LEASES (Summary of Total Lease Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases
Operating lease cost	$ 87,601	$ 84,065	$ 262,183	$ 250,721
Short-term operating lease cost	1,803	1,617	5,397	4,342
Variable operating lease cost	22,436	20,630	67,025	61,739
Sublease income	(1,177)	(1,235)	(3,560)	(3,597)
Total lease cost	$ 110,663	$ 105,077	$ 331,045	$ 313,205