640
Earnings per share - basic $ 8.86 $ 8.41 $ 16.08 $ 15.53
Earnings per share - assuming dilution $ 8.78 $ 8.33 $ 15.94 $ 15.39
Antidilutive stock options 135 122 133 187
Weighted-average exercise price per share of antidilutive stock options $ 656.05 $ 463.76 $ 656.62 $ 449.20