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, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator (basic and diluted):
Net Income (Loss)	$ 552,504	$ 649,827	$ 627,365	$ 516,885	$ 528,572	$ 585,438	$ 576,760	$ 481,880	$ 2,346,581	$ 2,172,650	$ 2,164,685
Denominator:
Denominator for basic earnings per share - weighted-average shares									60,475	64,372	68,967
Effect of stock options									523	590	644
Denominator for diluted earnings per share - weighted-average shares and assumed conversion									60,998	64,962	69,611
Earnings per share - basic	$ 9.33	$ 10.82	$ 10.32	$ 8.36	$ 8.45	$ 9.25	$ 8.86	$ 7.24	$ 38.80	$ 33.75	$ 31.39
Earnings per share - assuming dilution	$ 9.26	$ 10.72	$ 10.22	$ 8.28	$ 8.37	$ 9.17	$ 8.78	$ 7.17	$ 38.47	$ 33.44	$ 31.10
Antidilutive stock options									95	144	111
Weighted-average exercise price per share of antidilutive stock options									$ 836.12	$ 663.36	$ 479.90