REVENUES (Freight & Delivery Revenues) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total revenues	[1]	$ 1,068,344	$ 1,049,242
Freight & Delivery Revenues [Member]
Disaggregation of Revenue [Line Items]
Total revenues	[2]	(163,408)	(113,961)
Total Revenues Excluding Freight & Delivery [Member]
Disaggregation of Revenue [Line Items]
Total revenues		$ 904,936	$ 935,281

[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 and Texas West market — Arizona, California and New Mexico

[2] Includes freight & delivery to remote distribution sites