UNAUDITED SUPPLEMENTARY DATA (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
UNAUDITED SUPPLEMENTARY DATA [Abstract]
Total revenues	$ 1,186,152	$ 1,418,758	$ 1,327,682	$ 996,511	$ 1,088,047	$ 1,240,197	$ 1,200,151	$ 854,474	$ 4,929,103	[1]	$ 4,382,869	[1]	$ 3,890,296	[1]
Gross profit	293,081	400,643	370,502	191,675	275,285	343,142	323,184	159,334	1,255,901		1,100,945		993,513
Operating earnings	193,575	303,376	276,074	104,433	186,491	249,184	230,843	81,195	877,458		747,713		639,044
Earnings from continuing operations	142,595	218,066	197,907	63,935	124,280	179,864	160,302	53,395	622,503		517,841		593,391
Net earnings	$ 141,092	$ 215,713	$ 197,558	$ 63,299	$ 124,023	$ 179,151	$ 159,652	$ 52,979	$ 617,662		$ 515,805		$ 601,185
Basic earnings per share from continuing operations	$ 1.08	$ 1.65	$ 1.50	$ 0.48	$ 0.94	$ 1.36	$ 1.21	$ 0.40	$ 4.71		$ 3.91		$ 4.48
Diluted earnings per share from continuing operations	1.07	1.63	1.48	0.48	0.93	1.34	1.20	0.40	4.67		3.87		4.40
Basic net earnings per share	1.07	1.63	1.49	0.48	0.94	1.35	1.21	0.40	4.67		3.90		4.54
Diluted net earnings per share	$ 1.06	$ 1.62	$ 1.48	$ 0.48	$ 0.93	$ 1.34	$ 1.19	$ 0.39	$ 4.63		$ 3.85		$ 4.46

[1] ¹ The geographic markets are defined by states/countries as follows: East market — Arkansas, Delaware, Illinois, Kentucky, Maryland, North Carolina, Pennsylvania, Tennessee, Virginia, and Washington D.C. Gulf Coast market — Alabama, Florida, Georgia, Louisiana, Mexico, Mississippi, Oklahoma, South Carolina, Texas and the Bahamas West market — Arizona, California and New Mexico