EQUITY (Changes in Total Equity) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
EQUITY [Abstract]
Balance at beginning of year			$ 4,572,476	$ 4,454,188	$ 4,454,188
Net earnings	$ 108,579	$ 142,024	273,639	306,890
Share-based compensation, net of shares withheld for taxes			(24,485)	(32,388)
Purchase and retirement of common stock			(60,303)	(161,463)	(161,463)
Share-based compensation expense			19,953	15,645
Cash dividends on common stock ($0.75/$0.60 per share)			(99,263)	(79,865)
Other comprehensive income	1,615	327	3,117	963
Balance at end of year	$ 4,685,134	$ 4,503,970	$ 4,685,134	$ 4,503,970	$ 4,572,476
Cash dividend on common stock, per share	$ 0.25	$ 0.20	$ 0.75	$ 0.60