EARNINGS PER SHARE (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator (basic and diluted):
Net income	$ 528,572	$ 585,438	$ 576,760	$ 481,880	$ 518,973	$ 558,652	$ 585,451	$ 501,609	$ 2,172,650	$ 2,164,685	$ 1,752,302
Denominator:
Denominator for basic earnings per share - weighted-average shares									64,372	68,967	73,817
Effect of stock options									590	644	645
Denominator for diluted earnings per share - weighted-average shares and assumed conversion									64,962	69,611	74,462
Earnings per share - basic	$ 8.45	$ 9.25	$ 8.86	$ 7.24	$ 7.71	$ 8.14	$ 8.41	$ 7.13	$ 33.75	$ 31.39	$ 23.74
Earnings per share - assuming dilution	$ 8.37	$ 9.17	$ 8.78	$ 7.17	$ 7.64	$ 8.07	$ 8.33	$ 7.06	$ 33.44	$ 31.10	$ 23.53
Antidilutive stock options									144	111	291
Weighted-average exercise price per share of antidilutive stock options									$ 663.36	$ 479.90	$ 393.42