EQUITY (Changes in Total Equity) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
EQUITY [Abstract]
Balance at beginning of year	$ 4,572,476	$ 4,454,188	$ 4,454,188
Net earnings	44,921	40,158
Share-based compensation, net of shares withheld for taxes	(21,498)	(24,613)
Purchase and retirement of common stock	(49,221)	(26,597)	(161,463)
Share-based compensation expense	6,488	4,321
Cash dividends on common stock	(33,152)	(26,718)
Other comprehensive income	747	314
Balance at end of year	$ 4,520,761	$ 4,421,053	$ 4,572,476